Economic and environmental analysis: Straw biogas project operating at full load with dry yellow corn straw

IF 9.7 1区环境科学与生态学 Q1 AGRICULTURAL ENGINEERING

Bioresource Technology Pub Date : 2025-03-03 DOI:10.1016/j.biortech.2025.132335

Xiaotian Chen , Wei Fu , Kai Hu , Guofeng Yin , Song Liu , Na Zhu , Yehua Zhao , Zongjun Cui , Xufeng Yuan

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Abstract

Due to the unique straw raw materials in China, the current straw biogas project based on the “two-stage” process of wet anaerobic digestion still has problems such as deficient technology, low production capacity, and weak profitability. In this study, we improved the original process for the biogas project, aiming at increasing biogas yield and profit. The results show that the new process (NP) can effectively recover the “carbon” by anaerobic hydrolysis, solve the problems of scum and crust, and significantly improve the biomethane yield (141.3%-321.8%), net profit ($599,667-$772,004/year), and carbon emission reduction equivalent (2.7×10⁷-4.6×10⁷ kg CO₂e/year). Based on the amount of dry yellow corn straw that can be collected annually for energy-oriented production, NP’s potential economic and environmental value is estimated to be significant. This study provides reliable technical support for efficient utilization of agricultural resources and circular economy.

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来源期刊

Bioresource Technology 工程技术-能源与燃料

CiteScore

20.80

自引率

19.30%

发文量

2013

审稿时长

12 days

期刊介绍： Bioresource Technology publishes original articles, review articles, case studies, and short communications covering the fundamentals, applications, and management of bioresource technology. The journal seeks to advance and disseminate knowledge across various areas related to biomass, biological waste treatment, bioenergy, biotransformations, bioresource systems analysis, and associated conversion or production technologies. Topics include: • Biofuels: liquid and gaseous biofuels production, modeling and economics • Bioprocesses and bioproducts: biocatalysis and fermentations • Biomass and feedstocks utilization: bioconversion of agro-industrial residues • Environmental protection: biological waste treatment • Thermochemical conversion of biomass: combustion, pyrolysis, gasification, catalysis.