Microbial-induced remediation of Zn2+ pollution based on the capture and utilization of carbon dioxide
Electron. j. biotechnol
;
19(1): 29-32, Jan. 2016. ilus
Artigo
em Inglês
| LILACS
| ID: lil-781167
ABSTRACT
Background: Microbial-induced remediation of Zn2+ pollution based on the capture and utilization of carbon dioxide was investigated. In this study, carbon dioxide was absorbed and transformed into carbonate ions under the enzymatic action of Paenibacillus mucilaginosus, which was being utilized to mineralize Zn2+. Results: The compositional and morphological properties of the precipitations were studied using Fourier transform infrared spectroscopy (FTIR), energy dispersive X-ray spectroscopy (EDS), X-ray diffraction (XRD), and scanning electron microscopy (SEM). The thermal properties of the precipitates were investigated by thermogravimetric-differential scanning calorimetry (TG-DSC). The FTIR results confirmed that the functional groups of the precipitates were CO3² − and OH−. The XRD and EDS patterns showed that basic zinc carbonate could be obtained successfully by Microbial-induced remediation. The SEM micrographs demonstrated that the precipitates were in the nanometer range with sizes of 100-200 nm and were sphere-like in shape. Conclusions: The TG-DSC results showed that weight loss of the precipitates occurred around 253°C. The FTIR and TG-DSC results were in accord with the XRD and EDS results and proved again that the precipitates were basic zinc carbonate. This work thus demonstrates a new method for processing Zn2+ pollution based on the utilization of carbon dioxide.
Texto completo:
DisponíveL
Índice:
LILACS (Américas)
Assunto principal:
Zinco
/
Dióxido de Carbono
/
Recuperação e Remediação Ambiental
/
Paenibacillus
Idioma:
Inglês
Revista:
Electron. j. biotechnol
Assunto da revista:
Biotecnologia
Ano de publicação:
2016
Tipo de documento:
Artigo
País de afiliação:
China
Instituição/País de afiliação:
Southeast University/CN
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