adsorption;
adsorption kinetics;
chitosan;
co-precipitation;
heavy metals;
magnetic nanoparticles;
WATER;
ADSORPTION;
IONS;
D O I:
10.2166/wst.2014.315
中图分类号:
X [环境科学、安全科学];
学科分类号:
08 ;
0830 ;
摘要:
This study investigated the applicability of magnetite Fe3O4 nanoparticles coated with chitosan (CMNs) for the removal of some toxic heavy metals from simulated wastewater. Magnetic nanomaterials were synthesized using the co-precipitation method and characterized by transmission electron microscope, scanning electron microscope, X-ray diffraction, and Fourier transformer infrared spectroscopy. The magnetic properties of the prepared magnetic nanoparticles were determined by a vibrating-sample magnetometer. Batch experiments were carried out to determine the adsorption kinetics of Cr(VI) and Cd(II) by magnetic nanoparticles. It is noteworthy that CMNs show a highly efficient adsorption capacity for low concentration Cr(VI) and Cd(II) ions solution, which can reach 98% within 10 min.
机构:
S China Normal Univ, Sch Chem & Environm, Guangzhou Higher Educ Mega Ctr, Guangzhou 510006, Guangdong, Peoples R China
S China Normal Univ, Guangdong Technol Res Ctr Ecol Management & Remed, Guangzhou 510006, Guangdong, Peoples R ChinaS China Normal Univ, Sch Chem & Environm, Guangzhou Higher Educ Mega Ctr, Guangzhou 510006, Guangdong, Peoples R China
Zheng, Liuchun
Meng, Peipei
论文数: 0引用数: 0
h-index: 0
机构:
Jinan Univ, Coll Environm, Guangzhou 510632, Guangdong, Peoples R China
S China Normal Univ, Guangdong Technol Res Ctr Ecol Management & Remed, Guangzhou 510006, Guangdong, Peoples R ChinaS China Normal Univ, Sch Chem & Environm, Guangzhou Higher Educ Mega Ctr, Guangzhou 510006, Guangdong, Peoples R China
机构:
Beijing Univ Technol, Key Lab Water Qual Sci & Water Environm Recovery, Beijing 100124, Peoples R China
Environm Protect Res Inst Light Ind, Beijing 100089, Peoples R ChinaBeijing Univ Technol, Key Lab Water Qual Sci & Water Environm Recovery, Beijing 100124, Peoples R China
Hao, Runqin
Li, Dong
论文数: 0引用数: 0
h-index: 0
机构:
Beijing Univ Technol, Key Lab Water Qual Sci & Water Environm Recovery, Beijing 100124, Peoples R ChinaBeijing Univ Technol, Key Lab Water Qual Sci & Water Environm Recovery, Beijing 100124, Peoples R China
Li, Dong
Zhang, Jie
论文数: 0引用数: 0
h-index: 0
机构:
Beijing Univ Technol, Key Lab Water Qual Sci & Water Environm Recovery, Beijing 100124, Peoples R China
Harbin Inst Technol, State Key Lab Urban Water Resource & Environm, Harbin 150090, Peoples R ChinaBeijing Univ Technol, Key Lab Water Qual Sci & Water Environm Recovery, Beijing 100124, Peoples R China