Tanning

Trivalent chromium is present at high concentration in effluents from the tanning process in the leather industry. The chromium recycling process must be able to separate chromium from other cations (mainly Na+ but also Ca2+, Mg2+) because their presence has a negative effect on the quality of the t

In the chromium tanning process leather consumes 60–80% of the applied chromium salt and the rest is usually discharged into sewage without adequate treatment, causing serious environmental impact. Chemical analysis of the spent chromium effluents from two local medium-size tannery shops indicated t

In chromium tanning process, about 20–40% of applied chromium is usually discharged into sewerage system causing serious environmental impact. The spent chromium effluents collected from two local small-size tanneries indicated that chromium concentration ranged from 1300–2500 mg Cr6+/l, while NaCl