1. Consortium of Microalgae for Tannery Effluent Treatment

Abstract Wastewater generated in tanneries have essential elements for microalgae growth, but it has also some toxic compounds that may hinder or restrain the growth of microalgae in this environment. This work tested microalgae consortium growth originating from a deactivated effluent treatment decanter of a complete tannery (beamhouse to finished leather)

Braz. arch. biol. technol.. Publicado em: 13/06/2019

2. Impact of environmental stress on biochemical parameters of bacteria reducing chromium

Chromium pollution is produced in connection with industrial processes like in tanneries. It has been suggested that bioremediation could be a good option for clean up. The stress effect of variable chromate levels, pHs and growth temperatures on biochemical parameters of two Cr(VI) reducing bacterial strains Pseudomonas aeruginosa Rb-1 and Ochrobactrum inte

Braz. J. Microbiol.. Publicado em: 2014-06

3. Application of enzymes in leather processing: a comparison between chemical and coenzymatic processes

The use of biotechnology by tanneries has increased in recent years. Enzymes can be applied during different steps of the leather production process: soaking, dehairing, bating, dyeing, degreasing or in effluent and solid waste treatment. This study evaluated the performance of five commercial enzymes in soaking and unhairing/liming by comparing the chemical

Braz. J. Chem. Eng.. Publicado em: 2012-09

4. Effect of Chemically Treated Leather Shaving Addition on characteristics and microstructure of OPC mortars

The growing concern with environmental issues in tanneries and the search for a technological solution to their wastes are evaluated in this study. The leather shaving was chemically treated aiming the immobilization of the chromium ion on ordinary Portland cement (OPC) matrix. Cementitious mortars were obtained by adding different proportions of waste treat

Materials Research. Publicado em: 31/01/2012

5. Aproveitamento da glicerina proveniente da produção de biodiesel na obtenção de híbrido de caulinita para adsorção de Cr3+

The aim of this work was to contribute to the creation of new ways of treating wastewater contaminated with Cr3+, based on solid-liquid adsorption. An adsorbent material was prepared by functionalization of kaolinite with glycerin biodiesel by-product. This material was tested for adsorption performed using a batch method, and results showed that inclusion o

Química Nova. Publicado em: 2012

6. Hide unhairing and characterization of commercial enzymes used in leather manufacture

The enzymatic treatment of hides in tannery processes is a promising technology. However, the reaction kinetics of commercial enzymes available to the leather industry are not fully understood and their activities have been mainly determined with model proteins such as casein as substrate, which are not of direct relevance for cattle hides. Therefore, it is

Brazilian Journal of Chemical Engineering. Publicado em: 2011-09

7. Assessment of water management in tanneries : State of Rio Grande do Sul case study

Publicado em: 2011

8. Study of influence of the shave leather chemically treated addition on the characteristics of mortar cement Portland / Estudo da influência da adição de serragem de couro tratada quimicamente nas características de argamassas de cimento Portland

The purpose of this study was to examine the major environmental concern for the large volume of toxic wastes generated by industries of tanneries and the search for a technological solution for the treatment of this waste. The attempt to tie the chromium ion present on residue, shave chrome leather, was used in three steps. In the first step, solutions were

Publicado em: 2009

9. A relação entre a tecnologia da informação e comunicação e a competitividade : estudo em empresas do pólo calçadista de Jaú/SP

Jaús region, in the center of the State of São Paulo, is home for a group of companies specialized in the production of women shoes. They are industries, studios or backstitch stands, raw material suppliers, machines and equipments, for the whole productive chain of the shoes industries, including the tanneries, responsible for the supply of the main raw m

Publicado em: 2009

10. Origem, distribuição e mobilidade potencial de metais pesados em ambiente fluvial impactado por curtumes

Neste estudo, avaliou-se a ocorrência de metais pesados em ambiente fluvial sob influência de curtumes - a bacia hidrográfica dos rios Cadeia e Feitoria (RS, Brasil), focalizando sua origem, distribuição e mobilidade potencial. Trimestralmente, entre julho/1999 e abril/2000, analisaram-se metais e parâmetros complementares em amostras de água e sedime

Publicado em: 2008

11. Application of electroflocculation technique for the tannery effluent treatment / AplicaÃÃo da tÃcnica de eletro-floculaÃÃo no tratamento de efluentes de curtume

In the present work has been studied the electro-flocculation efficiency on the reduction of organic and inorganic material concentrations such as Chemical Oxygen Demand (COD), turbidity, total solids and metal, mainly chromium, on an untreated tannery effluent using a pair of electrodes. For this purpose, a lab scale Electro-Flocculation (EF) reactor was co

Publicado em: 2008

12. Avaliação da qualidade do couro de bovinos de diferentes sistemas de produção na perspectiva do desenvolvimento local

This study aim to evaluate finishing system (precocious and young steers), sex (female, male) and diet effects on the leather characteristics of crossed bovines. It was used 45 animals, being 25 young steers feedlot system and 20 animals in pastures system, receiving supplement protein-energetic. The animals were slaughtered with 26 months and the leathers p

Publicado em: 2007