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Preparation of Lignin Based Anion Exchanger for Nitrate and Phosphate Removal

Paper And Biomaterials 2016年第1期1卷 22-30页

作者： Fan Zhai Zhen Wang Yu Liu key laboratory of Pulp & Paper Science and Technology Ministry of EducationQilu University of Technology key laboratory of cleaner production and industrial waste recycling and resourcization Ministry of EducationQilu University of Technology

Tertiary amino alkali lignin( TA-AL) was successfully synthesized by a two-step approach; its application as an adsorbent for nitrate and phosphate ions in effluents was investigated. TA-AL was characterized by FT-IR,zeta potential,SEM,and elemental analysis. Kinetic and equilibrium adsorption isotherms were determined to investigate the adsorption capacity of TAAL. The results revealed that TA-AL had a very strong adsorption capacity towards anions; the value of p HPZC( PZC,point of zero charge) was about 9. *** adsorption of nitrate and phosphate ions was related to effluent p H and initial anion concentration. The maximum absorption of nitrate and phosphate ions was about 26. 9 and 18. 4 mg / g when the initial concentration of the ions was 50 mg / L. The adsorption kinetics conformed to the pseudo-second-order kinetic equation,and the equilibrium data were suitably expressed by the Freundlich model. The regeneration studies confirmed that the lignin-based material was a promising adsorbent for nitrate and phosphate ions in water.

关键词： aminated alkali lignin phosphate nitrate adsorption

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Development of a new cleaner production process for cassava ethanol

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Chinese Journal of Chemical Engineering 2017年第4期25卷 493-498页

作者： Ke Wang Xinchao Yang Xidong Ren Jianhua Zhang Zhonggui Mao The key laboratory of industrial Biotechnology Ministry of EducationSchool ofBiotechnologyJiangnan UniversityWuxi 214122China

A new cleaner production process for cassava ethanol has been developed, in which the thin stillage by-product was treated initially by anaerobic digestion, and the digestate further processed by hydrogen-form cation exchange resin before being recycled as process water to make mash for the next ethanol fermentation *** wastewater was eliminated and freshwater and energy consumption was significantly reduced. To evaluate the new process, ten consecutive batches of ethanol fermentation and anaerobic digestion at lab scale were carried out. Average ethanol production in the recycling batches was 11.43%(v/v) which was similar to the first batch, where deionized(DI) water was used as process water. The chemical oxygen demand(COD) removal rate reached 98% and the methane yield was 322 ml per gram of COD removed, suggesting an efficient and stable operation of the anaerobic digestion. In conclusion, the application of the new process can contribute to sustainable development of the cassava ethanol industry.

关键词： anaerobic fermentation digestion resin ethanol batch eliminated processed wastewater removed

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Review on Pond Aquaculture Tail Water Treatment Technologies

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Agricultural Biotechnology 2022年第2期11卷 93-98页

作者： Shunlong MENG Lihua REN Xi CHEN Liping QIU Chao SONG Limin FAN Dandan LI Jiazhang CHEN Pao XU key laboratory of Freshwater Fisheries and Germplasm Resources Utilization Ministry of Agriculture and Rural AffairsFreshwater Fisheries Research CenterChinese Academy of Fishery SciencesWuxi 214081China Kunshan Yangcheng Lake Crab industrial Research Institute Suzhou 215300China

Carrying out the treatment of aquaculture tail water and realizing the discharge and recycling of the aquaculture tail water are the inevitable trend in the development of the fishery industry at present and in the *** this reason,this paper reviewed the characteristics of pond aquaculture tail water,the sources of pollutants in intensive aquaculture tail water,the important parameters in the water body that affect the growth of cultured organisms,and the water treatment methods in the process of aquaculture,and prospected from the technical level and industrial policy level,hoping to accumulate data for promoting the green development of aquaculture and cleaner production.

关键词： Pond aquaculture Tail water treatment Pollutant Parameter

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