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A novel approach to enhance high optically active L-lactate production from food waste by landfill leachate.
Zhang, Wenjuan; Shi, Jiaxin; Li, Yue; Ma, Yonghong; Khanzada, Aisha Khan; Al-Hazmi, Hussein E; Xu, Xianbao; Li, Xiang; Hassan, Gamal Kamel; Xue, Gang; Makinia, Jacek.
Afiliación
  • Zhang W; Shanghai University of Engineering Science, School of Chemistry and Chemical Engineering, Shanghai, 201620, China.
  • Shi J; Shanghai University of Engineering Science, School of Chemistry and Chemical Engineering, Shanghai, 201620, China.
  • Li Y; Shanghai University of Engineering Science, School of Chemistry and Chemical Engineering, Shanghai, 201620, China.
  • Ma Y; State Environmental Protection Engineering Centre for Pollution Treatment and Control in Textile Industry, College of Environmental Science and Engineering, Donghua University, 2999 North Renmin Road, Shanghai, 201620, China.
  • Khanzada AK; Eko-Tech Center, Gdansk University of Technology, ul. Narutowicza 11/12, 80-233 Gdansk, Poland; Faculty of Civil and Environmental Engineering, Gdansk University of Technology, ul. Narutowicza 11/12, 80-233, Gdansk, Poland.
  • Al-Hazmi HE; Eko-Tech Center, Gdansk University of Technology, ul. Narutowicza 11/12, 80-233 Gdansk, Poland; Faculty of Civil and Environmental Engineering, Gdansk University of Technology, ul. Narutowicza 11/12, 80-233, Gdansk, Poland; BioCo Research Group, Department of Green Chemistry and Technology, Ghent Un
  • Xu X; Eko-Tech Center, Gdansk University of Technology, ul. Narutowicza 11/12, 80-233 Gdansk, Poland; Faculty of Civil and Environmental Engineering, Gdansk University of Technology, ul. Narutowicza 11/12, 80-233, Gdansk, Poland. Electronic address: 18621035295@163.com.
  • Li X; State Environmental Protection Engineering Centre for Pollution Treatment and Control in Textile Industry, College of Environmental Science and Engineering, Donghua University, 2999 North Renmin Road, Shanghai, 201620, China. Electronic address: lix@dhu.edu.cn.
  • Hassan GK; Water Pollution Research Department, National Research Centre, 33El-Bohouth St. (Former El-Tahrir St.), Dokki, P.O. 12622, Giza, Egypt.
  • Xue G; State Environmental Protection Engineering Centre for Pollution Treatment and Control in Textile Industry, College of Environmental Science and Engineering, Donghua University, 2999 North Renmin Road, Shanghai, 201620, China.
  • Makinia J; Eko-Tech Center, Gdansk University of Technology, ul. Narutowicza 11/12, 80-233 Gdansk, Poland; Faculty of Civil and Environmental Engineering, Gdansk University of Technology, ul. Narutowicza 11/12, 80-233, Gdansk, Poland.
J Environ Manage ; 370: 122497, 2024 Sep 14.
Article en En | MEDLINE | ID: mdl-39278020
ABSTRACT
The recycling of food waste (FW) through anaerobic fermentation into lactic acid (LA), with two isomers L-LA and D-LA, aligns with the principles of a bio-based circular economy. However, FW fermentation is often limited by competing pathways, acidification inhibition, and trace metals deficiency. This study investigates the introduction of landfill leachate, containing buffering agents (ammonia) and trace metals, into FW fermentation. Various dosages of landfill leachate, ranging from 90 (LN-90) to 450 mg/L (LN-450) based on inclusive ammonia calculation, were employed. Results showed that LA production peaked at 43.65 ± 0.57 g COD/L in LN-180 on day 6, with a high optical activity of L-LA at 92.40 ± 1.15 %. Fermentation pathway analysis revealed that landfill leachate amendment enhances hydrolysis (as evidenced by increased activity of amylase, α-glucosidase, and protease) and glycolysis (resulting in enhanced utilization of carbohydrates and glucose). The inclusive ammonia in leachate plays a crucial role as a buffer, maintaining optimal pH conditions (5-7), thereby reducing volatile fatty acid production and thus intensifying LA orientations. The increased activity of L-lactate dehydrogenase (L-LA generation) and decreased NAD-independent lactate dehydrogenase (LA consumption) in properly dosed leachate further explained the high accumulation of L-LA. Dominance of lactic acid bacteria, including Streptococcus, Enterococcus, Klebsiella, Bifidobacterium, Bavariicoccus, and Lacticaseibacillus, accounted for 91.08% (LN-90), while inhibitory effects were observed in LN-450 (4.45%). Functional gene analysis further supported the enhanced glycolysis, L-lactate dehydrogenase, and nitrogen assimilation. Finally, a network analysis indicates a beneficial effect on the genus Enterococcus and Klebsiella by landfill leachate addition. This study demonstrates the efficiency of utilizing landfill leachate to enhance LA recycling from FW fermentation, aligning with the concept of circular economy by transforming waste into valuable resources.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: J Environ Manage Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Reino Unido
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: J Environ Manage Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Reino Unido