Enhanced phosphate removal during the simultaneous adsorption of phosphate and Ni2+ from electroless nickel wastewater by calcium silicate hydrate (CSH)

被引：35

作者：

Zhao, Yue ^{[1
]}

Chen, Hui ^{[1
]}

Yan, Qun ^{[1
,2
,3
]}

机构：

[1] Jiangnan Univ, Sch Environm & Civil Engn, Wuxi 214122, Peoples R China

[2] Jiangsu Key Lab Anaerob Biotechnol, Wuxi 214122, Peoples R China

[3] Jiangsu Collaborat Innovat Ctr Technol & Mat Wate, Suzhou 215011, Peoples R China

来源：

ENVIRONMENTAL TECHNOLOGY & INNOVATION | 2017年 / 8卷

基金：

中国国家自然科学基金;

关键词：

Calcium silicate hydrate; Electroless nickel wastewater; Simultaneous adsorption; Nickel; Enhanced phosphate removal; HEAVY-METAL IONS; AQUEOUS-SOLUTIONS; FLY-ASH; PHOSPHORUS; PRECIPITATION; KINETICS; IMMOBILIZATION; ISOTHERMS; HYDROXIDE; ADSORBENT;

D O I：

10.1016/j.eti.2017.01.002

中图分类号：

Q81 [生物工程学（生物技术）]; Q93 [微生物学];

学科分类号：

071005 ; 0836 ; 090102 ; 100705 ;

摘要：

Enhanced phosphate removal during the simultaneous adsorption of phosphate and Ni2+ using calcium silicate hydrate (CSH) were investigated. Firstly, it was found that the maximum adsorption capacity of CSH for phosphate reached 179.4 and 209.6 mg/g during the independent and the simultaneous adsorption process, respectively. Meanwhile, higher and steady sorption capacity for phosphate could be obtained at the pH ranged from 3 to 7 and the accompanying Ni2+ concentration ranged from 0 to 300 mg/L. In addition, the independent/simultaneous adsorption of the phosphate and Ni2+ was characterized using SEM-EDS and XRD. Moreover, it was discovered that the kinetic constant for phosphate decay during the independent phosphate removal process reached 0.6052, while which was increased to 0.7571 during the simultaneous adsorption process. Finally, it was found that the adsorption efficiency for phosphate and Ni2+ by CSH from actual electroless nickel wastewater reached 98.67% and 98.75%, respectively. (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：141 / 149

页数：9

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