Akinpelu Enoch A, Ntwampe Seteno K O, Fosso-Kankeu Elvis, Nchu Felix, Angadam Justine O
Bioresource Engineering Research Group (BioERG), Cape Peninsula University of Technology, Cape Town, 8000, South Africa.
Department of Horticultural Sciences, Cape Peninsula University of Technology, Bellville Campus, Symphony Way, PO Box 1906, Bellville 7535, South Africa.
Heliyon. 2021 Jun 7;7(6):e07241. doi: 10.1016/j.heliyon.2021.e07241. eCollection 2021 Jun.
A consortium of microbial community was used for the treatment of acid mine drainage wastewater laden with sulphate and heavy metals. The wastewater was treated in an anaerobic continuously stirred tank bioreactor. The microbial community activity increased the pH from 5.6 to 6.5, and improved sulphate removal up to 85% from an initial sulphate concentration of 8080 mg /L in a continuous mode, following enrichment for 21 d. The maximum heavy metal removal percentage was observed for Cd (98%), Al (97%), Mn (95%), Pb (94%), Sr (94%) and Cu (91%). The microbial community showed synergy between strictly anaerobic and facultative sp., which were responsible for the bioreactor performance. The biochemical reaction indicated the microbial community has a wider range of substrates dominated by metallo-aminopeptidases.
一个微生物群落联合体被用于处理富含硫酸盐和重金属的酸性矿山排水废水。废水在厌氧连续搅拌槽式生物反应器中进行处理。在连续模式下，经过21天的富集培养，微生物群落活性将pH值从5.6提高到6.5，并将硫酸盐去除率提高到85%，初始硫酸盐浓度为8080 mg/L。观察到对镉（98%）、铝（97%）、锰（95%）、铅（94%）、锶（94%）和铜（91%）的重金属去除率最高。该微生物群落显示出严格厌氧菌和兼性菌之间的协同作用，这对生物反应器的性能起着重要作用。生化反应表明，该微生物群落具有更广泛的以金属氨肽酶为主的底物。
