title: Synthetic effect between iron oxide and sulfate mineral on the anaerobic transformation of organic substance.
abstract: Synthetic effect between sulfate minerals (gypsum) and iron oxide (hematite) on the anaerobic transformation of organic substance was investigated in the current study. The results showed that gypsum was completely decomposed while hematite was partially reduced. The mineral phase analysis results showed that FeS and CaCO3 was the major mineralization product. Methane generation process was inhibited and inorganic carbon contents in the precipitates were enhanced compared to the control without hematite and gypsum. The inorganic carbon content increased with the increasing of hematite dosages. Co-addition of sulfate minerals and iron oxide would have a potential application prospect in the carbon sequestration area and reduction of the greenhouse gas release. The results would also reveal the role of inorganic mineral in the global carbon cycle.
authors.affiliation: School of Resources & Environmental Engineering, Hefei University of Technology, Hefei 230009, China. Electronic address: chentianhu@hfut.edu.cn.
authors.forename: Tian-Hu
authors.initials: TH
authors.lastname: Chen
authors.forename: Jin
authors.initials: J
authors.lastname: Wang
authors.forename: Yue-Fei
authors.initials: YF
authors.lastname: Zhou
authors.forename: Zheng-Bo
authors.initials: ZB
authors.lastname: Yue
authors.forename: Qiao-Qin
authors.initials: QQ
authors.lastname: Xie
authors.forename: Min
authors.initials: M
authors.lastname: Pan
mesh_terms: D000693:Anaerobiosis / Q000187:drug effects; D002133:Calcium Sulfate / Q000494:pharmacology*; D002245:Carbon Dioxide / Q000032:analysis; D005290:Ferric Compounds / Q000494:pharmacology*; D006862:Hydrogen Sulfide / Q000032:analysis; D006863:Hydrogen-Ion Concentration / Q000187:drug effects; D007477:Ions; D008697:Methane / Q000032:analysis; D009930:Organic Chemicals / Q000378:metabolism*; D012996:Solutions
chemical_list: D005290:Ferric Compounds; D007477:Ions; D009930:Organic Chemicals; D012996:Solutions; D002245:Carbon Dioxide; C000499:ferric oxide; D008697:Methane; D002133:Calcium Sulfate; D006862:Hydrogen Sulfide
keywords: Anaerobic; Carbon sequestration; Iron oxide; MPB; SEM; SRB; Sulfate minerals; Sulfate-reducing bacteria; TIC; TOC; X-ray diffraction method; XRD; methane-producing bacteria; scanning electron microscopy; sulfate-reducing bacteria; total inorganic carbon; total organic carbon