CHROME RECYCLING PROCESS OF TANNERY LEATHER INDUSTRY WASTE USING LIMER
CHROME RECYCLING PROCESS OF TANNERY LEATHER INDUSTRY WASTE USING LIMER
Author : ROSAD MA'ALI EL HADI Published on : International Seminar on Industrial Engineering and Management
Abstract
Tannery wastes containing chromium are high, bad for humans and environmental components. The high chromium content of which can be recovered by process neutralization, the amount of chromium waste until the level is not harmful. Decision-chrome with good results and low cost, it can be done using a mixture of lime (Ca (OH) 2) with various concentration of 0.2% lime, 0.4%, 0.6% and 0.8%. The results that addition of 0.4% lime can produce chrome of 61.35% with a purity of 56.14%, calculated sulfate and chromium compounds can raise the pH of the waste water of pH 3.2 to pH 12.0.
