Carbon balance analysis of sewage sludge biochar-to-soil system
文献类型：期刊论文
| 作者 | Sun, Hao; Luo, Lei ; Wang, Dan; Liu, Weina; Lan, Yushun; Yang, Tianxue; Gai, Chao; Liu, Zhengang
|
| 刊名 | JOURNAL OF CLEANER PRODUCTION
 |
| 出版日期 | 2022-07-15 |
| 卷号 | 358期号:0页码:132057 |
| 关键词 | GREENHOUSE-GAS EMISSIONS LIFE-CYCLE ASSESSMENT ENERGY-BALANCE PYROLYSIS EFFICIENCY YIELD |
| ISSN号 | 0959-6526 |
| 英文摘要 | Converting sewage sludge (SS) into biochar via pyrolysis is proposed as a prospective strategy for recycling nutrients and reducing environmental risks. Yet, from the perspective of carbon (C) balance the viability of pyrolyzing SS still remains unclear. Here we quantified the C footprint of the whole process from raw SS pyrolysis to final disposal of SS-derived biochar (SSB) using life cycle assessment based on a 20-tonne industrial pyrolysis furnace and field experiments. Results indicated that about 0.101 tonnes of direct CO2 equivalent (CO2e) (from N containing organic compounds in SS) plus 1.506 tonnes of indirect CO2e (from energy consumption and dewatering agents) were emitted for each tonne of dry SS treated during its dewatering and pyrolysis processes, and at least 0.252 tonnes of CO2e were sequestered as stable C in SSB, depending on the final application route of SSB. In contrast, the net C emissions from traditional SS treatments amounted to at least 2.432 tonnes of CO2e per tonne of dry SS under the similar scenarios. Converting SS into SSB thus showed great advantages in C balance over the traditional treatments of SS. Sensitivity analyses indicated that the moisture and C contents of SS and the usage of dewatering agents were the key factors affecting C balance in the SSB-to-soil system. These findings highlight the C sequestration potential of pyrolysis and provide important support for the optimization and management of SS treatment. |
| 源URL | [https://ir.rcees.ac.cn/handle/311016/47432]  |
| 专题 | 生态环境研究中心_固体废弃物处理与资源化实验室 |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Res Inst Environm Sci, State Key Lab Environm Criteria & Risk Assessment, Beijing 100012, Peoples R China 3.Beijing Yunshui Haorui Environm Technol Co Ltd, Beijing 100015, Peoples R China 4.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Beijing 100085, Peoples R China |
| 推荐引用方式 GB/T 7714 | Sun, Hao,Luo, Lei,Wang, Dan,et al. Carbon balance analysis of sewage sludge biochar-to-soil system[J]. JOURNAL OF CLEANER PRODUCTION,2022,358(0):132057. |
| APA | Sun, Hao.,Luo, Lei.,Wang, Dan.,Liu, Weina.,Lan, Yushun.,...&Liu, Zhengang.(2022).Carbon balance analysis of sewage sludge biochar-to-soil system.JOURNAL OF CLEANER PRODUCTION,358(0),132057. |
| MLA | Sun, Hao,et al."Carbon balance analysis of sewage sludge biochar-to-soil system".JOURNAL OF CLEANER PRODUCTION 358.0(2022):132057. |
入库方式： OAI收割
来源：生态环境研究中心
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