Use of biochars in anaerobic digestion

被引：280

作者：

Mumme, Jan ^{[1
]}

Srocke, Franziska ^{[2
]}

Heeg, Kathrin ^{[1
]}

Werner, Maja ^{[1
]}

机构：

[1] Leibniz Inst Agr Engn Potsdam Bornim, APECS Grp, D-14469 Potsdam, Germany

[2] McGill Univ, Dept Plant Sci, Ste Anne De Bellevue, PQ H9X 3V9, Canada

来源：

BIORESOURCE TECHNOLOGY | 2014年 / 164卷

关键词：

Anaerobic digestion; Biochar; Ammonia inhibition; Degradation kinetics; Methanogenic microflora; AMMONIA INHIBITION; BIOGAS PRODUCTION; CATTLE DUNG; ZEOLITE; COMMUNITIES; BIOMASS; WASTE;

D O I：

10.1016/j.biortech.2014.05.008

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

This study investigated the behavior of biochars from pyrolysis (pyrochar) and hydrothermal carbonization (hydrochar) in anaerobic digestion regarding their degradability and their effects on biogas production and ammonia inhibition. A batch fermentation experiment (42 degrees C, 63 days) was conducted in 100 mL syringes filled with 30 g inoculum, 2 g biochar and four levels of total ammonium nitrogen (TAN). For pyrochar, no clear effect on biogas production was observed, whereas hydrochar increased the methane yield by 32%. This correlates with the hydrochar's larger fraction of anaerobically degradable carbon (10.4% of total carbon, pyrochar: 0.6%). Kinetic and microbiota analyses revealed that pyrochar can prevent mild ammonia inhibition (2.1 g TAN kg (1)). Stronger inhibitions (3.1-6.6 g TAN kg (1)) were not mitigated, neither by pyrochar nor by hydrochar. Future research should pay attention to biochar-microbe interactions and the effects in continuously-fed anaerobic digesters. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：189 / 197

页数：9

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