标题: Landfill leachate detoxification and decoloration for energy reclamation via microalgae-bacteria synergy

作者: Chang, HX (Chang, Haixing); Tan, L (Tan, Ling); Feng, HW (Feng, Haowen); Zhu, LD (Zhu, Liandong); Ren, NQ (Ren, Nanqi); Ho, SH (Ho, Shih-Hsin)

来源出版物: CHEMICAL ENGINEERING JOURNAL 卷: 500 文献号: 157011 DOI: 10.1016/j.cej.2024.157011 Early Access Date: OCT 2024 Published Date: 2024 NOV 15

摘要: Upcycling of hidden energy and resources from landfill leachate (LL) into short-chains fatty acids (SCFAs) represents a substantially unexploited opportunity to handle environmental issue and achieve a circular economy. Due to high biotoxicity and poor biodegradability, efficient conversion of LL into SCFAs remains a great challenge. Herein, a hybrid electro-biosystem that coupling spatially separate LL electrochlorination, photoremediation and dark fermentation was constructed to realize LL toxicity alleviation, resource recovery and SCFAs production in cascade. During LL electrochlorination, macromolecular organics evolution and LL toxicity alleviation mechanisms were revealed, in which available Cl- concentration played key role on LL properties amendment. During microalgae photo-remediation, resources recovery efficiency demonstrates that suitable LL electrochlorination can enhance microalgal photosynthesis and stimulate intracellular energy accumulation. Finally, SCFAs were produced from microalgae biomass via dark fermentation with butyric acid and acetic acid as major products, outputting total energy of 4.38 kJ/L. The work provides a paradigm shift of low-cost LL disposal with extra benefit of SCFAs production.

作者关键词: Landfill leachate; Electrochlorination; Short-chains fatty acids; Microalgae; Dark fermentation

KeyWords Plus: ELECTROCHEMICAL OXIDATION; AMMONIA; MECHANISM

地址: [Chang, Haixing; Zhu, Liandong] Wuhan Univ, Sch Resources & Environm Sci, Hubei Key Lab Biomass Resources Chem & Environm Bi, Wuhan 430079, Peoples R China.

[Ren, Nanqi; Ho, Shih-Hsin] Harbin Inst Technol, State Key Lab Urban Water Resource & Environm, Harbin 150090, Peoples R China.

[Feng, Haowen] Chongqing Dazu Dist Ctr Dis Control & Prevent, Chongqing 402360, Peoples R China.

[Tan, Ling] Guangdong Technion Israel Inst Technol, Environm Sci & Engn Program, 241 Daxue Rd, Shantou 515063, Guangdong, Peoples R China.

通讯作者地址: Chang, HX (通讯作者)，Wuhan Univ, Sch Resources & Environm Sci, Hubei Key Lab Biomass Resources Chem & Environm Bi, Wuhan 430079, Peoples R China.

Ho, SH (通讯作者)，Harbin Inst Technol, State Key Lab Urban Water Resource & Environm, Harbin 150090, Peoples R China.

电子邮件地址: changhx@whu.edu.cn; stephen6949@hit.edu.cn

影响因子：13.4