Operational process stability in pilot dry anaerobic digester of source-sorted organic fraction municipal solid waste

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-01-16 DOI:10.1002/apj.3030

Afifi Zainal, Razif Harun, Liyana Yahya, Syazwani Idrus

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Abstract

The organic fraction of municipal solid waste (OFMSW) is a major portion of solid waste in Malaysia, with 44.5% of the total waste being food waste-derived sources. This study investigates the performance of dry anaerobic digester (DAD) operation using the pilot dry anaerobic digester (PDAD), a plug flow reactor, in treating source-sorted organic fraction municipal solid waste (SS-OFMSW) for biogas production. A commercial Malaysian food waste (CMFW) sample has been used to represent SS-OFMSW. The anaerobic digestion was performed in a semi-continuous operation using a 15 m³ PDAD with organic loading rates (OLRs) ranging from .63 to 5.46 kg volatile solid (VS)/m³·day under mesophilic conditions. The maximum methane composition was achieved at 56.0% at OLR 5.17 kg VS/m³·day with specific methane production (SMP) of .57 m³·CH₄/kg VS_fed and gas production rate (GPR) 5.27 m³·gas/m³·digester·day. As indicated by a pH and alkalinity ratio, the PDAD system was stable ranging from pH 6.7 to 8.3, alkalinity ratio of .3 with an inclination of total ammonia nitrogen (TAN) up to 1056 mg/L. The SMP achieved is between 1.58 and .4 m³·CH₄/kg VS_fed and potentially to fuelled 475 MW commercial biogas plant fed by CMFW. The DAD deployment strengthened the circular economy and decarbonization initiatives.

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城市固体废弃物源头分拣有机组分干式厌氧消化器试点运行过程的稳定性

在马来西亚，城市固体废弃物（OFMSW）中的有机部分是固体废弃物的主要组成部分，其中 44.5% 来自食物垃圾。本研究调查了干式厌氧消化器（DAD）在处理源头分拣的有机部分城市固体废物（SS-OFMSW）以生产沼气时的运行情况，干式厌氧消化器（PDAD）是一种塞流反应器。马来西亚的商业厨余（CMFW）样本被用来代表 SS-OFMSW。在中嗜酸条件下，使用 15 立方米的 PDAD 进行半连续厌氧消化，有机负荷率 (OLR) 为 0.63 至 5.46 千克挥发性固体 (VS)/立方米-天。当 OLR 为 5.17 千克 VS/m3 天时，甲烷成分达到最大值 56.0%，甲烷产量（SMP）为 0.57 立方米-CH4/千克 VSfed，产气率（GPR）为 5.27 立方米-气体/立方米-消化池-天。根据 pH 值和碱度比，PDAD 系统的 pH 值在 6.7 至 8.3 之间，碱度比为 0.3，总氨氮（TAN）最高达 1056 mg/L。实现的 SMP 在 1.58 至 0.4 立方米-CH4/千克 VSfed 之间，有可能为由 CMFW 供料的 475 兆瓦商用沼气厂提供燃料。DAD 的部署加强了循环经济和去碳化倡议。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.