A Discussion on Innovative Methods for Green Engineering Management in Construction Engineering

With the rapid development of society,the construction industry has made significant progress.However,as environmental issues intensify,many construction projects contribute to pollution.In this context,applying green project management methods in construction can enhance energy conservation and environmental protection,reduce energy consumption and costs,and minimize environmental damage,promoting balanced development between the environment and the economy.Therefore,integrating green construction concepts into current construction projects is essential.Based on project requirements and construction activities,effective green project management strategies should be developed to improve management standards and promote more efficient green construction.This paper analyzes green project management in construction engineering and offers recommendations for reference.

Research on Quality Management Measures of Green Building Construction

Urbanization has led to the rapid development of the construction industry.However,this has also led to higher requirements for the construction engineering management.Other than the quality monitoring of engineering construction,the energy-saving properties of the building should also be considered.Therefore,a scientific management approach should be adopted to improve green building management.This paper primarily examines the importance of quality management in green building construction,along with the factors influencing it.It also identifies the quality issues present in current green building construction.Finally,it proposes measures for quality management in the green building construction process to facilitate the industry’s healthy development.

An Overview of Metal-Organic Frameworks for Green Chemical Engineering

Given the current global energy and environmental issues resulting from the fast pace of industrialization,the discovery of new functional materials has become increasingly imperative in order to advance science and technology and address the associated challenges.The boom in metal–organic frameworks(MOFs)and MOF-derived materials in recent years has stimulated profound interest in exploring their structures and applications.The preparation,characterization,and processing of MOF materials are the basis of their full engagement in industrial implementation.With intensive research in these topics,it is time to promote the practical utilization of MOFs on an industrial scale,such as for green chemical engineering,by taking advantage of their superior functions.Many famous MOFs have already demonstrated superiority over traditional materials in solving real-world problems.This review starts with the basic concept of MOF chemistry and ends with a discussion of the industrial production and exploitation of MOFs in several fields.Its goal is to provide a general scope of application to inspire MOF researchers to convert their focus on academic research to one on practical applications.After the obstacles of cost,scale-up preparation,processability,and stability have been overcome,MOFs and MOF-based devices will gradually enter the factory,become a part of our daily lives,and help to create a future based on green production and green living.

Microinterfacial technology enhancing mass transfer in chemical engineering

The microbubble and microinterface play key roles in the development and progress of the technology in the field of chemical engineering,which has attracted broad attention from the scientific and industrial community.Recently,Zhang et al.published a book about microinterfacial mass transfer intensification technology,where they systematically introduced scientific essence,reaction mechanism,equipment structure,and influence law of multiphase reaction process strengthened by microinterface.I believe this book can promote the technological innovation of microbubble-related processes,and also the development of the green chemical industry!

Green Production Technology of the Monomer of Nylon-6： Caprolactam

After two decades＇ endeavor, the Research Institute of Petroleum Processing （RIPP） has successfully de- veloped a green caprolactam （CPL） production technology. This technology is based on the integration of titanium silicate （TS）-I zeolite with the slurry-bed reactor for the ammoximation of cyclohexanone, the integration of silicalite-1 zeolite with the moving-bed reactor for the gas-phase rearrangement of cyclohex- anone oxime, and the integration of an amorphous nickel （Ni） catalyst with the magnetically stabilized bed reactor for the purification of caprolactam. The world＇s first industrial plant based on this green CPL produc- tion technology has been built and possesses a capacity of 200 kt·a-1. Compared with existing technologies, the plant investment is pronouncedly reduced, and the nitrogen （N） atom utilization is drastically improved. The waste emission is reduced significantly; for example, no ammonium sulfate byproduct is produced. As a result, the price difference between CPL and benzene drops. In 2015, the capacity of the green CPL produc- tion technology reached 3 ×10-6 t·a-1, making China the world＇s largest CPL producer, with a global market share exceeding 50%.

Systematic Selection of Green Solvents for Organic Reacting Systems

The solvent selection methodology developed earlier by. Gani （tal. （Comp. Chem. Eng., 2005）has been extended to handle multi-step reaction systems. The solvent selection problem was formulated based on the methodology guidelines, and solved using ICAS software tool. A list with solvent candidates is generated so that it can be further investigated experimentally. Comments and clarifications from chemists have been incorporated into the problem forrnulations to clarify the role of the solvents in the chemistry and potential reactivity issues. Highly promising results were obtained, in accordance with. industrial process data.

Preparation and characterization of neodymium hydroxide powder via the hydration method

The preparation of Nd(OH)3 powder by the direct hydration method using Nd2O3 as a raw material was studied,and the effects of stirring mode,H2O and Nd2O3 molar ratio,stirring rate,and reaction time on temperature change and conversion rate in a hydration system were analyzed.The reasonable process conditions for the direct hydration of Nd(OH)3 by Nd2O3 were then determined.Process,morphology,and structure were considered in the preparation of neodymium hydroxide powder,and its composition was investigated by X-ray powder diffraction,scanning electron microscopy,laser particle size analysis,thermogravimetric differential thermal analysis,and chemical analysis.It has been proved that the process is simple and feasible,in line with the concept of modern green chemistry,and the products also meet the market requirements.

新创英文科技期刊国际影响力提升的实践举措——以Green Chemical Engineering为例

【目的】探讨我国英文科技期刊提升国际影响力的举措,为我国科技期刊特别是新创英文科技期刊提供一些思路和借鉴。【方法】以新创期刊Green Chemical Engineering(《绿色化学工程(英文)》,以下简称GreenChE)为例,总结GreenChE在国际化发展过程中的实践和举措,重点从人才队伍、稿件质量、多维度传播等方面进行探索讨论。【结果】从筹备至今,经过近两年的探索发展,GreenChE已取得一定的建设成效,学术质量与国际影响力逐步提升,先后被DOAJ、Scopus、CSCD等数据库收录。【结论】新创英文科技期刊在筹办与发展过程中会面临很多困难与挑战,在借鉴成功办刊经验的基础上,结合GreenChE的实际,进一步探索出设置编委分类名单、打造期刊品牌效应、细化邮件推送策略等特色举措,从而实现新创期刊国际影响力的快速提升。

Industry-compatible covalent organic frameworks for green chemical engineering

In order to move towards sustainable development, the discovery of energy-efficient and environmentally friendly materials has become increasingly imperative. Covalent organic frameworks(COFs) as emerging designable crystalline porous materials have captured increasing attention for a wide array of clean-energy and environmental applications, attributed to their attractive advantages of low density, high surface area, adjustable and periodic pores, and functional skeletons. This review attempts to highlight the key advancements made in the green synthesis of COFs, processing of COFs, energy and environment-related applications, including gas storage, water treatment, the separation of gas mixture and organic molecules, catalysis, supercapacitors, fuel cell, and rechargeable batteries. Finally, a perspective regarding the remaining challenges and future directions on the synthesis and promising application for green chemical engineering of COFs has also been presented based on current achievements.

THE ROLE OF HVFA CONCRETE IN THE SUSTAINABILITY OF THE URBAN BUILT ENVIRONMENT

Although fly-ash as a partial replacement for cement has been utilized for many years,its use has been almost exclusively used in low volume percentages such as 10%or 20%cement replacement.This paper looks at high volume percentage replacements from 40%to 70%.A mini-mix study revealed that 50%and 60%cement replacement percentages were the best candidates for full scale testing.The environmental benefits included a 25%reduction in smog,human health,and fossil fuel reduction compared to the same element built with 100%Portland cement mix.The economic benefits included a 15%capital cost reduction and a 20%life-cycle cost reduction when compared with a 100%Portland cement mix.Full scale testing included a complete mix design in addition to the construction of four concrete infrastructure products.The products built included an alley panel and curb and gutter sections in the City and county of Denver,a precast manhole and lid,and a twin tee prestressed girder.Although cement products are just one of many materials used in the construction of the built environment,its production has a large impact on the environment.Lowering the embodied energy of multiple types of construction materials will have a significant effect on sustainable urban development.Symbiotic recycling of waste material,such as fly ash in concrete,back into the built environment can help reduce materials on the input side and pollution on the output side of the bulk material flow of an urban city.

Multi-functional engineered polypeptide-based drug delivery systems for improved cancer therapy

With the rapid development of chemical engineering and biotechnology,polypeptide,as a promising candidate in the biomedical field,has been thoroughly investigated and extensively used as the drug delivery vehicle for diseases treatment,especially cancer,owing to the high biocompatibility,good biodegradability,versatile con-structions,and diverse functions.Engineered polypeptide-based drug delivery system(so-called EPP-DDS)can deliver the cargos to the target site via a specific recognition effect,followed by overcoming the barriers like blood brain barrier(BBB)and releasing them by responding to the microenvironment cues,to improve the therapeutic efficacy and reduce the side-effect.Herein,it's of great importance to conclude and summarize the updates on EPP-DDS developed by chemical engineering methods.In this review,we first summarized the recent updates in the manufacturing of polypeptide and preparation of EPP-DDS based on green biochemical engineering and/or synthetic processes for cancer therapy,including chemotherapy,immunotherapy,photodynamic therapy(PDT),gene therapy,and combination therapy.Then,we surveyed the research progress of inflammation-mediated cancer treatment strategies based on EPP-DDS with high anti-inflammation activity.Finally,we concluded the discovery and green production process of engineered polypeptide,challenges,and perspectives of EPP-DDS.Overall,the EPP-DDS has great potential for cancer therapy in the clinic with improved therapeutic efficacy and reduced adverse effect,which needs the innovation of green biochemical engineering for customized design and production of polypeptides.

Carbon neutrality needs a circular metal-energy nexus

Carbon neutrality requires systematic transformations of both energy and metal systems.These transformations are not isolated but rather interlinked and interdependent,such that trade-offs between different strategies exist.Herein,we explore the critical interlinkages between energy and metal systems and further propose a circular metal-energy nexus to advance global coordinated actions towards a carbon-neutral future.