Effect of biochar on anaerobic co-digestion performance of cellulosic ethanol refinery waste liquor with swine manure

IF 6.3 2区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of water process engineering Pub Date : 2024-11-22 DOI:10.1016/j.jwpe.2024.106574

Haoran Li , Sunqiang Xu , Yingyan Liang, Can Fu, Yongxin Pang, Zhantian Tang, Guican Bi, Jun Xie

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Abstract

Recently, the high investment in the treatment of waste liquor and residue has become an important issue in the cellulosic ethanol refining industry. This study investigated the biogas production performance of anaerobic digestion (AD) by mixing different proportions of waste liquor (WL) with swine manure (SM). Additionally, the effect of biochar derived from waste residue (WR) pyrolyzed at different temperatures in the AD system was examined. The results indicated that: (1) when refinery WL and SM were mixed at 75:25 (on a basis of g sCOD: g VS), the cumulative methane yield (CMY) reached 225.48 ± 20.63 mL/g VS, demonstrating a synergistic effect of 1.14; (2) biochar prepared at lower pyrolysis temperature was more effective than that prepared at higher temperatures, with BC400 exhibiting remarkable promoting effects. The CMY with BC400 was 255.67 mL/g VS, 15.25 % higher than the control group; (3) the promoting effect of BC400 in the AD system was attributed to the biochar's porous structure and oxygen-containing functional groups, which enriched the hydrolytic, acid-producing, and methanogenic bacterial communities, enhancing direct interspecies electron transfer (DIET) efficiency. The addition of biochar accelerated the AD process and improved methane production efficiency. This research offered reference for the recycling and treatment of cellulosic ethanol refinery waste.

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生物炭对纤维素乙醇精炼废液与猪粪厌氧共消化性能的影响

近来，处理废液和废渣的高投资已成为纤维素乙醇提炼行业的一个重要问题。本研究通过将不同比例的废液（WL）与猪粪（SM）混合，研究了厌氧消化（AD）的沼气生产性能。此外，还研究了在厌氧消化（AD）系统中不同温度下热解废渣（WR）产生的生物炭的效果。结果表明(1) 当炼油厂 WL 和 SM 以 75:25 的比例混合时（以 g sCOD: g VS 为基础），累积甲烷产量（CMY）达到 225.48 ± 20.63 mL/g VS，显示出 1.14 的协同效应；(2) 在较低热解温度下制备的生物炭比在较高温度下制备的生物炭更有效，其中 BC400 表现出显著的促进作用。加入 BC400 的 CMY 为 255.67 mL/g VS，比对照组高 15.25%；(3) BC400 在厌氧消化（AD）系统中的促进作用归因于生物炭的多孔结构和含氧官能团，它们丰富了水解、产酸和产甲烷细菌群落，提高了种间直接电子传递（DIET）效率。生物炭的加入加速了厌氧消化（AD）过程，提高了甲烷生产效率。这项研究为纤维素乙醇提炼废料的回收和处理提供了参考。

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来源期刊

Journal of water process engineering Biochemistry, Genetics and Molecular Biology-Biotechnology

CiteScore

10.70

自引率

8.60%

发文量

846

审稿时长

24 days

期刊介绍： The Journal of Water Process Engineering aims to publish refereed, high-quality research papers with significant novelty and impact in all areas of the engineering of water and wastewater processing . Papers on advanced and novel treatment processes and technologies are particularly welcome. The Journal considers papers in areas such as nanotechnology and biotechnology applications in water, novel oxidation and separation processes, membrane processes (except those for desalination) , catalytic processes for the removal of water contaminants, sustainable processes, water reuse and recycling, water use and wastewater minimization, integrated/hybrid technology, process modeling of water treatment and novel treatment processes. Submissions on the subject of adsorbents, including standard measurements of adsorption kinetics and equilibrium will only be considered if there is a genuine case for novelty and contribution, for example highly novel, sustainable adsorbents and their use: papers on activated carbon-type materials derived from natural matter, or surfactant-modified clays and related minerals, would not fulfil this criterion. The Journal particularly welcomes contributions involving environmentally, economically and socially sustainable technology for water treatment, including those which are energy-efficient, with minimal or no chemical consumption, and capable of water recycling and reuse that minimizes the direct disposal of wastewater to the aquatic environment. Papers that describe novel ideas for solving issues related to water quality and availability are also welcome, as are those that show the transfer of techniques from other disciplines. The Journal will consider papers dealing with processes for various water matrices including drinking water (except desalination), domestic, urban and industrial wastewaters, in addition to their residues. It is expected that the journal will be of particular relevance to chemical and process engineers working in the field. The Journal welcomes Full Text papers, Short Communications, State-of-the-Art Reviews and Letters to Editors and Case Studies