期刊文献+
共找到6篇文章
< 1 >
每页显示 20 50 100
Study on the Optimized Combination and Utilization of Waste Resources of Agriculture and Animal Husbandry in Tibet
1
作者 Huaguo ZHANG 《Meteorological and Environmental Research》 CAS 2021年第2期52-54,共3页
With the high-quality development of modern agriculture and animal husbandry in the plateau,the waste resources produced by agriculture and animal husbandry show a trend of diversification.How to effectively carry out... With the high-quality development of modern agriculture and animal husbandry in the plateau,the waste resources produced by agriculture and animal husbandry show a trend of diversification.How to effectively carry out the key work based on the optimal combination and utilization of waste resources of agriculture and animal husbandry in Tibet is imminent.To realize efficient recycling of waste resources of agriculture and animal husbandry,innovative mode is explored.On the theoretical basis,it can effectively alleviate the resource crisis,control the pollution sources,effectively utilize the resources and construct the recycling mode,which plays an important role in promoting,integrating and coordinating the high-quality development of modern agriculture and animal husbandry in the plateau.In this paper,optimal combination and utilization manner of waste resources of agriculture and animal husbandry under the circular development concept is comprehensively analyzed and summarized,to continuously improve reasonable and effective utilization level and efficiency of agricultural waste resources.It could not only inhibit waste pollution but also promote rational and effective utilization of resources,thereby laying theoretical basis for sustainable and efficient development of agriculture and animal husbandry in Tibet,promoting the improvement of agricultural and rural ecological environment,and providing the thinking for exploring model of ecological recycling in plateau. 展开更多
关键词 Agriculture and animal husbandry waste resources Optimized combination UTILIZATION
下载PDF
Comparative Nutritional Analysis on Fish Meal and Meat and Bone Meal of Harmless Treatment of Dead Pig Carcass 被引量:3
2
作者 Xiaofei CHENG Jin XIANG +5 位作者 Shiming DENG Xing TIAN Xiping YUAN Shaoming LI Rui SONG Li LIU 《Agricultural Biotechnology》 CAS 2020年第6期36-39,共4页
In order to explore the resource utilization of the harmless treatment product(pork meat and bone meal,abbreviated PM)of pigs died of non-communicable diseases,the general nutritional components and amino acid composi... In order to explore the resource utilization of the harmless treatment product(pork meat and bone meal,abbreviated PM)of pigs died of non-communicable diseases,the general nutritional components and amino acid composition of PM and fish meal were determined and compared.The results showed that the contents of moisture,crude protein,crude fat and ash in PM and fish meal were 3.25%and 8.92%,66.65%and 66.67%,13.52%and 8.23%,18.25%and 21.50%,respectively.The contents of essential amino acids(EAA)in PM and fish meal were 19.94%and 22.35%,respectively.For PM and fish meal,the first limiting amino acid was Met(methionine)+Cys(cysteine),and the second limiting amino acid was Lys(lysine);their essential amino acid indexes(EAAI)were 66.60 and 77.04,respectively;and their delicious amino acid(DAA)contents were 26.89%and 23.15%,respectively.In summary,the meat and bone meal of pigs died of non-communicable diseases has the characteristics of high protein and low ash contents,and has certain development and utilization potential as a recycled waste resource,especially in aquatic feed to replace fish meal. 展开更多
关键词 Dead pigs from non-communicable diseases Reuse of waste resources Pork meat and bone meal Fish meal Nutritional content Amino acid Amino acid score(AAS) Chemical score(CS) Essential amino acid index(EAAI) Delicious amino acids
下载PDF
Synthesis of biochar/clay mineral nanocomposites using oil shale semi-coke waste for removal of organic pollutants 被引量:2
3
作者 Feng Zhao Bin Mu +4 位作者 Tenghe Zhang Chunjuan Dong Yongfeng Zhu Li Zong Aiqin Wang 《Biochar》 SCIE CAS CSCD 2023年第1期123-143,共21页
Due to the poor surface/interfacial interaction and the large gaps in the size and microstructure between biomass and clay mineral,it was difficult to adjust the structure and performance of biochar/clay mineral compo... Due to the poor surface/interfacial interaction and the large gaps in the size and microstructure between biomass and clay mineral,it was difficult to adjust the structure and performance of biochar/clay mineral composites at the molecular level.Herein,oil shale semi-coke composed of multi-minerals and organic matters was used as a promising precursor to prepare biochar/clay mineral nanocomposites via phosphoric acid-assisted hydrothermal treatment followed by KOH activation for removal of organic pollutants from aqueous solution.The results revealed that the nanocomposites presented well-defined sheet-like morphology,and the carbon species uniformly anchored on the surface of clay minerals.With the changes in the pore structure,surface charge and functional groups after two-step modification,the nanocomposites exhibited much better adsorption property toward organic pollutants than the raw oil shale semi-coke,and the maximum adsorption capacities of methylene blue,methyl violet,tetracycline,and malachite green were 165.30 mg g^(−1),159.02 mg g^(−1),145.89 mg g^(−1),and 2137.36 mg g^(−1),respectively.The adsorption mechanisms involved electrostatic attraction,π-πstacking and hydrogen bonds.After five consecutive adsorption-desorption,there was no obvious decrease in the adsorption capacity of malachite green,exhibiting good cyclic regeneration performance.It is expected to provide a feasible strategy for the preparation of biochar/clay mineral nanocomposites with the excellent adsorption performances for removal of organic pollutants based on full-component resource utilization of oil shale semi-coke. 展开更多
关键词 Oil shale semi-coke Clay mineral Biochar nanocomposites Adsorption mechanism Solid waste resource utilization
原文传递
Optimization of pelleting parameters for producing composite pellets using agricultural and agro-processing wastes by Taguchi-Grey relational analysis 被引量:4
4
作者 Shyam Thapa Robert Engelken 《Carbon Resources Conversion》 2020年第1期104-111,共8页
Agricultural and agro-processing sector produces large stream of by-products that are either discarded or are underutilized.Lignocellulosic biomass especially crop residues’potential to green energy development has b... Agricultural and agro-processing sector produces large stream of by-products that are either discarded or are underutilized.Lignocellulosic biomass especially crop residues’potential to green energy development has been investigated.Material conditions as process variable was made a centerpiece of investigation in the present study since several parameters in the feedstock mixture come into interplay during pelletization.Moisture,binders,blending ratio,particle size,and principle feedstock material were the parameters of our interest in finding their effect on physical and thermochemical characteristics.It is also an endeavor to investigate low cost binder options in producing composite pellets of high quality.A Taguchi L9 orthogonal array experimental design was employed and Taguchi based Grey relational analysis was performed to determine the best combinatorial optimization of factor levels settings for producing best pellets.The optimal parameter level settings for pelletization was determined to be 3.18 mm wheat feedstock material blended with pine shavings at 60/40 ratio.An analysis of variance(ANOVA)was conducted to identify the contribution of each parameter.The magnitude of the significant impacts of parameters on performance characteristics were in the order of binder>blend ratio>grind>feedstock material.Results also showed that the physico-chemical characteristics of the pellets were concomitant with the proportion of ingredients or recipes in a blend. 展开更多
关键词 Agricultural waste Crop residues OPTIMIZATION PELLETIZATION Grey relational analysis Taguchi analysis Agricultural waste management resource conversions and conservation waste conversion into resource
原文传递
Coal fly ash reinforcement for the property enhancement of crude glycerol-based polyurethane foam composites 被引量:4
5
作者 Linda Zhang Weihong Zhang +4 位作者 Mengyu Li Pan Li Xiaoyang Zheng Chun Chang Weihua Zou 《Waste Disposal and Sustainable Energy》 2022年第4期271-282,共12页
Coal fly ash(CFA)is the main combustion residue of fine ground coal in the process of coal-fired thermal power generation,and crude glycerol(CG)is the byproduct of biodiesel production.The novel polyurethane/CFA(PU/CF... Coal fly ash(CFA)is the main combustion residue of fine ground coal in the process of coal-fired thermal power generation,and crude glycerol(CG)is the byproduct of biodiesel production.The novel polyurethane/CFA(PU/CFA)foam composites were prepared from CFA and CG.Two kinds of CFA,CFAI and CFAII were used as fillers for the property enhancement of PU/CFA composites,and the effects on foaming behavior and the reinforcement for the PU/CFA composites were investigated.It was found that the addition of CFA can prolong the rising time and tack-free time,and the maximum rising time and tack-free time increased to 40 s and 42 s.Meanwhile,the maximum compressive strength of PU/CFAI and PU/CFAII increased to 0.2186 MPa and 0.2284 MPa with the addition of CFA.The thermogravimetric analysis showed that the PU/CFA composites underwent three stages of thermal decomposition,and the amount of carbon residue increased from 23.11%to 67.91%with increasing CFA dosage.Moreover,the values of the limit oxygen index increased from 21.5%to 23.7%with the incorporation of CFA into the PU foam matrix,indicating that CFA improved the thermal stability and flame retardant performance of the composites.This study provided a new method for the recycling and high-value utilization of CG and CFA. 展开更多
关键词 Coal fly ash Crude glycerol Polyurethane foam resource and recycling of waste
原文传递
Algal biomass derived biochar anode for efficient extracellular electron uptake from Shewanella oneidensis MR-1 被引量:1
6
作者 Yan-ShanWang Dao-Bo Li +2 位作者 Feng Zhang Zhong-Hua Tong Han-Qing Yu 《Frontiers of Environmental Science & Engineering》 SCIE EI CAS CSCD 2018年第4期109-117,共9页
The development of cost-effective and highly efficient anode materials Ibr extracellular electron uptake is important to improve the electricity generation ofbioelectrochemical systems. An effective approach to mitiga... The development of cost-effective and highly efficient anode materials Ibr extracellular electron uptake is important to improve the electricity generation ofbioelectrochemical systems. An effective approach to mitigate harmful algal bloom (HAB) is mechanical harvesting of algal biomass, thus subsequent processing for the collected algal biomass is desired. In this study, a low-cost biochar derived from algal biomass via pyrolysis was utilized as an anode material tbr efficient electron uptake. Electrochemical properties of the algal biochar and graphite plate electrodes were characterized in a bioelectrochemical system (BES). Compared with graphite plate electrode, the algal biochar electrode could effectively utilize both indirect and direct electron transfer pathways tbr current production, and showed stronger electrochemical response and better adsorption of redox mediators. The maximum current density of algal biochar anode was about 4.1 times higher than graphite plate anode in BES. This work provides an application potential for collected HAB to develop a cost-effective anode material for eff-cient extracellular electron uptake in BES and to achieve waste resource utilization. 展开更多
关键词 Algal biochar Anode material Electrochemical activity Extracellular electron transport waste resource utilization
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部