Goethite and riboflavin synergistically enhance Cr(VI) reduction by Shewanella oneidensis MR-1

Zheng, Yaqin; Li, Haibo; Yang, Yue; Wu, Bingze; Li, Xinjing; Wang, Kaixuan; Wang, Pengkai; Zhang, Chenxi

doi:10.1007/s10532-022-10010-5

Cited by 8 publications

(1 citation statement)

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“…Changes in the composition of extracellular polymers can lead to changes in the extracellular electron transfer efficiency of Shewanella sp., thereby altering the degradation efficiency of pollutants [ 9 , 15 ]. Zheng et al found that S. oneidensis MR-1 synergistically with goethite and riboflavin (RF) could enhance Cr (VI) bioreduction [ 16 ]. In the Tang et al study, anthraquinone-2-sulfonate (AQDS) was found to significantly promote Fe (III) bioreduction by S. oneidensis MR-1, and different concentrations of aniline were added to the system for degradation.…”

Section: Introductionmentioning

confidence: 99%

Biotransformation of Chlorpyrifos Shewanella oneidensis MR-1 in the Presence of Goethite: Experimental Optimization and Degradation Products

Tang,

Li,

Zhu

et al. 2024

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In this study, the degradation system of Shewanella oneidensis MR-1 and goethite was constructed with chlorpyrifos as the target contaminant. The effects of initial pH, contaminant concentration, and temperature on the removal rate of chlorpyrifos during the degradation process were investigated. The experimental conditions were optimized by response surface methodology with a Box–Behnken design (BBD). The results show that the removal rate of chlorpyrifos is 75.71% at pH = 6.86, an initial concentration of 19.18 mg·L−1, and a temperature of 30.71 °C. LC-MS/MS analyses showed that the degradation products were C4H11O3PS, C7H7Cl3NO4P, C9H11Cl2NO3PS, C7H7Cl3NO3PS, C9H11Cl3NO4P, C4H11O2PS, and C5H2Cl3NO. Presumably, the degradation pathways involved are: enzymatic degradation, hydrolysis, dealkylation, desulfur hydrolysis, and dechlorination. The findings of this study demonstrate the efficacy of the goethite/S. oneidensis MR-1 complex system in the removal of chlorpyrifos from water. Consequently, this research contributes to the establishment of a theoretical framework for the microbial remediation of organophosphorus pesticides in aqueous environments.

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Section: Introductionmentioning

confidence: 99%