標題: TREATMENT OF CHROMIUM PLATING RINSE WATER BY ION-EXCHANGE
作者: TAN, H
交大名義發表
應用化學系
National Chiao Tung University
Department of Applied Chemistry
關鍵字: ION EXCHANGE;CHROMIUM PLATING RINSE WATER;COLUMN EXPERIMENTS
公開日期: 1-三月-1994
摘要: Waste rinse water from chromium plating process was treated with strong anion resin, Dowex 1. Column experiments were conducted with bed heights ranging from 15 to 35 cm, flowrates from 0.68 to 2.38 cm/sec and feed concentration from 0.1 to 1 g/l CrO3. Experimental results confirmed the dichromate exchange capacity of the resin. Data from the breakthrough curves indicated high degree of resin utilization. For feed concentration less than 0.3 g/l CrO3 and flowrate of about 1.36 cm/sec, a bed height of at least 30 cm can be used for practical application. For large scale application and for attainment of maximum concentration in the subsequent recovery of chromates upon regeneration, a bed height up to 60 cm is recommended. The fit of all the experimental breakthrough curves by the solution based on second order irreversible reaction was found to be very satisfactory. Thus preliminary design for industrial application can be facilitated by the use of simple equations.
URI: http://hdl.handle.net/11536/2602
ISSN: 0368-1653
期刊: JOURNAL OF THE CHINESE INSTITUTE OF CHEMICAL ENGINEERS
Volume: 25
Issue: 2
起始頁: 77
結束頁: 85
顯示於類別:期刊論文