生物炭改性土的甲烷吸附试验研究

江超; 赵仲辉; 刘秉岳

doi:10.11779/CJGE2017S1023

生物炭改性土的甲烷吸附试验研究 English Version

江超^1,2,
赵仲辉^1,2, ,,
刘秉岳³

1. 河海大学岩土工程及堤坝工程教育部重点实验室,江苏南京 210098;
2.江苏省岩土工程技术工程研究中心,江苏南京 210098;
3. 九江职业技术学院,江西九江 332007

基金项目: 中央高校基本科研业务费项目（2017B00914）

详细信息

作者简介:
江超(1992-),男,硕士研究生,主要从事环境岩土相关研究。E-mail:hhuzxq@163.com。

通讯作者:
赵仲辉，E-mail：cf.chiu@gmail.com

计量
- 文章访问数: 0262
- HTML全文浏览量: 0
- PDF下载量: 0242
出版历程
- 收稿日期: 2016-11-27
- 发布日期: 2017-11-19

Laboratory study on methane adsorption of biochar-modified soil

1. Key Laboratory of Ministry of Education for Geo-mechanics and Embankment Engineering, Hohai University, Nanjing 210098, China;
2. Jiangsu Research Center for Geotechnical Engineering Technology, Hohai University, Nanjing 210098, China;
3. Jiujiang Vocational and Technical College, Jiujiang 332007, China

摘要

摘要: 生物覆盖层是一种新型生活垃圾填埋场覆盖层,对比传统的压实黏土覆盖层其具有较高的甲烷氧化能力,减少垃圾填埋场甲烷的释放。生物炭作为生物覆盖介质,除了提高土壤甲烷氧化能力之外,其较大的比表面积还能增加甲烷吸附能力。为更好地理解生物炭对土壤的甲烷吸附特性的影响,通过批量吸附试验研究生物炭改性土在不同甲烷初始浓度与生物炭掺量下的甲烷吸附能力。试验结果表明添加生物炭能提高土壤甲烷吸附能力,相比较原土,炭掺量为20%的改性土最大甲烷吸附量提高了一个量级,甲烷吸附能力得到明显提高主要得益于生物炭的多孔结构。并且生物炭改性土的吸附特性均符合Lagergren准二级吸附动力模型和Langmuir等温吸附模型。
- 粉土 /
- 生物炭 /
- 甲烷 /
- 吸附 /
- 批量试验
Abstract: Bio-cover is a novel MSW landfill cover. Compared to the conventional compacted clay cover, it exhibits a higher methane oxidization capacity to mitigate methane emissions from landfill. Use of biochar in the bio-cover can enhance methane oxidization and adsorption capacity because of its high specific surface area. To better understand the effects of biochar on the methane adsorption capacity, a series of batch adsorption tests on a biochar-modified soil are conducted under different initial methane concentrations and biochar contents. The test results show that the methane absorption capacity increases with the increasing biochar content. Compared to the untreated soil, an addition of 20% biochar (weight of dry soil) can increase around 10 times the maximum amount of methane adsorption. It is postulated that the highly porous structure of biochar is the principal factor that enhances the methane adsorption capacity. Furthermore, the pseudo-second order kinetics and the Langmuir isotherm models can be used to evaluate the adsorption process of the biochar-modified soil.
- silt /
- biochar /
- methane /
- adsorption /
- batch test

HTML全文

参考文献(10)

[1]	HUMER M, LECHNER P. Microbial methane oxidation for the reductionof landfill gas emissions[J]. Journal of Solid Waste Technology and Management, 2001, 27(3/4): 146-151.
[2]	杨益彪, 詹良通, 陈云敏, 等. 垃圾填埋场覆盖黄土的甲烷氧化能力及其影响因素研究[J]. 中国环境科学, 2015, 35(2): 484-492. (YANG Yi-biao, ZHAN Liang-tong, CHEN Yun-ming, et al. Methane oxidation capacity of landfill cover loess and its impact factors[J]. China Environmental Engineering, 2015, 35(2): 484-492. (in Chinese))
[3]	YAGHOUBI P. Development of biochar-amended landfill cover for landfill gas mitigation[D]. Chicago: University of Illinois at Chicago, 2011.
[4]	刘秉岳, 赵仲辉, 涂欢欢, 等. 生物炭改性填埋场覆盖粉土的甲烷氧化能力试验研究[J]. 科学技术与工程, 2015, 15(36): (LIU Bing-yue, ZHAO Zhong-hui, TU Huan-huan, et al. Methane oxidation capacity of landfill cover biochar amended silt[J]. Science Technology and Engineering, 2015, 15(36): (in Chinese))
[5]	KARAMI N, CLEMENTE R, MORENO-JIMNEZ E, et al. Efficiency of green waste compost and biochar soil amendments for reducing lead and copper mobility and uptake to ryegrass[J]. Journal of Hazardous Materials, 2011, 191(1/2/3): 41-8.
[6]	孙辉, 薛文平, 姜莉莉, 等. 活性炭纤维吸附苯系物影响因素的研究[J]. 环境科学与技术, 2007, 30(7): 18-19. (SUN Hui, XUE Wen-ping, JIANG Li-li,et al. Impact factors of benzenes adsorption by activated carbon fiber[J]. Environmental Science & Technology, 2007, 30(7): 18-19. (in Chinese))
[7]	SADASIVAM B Y, REDDY K R. Adsorption and transport of methane in landfill cover soil amended with waste-wood biochars[J]. Journal of Environmental Management, 2015, 158: 11-23.
[8]	WANG S L, TZOU Y M, LU Y H, et al. Removal of 3-chlorophenol from water using rice-straw-based carbon[J]. Journal of Hazardous Materials, 2007, 147(S1/2): 313-318.
[9]	SEGERS R. Methane production and methane consumption: a review of processes underlying wetland methane fluxes[J]. Biogeochemistry, 1998, 41(1): 23 51.
[10]	近藤精一, 石川达雄, 安部郁夫. 吸附科学[M]. 2版. 北京: 化学工业出版社, 2006. (KONDO S, ISHIKAWA T, ABE I. Adsorption science[M]. 2nd ed. Beijing: Chemical Industry Press, 2006. (in Chinese))

施引文献

资源附件(0)

计量

文章访问数:
HTML全文浏览量: 0
PDF下载量:
被引次数: 0

生物炭改性土的甲烷吸附试验研究 English Version

作者简介: 江超(1992-),男,硕士研究生,主要从事环境岩土相关研究。E-mail:hhuzxq@163.com。

通讯作者: 赵仲辉，E-mail：cf.chiu@gmail.com

计量

出版历程

Laboratory study on methane adsorption of biochar-modified soil

计量

出版历程

目录

作者简介:
江超(1992-),男,硕士研究生,主要从事环境岩土相关研究。E-mail:hhuzxq@163.com。

通讯作者:
赵仲辉，E-mail：cf.chiu@gmail.com