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Provedor de dados:  BJM
País:  Brazil
Título:  Bacterial treatment of alkaline cement kiln dust using Bacillus halodurans strain KG1
Autores:  Kunal,
Data:  2016-03-01
Ano:  2016
Palavras-chave:  Alkaliphiles
Alkalinity reduction
Bacillus sp
Cement kiln dust
Resumo:  Abstract This study was conducted to isolate an acid-producing, alkaliphilic bacterium to reduce the alkalinity of cement industry waste (cement kiln dust). Gram-positive isolate KG1 grew well at pH values of 6–12, temperatures of 28–50 °C, and NaCl concentrations of 0–16% and thus was further screened for its potential to reduce the pH of an alkaline medium. Phenotypic characteristics of the KG1 isolate were consistent with those of the genus Bacillus, and the highest level of 16S rRNA gene sequence similarity was found with Bacillus halodurans strain DSM 497 (94.7%). On the basis of its phenotypic characteristics and genotypic distinctiveness from other phylogenetic neighbors belonging to alkaliphilic Bacillus species, the isolated strain was designated B. halodurans strain KG1, with GenBank accession number JQ307184 (= NCIM 5439). Isolate KG1 reduced the alkalinity (by 83.64%) and the chloride content (by 86.96%) of cement kiln dust and showed a potential to be used in the cement industry for a variety of applications.
Tipo:  Info:eu-repo/semantics/article
Idioma:  Inglês
Editor:  Sociedade Brasileira de Microbiologia
Relação:  10.1016/j.bjm.2015.11.001
Formato:  text/html
Fonte:  Brazilian Journal of Microbiology v.47 n.1 2016
Direitos:  info:eu-repo/semantics/openAccess

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