標題: Adsorption characteristics of ammonium ion onto hydrous biochars in dilute aqueous solutions
作者: Fan, Ruemei
Chen, Ching-lung
Lin, Jui-yen
Tzeng, Jing-hua
Huang, Chih-pin
Dong, Chengdi
Huang, C. P.
環境工程研究所
Institute of Environmental Engineering
關鍵字: Ammonium;Biochar;Heterogeneous adsorption;Surface complexation;Surface precipitation;Slow-release fertilizer
公開日期: 1-Jan-2019
摘要: This research aims at studying the characteristics of ammonium adsorption onto hydrous bamboo biochar. Results showed that pH played the most important role in ammonium adsorption. High ionic strength enhanced the ammonium adsorption capacity of bamboo biochar. Ammonium adsorption was exothermic and spontaneous. FTIR results showed shift, disappearance, or appearance of specific functional groups on the bamboo biochar surface. Surface precipitation and complex formation contributed to the adsorption of ammonium onto hydrous bamboo biochar. Biochar can be an effective adsorbate for ammonium removal from water. Additionally, the formation of nitrogen containing precipitates on the biochar surface, potentially, leads to the in-situ synthesis of slow-release fertilizer.
URI: http://dx.doi.org/10.1016/j.biortech.2018.10.064
http://hdl.handle.net/11536/148528
ISSN: 0960-8524
DOI: 10.1016/j.biortech.2018.10.064
期刊: BIORESOURCE TECHNOLOGY
Volume: 272
起始頁: 465
結束頁: 472
Appears in Collections:Articles