期刊
JOURNAL OF ENVIRONMENTAL MANAGEMENT
卷 249, 期 -, 页码 -出版社
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jenvman.2019.109397
关键词
Anaerobic digestion; Methane potential; Organic wastes; Optimization; Thermal-alkali pre-treatment
资金
- Korea Institute of Energy Technology Evaluation and Planning (KETEP)
- Ministry of Trade, Industry & Energy (MOTIE) of the Republic of Korea [20172020108940]
- Korea Evaluation Institute of Industrial Technology (KEIT) [20172020108940] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
In this study, the optimum conditions of thermal-alkali pre-treatment and the performance of ammonia stripping were investigated for improving solubilization efficiency and methane yield in the anaerobic co-digestion of food waste (FW) and sewage sludge (SS). The reaction temperature, NaOH concentration and reaction time for the thermal-alkali pre-treatment were investigated to determine optimum pre-treatment conditions. Solubilization rate, volatile suspended solids (VSS) reduction rate and total volatile fatty acid (VFAs) yields were improved with increasing reaction temperature, NaOH concentration and reaction time. In addition, by applying the optimum pre-treatment conditions (140 degrees C, 60 meq/L and 60 min), the experimental methane yield of thermalalkali pre-treatment of a mixture of FW and SS was 483.0 +/- 15.7 mL CH4/g VSadded, which was about 84% higher than that of the untreated one. However, after thermal-alkali pre-treatment, the NH4+ concentration of the thermal-alkali pre-treatment liquid showed a concentration that could inhibit anaerobic digestion, so ammonia stripping was performed to remove NH4+. As a result, the experimental methane yield was increased by about 7% compared to when ammonia stripping was not performed.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据