农业原料机械、化学和热预处理的组合提高了高级厌氧消化的生物甲烷产量

IF 3.1 3区 工程技术 Q3 ENERGY & FUELS
Nichola Austen, Helen Theaker, Nicholas A. Tenci, Alan Beesley, Ian P. Thompson
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引用次数: 0

摘要

与未经预处理的原料相比,原料的多步骤高级厌氧消化(AAD)预处理提高了沼气产量,是处理顽固木质纤维素原料使商业沼气生产更具经济可行性的关键。在这里,我们提出了几种低能源和环保的预处理商业相关的木质纤维素原料(黑麦和玉米),以增加生物甲烷的产量。在本研究中,研究了55°C和80°C两种热处理,添加生物有机催化剂(BOC)以及通过空化作用机械减小粒径的影响。对于两种原料,热预处理均显著提高了溶解度和沼气产率(8.6-136.6%),其中玉米对55℃温度的响应较好(提高136.6%),黑麦对80℃温度的响应较好(提高62%)。添加BOC能提高黑麦产量(14%),降低玉米产量(4%);空化能提高黑麦生化甲烷势(BMP)(38.7%),抑制玉米产量(10.6%)。这项多工艺研究的结果表明,低能量预处理对木质纤维素材料的有效性,可以应用于现有的AD植物。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A Combination of Mechanical, Chemical, and Thermal Pretreatments of Agricultural Feedstocks Enhances Biomethane Yields in Advanced Anaerobic Digestion

Multi-step advanced anaerobic digestion (AAD) pretreatment of feedstocks increases biogas yields compared to non-pretreated feedstocks, and is key to the processing of recalcitrant lignocellulosic feedstock to make commercial biogas production more economically viable. Here, we present several low energy and eco-friendly pretreatments to commercially relevant lignocellulosic feedstocks (rye and maize), to increase biomethane yields. In this study, the impact of two heating treatments, 55 °C and at 80 °C, the addition of a bio-organic catalyst (BOC), and mechanical particle size reduction by cavitation were investigated. For both feedstocks, thermal pretreatment significantly increased both solubility and enhanced biogas yield (8.6–136.6%), with maize responding better to a temperature of 55 °C (136.6% increase) and rye to 80 °C (62% increase). The BOC addition enhanced the rye yield (14%) but decreased from maize (4%), and cavitation enhanced the biochemical methane potential (BMP) of rye (38.7%) but had an inhibitory effect on maize (10.6%). The results of this multi-process study demonstrate the efficacy of low energy pretreatments for lignocellulosic material that can be applied to existing AD plants.

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来源期刊
BioEnergy Research
BioEnergy Research ENERGY & FUELS-ENVIRONMENTAL SCIENCES
CiteScore
6.70
自引率
8.30%
发文量
174
审稿时长
3 months
期刊介绍: BioEnergy Research fills a void in the rapidly growing area of feedstock biology research related to biomass, biofuels, and bioenergy. The journal publishes a wide range of articles, including peer-reviewed scientific research, reviews, perspectives and commentary, industry news, and government policy updates. Its coverage brings together a uniquely broad combination of disciplines with a common focus on feedstock biology and science, related to biomass, biofeedstock, and bioenergy production.
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