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首页> 外文期刊>Waste and biomass valorization >Two-Step Pretreatment of Hydrothermal with Ammonia for Cow Bedding: Pretreatment Characteristics, Anaerobic Digestion Performance and Kinetic Analysis
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Two-Step Pretreatment of Hydrothermal with Ammonia for Cow Bedding: Pretreatment Characteristics, Anaerobic Digestion Performance and Kinetic Analysis

机译：牛床上用水的两步预处理水热量：预处理特征，厌氧消化性能和动力学分析

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摘要

Cow bedding is one of the dominant livestock wastes among agricultural waste in China. The bedding is a good raw material for anaerobic digestion (AD) and produces biogas of sustainable energy. To improve the AD performance of bedding, a two-step pretreatment of hydrothermal with ammonia (TPHA) was used at 100, 150, and 200 degrees C holding for 5-30 min. The results revealed that the highest volatile fatty acids concentration was 4720.1 mg/L at a TPHA of 200 degrees C for 5 min. The highest removal rates of cellulose and hemicellulose were 35.4% and 97.4% at a hydrothermal pretreatment (HP) of 100 degrees C for 30 min and 200 degrees C for 10 min, respectively. The highest methane yield of cow bedding was 169.1 mL/g VS using the TPHA at 150 degrees C for 10 min, which was 54.5% higher than that of the untreated group. Kinetic analysis showed that the modified Gompertz model was more suitable for TPHA for cow bedding. Therefore, TPHA could improve pretreatment characteristics and enhance the methane yield of cow bedding.[GRAPHICS]
机译：牛床上用品是中国农业垃圾中的主要牲畜废物之一。床上用品是厌氧消化（广告）的良好原料，生产可持续能量的沼气。为了提高床上用品的广告性能，使用氨（TPHA）的两步预处理在100,150和200摄氏度下持续5-30分钟。结果表明，最高挥发性脂肪酸浓度为4720.1mg / L，在200℃的TPHA下为5分钟。纤维素和半纤维素的最高去除率为35.4％和97.4％，在100℃的水热预处理（HP），30分钟，共200℃，10分钟。牛床上用品的最高甲烷产率为169.1ml / g，使用150℃的TPHA 10分钟，比未处理基团高54.5％。动力学分析表明，改良的Gompertz模型更适合于TPHA用于牛寝具。因此，TPHA可以改善预处理特征，提高牛床上用品的甲烷产量。[图形]

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