Chrome recycling process of tannery leather industry waste using limes  

Oleh:

El Hadi, Rosad Ma’ali ; Andias, Rino ; Haris, Rachmat

Jenis: Article from Proceeding
Dalam koleksi: PROCEEDING The 8th International Seminar on Industrial Engineering and Management (8th ISIEM). Atria Hotel & Conference, Malang, Indonesia March 17 – 19, 2015, halaman QM-17.
Topik: Waste; Chrome; reuse
Fulltext: Paper 38 Rosad Ma ali El Hadi - Telkom University.pdf (260,33KB)

Isi artikel

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.

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