Oxidative chromium recovery from tannery sludge

Küçük Resim Yok

Tarih

2011

Yazarlar

Dergi Başlığı

Dergi ISSN

Cilt Başlığı

Yayıncı

International Union of Leather Technologists and Chemists Societies (IULTCS)

Erişim Hakkı

info:eu-repo/semantics/closedAccess

Özet

As a result of increased environmental awareness and strict environmental legislations, it is necessary to develop cost-effective and environmentally acceptable remediation solutions for high chromium containing tannery sludge. In this paper, an oxidative chromium recovery treatment is presented. Dewatered tannery sludge samples were treated with hydrogen peroxide on a laboratory scale. The main steps of H2O2 treatment include Cr(III) oxidation to Cr(VI) and extraction with sulfuric acid solution at pH 2. H2O2 treatment enabled to extract 70% of chromium within less than 4 hours at room temperature. The results indicate that hydrogen peroxide treatment is effective and the duration of the process is short and requires cheap chemicals and moderate conditions. Application of oxidative treatment to tannery sludge will provide economical benefit and environmental protection as it enables high percentage of chromium recovery. The removal of organic material in tannery sludge prior to chromium recovery treatment would probably increase the percentage of chromium recovery more than 70% due to the lower content of organic matter to bind the chromium. Investigations are in progress to improve the efficiency of oxidative recovery process.

Açıklama

BASF;Clariant Iberica;Colorantes Industriales;Cromogenia Units;Dercosa;et al.
31st Congress of the International Union of Leather Technologists and Chemists Societies, IULTCS 2011 -- 27 September 2011 through 30 September 2011 -- 109691

Anahtar Kelimeler

Chromium recovery, Hydrogen peroxide, Oxidative treatment, Tannery sludge

Kaynak

31st IULTCS Congress

WoS Q Değeri

Scopus Q Değeri

N/A

Cilt

Sayı

Künye

Bağlantı

https://hdl.handle.net/11454/19460

Koleksiyon

Scopus İndeksli Yayınlar Koleksiyonu