Exploration of In Vitro Voltage Production by a Consortium of Chemolithotrophic Microorganisms Using Galena (PbS) as a Sulphur Source

Susana Citlaly Gaucin Gutiérrez, Juan Antonio Rojas-Contreras, David Enrique Zazueta-Álvarez, Efren Delgado, Perla Guadalupe Vázquez Ortega, Hiram Medrano Roldán and Damián Reyes Jáquez ()
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Susana Citlaly Gaucin Gutiérrez: Department of Chemical and Biochemical Engineering, National Technological Institute of Mexico (TecNM)—Durango Institute of Technology (ITD), Felipe Pescador 1830 Ote. Col. Nueva Vizcaya, Victoria de Durango 34080, Mexico
Juan Antonio Rojas-Contreras: Department of Chemical and Biochemical Engineering, National Technological Institute of Mexico (TecNM)—Durango Institute of Technology (ITD), Felipe Pescador 1830 Ote. Col. Nueva Vizcaya, Victoria de Durango 34080, Mexico
David Enrique Zazueta-Álvarez: Department of Environmental Technology Engineering, Polytechnic University of Durango, Carretera Durango-México Km 9.5., Victoria de Durango 34300, Mexico
Efren Delgado: Food Science and Technology, Department of Family and Consumer Sciences, New Mexico State University, P.O. Box 30001, Las Cruces, NM 88003-8001, USA
Perla Guadalupe Vázquez Ortega: Department of Chemical and Biochemical Engineering, National Technological Institute of Mexico (TecNM)—Durango Institute of Technology (ITD), Felipe Pescador 1830 Ote. Col. Nueva Vizcaya, Victoria de Durango 34080, Mexico
Hiram Medrano Roldán: Department of Chemical and Biochemical Engineering, National Technological Institute of Mexico (TecNM)—Durango Institute of Technology (ITD), Felipe Pescador 1830 Ote. Col. Nueva Vizcaya, Victoria de Durango 34080, Mexico
Damián Reyes Jáquez: Department of Chemical and Biochemical Engineering, National Technological Institute of Mexico (TecNM)—Durango Institute of Technology (ITD), Felipe Pescador 1830 Ote. Col. Nueva Vizcaya, Victoria de Durango 34080, Mexico

Clean Technol., 2024, vol. 6, issue 1, 1-15

Abstract: Sulphur plays a fundamental role in the biological processes of chemolithotrophic microorganisms. Due to the redox characteristics of sulphur, microorganisms use it for metabolic processes. Such is the case of the dissimilatory processes in the anaerobic respiration of reducing microorganisms. The production of electrical energy from the metabolism of native microorganisms using sulphur as substrate from inorganic mineral sources in the form of Galena (PbS) was achieved using MR mineral medium with 15% ( w/v ) of PbS mineral concentrate. At 400 h of growth, the highest voltage produced in an experimental unit under anaerobic conditions was 644 mV. The inoculum was composed of microorganisms with spiral morphology, and at the final stages of energy production, the only microorganism identified was Bacillus clausii . This microorganism has not been reported in bioelectrochemical systems, but it has been reported to be present in corrosive environments and reducing anoxic environments.

Keywords: bioelectrochemical systems; sulphur reduction; electroactive consortia (search for similar items in EconPapers)
JEL-codes: Q2 Q3 Q4 Q5 (search for similar items in EconPapers)
Date: 2024
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