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Effect of Anaerobic Digestion on Chrome Sludge – A By-product of Tanned Lather Waste

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dc.title Effect of Anaerobic Digestion on Chrome Sludge – A By-product of Tanned Lather Waste en
dc.contributor.author Saha, Nabanita
dc.contributor.author Křesálková, Martina
dc.contributor.author Sáha, Lubomír
dc.contributor.author Kolomazník, Karel
dc.relation.ispartof Journal of American Leather Chemists Association
dc.identifier.issn 0002-9726 Scopus Sources, Sherpa/RoMEO, JCR
dc.date.issued 2003-07
utb.relation.volume 98
utb.relation.issue 7
dc.citation.spage 256
dc.citation.epage 262
dc.type article
dc.language.iso en
dc.publisher American Chemical Society (ACS) en
dc.subject anaerobní rozklad cs
dc.subject koželužský odpad cs
dc.subject chromitý kal cs
dc.subject Anaerobic digestion en
dc.subject Leather waste en
dc.subject Chrome sludge en
dc.description.abstract The leather industry is environmentally important as a user of a by-product of the meat industry. It is perceived as a consumer of resources and a producer of pollutants. The most serious problem is chrome tanned solid wastes, which are now under control through alkali-enzymatic hydrolysis treatment of chrome shavings. The main products of this hydrolytic reaction are gelable protein hydrolysate, enzymatic hydrolysate, and chrome sludge. In chrome sludge, the rest of the biomaterial is collagen protein. Approximately 20-40 % (on free moisture basis) is strongly bound as co-ordinate complex with chromium, which creats serious problems for further treatment of it to recover tanning salt. One possible solution is to decrease the content of collagen protein by anaerobic digestion, which is presented in this paper. The effect of anaerobic digestion on chrome sludge was observed under controlled conditions using different fermentation compositions of broth at 50degreesC for a 15 day incubation period. Sludge, inoculum and water at 3: 1:1 ratio was determined to be the optimum fermentation composition from the bioconversion point-of-view. During anaerobic digestion, the content of biomaterial associated with the chrome sludge decreased while the quantity of free chromium increased. These observations were confirmed by attenuated total reflectance (ATR) using FTIR spectophotometric and scanning electron microscopic (SEM) analysis. en
utb.faculty Faculty of Technology
dc.identifier.uri http://hdl.handle.net/10563/1000265
utb.identifier.rivid RIV/70883521:28110/03:63501622
utb.identifier.obdid 11553107
utb.identifier.scopus 2-s2.0-0042766995
utb.identifier.wok 000183986200002
utb.source j-riv
utb.contributor.internalauthor Saha, Nabanita
utb.contributor.internalauthor Křesálková, Martina
utb.contributor.internalauthor Sáha, Lubomír
utb.contributor.internalauthor Kolomazník, Karel
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