Rapid and efficient removal of Ni(II) in water using constant-current electrolysis

被引:1
|
作者
Srithanrat, Saranyu [1 ]
Osathaphan, Khemarath [1 ]
Sharma, Virender K. [2 ]
Kraiya, Charoenkwan [3 ]
机构
[1] Chulalongkorn Univ, Dept Environm Engn, Bangkok 10330, Thailand
[2] Texas A&M Univ, Sch Publ Hlth, Dept Environm & Occupat Hlth, 1266 TAMU, College Stn, TX 77843 USA
[3] Chulalongkorn Univ, Fac Sci, Dept Chem, Bangkok 10330, Thailand
关键词
Reduction; Electrochemical method; Wastewater; Toxic metals; Nickel; WASTE-WATER; NICKEL; RECOVERY; MANAGEMENT;
D O I
10.1080/19443994.2015.1075430
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
This study presents a constant-current electrolysis technique to remove Ni(II) efficiently from aqueous solution using an electrochemical cell. Three electrodes of aluminum, stainless steel, and graphite were used as cathodes, while rectangular graphite plates were the anode. The effects of solution pH values (0.3-7.0) and applied current density (I=100-200A/m(2)) were investigated. Complete removal of Ni(II) ions was achieved within 12min using a graphite cathode at pH 1.0 and I=140A/m(2), which had a current efficiency of 38%. Under the same conditions, more than 99% removal of Ni(II) was obtained from wastewater within 60min of electrolysis time.
引用
收藏
页码:15952 / 15957
页数:6
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