High efficient removal of molybdenum from water by Fe2(SO4)3: Effects of pH and affecting factors in the presence of co-existing background constituents

被引：24

作者：

Zhang, Xiang ^{[1
]}

Ma, Jun ^{[1
]}

Lu, Xixin ^{[1
]}

Huangfu, Xiaoliu ^{[1
]}

Zou, Jing ^{[1
]}

机构：

[1] Harbin Inst Technol, Sch Municipal & Environm Engn, State Key Lab Urban Water Resource & Environm, Harbin 150006, Peoples R China

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2015年 / 300卷

关键词：

Mo (VI) removal; Fe-2(SO4)(3) coagulation-filtration; pH; Co-existing background constituents; COMPETITIVE ADSORPTION; MOLYBDATE ADSORPTION; ARSENIC REMOVAL; DRINKING-WATER; SULFATE; TETRATHIOMOLYBDATE; MECHANISM; SELENATE; CHROMATE; ANIONS;

D O I：

10.1016/j.jhazmat.2015.08.026

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Comparatively investigated the different effects of Fe-2(SO4)(3) coagulation-filtration and FeCl3 coagulation-filtration on the removal of Mo (VI). And the influence of calcium, sulfate, silicate, phosphate and humic acid (HA) were also studied. The following conclusions can be obtained: (1) compared with the case of FeCl3, Fez (SO4)(3) showed a higher Mo (VI) removal efficiency at pH 4.00-5.00, but an equal removal efficiency at pH 6.00-9.00. (2) The optimum Mo (VI) removal by Fe-2(SO4)(3) was achieved at pH 5.00-6.00; (3) The presence of calcium can reduce the removal of Mo (VI) over the entire pH range in the present study; (4) The effect of co-existing background anions (including HA) was dominated by three factors: Firstly the influence of co-existing background anions on the content of Fe intercepted from water (intercepted Fe). Secondly the competition of co-existing anions with Mo (VI) for adsorption sites. Thirdly the influence of co-existing background anions on the Zeta potential of the iron flocs. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：823 / 829

页数：7

共 21 条

[1] Removal, preconcentration and determination of Mo(VI) from water and wastewater samples using maghemite nanoparticles [J].