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DOI: 10.1371/journal.pone.0148132
论文题名:
Preparation and Characterization of Biochars from Eichornia crassipes for Cadmium Removal in Aqueous Solutions
作者: Feng Li; Kaixuan Shen; Xiaolin Long; Jiasheng Wen; Xiaojie Xie; Xiangyun Zeng; Yanyan Liang; Yansha Wei; Zefeng Lin; Wenrou Huang; Ruida Zhong
刊名: PLOS ONE
ISSN: 1932-6203
出版年: 2016
发表日期: 2016-2-16
卷: 11, 期:2
语种: 英语
英文关键词: Adsorption ; Isotherms ; Sorption ; Aqueous solutions ; Functional groups ; Heavy metals ; Chemical equilibrium ; Water pollution
英文摘要: The study investigated the preparation and characterization of biochars from water hyacinth at 300°C to 700°C for cadmium (Cd) removal from aqueous solutions. The adsorption process was dominated by oxygen-containing functional groups with irregular surfaces via esterification reactions. Furthermore, the mineral components in the biochars also contributed to Cd absorption through precipitation. Parameters such as the effects of solution pH, contact time, and initial concentration were studied. The optimum pH value was observed at 5.0, in which nearly 90% of Cd was removed. The maximum Cd adsorption capacities based on the Langmuir isotherm were calculated at 49.837, 36.899, and 25.826 mg g−1. The adsorption processes of the biochars followed the pseudo-second-order kinetics, with the equilibrium achieved around 5 h. The biochar from E. crassipes is a promising adsorbent for the treatment of wastewater, which can in turn convert one environmental problem to a new cleaning Technology.
URL: http://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0148132&type=printable
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/23806
Appears in Collections:过去全球变化的重建
影响、适应和脆弱性
科学计划与规划
气候变化与战略
全球变化的国际研究计划
气候减缓与适应
气候变化事实与影响

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作者单位: School of Civil Engineering, South China University of Technology, Guangzhou, 510640, China;State Key Laboratory of Subtropical Building Science, South China University of Technology, Guangzhou, 510640, China;School of Civil Engineering, South China University of Technology, Guangzhou, 510640, China;School of Civil Engineering, South China University of Technology, Guangzhou, 510640, China;School of Civil Engineering, South China University of Technology, Guangzhou, 510640, China;School of Civil Engineering, South China University of Technology, Guangzhou, 510640, China;School of Civil Engineering, South China University of Technology, Guangzhou, 510640, China;School of Civil Engineering, South China University of Technology, Guangzhou, 510640, China;School of Civil Engineering, South China University of Technology, Guangzhou, 510640, China;School of Civil Engineering, South China University of Technology, Guangzhou, 510640, China;School of Civil Engineering, South China University of Technology, Guangzhou, 510640, China;School of Civil Engineering, South China University of Technology, Guangzhou, 510640, China

Recommended Citation:
Feng Li,Kaixuan Shen,Xiaolin Long,et al. Preparation and Characterization of Biochars from Eichornia crassipes for Cadmium Removal in Aqueous Solutions[J]. PLOS ONE,2016-01-01,11(2)
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