Sulfate-reduction, sulfide-oxidation and elemental sulfur bioreduction process: Modeling and experimental validation

Xijun Xu; Chuan Chen; Duu Jong Lee; Aijie Wang; Wanqian Guo; Xu Zhou; Hongliang Guo; Ye Yuan; Nanqi Ren; Jo Shu Chang

doi:10.1016/j.biortech.2013.07.113

Sulfate-reduction, sulfide-oxidation and elemental sulfur bioreduction process: Modeling and experimental validation

Xijun Xu, Chuan Chen, Duu Jong Lee, Aijie Wang, Wanqian Guo, Xu Zhou, Hongliang Guo, Ye Yuan, Nanqi Ren, Jo Shu Chang

Department of Chemical Engineering

Research output: Contribution to journal › Article › peer-review

54 Citations (Scopus)

Abstract

This study describes the sulfate-reducing (SR) and sulfide-oxidizing (SO) process using Monod-type model with best-fit model parameters both being reported and estimated. The molar ratio of oxygen to sulfide (R_OS) significantly affects the kinetics of the SR+SO process. The S⁰ is produced by SO step but is later consumed by sulfur-reducing bacteria to lead to "rebound" in sulfide concentration. The model correlated well all experimental data in the present SR+SO tests and the validity of this approach was confirmed by independent sulfur bioreduction tests in four denitrifying sulfide removal (DSR) systems. Modeling results confirm that the ratio of oxygen to sulfide is a key factor for controlling S⁰ formation and its bioreduction. Overlooking S⁰ bioreduction step would overestimate the yield of S⁰.

Original language	English
Pages (from-to)	202-211
Number of pages	10
Journal	Bioresource technology
Volume	147
DOIs	https://doi.org/10.1016/j.biortech.2013.07.113
Publication status	Published - 2013 Nov

All Science Journal Classification (ASJC) codes

Bioengineering
Environmental Engineering
Renewable Energy, Sustainability and the Environment
Waste Management and Disposal

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This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.biortech.2013.07.113

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title = "Sulfate-reduction, sulfide-oxidation and elemental sulfur bioreduction process: Modeling and experimental validation",

abstract = "This study describes the sulfate-reducing (SR) and sulfide-oxidizing (SO) process using Monod-type model with best-fit model parameters both being reported and estimated. The molar ratio of oxygen to sulfide (ROS) significantly affects the kinetics of the SR+SO process. The S0 is produced by SO step but is later consumed by sulfur-reducing bacteria to lead to {"}rebound{"} in sulfide concentration. The model correlated well all experimental data in the present SR+SO tests and the validity of this approach was confirmed by independent sulfur bioreduction tests in four denitrifying sulfide removal (DSR) systems. Modeling results confirm that the ratio of oxygen to sulfide is a key factor for controlling S0 formation and its bioreduction. Overlooking S0 bioreduction step would overestimate the yield of S0.",

author = "Xijun Xu and Chuan Chen and Lee, {Duu Jong} and Aijie Wang and Wanqian Guo and Xu Zhou and Hongliang Guo and Ye Yuan and Nanqi Ren and Chang, {Jo Shu}",

note = "Funding Information: This research was supported by the National Natural Science Foundation of China (Grant No. 51176037 ), National High-tech R&D Program of China (863 Program, Grant No. 2011AA060904 ), Project 51121062 (National Creative Research Groups), the State Key Laboratory of Urban Water Resource and Environment ( 2012DX06 ) and NSC 102-3113-P-110-016 .",

year = "2013",

month = nov,

doi = "10.1016/j.biortech.2013.07.113",

language = "English",

volume = "147",

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T1 - Sulfate-reduction, sulfide-oxidation and elemental sulfur bioreduction process

T2 - Modeling and experimental validation

AU - Xu, Xijun

AU - Chen, Chuan

AU - Lee, Duu Jong

AU - Wang, Aijie

AU - Guo, Wanqian

AU - Zhou, Xu

AU - Guo, Hongliang

AU - Yuan, Ye

AU - Ren, Nanqi

AU - Chang, Jo Shu

N1 - Funding Information: This research was supported by the National Natural Science Foundation of China (Grant No. 51176037 ), National High-tech R&D Program of China (863 Program, Grant No. 2011AA060904 ), Project 51121062 (National Creative Research Groups), the State Key Laboratory of Urban Water Resource and Environment ( 2012DX06 ) and NSC 102-3113-P-110-016 .

PY - 2013/11

Y1 - 2013/11

N2 - This study describes the sulfate-reducing (SR) and sulfide-oxidizing (SO) process using Monod-type model with best-fit model parameters both being reported and estimated. The molar ratio of oxygen to sulfide (ROS) significantly affects the kinetics of the SR+SO process. The S0 is produced by SO step but is later consumed by sulfur-reducing bacteria to lead to "rebound" in sulfide concentration. The model correlated well all experimental data in the present SR+SO tests and the validity of this approach was confirmed by independent sulfur bioreduction tests in four denitrifying sulfide removal (DSR) systems. Modeling results confirm that the ratio of oxygen to sulfide is a key factor for controlling S0 formation and its bioreduction. Overlooking S0 bioreduction step would overestimate the yield of S0.

AB - This study describes the sulfate-reducing (SR) and sulfide-oxidizing (SO) process using Monod-type model with best-fit model parameters both being reported and estimated. The molar ratio of oxygen to sulfide (ROS) significantly affects the kinetics of the SR+SO process. The S0 is produced by SO step but is later consumed by sulfur-reducing bacteria to lead to "rebound" in sulfide concentration. The model correlated well all experimental data in the present SR+SO tests and the validity of this approach was confirmed by independent sulfur bioreduction tests in four denitrifying sulfide removal (DSR) systems. Modeling results confirm that the ratio of oxygen to sulfide is a key factor for controlling S0 formation and its bioreduction. Overlooking S0 bioreduction step would overestimate the yield of S0.

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Sulfate-reduction, sulfide-oxidation and elemental sulfur bioreduction process: Modeling and experimental validation

Abstract

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