作者
Yaoyao Zhu, Baoqing Shan, Jianyin Huang, Peter R Teasdale, Wenzhong Tang
发表日期
2019/10/15
期刊
Chemical Engineering Journal
卷号
374
页码范围
811-821
出版商
Elsevier
简介
Evaluation of in situ capping with biochar (BC) to control ammonia nitrogen (NH4+-N) release from the sediments of Baiyangdian Lake, the largest freshwater lake in northern China, was performed after 10 months of field and mesocosm experiments. The concentration of NH4+-N in pore water and its resupply from native sediments and capped sediments were determined using the technique of diffusive equilibrium in thin films (DET) and the technique of diffusive gradients in thin films with CMI-7000 cation ion exchange membrane (CMI-DGT) binding layer. The results showed a low concentration of NH4+-N in pore water and a low resupply from the sediment or capping materials after BC capping. The concentration of bioavailable NH4+-N measured by DGT of the top 4 cm layer in BC capping layer was only 12.8%−29.2% of the native sediments. Flux DET-NH4+-N, could be reduced from 12.74 to 3.44 mg·m−2 …
学术搜索中的文章
Y Zhu, B Shan, J Huang, PR Teasdale, W Tang - Chemical Engineering Journal, 2019