title: Aluminum and sulphate removal by a highly Al-resistant dissimilatory sulphate-reducing bacteria community.
abstract: A highly Al-resistant dissimilatory sulphate-reducing bacteria community was isolated from sludge of the wetland of Urgeiriça mine (community W). This community showed excellent sulphate removal at the presence of Al³⁺. After 27 days of incubation, 73, 86 and 81% of sulphate was removed in the presence of 0.48, 0.90 and 1.30 mM of Al³⁺, respectively. Moreover, Al³⁺ was simultaneously removed: 55, 85 and 78% of metal was removed in the presence of 0.48, 0.90 and 1.30 mM of Al³⁺, respectively. The dissociation of aluminium-lactate soluble complexes due to lactate consumption by dissimilatory sulphate-reducing bacteria can be responsible for aluminum removal, which probably precipitates as insoluble aluminium hydroxide. Phylogenetic analysis of 16S rRNA gene showed that this community was mainly composed by bacteria closely related to Desulfovibrio desulfuricans. However, bacteria affiliated to Proteus and Ralstonia were also present in the community.
authors.affiliation: Departamento de Química e Farmácia, Faculdade de Ciências e de Tecnologia, Centro de Ciências do Mar-CCMAR, Universidade do Algarve, Campus de Gambelas, 8005-139 Faro, Portugal.
authors.forename: Mónica
authors.initials: M
authors.lastname: Martins
authors.forename: Rita
authors.initials: R
authors.lastname: Taborda
authors.forename: Gonçalo
authors.initials: G
authors.lastname: Silva
authors.forename: Ana
authors.initials: A
authors.lastname: Assunção
authors.forename: António Pedro
authors.initials: AP
authors.lastname: Matos
authors.forename: Maria Clara
authors.initials: MC
authors.lastname: Costa
mesh_terms: D000535:Aluminum / Q000302:isolation & purification* / Q000633:toxicity*; D001419:Bacteria / Q000166:cytology / Q000235:genetics / Q000254:growth & development / Q000378:metabolism*; D001673:Biodegradation, Environmental / Q000187:drug effects; D011232:Chemical Precipitation; D059013:Microbial Consortia / Q000187:drug effects; D008969:Molecular Sequence Data; D010084:Oxidation-Reduction / Q000187:drug effects; D010802:Phylogeny; D012150:Polymorphism, Restriction Fragment Length; D013431:Sulfates / Q000302:isolation & purification* / Q000378:metabolism*; D013440:Sulfides / Q000633:toxicity; D014865:Waste Disposal, Fluid
chemical_list: D013431:Sulfates; D013440:Sulfides; D000535:Aluminum