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International Journal of Advanced Engineering, Management and Science


Managing the Quality of Chromium Sulphate during the Recycling From Tanning Waste Water

( Vol-2,Issue-10,October 2016 )

Author(s): M Badar, Fatima Batool, Muhammad Idrees, M Ahsan Zia, Hafiz Reehan Iqbal



Total View : 561
Downloads : 6
Page No: 1711-1718
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Keywords:

Economical Recovery, Chromium, Tanning, Chemicals, Recycling.

Abstract:

Quality management is a big issue during recovery and recycling process because if desired quality is not received during chromium recovery or recycling process, we may be faced another problem of recycled materials. This also seen that most important that the production processes is useless without taking specific required quality of chromium., in real way about 60%-70% of chromium salt is used as chemical interaction with the hides but 30%-40% of chemical chromium salt is wasted as the solid and liquid form. Therefore, the quality during the recovery process of the chromium sulphate from chromium wastewater that is most important step for controlling environmental pollution with some economical benefits. Recycling of chromium sulphate is possible by using chemical precipitation method for water treatment, two precipitating agents’ magnesium oxide and calcium hydroxide plus alum are used for this purpose. Final findings showed that the optimum pH for efficient recovery with required quality was 8 and the Recycling of chromium sulphate was about 99(%) at pH 8 with good sludge with high settling rate. on the Base of these findings an economical production plant can be designed which are useful for quality improvement.

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