Removal of Cd, Pb and Cu from Water Using Thiol and Humic Acid Functionalized Fe2O3 Nanoparticles
文献类型: 外文期刊
第一作者: Wang Meng
作者: Wang Meng;Chen Shibao
作者机构:
关键词: functionalization;Fe2O3 nano-particles;Pb;Cd;Cu;adsorption
期刊名称:ADVANCES IN ENVIRONMENTAL SCIENCE AND ENGINEERING, PTS 1-6
ISSN: 1022-6680
年卷期: 2012 年 518-523 卷
页码:
收录情况: SCI
摘要: Humic acid (HA) and 3-Mercaptopropyltriethoxysilane (MPTES) were successfully coated onto the surface of Fe2O3 (alpha and gamma) nano-particles as characterized using IR and BET-N-2 analysis, the potential use of the naked and functionalized nano-Fe2O3 particles as novel nano-sorbents for removal of Cd, Pb and Cu ions in solution was investigated in this study. The result indicated that the sorption of Cd, Pb and Cu ions by the nano-particles can be fitted well using langmuir isotherm; all the adsorbents exhibited definitely adsorption ability to Cd, Pb and Cu ions in solution. The sorption maximum and sorption affinity on the nano-particles for Pb (aq) were always higher than Cu (aq) and Cd (aq), the sorption maxima for the Pb, Cd and Cu followed the order Pb>Cu>Cd. Among the nano-sorbents, the Fe2O3 (alpha and gamma) nano-particles coated with HA exhibited higher sorption ability to metal ions than the naked and thiolated Fe2O3 nano-particles, the sorption maxima of alpha-Fe2O3/HA for Pb(aq) reached 151.5 mg/g, which was significantly higher than the values of 116.3 and 84.0 mg/g observed for the alpha-Fe2O3 and alpha- Fe2O3/MPTES particles. However, no increased sorption maxima was observed for the thiolated Fe2O3 nano-particles (Fe2O3/MPTES) for the metal ions compared with the naked Fe2O3 nano-particles in this study. The greater capability of Fe2O3/HA to adsorb Cd(aq), Pb(aq), Cu(aq) indicates its potential use as another promising way to remediate metals-contaminated water.
分类号:
- 相关文献
作者其他论文 更多>>
-
The Influence of Anthocyanin on Plant Optical Properties and Remote Sensing Estimation at the Scale of Leaf
作者:LIANG Shou-zhen;SUI Xue-yan;WANG Meng;WANG Fei;HAN Dong-rui;WANG Guo-liang;LI Hong-zhong;MA Wan-dong
关键词:Anthocyanin; Sensitivity analysis; Radiative transfer model; Remote sensing
-
Study on Relationship Between Photosynthetic Rate and Hyperspectral Indexes of Wheat Under Stripe Rust Stress
作者:Zhang Xiao-yan;Hou Xue-hui;Wang Meng;Wang Li-li;Liu Feng
关键词:Wheat; Stripe rust; Photosynthetic rate; Imaging hyperspectral; Estimating model
-
Combined application of Trichoderma harzianum SH2303 and difenoconazole-propiconazolein controlling Southern corn leaf blight disease caused by Cochliobolus heterostrophus in maize
作者:Wang Shao-qing;Wang Meng;Wang Xin-hua;Li Ya-qian;Chen Jie;Wang Shao-qing;Wang Meng;Wang Xin-hua;Li Ya-qian;Chen Jie;Wang Shao-qing;Wang Meng;Wang Xin-hua;Li Ya-qian;Chen Jie;Ma Jia
关键词:synergistic bio-control; chemical fungicide; Trichoderma harzianum; maize leaf spot disease
-
Overview on current criteria for heavy metals and its hint for the revision of soil environmental quality standards in China
作者:Chen Shi-bao;Wang Meng;Li Shan-shan;Zhao Zhong-qiu;E Wen-di
关键词:soil; heavy metals; regulatory standards; soil science; policy
-
Toxicity threshold of lead (Pb) to nitrifying microorganisms in soils determined by substrate-induced nitrification assay and prediction model
作者:Zheng Han;Li Ning;Liu Bin;Meng Nan;Wang Meng;Chen Shi-bao;Chen Li
关键词:dose-response;lead (Pb);polluted soil;substrate-induced nitrification
-
Development of SSR Markers for a Phytopathogenic Fungus, Blumeria graminis f.sp tritici, Using a FIASCO Protocol
作者:Yang Peng;Duan Xia-yu;Zhou Yi-lin;Wang Meng;Shen Chong-yao;Zhang Guo-zhen;Wang Meng;Xue Fei;Yang Peng;Wang Bao-tong
关键词:Blumeria graminis f.sp tritici;microsatellite;SSR;FIASCO
-
Construction of Streptomyces lydicus A01 transformant with the chit33 gene from Trichoderma harzianum CECT2413 and its biocontrol effect on Fusaria
作者:Wu Qiong;Li YingYing;Li YaQian;Lin ZhenYa;Wang Meng;Chen Jie;Bai LinQuan;Liu WeiCheng;Lu CaiGe;Xue ChunSheng
关键词:Streptomyces lydicus A01;chit33 conjugal transformant;wide-type strain;chitinase activity;natamycin production;Fusarium