Porous hollow microspheres based on industrial solid waste enhance biomethane recovery from corn straw.

Autor: Chen X; College of Agronomy/Center of Biomass Engineering, China Agricultural University, Beijing 100193, China., Zang C; College of Agronomy/Center of Biomass Engineering, China Agricultural University, Beijing 100193, China., Xie Y; College of Agronomy/Center of Biomass Engineering, China Agricultural University, Beijing 100193, China., Wang K; Beijing Huaqi Eco-Tech Co., LTD, Beijing 102200, China., Li Y; Beijing Huaqi Eco-Tech Co., LTD, Beijing 102200, China., Lv R; Beijing Huaqi Eco-Tech Co., LTD, Beijing 102200, China., Wen B; Laboratory of Biomanufacturing and Food Engineering, Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing 100193, China. Electronic address: botingw@126.com., Cui Z; College of Agronomy/Center of Biomass Engineering, China Agricultural University, Beijing 100193, China., Yuan X; College of Agronomy/Center of Biomass Engineering, China Agricultural University, Beijing 100193, China. Electronic address: ayuanxf@cau.edu.cn.
Jazyk: angličtina
Zdroj: Bioresource technology [Bioresour Technol] 2024 Nov; Vol. 412, pp. 131395. Date of Electronic Publication: 2024 Aug 30.
DOI: 10.1016/j.biortech.2024.131395
Abstrakt: The increasing production of industrial solid waste requires better disposal solutions. Porous hollow microspheres (PHM) are small inorganic materials with high surface area and adsorption capacity, but their potential for use in anaerobic digestion (AD) has not been explored. With PHM as additive, the effects of different industrial solid wastes (waste glass, steel slag, and fly ash) with different loadings (2 %-8 %), respectively, on the AD of corn straw were investigated in this study. The results showed that PHM could supplement trace elements and promote biofilm formation, which effectively shortened the lag period (25.00-60.87 %) and increased the methane yield (4.75 %-16.28 %). The 2 % PHM loading based on steel slag gave the highest methane yield (300.16 NmL/g VS add ). Microbial and PICRUSt2 analyses indicated that PHM enriched hydrolytic and acidogenic bacteria, increased the abundance of methanogenesis-related enzyme genes. This study provides a theoretical basis for the comprehensive utilization of coupled industrial and agricultural wastes.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2024 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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