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Temporal and spatial evolution of global major grain trade patterns
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作者 Ziqi Yin Jiaxuan Hu +3 位作者 Jing Zhang Xiangyang Zhou Lingling Li Jianzhai Wu 《Journal of Integrative Agriculture》 SCIE CAS CSCD 2024年第3期1075-1086,共12页
The complex and volatile international landscape has significantly impacted global grain supply security. This study uses a complex network analysis model to examine the evolution and trends of the global major grain ... The complex and volatile international landscape has significantly impacted global grain supply security. This study uses a complex network analysis model to examine the evolution and trends of the global major grain trade from 1990 to 2020, focusing on network topology, centrality ranking, and community structure. There are three major findings. First, the global major grain trade network has expanded in scale, with a growing emphasis on diversification and balance. During the study period, the United States, Canada, China, and Brazil were the core nodes of the network. Grain-exporting countries were mainly situated in Asia, the Americas, and Europe, and importing countries in Asia, Africa, and Europe. Second, a significant increase in the number of high centrality countries with high export capacity occurred, benefiting from natural advantages such as fertile land and favorable climates. Third, the main global grain trade network is divided into four communities, with the Americas-Europe community being the largest and most widespread. The formation of the community pattern was influenced by geographic proximity, driven by the core exporting countries. Therefore, the world needs to enhance the existing trade model, promote the multi-polarization of the grain trade network, and establish a global vision for the future community. Countries and regions should participate actively in global grain trade security governance and institutional reform, expand trade links with other countries, and optimize import and export policies to reduce trade risks. 展开更多
关键词 grain trade pattern evolution complex network
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Impact of BRICS Trade Facilitation on China's Exports Using Cross-Border E-Commerce
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作者 Longling LI Kaimei CHEN Zijian LONG 《Asian Agricultural Research》 2024年第5期1-7,共7页
With the rapid growth of the global digital economy, cross-border e-commerce, as an emerging form of trade, has gradually become a powerful engine to promote the development of global trade. BRICS is an important forc... With the rapid growth of the global digital economy, cross-border e-commerce, as an emerging form of trade, has gradually become a powerful engine to promote the development of global trade. BRICS is an important force in the global economy, and the progress of the BRICS countries' trade facilitation level has an important impact on the global trade environment. This paper conducts an in-depth study of the dynamic changes in BRICS trade facilitation from 2013 to 2022, and uses an extended gravity model to analyze the specific impact of this change on China's exports using cross-border e-commerce. The results show that although the BRICS countries have made some progress in trade facilitation, the overall level still needs to be improved, and there are obvious differences among member countries. However, the improvement of trade facilitation among BRICS countries has undoubtedly brought significant positive effects to China's exports using cross-border e-commerce. 展开更多
关键词 trade facilitation BRICS Cross-border e-commerce Export trade
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Sharing Smart Services,Jointly Promoting Trade Development
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作者 Zhang Li 《China's Foreign Trade》 2024年第5期49-51,共3页
In 2024,the China International Fair for Trade in Services (hereinafter referred to as CIFTIS) opened in the China National Convention Center and Shougang Park on September 12th.The theme of the CIFTIS this time was&q... In 2024,the China International Fair for Trade in Services (hereinafter referred to as CIFTIS) opened in the China National Convention Center and Shougang Park on September 12th.The theme of the CIFTIS this time was"global services,shared prosperity",which is not only a window for allowing the world to discover the development of China's service trade,but is also a bridge for promoting global cooperation with regards to the service trade.As one of the world-famous service trade events,the CIFTIS has become an important business card allowing China to open up.The CIFTIS has attracted the attention of the whole world and become a bridge for all parties to share development opportunities,promote industrial growth,and strengthen communication. 展开更多
关键词 trade SERVICES SERVICE
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World Trade Organization Reform and the Role of the Global South
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作者 Zhang Jianping 《Contemporary World》 2024年第2期24-28,共5页
Under the impact of unilateralism and protectionism,trade disputes among countries have increased in recent years,bringing uncertainty to global trade and jeopardizing the multilateral trading system.The World Trade O... Under the impact of unilateralism and protectionism,trade disputes among countries have increased in recent years,bringing uncertainty to global trade and jeopardizing the multilateral trading system.The World Trade Organization(WTO)plays a crucial role in the development of the global economy and trade.It also plays a key role in maintaining a fair,open and sustainable international trade environment,and provides a solid foundation for the development of global economy and trade.As the Global South has played an important role in promoting WTO reform and safeguarding the rights and interests of developing countries,it’s important to further strengthen its solidarity,actively participate in the reform of the global trade governance system and promote the building of a more open,fair and balanced global trade environment. 展开更多
关键词 TRADING trade WTO
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Production and trade trend of oils and oilseeds in BRICS countries
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作者 ZHANG Hong 《中国油脂》 CAS CSCD 北大核心 2024年第8期1-10,共10页
In order to promote agricultural production and trade cooperation among BRICS countries,and ensure the security and stability of the oils and oilseeds industrial and supply chains in China and the world,the production... In order to promote agricultural production and trade cooperation among BRICS countries,and ensure the security and stability of the oils and oilseeds industrial and supply chains in China and the world,the production,consumption,trade trend,and cooperation potential of oils and oilseeds in BRICS countries were expounded,and relevant policy recommendations were put forward.Most of the BRICS countries are major agricultural producers,and they are also important agricultural product consumption markets in the world.In 2023/2024,the production and consumption of oilseeds in BRICS countries account for nearly half of the world's total;the production of vegetable oils exceeds a quarter of the world's total,and the consumption of vegetable oils accounts for 40%of the world's total.In 2023/2024,the import and export volume of oilseeds exceeds half of the world's total;vegetable oil imports account for 40%of the world's total,and exports account for about one tenth of the world's total.China's imports of oilseeds and oils from BRICS countries account for 68%and 29%of its global imports in 2023,respectively.BRICS countries are rich in agricultural land resources,have great potential for oils and oilseeds production,obvious complementary advantages in trade structure,and huge space for future cooperation.It is suggested that Brazil should be included in the"Belt and Road"co-construction category to promote the continuous deepening of agricultural cooperation between China and Brazil.It is suggested to explore regional agricultural trade agreements among BRICS countries,promote currency settlement and exchange among BRICS countries,and enhance the facilitation and stability of BRICS trade.It is suggested that China should increase its investment in BRICS countries and export advanced technology and management experience to benefit local agricultural development and achieve a mutually beneficial and win-win situation. 展开更多
关键词 BRICS countries oils and oilseeds production and consumption trade trend agricultural potential
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Facilitating Trade Across Borders
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作者 Wang Zhe 《China Report ASEAN》 2024年第4期23-25,共3页
“The Government Work Report noted that‘development of the New International Land-Sea Trade Corridor will be accelerated’,”stated Wei Zhaohui,member of the Standing Committee of the 14th National Committee of the C... “The Government Work Report noted that‘development of the New International Land-Sea Trade Corridor will be accelerated’,”stated Wei Zhaohui,member of the Standing Committee of the 14th National Committee of the Chinese People’s Political Consultative Conference(CPPCC)and director-general of the Guangxi International Expo Affairs Bureau,in an interview after the Second Session of the 14th National People’s Congress on March 5. 展开更多
关键词 trade stated INTERVIEW
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Policies Aiming at Stabilizing Foreign Trade Continue to Work
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作者 Lily Wang 《China's Foreign Trade》 2024年第3期23-25,共3页
On May 30,t he Ch ina Council for the Promotion of International Trade(CCPIT)held a regular press conference.Zhao Ping,the spokesperson for the CCPIT,said that since the beginning of this year,the number of issued ATA... On May 30,t he Ch ina Council for the Promotion of International Trade(CCPIT)held a regular press conference.Zhao Ping,the spokesperson for the CCPIT,said that since the beginning of this year,the number of issued ATA Carnets has increased significantly,reflecting the fact that China’s foreign trade policy portfolio is taking effect,foreign trade enterprises have been more active,and their motivation and enthusiasm for expanding the international market have continued to rise. 展开更多
关键词 trade ENTERPRISES continued
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How Can Foreign Trade Be Stabilized?
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作者 Zhao Ailing 《China's Foreign Trade》 2024年第2期32-34,共3页
At an economy-themed press conference held on the day of the Second Session of the 14th National People's Congress,Minister of Commerce Wang Wentao admitted that the situation of foreign trade situation is still&q... At an economy-themed press conference held on the day of the Second Session of the 14th National People's Congress,Minister of Commerce Wang Wentao admitted that the situation of foreign trade situation is still"very severe"this year.When it comes to the future policies for stabilizing foreign trade,Wang Wentao said that the government will provide better financial services forforeign trade enterprises. 展开更多
关键词 trade ENTERPRISES admitted
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Next-Level Relations China-Laos Economic and Trade Cooperation Exchange Conference fortifies bilateral economic ties
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作者 Gao Yuan Chang Xiang 《China Report ASEAN》 2024年第10期52-53,共2页
On September 5,the ChinaLaos Economic and Trade Cooperation Exchange Conference,themed"Highlevel Opening-up and Building a China-Laos Community with a Shared Future,"took place in Vientiane,capital of Laos.T... On September 5,the ChinaLaos Economic and Trade Cooperation Exchange Conference,themed"Highlevel Opening-up and Building a China-Laos Community with a Shared Future,"took place in Vientiane,capital of Laos.The purpose of the conference was to review the achievements of bilateral economic and trade cooperation and work together to develop the roadmap to high-quality development of China-Laos economic and trade cooperation by focusing on shared goals,pooling strength,and adhering to results-oriented collaboration. 展开更多
关键词 trade EXCHANGE BILATERAL
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Enhancement of Competitiveness of Border Trade Entrepreneurs: Case Study of Su-Ngai Kolok Checkpoint, Narathiwat Province
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作者 Sumalee Grodgangunt Roihan Saaree +2 位作者 Chonlakan Satabodee Rungsiri Padungrat Mathurose Tongintharach 《Management Studies》 2024年第4期225-244,共20页
This research aimed to analyze the enhancement of competitiveness among fruit and vegetable export entrepreneurs,with the case study of the Su-ngai Kolok checkpoint in Narathiwat Province.This research focused on thre... This research aimed to analyze the enhancement of competitiveness among fruit and vegetable export entrepreneurs,with the case study of the Su-ngai Kolok checkpoint in Narathiwat Province.This research focused on three objectives:(1)examining how competitiveness is enhanced through government support and the development of border trade zones,(2)studying the supply chain dynamics,including strategic factors and opportunities in agricultural product management,and(3)developing a model for border trade to strengthen exporters’capabilities.The research employed qualitative methods,with data collected from 25 informants through interviews and employed descriptive methods.The research results revealed that:(1)government agencies play a crucial role in improving competitiveness by developing border economic zones and trade policies;additionally,(2)the research highlighted the importance of strategic partnerships,network building,and efficient logistics along the value chain;(3)the proposed Border Trade Model includes elements for instance government policy,partnerships,entrepreneurial potential,and transportation channels,aiming to enhance the overall efficiency and effectiveness of vegetable and fruit exporters in the region. 展开更多
关键词 ENHANCEMENT COMPETITIVENESS border trade entrepreneurs
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The Influence of the Implementation of Trade Facilitation Systems on the Time Required for Creating Delivery Orders: A Case Study of Tema Port
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作者 Justice Awosonviri Akodia Clement K. Dzidonu +2 位作者 David King Boison Philip Kisembe Joseph Gbandi 《World Journal of Engineering and Technology》 2024年第3期529-539,共11页
This study evaluated the impact of Ghana’s Integrated Customs Management System (ICUMS), implemented within the National Single Window initiative, on the efficiency of issuing Delivery Orders (DO) at Tema Port. Filli... This study evaluated the impact of Ghana’s Integrated Customs Management System (ICUMS), implemented within the National Single Window initiative, on the efficiency of issuing Delivery Orders (DO) at Tema Port. Filling a gap in the existing literature, the research employed a quantitative approach to assess a specific time-related aspect of the cargo clearance process. Employing an Independent t-test on a dataset spanning 2026 Delivery Orders (924 pre-ICUMS and 1102 post-ICUMS) from July 2020 to July 2023, the study investigated ICUMS’s effectiveness in reducing DO issuance time. Results indicate a noteworthy decrease in average DO issuance time, from 11 days pre-implementation to approximately 9 days post-implementation, a reduction validated by statistical analysis through the independent t-test. In light of these findings, the study recommends ongoing refinement of the implementation, reinforcement of trade facilitation measures, and the adoption of best practices from successful global ports. Continuous stakeholder training and regular assessments of ICUMS performance are also endorsed. The study’s implications support the theoretical framework for Single Window systems and carry significant policy implications, emphasizing the need for collaborative efforts to streamline trade facilitation processes driven by Information Technology. Practically, the results serve as a management tool for stakeholders, highlighting areas for targeted interventions to reduce DO issuance times. Methodologically, this research contributes by applying robust statistical analysis to a specific component within the Time Release Study framework, offering a nuanced understanding of trade facilitation systems’ effectiveness in improving cargo clearance processes. 展开更多
关键词 Cargo Clearance Container Dwell Time Single Window trade Facilitation
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The Tenth Anniversary of Free Trade Pilot Zones in China:Fundamental Experiences and Enhancement Strategies
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作者 Pei Changhong 《China Economist》 2024年第3期2-20,共19页
Since the 18th National Congress of the Communist Party of China,the country has established 21 Free Trade Pilot Zones(FTZs),achieving significant pioneering results in reform and opening up and creating a strong demo... Since the 18th National Congress of the Communist Party of China,the country has established 21 Free Trade Pilot Zones(FTZs),achieving significant pioneering results in reform and opening up and creating a strong demonstrative effect nationwide.The basic experience from a decade of FTZs includes:adhering to the centralized and unified leadership of the CPC Central Committee;combining top-level design with encouragement of grassroots innovation;leveraging the distinct characteristics and strengths of FTZs to form a differentiated development pattern;maintaining the integration of opening up with domestic reforms;using openness to drive reforms;and organically combining openness with national security assurance.Under the current and future new circumstances,China’s FTZs face new challenges and tasks.In accordance with the directives of the 20th National Congress of the Communist Party of China,an enhancement strategy for the FTZs needs to be implemented.This involves the following:First,accurately understanding and responding to the changing situation to create strategic opportunities.Second,shifting paradigms to implement innovation-driven strategies,using the new development pattern concept to guide the reform experiments and construction of the FTZs.Third,granting more autonomy to FTZs for reforms,pursuing progress while maintaining stability,and solidly advancing the reform experiments in the FTZs.Fourth,orderly expanding the opening up of the service sector and cautiously advancing the internationalization of the renminbi.Fifth,promoting innovative development in trade to build a strong trade nation.Sixth,establishing synergy with bilateral FTZs,Belt and Road cooperation,and national diplomatic strategies to enhance the linkage effect. 展开更多
关键词 Tenth anniversary of Free trade Pilot Zones experience summary enhancement strategy conception
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Analysis of the Impact of Technical Trade Barriers on the Export of Toys-Based on Analysis of Zhejiang,China
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作者 LIU Ningning CHEN Xiaoxi 《Chinese Business Review》 2024年第1期37-46,共10页
Technical barriers to trade,as a non-tariff barrier,have an increasing impact on the international market.As a major province in toy exports,Zhejiang Province’s toy export trade is therefore greatly hindered.This art... Technical barriers to trade,as a non-tariff barrier,have an increasing impact on the international market.As a major province in toy exports,Zhejiang Province’s toy export trade is therefore greatly hindered.This article aims to explore the impact of technical trade barriers on toy exports in Zhejiang Province and analyze countermeasures.Through literature review and some empirical analysis,it is found that technical trade barriers have greatly promoted the development of Zhejiang’s toy industry;however,they have also subjected it to impacts and pressures such as cost and technology.In response to the impact of technical trade barriers on toy exports,this article proposes corresponding countermeasures to avoid such barriers:firstly,establish a quality management system that complies with export product regulations to ensure that the products produced can meet international requirements and standards;secondly,reduce dependence on overseas markets;then enhance one’s own technology,and strengthen product innovation,in order to enhance the international competitiveness of the product and oneself;in addition,we should also explore diversified markets and expand the sales channels and coverage of our products. 展开更多
关键词 technical trade barriers Zhejiang Province export of toys countermeasure analysis
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Preserving the Ozone Layers: Battling Illegal Trade in Ozone-Depleting Substances
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作者 Ibrahim Badawi 《Atmospheric and Climate Sciences》 2024年第3期287-298,共12页
The depletion of the ozone layer, a vital shield protecting the Earth from harmful ultraviolet (UV) radiation, is now a worldwide environmental concern. Human activities, particularly the release of ozone depleting su... The depletion of the ozone layer, a vital shield protecting the Earth from harmful ultraviolet (UV) radiation, is now a worldwide environmental concern. Human activities, particularly the release of ozone depleting substances (ODS), have led to the thinning of this protective layer over recent decades. Simultaneously, illegal trade has emerged as a global challenge, giving rise to economic issues, losses of tax revenue, heightened criminal activities, health risks, and environmental hazards. The depletion of the ozone layer, a critical shield protecting the Earth from harmful ultraviolet (UV) radiation, has become a global environmental concern. This paper delves into the legal dimensions surrounding ozone-depleting substances (ODS), their impact on the ozone layer, and the subsequent risk of skin cancer. As countries navigate international agreements, domestic regulations, and enforcement mechanisms, the intricate interplay between legal frameworks and the health implications of ozone layer depletion comes to the forefront. The paper highlights particular instances of illegal trade in ozone depleting substances, drawing from data reported by the parties to the Montreal Protocol. Notably, China stands out as a significant source of contraband ODS, with other countries such as Bulgaria, Lithuania, Poland, and France reporting numerous cases. Analyzing these case instances offers insights into the efficacy of legal frameworks and enforcement measures. The paper offers a comprehensive set of recommendations to strengthen global control and enforcement against the illegal trade of ozone depleting substances. These recommendations span diverse aspects such as production monitoring, customs collaboration, mutual verification, cross-border agreements, public-private partnerships, international cooperation, detection equipment, global regulatory standards, resource allocation, public awareness campaigns, alternative substance development, and controlling the trade at its source. By applying these recommendations and enhancing enforcement measures, we aim to protect the ozone layer and create a healthier and safer world for future generations and achieve sustainable development goals. 展开更多
关键词 Ozone-Depleting Substances Illegal trade Montreal Protocol Environmental Protection Ozone Layers Climate Change
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An analysis of agarwood trade patterns,historical perspectives,and species identification challenges:repercussions for importing nations
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作者 Zhao-Qi Xie Jun-Yu Xu +1 位作者 Muhammad Rafiq Chun-Song Cheng 《TMR Modern Herbal Medicine》 CAS 2024年第1期1-10,共10页
Background:Agarwood,primarily derived from the Aquilaria and Gyrinops genera,holds significant economic importance.However,there is a lack of comprehensive investigations providing guidance to importing nations regard... Background:Agarwood,primarily derived from the Aquilaria and Gyrinops genera,holds significant economic importance.However,there is a lack of comprehensive investigations providing guidance to importing nations regarding cultivation quantities and expected yields of Agarwood from distinct species.This study aims to address this gap by exploring the historical context and trade evolution of Agarwood,highlighting its global importance,and the challenges associated with securing accurate species information.Method:On-site visits to Agarwood cultivation sites were conducted to gain a nuanced understanding of Aquilaria species and their cultivation requirements.Additionally,a thorough analysis of global export and import data for Agarwood products over the last decade was undertaken.Results:China Mainland emerged as the leading exporter of Agarwood,averaging an annual export value of USD 1 million.India’s substantial exports challenge the prevailing notion of limited Agarwood production within its borders.Hong Kong and Singapore are pivotal distribution hubs,while Hong Kong and Taipei feature prominently as import destinations.Our analysis uncovers anomalies in the representation of Agarwood producers from 2001 to 2008,suggesting potential misclassification of Aquilaria Agarwood as Gyrinops in global export information.These findings underscore the urgency of investigating classification and reporting practices in the Agarwood trade.Furthermore,A.filaria emerges as a notable source,while A.malaccensis is decline in prominence.Conclusion:This study provides crucial insights for policymakers,stakeholders,and industry players seeking to make informed decisions in the Agarwood trade landscape.The results highlight the need for accurate species identification,classification,and reporting practices to ensure sustainable cultivation and trade of Agarwood. 展开更多
关键词 AGARWOOD import and export trends global trade field visits industry analysis
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Analysis of the Characteristics and Development Direction of Services Trade in Shandong Province of China
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作者 Huiqian Yu 《Proceedings of Business and Economic Studies》 2024年第1期139-144,共6页
Shandong is a significant province for foreign trade in China;however,it still faces shortcomings in the development of its service trade,as outlined below.Firstly,the scale of service trade is limited.Shandong’s ser... Shandong is a significant province for foreign trade in China;however,it still faces shortcomings in the development of its service trade,as outlined below.Firstly,the scale of service trade is limited.Shandong’s service trade volume ranked sixth in China in 2022,lagging considerably behind Shanghai,Guangdong,Beijing,Zhejiang,and Jiangsu.Secondly,the proportion of service trade in Shandong compared to the overall national services trade volume falls below the national average,with the per capita scale even lower than the national average.Thirdly,Shandong’s service trade accounts for less than 10% of the province’s foreign trade,which is 3 percentage points below the national average.The insufficient development of Shandong’s service trade is mainly attributed to the weak performance of its own service industry and the limited scale of attracting foreign services investment.Accelerating the development of producer services in Shandong,promoting the intelligent upgrading of consumer services,and continuously promoting reform and opening up in the service sector will be conducive to achieving high-quality development of services trade in Shandong. 展开更多
关键词 SHANDONG Services trade Productive services trade
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Exploration of the Construction of Economic Service Trade System under the Background of Hainan Free Trade Port
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作者 Chang Han 《Proceedings of Business and Economic Studies》 2024年第4期130-135,共6页
China has a large population,a large middle-income group,and a wide consumer market coverage.In the context of economic globalization,the connection between the Chinese economy and the world industrial chain has been ... China has a large population,a large middle-income group,and a wide consumer market coverage.In the context of economic globalization,the connection between the Chinese economy and the world industrial chain has been further strengthened,contributing to the development of the global economy.Under the background of the Hainan Free Trade Port,building an economic service trade system will help to create a new highland for economic service trade,promote the development of China’s service trade,and facilitate the rational allocation of resources on a global scale.Because of this,the article will analyze the opportunities for building an economic service trade system and the challenges of building an economic service trade system under the background of Hainan Free Trade Port,and focus on analyzing the path strategies for building an economic service trade system to create a high-level new highland of service trade and actively face the challenges of era development and economic upgrading[1]. 展开更多
关键词 HAINAN Free trade port Economic service trade system BUILD
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SWOT Analysis and Recommendations for Enhancing Sino-Russian Agricultural Trade Cooperation
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作者 Huilan Fang 《Proceedings of Business and Economic Studies》 2024年第2期163-169,共7页
With the outbreak of the Russian-Ukraine conflict,the changes in agricultural trade between China and Russia are receiving more and more attention.This study analyzes the current status of Sino-Russian agricultural tr... With the outbreak of the Russian-Ukraine conflict,the changes in agricultural trade between China and Russia are receiving more and more attention.This study analyzes the current status of Sino-Russian agricultural trade and employs a SWOT analysis to explore the strengths,weaknesses,opportunities,and threats within their agricultural trading activities.The findings suggest there are opportunities for further optimization and enhancement in the Sino-Russian agricultural trade.Based on this,suggestions proposed include accelerating the development of transportation hubs,facilitating agricultural trade,refining legal frameworks for agricultural exports,and expediting the establishment of economic cooperation zones. 展开更多
关键词 trade scale trade structure SWOT analysis Countermeasures and suggestions
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The Study of Mutual Benefits and Potential in China-Mongolia Agricultural Trade
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作者 Siriguleng Bao 《Proceedings of Business and Economic Studies》 2024年第3期200-205,共6页
This article aims to explore the mutual benefits and potential of agricultural trade between China and Mongolia,analyzing the current situation of agricultural resources,trade history,and policy environment of the two... This article aims to explore the mutual benefits and potential of agricultural trade between China and Mongolia,analyzing the current situation of agricultural resources,trade history,and policy environment of the two countries.The study finds that China-Mongolia agricultural trade shows significant economic complementarity.Trade activities not only promote economic growth in both countries but also deepen social and cultural exchanges.However,technical standards,political risks,and logistics costs remain major challenges facing trade cooperation.By strengthening policy coordination,investing in agricultural technology and infrastructure,and expanding the variety and markets of trade,the potential for cooperation in China-Mongolia agricultural trade can be further enhanced.These measures will help improve the efficiency and benefits of bilateral trade,achieving a win-win development. 展开更多
关键词 Agricultural trade MUTUALITY POTENTIAL Agricultural technology
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分离膜的Trade-off效应及其突破研究进展
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作者 杨誉名 贾子钰 杨春维 《应用化工》 CAS CSCD 北大核心 2024年第6期1466-1468,共3页
综述通过文献调研,对膜材料在水通量与污染物截留效率之间存在的此消彼长的Trade-off效应进行分析,并对近几年国内外突破分离膜Trade-off效应的方法进行了总结。结果表明,膜表面接枝两性离子技术、非溶剂诱导相分离技术、结构改性技术... 综述通过文献调研,对膜材料在水通量与污染物截留效率之间存在的此消彼长的Trade-off效应进行分析,并对近几年国内外突破分离膜Trade-off效应的方法进行了总结。结果表明,膜表面接枝两性离子技术、非溶剂诱导相分离技术、结构改性技术、物理共混技术、表面涂覆技术等可以突破该技术瓶颈。而物理共混技术表现出非常优异的效果,且该技术方法相对简便,无需更新设备,易于实施,制备出的膜材料具有良好的机械性能和产水能力。综述为高效分离膜的开发提供了新的技术思路,为膜技术的应用和推广提供有益的技术借鉴。 展开更多
关键词 trade-off规律 膜材料 表面接枝法 表面涂覆法 掺杂法
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