Reduction of chromate by molybdenum hydrogen bronze

被引：1
|
作者：
Barber, Kevin N. [1 ]
Perkins, Cory K. [1 ]
Apblett, Allen W. [1 ]
机构：
[1] Oklahoma State Univ, Dept Chem, Stillwater, OK 74078 USA
来源：
CANADIAN JOURNAL OF CHEMISTRY | 2016年 / 94卷 / 04期
关键词：
chromate; reduction; adsorption; molybdenum hydrogen bronze; IN-SITU REMEDIATION; POLLUTED GROUNDWATERS; HEXAVALENT CHROMIUM; ION-EXCHANGE; WASTE-WATER; REMOVAL; KINETICS; CR(VI); SEPARATION; SULFIDE;
D O I：
10.1139/cjc-2015-0381
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Molybdenum hydrogen bronze, H0.57MoO3, is capable of removing up to 80 mequiv./g chromate from aqueous solution. The redox process is accompanied by adsorption of the reduced chromium species so that the chromium is completely removed from solution. Chromate removal was only weakly dependent on pH, being slightly favored at acidic pH. The kinetics appear to involve the rapid adsorption of chromate in an equilibrium process that is followed by reduction of the chromium(VI). The rate constant was found to be first order in chromate and the amount of suspended H0.57MoO3 with a rate constant of 1.40 L g(-1) min(-1).
引用
收藏
页码：401 / 405
页数：5
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