Electrochemical removal of hydrogen sulfide from swine manure

Yuchuan Wang; Hongjian Lin; Bo Hu

doi:10.1016/j.cej.2018.08.171

Electrochemical removal of hydrogen sulfide from swine manure

Yuchuan Wang, Hongjian Lin, Bo Hu

Bioproducts and Biosystems Engineering

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

20 Scopus citations

Abstract

Hydrogen sulfide (H₂S) produced in swine manure storage is a safety hazard to both humans and animals. An electrochemical treatment method based on low carbon steel electrodes was developed to reduce aqueous sulfide and emitted H₂S concentration from manure storage. At the selected condition (applied voltage of 0.7 V, immersed electrode surface area of 19 cm²/L, initial sulfide concentration around 6 mM, and operating temperature of 19 °C), the process achieved an average sulfide removal rate of 0.97 mg S²⁻/(cm²·day) for the zero order kinetics model, and a rate coefficient of 0.267/day for the first order kinetics model. The electrical charge consumption was 5.26 C/mg S²⁻. With the removal of over 90% (95% maximum) of sulfide and H₂S, the risk of massive release of H₂S can be significantly reduced. The installation of this treatment technology may reduce the risk of manure pump-out in terms of H₂S over-exposure and may be applied in similar circumstances where H₂S poses threats to health and life.

Original language	English (US)
Pages (from-to)	210-218
Number of pages	9
Journal	Chemical Engineering Journal
Volume	356
DOIs	https://doi.org/10.1016/j.cej.2018.08.171
State	Published - Jan 15 2019

Bibliographical note

Funding Information:
The authors greatly appreciate the funding supports from the Minnesota Rapid Agricultural Response Fund program (RARF) for this research. The authors also appreciate the assistance of manure collection received from St. Paul Swine Research Facility at University of Minnesota Twin Cities.

Publisher Copyright:
© 2018 Elsevier B.V.

Keywords

Anaerobic degradation
Electrochemical precipitation
Hydrogen sulfide
Manure management
Removal kinetics

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title = "Electrochemical removal of hydrogen sulfide from swine manure",

abstract = "Hydrogen sulfide (H2S) produced in swine manure storage is a safety hazard to both humans and animals. An electrochemical treatment method based on low carbon steel electrodes was developed to reduce aqueous sulfide and emitted H2S concentration from manure storage. At the selected condition (applied voltage of 0.7 V, immersed electrode surface area of 19 cm2/L, initial sulfide concentration around 6 mM, and operating temperature of 19 °C), the process achieved an average sulfide removal rate of 0.97 mg S2−/(cm2·day) for the zero order kinetics model, and a rate coefficient of 0.267/day for the first order kinetics model. The electrical charge consumption was 5.26 C/mg S2−. With the removal of over 90% (95% maximum) of sulfide and H2S, the risk of massive release of H2S can be significantly reduced. The installation of this treatment technology may reduce the risk of manure pump-out in terms of H2S over-exposure and may be applied in similar circumstances where H2S poses threats to health and life.",

keywords = "Anaerobic degradation, Electrochemical precipitation, Hydrogen sulfide, Manure management, Removal kinetics",

author = "Yuchuan Wang and Hongjian Lin and Bo Hu",

note = "Funding Information: The authors greatly appreciate the funding supports from the Minnesota Rapid Agricultural Response Fund program (RARF) for this research. The authors also appreciate the assistance of manure collection received from St. Paul Swine Research Facility at University of Minnesota Twin Cities. Publisher Copyright: {\textcopyright} 2018 Elsevier B.V.",

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doi = "10.1016/j.cej.2018.08.171",

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T1 - Electrochemical removal of hydrogen sulfide from swine manure

AU - Wang, Yuchuan

AU - Lin, Hongjian

AU - Hu, Bo

N1 - Funding Information: The authors greatly appreciate the funding supports from the Minnesota Rapid Agricultural Response Fund program (RARF) for this research. The authors also appreciate the assistance of manure collection received from St. Paul Swine Research Facility at University of Minnesota Twin Cities. Publisher Copyright: © 2018 Elsevier B.V.

PY - 2019/1/15

Y1 - 2019/1/15

N2 - Hydrogen sulfide (H2S) produced in swine manure storage is a safety hazard to both humans and animals. An electrochemical treatment method based on low carbon steel electrodes was developed to reduce aqueous sulfide and emitted H2S concentration from manure storage. At the selected condition (applied voltage of 0.7 V, immersed electrode surface area of 19 cm2/L, initial sulfide concentration around 6 mM, and operating temperature of 19 °C), the process achieved an average sulfide removal rate of 0.97 mg S2−/(cm2·day) for the zero order kinetics model, and a rate coefficient of 0.267/day for the first order kinetics model. The electrical charge consumption was 5.26 C/mg S2−. With the removal of over 90% (95% maximum) of sulfide and H2S, the risk of massive release of H2S can be significantly reduced. The installation of this treatment technology may reduce the risk of manure pump-out in terms of H2S over-exposure and may be applied in similar circumstances where H2S poses threats to health and life.

AB - Hydrogen sulfide (H2S) produced in swine manure storage is a safety hazard to both humans and animals. An electrochemical treatment method based on low carbon steel electrodes was developed to reduce aqueous sulfide and emitted H2S concentration from manure storage. At the selected condition (applied voltage of 0.7 V, immersed electrode surface area of 19 cm2/L, initial sulfide concentration around 6 mM, and operating temperature of 19 °C), the process achieved an average sulfide removal rate of 0.97 mg S2−/(cm2·day) for the zero order kinetics model, and a rate coefficient of 0.267/day for the first order kinetics model. The electrical charge consumption was 5.26 C/mg S2−. With the removal of over 90% (95% maximum) of sulfide and H2S, the risk of massive release of H2S can be significantly reduced. The installation of this treatment technology may reduce the risk of manure pump-out in terms of H2S over-exposure and may be applied in similar circumstances where H2S poses threats to health and life.

KW - Anaerobic degradation

KW - Electrochemical precipitation

KW - Hydrogen sulfide

KW - Manure management

KW - Removal kinetics

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Electrochemical removal of hydrogen sulfide from swine manure

Abstract

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Keywords

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