title: Kinetics of nitrobenzene degradation coupled to indigenous microorganism dissimilatory iron reduction stimulated by emulsified vegetable oil.
abstract: Widespread contamination by nitrobenzene (NB) in sediments and groundwater requires better understanding of the biogeochemical removal process of the pollutant. NB degradation, coupled with dissimilatory iron reduction, is one of the most efficient pollutant removal methods. However, research on NB degradation coupled to indigenous microorganism dissimilatory iron reduction stimulated by electron donors is still experimental. A model for remediation in an actual polluted site does not currently exist. Therefore, in this study, the dynamics was derived from the Michaelis-Menten model (when the mass ratio of emulsified vegetable oil and NB reached the critical value 91:1). The effect of SO42-, NO3-, Ca2+/Mg2+, and the grain size of aquifer media on the dynamics were studied, and the NB degradation dynamic model was then modified based on the most significant factors. Utilizing the model, the remediation time could be calculated in a contaminated site.
authors.affiliation: Key Laboratory of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun 130021, China.
authors.forename: Jun
authors.initials: J
authors.lastname: Dong
authors.affiliation: Key Laboratory of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun 130021, China. Electronic address: dongjun@jlu.edu.cn.
authors.forename: Linjie
authors.initials: L
authors.lastname: Ding
authors.affiliation: Key Laboratory of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun 130021, China. Electronic address: chizifang@jlu.edu.cn.
authors.forename: Zifang
authors.initials: Z
authors.lastname: Chi
authors.affiliation: Exploration Unit Of North China Geological Exploration Bureau, Tianjin 065201, China.
authors.forename: Jiansen
authors.initials: J
authors.lastname: Lei
authors.affiliation: Shenyang Academy of Environmental Sciences, Shenyang 110000, China.
authors.forename: Yan
authors.initials: Y
authors.lastname: Su
mesh_terms: D001673:Biodegradation, Environmental; D060587:Groundwater / Q000737:chemistry / Q000382:microbiology; D007501:Iron / Q000737:chemistry; D007700:Kinetics; D009578:Nitrobenzenes / Q000378:metabolism*; D010938:Plant Oils; D014871:Water Microbiology; D014874:Water Pollutants, Chemical / Q000378:metabolism*
chemical_list: D009578:Nitrobenzenes; D010938:Plant Oils; D014874:Water Pollutants, Chemical; D007501:Iron; C036077:nitrobenzene
keywords: Emulsified vegetable oil; Groundwater; Iron reduction; Nitrobenzene degradation model; Site remediation