Degradation of dissolved sulfide in water using multi-hole dielectric barrier discharge

Geon Woo Yang; Heejae Lee; Kangil Kim; Se Min Chun; Sang Yun Jeong; Jinmu Jung; Yong Cheol Hong

doi:10.1016/j.chemosphere.2024.141687

Degradation of dissolved sulfide in water using multi-hole dielectric barrier discharge

Chemosphere. 2024 Apr:354:141687. doi: 10.1016/j.chemosphere.2024.141687. Epub 2024 Mar 12.

Authors

Geon Woo Yang¹, Heejae Lee², Kangil Kim³, Se Min Chun², Sang Yun Jeong⁴, Jinmu Jung⁵, Yong Cheol Hong⁶

Affiliations

¹ Institute of Plasma Technology, Korea Institute of Fusion Energy, 37 Dongjansan-ro, Gunsan, Jeollabuk-do, 54004, Republic of Korea; Department of Nano-Bio Mechanical System Engineering, College of Engineering, Jeonbuk National University, 567 Baekje-daero, Deokjin-gu, Jeonju, 54896, Republic of Korea.
² Institute of Plasma Technology, Korea Institute of Fusion Energy, 37 Dongjansan-ro, Gunsan, Jeollabuk-do, 54004, Republic of Korea; Department of Applied Plasma and Quantum Beam Engineering, Jeonbuk National University, 567 Baekje-daero, Deokjin-gu, Jeonju, 54896, Republic of Korea.
³ Institute of Plasma Technology, Korea Institute of Fusion Energy, 37 Dongjansan-ro, Gunsan, Jeollabuk-do, 54004, Republic of Korea; KFE-school, University of Science and Technology, 217, Gajeong-ro, Yuseong-gu, Daejoeon, 34113, Republic of Korea.
⁴ Institute of Plasma Technology, Korea Institute of Fusion Energy, 37 Dongjansan-ro, Gunsan, Jeollabuk-do, 54004, Republic of Korea.
⁵ Department of Nano-Bio Mechanical System Engineering, College of Engineering, Jeonbuk National University, 567 Baekje-daero, Deokjin-gu, Jeonju, 54896, Republic of Korea.
⁶ Institute of Plasma Technology, Korea Institute of Fusion Energy, 37 Dongjansan-ro, Gunsan, Jeollabuk-do, 54004, Republic of Korea; KFE-school, University of Science and Technology, 217, Gajeong-ro, Yuseong-gu, Daejoeon, 34113, Republic of Korea. Electronic address: ychong@kfe.re.kr.

PMID: 38484990
DOI: 10.1016/j.chemosphere.2024.141687

Abstract

Biogas obtained from livestock manure is used as fuel for solid oxide fuel cells. Although H₂S is a typical biogas, it is a fatal disadvantage for fuel-cell power generation and, thus, must be removed. In this study, we proposed an effective method for sulfide removal from water using a multi-hole dielectric barrier discharge (DBD) system. In this system, active species, such as ozone, ultraviolet rays, hydroxyl radicals, and hydrogen peroxide, were simultaneously generated. Under optimal conditions, dissolved sulfide (initial concentration: 120 mg/L) was completely degraded within 10 min in air plasma and 6 min in oxygen plasma. Changes in the physical properties of the sulfide-treated water were confirmed by measuring the pH, oxidation-reduction potential, and dissolved oxygen. Results of the by-product analysis showed that sulfide was converted into sulfate by reacting with a large amount of ozone, and the active species were emitted from the multi-hole DBD system. In summary, multi-hole DBD technology has demonstrated merit as a water-contaminant purification technology and for the removal of dissolved sulfide.

Keywords: Dissolved sulfide; Multi-hole dielectric barrier discharge; Plasma-based advanced oxidation process; Purification; Water pollutant.

MeSH terms

Biofuels
Oxygen / analysis
Ozone* / chemistry
Water
Water Pollutants, Chemical* / analysis

Substances

Water
Biofuels
Water Pollutants, Chemical
Oxygen
Ozone