气候变化领域集成服务门户(CCPortal): Management of Cheese Whey Wastewater and Greywater for Dual Biogas and Biochar Production: A Techno-Economic and Sustainable Approach

CCPortal

DOI	10.1007/s12649-024-02458-8
	Management of Cheese Whey Wastewater and Greywater for Dual Biogas and Biochar Production: A Techno-Economic and Sustainable Approach
	Tugume, Moses; Ibrahim, Mona G.; Fujii, Manabu; Nasr, Mahmoud
发表日期	2024
ISSN	1877-2641
EISSN	1877-265X
英文摘要	While several studies have implemented the anaerobic digestion of cheese whey wastewater (CWW) to generate biogas, there is still a research gap in finding appropriate techniques to prevent medium acidification and avoid secondary pollution from digestate sludge disposal. Hence, this study represented (i) the synergetic effect of greywater (GW) with CWW to alleviate the medium inhibition causes and (ii) the recycling of anaerobic digestate to prepare biochar. The CWW/GW fraction of 25/75 (v/v) showed the best co-digestion performance, where about 43.10 +/- 2.27% of initial chemical oxygen demand (CODinitial) was converted to bio-CH4. The co-digestion of CWW with GW could mitigate the inhibition impacts caused by volatile fatty acids (VFAs) accumulation and provide a balanced C/N ratio, supporting the methanogenic growth patterns. The pyrolysis of digestate sludge showed a promising route to generate biochar, having high carbon content, multiple surface functional groups, and a large specific surface area. The obtained bio-CH4 recovery (150.86 +/- 7.64 mL/g COD) and biochar yield (0.65 +/- 0.05 g/g dry sludge) were used to determine the economic feasibility of an integrated anaerobic co-digestion/pyrolysis project at a CWW/GW discharge of 50 m3/d (792.5 kg COD/d). The profits related to biogas, biochar, carbon credit, and pollution reduction could reach up to 49,976 USD/year, with a net profit of 26,111 USD/year. The cash-flow depicted that the proposed CWW/GW management system could recover the initial investment in an 8.97-year payback period. The study demonstrated that the CWW/GW co-digestion/pyrolysis pathway could fulfill several SDGs related to pollution reduction, climate change mitigation, and economic growth development.
英文关键词	Biochar yield; Biomethane recovery; CWW/GW co-digestion; Digestate recyclability; Economic feasibility
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences
WOS记录号	WOS:001187432000001
来源期刊	WASTE AND BIOMASS VALORIZATION
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/302718
作者单位	Egyptian Knowledge Bank (EKB); Egypt-Japan University of Science & Technology; Egyptian Knowledge Bank (EKB); Alexandria University; Tokyo Institute of Technology; Egyptian Knowledge Bank (EKB); Alexandria University
推荐引用方式 GB/T 7714	Tugume, Moses,Ibrahim, Mona G.,Fujii, Manabu,et al. Management of Cheese Whey Wastewater and Greywater for Dual Biogas and Biochar Production: A Techno-Economic and Sustainable Approach[J],2024.
APA	Tugume, Moses,Ibrahim, Mona G.,Fujii, Manabu,&Nasr, Mahmoud.(2024).Management of Cheese Whey Wastewater and Greywater for Dual Biogas and Biochar Production: A Techno-Economic and Sustainable Approach.WASTE AND BIOMASS VALORIZATION.
MLA	Tugume, Moses,et al."Management of Cheese Whey Wastewater and Greywater for Dual Biogas and Biochar Production: A Techno-Economic and Sustainable Approach".WASTE AND BIOMASS VALORIZATION (2024).