Electrochemical and bioelectrochemical sulphide removal: A review

The increased demand for energy worldwide and the focus on the green shift have raised interest in renewable energy sources such as biogas. During biogas production, sulphide (H 2 S, HS − and S 2− ) is generated as a byproduct. Due to its corrosive, toxic, odorous, and inhibitory nature, sulphide is...

Full description

Saved in:
Bibliographic Details
Published in:Reviews in environmental science and biotechnology 2024-12, Vol.23 (4), p.989-1014
Main Authors: Karlsen, Vibeke B., Dinamarca, Carlos
Format: Article
Language:English
Subjects:
Alternative energy sources
Anodizing
Atmospheric Protection/Air Quality Control/Air Pollution
Biogas
Biological oxidation
Clean energy
Conductivity
Earth and Environmental Science
Electrochemistry
Electrode materials
Environment
Environmental Engineering/Biotechnology
Hydrogen sulfide
Methane
Microbiology
Oxidation
Parameter modification
Pollutant removal
Reactor design
Reactors
Renewable energy sources
Review Paper
Reviews
Sulfides
Temperature
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The increased demand for energy worldwide and the focus on the green shift have raised interest in renewable energy sources such as biogas. During biogas production, sulphide (H 2 S, HS − and S 2− ) is generated as a byproduct. Due to its corrosive, toxic, odorous, and inhibitory nature, sulphide is problematic in various industrial processes. Therefore, several techniques have been developed to remove sulphide from liquid and gaseous streams, including chemical absorption, chemical dosing, bioscrubbers, and biological oxidation. This review aims to elucidate electrochemical and bioelectrochemical sulphide removal methods, which are gaining increasing interest as possible supplements to existing technologies. In these systems, the sulphide oxidation rate is affected by the reactor design and operational parameters, including electrode materials, anodic potential, pH, temperature and conductivity. Anodic and bioanodic materials are highlighted here, focusing on recent material developments and surface modification techniques. Moreover, the review focuses on sulphide generation and inhibition in biogas production processes and introduces the prospect of removing sulphide and producing methane in one single bioelectrochemical reactor. This could introduce BESs for combined biogas upgrading and cleaning, thereby increasing the methane content and removing pollutants such as sulphide and ammonia in one unit.
ISSN:1569-1705
1572-9826
DOI:10.1007/s11157-024-09708-0