Hydrogen production from anaerobic co-digestion of coffee mucilage and swine manure
type: Dataset
description: This research investigates an alternative approach to the use of two wastes from agricultural and livestock activities developed in Colombia. Swinemanure and coffee mucilage were used to evaluatean anaerobic co-digestion process focused on hydrogen production. In addition, the aims covered a further stage in order to close the cycle of the both wastes. The thesis was conducted in three phases : 1. Evaluation of hydrogen production from the co-digestion of coffee mucilage and swine manure during dark fermentation ; 2. Trends over retention time through the monitoring of microorganisms by quantitative PCR and other parameters incluiding pH, oxidation reduction potential, and hydrogen partial pressure ; 3. Treatment of the effluent from hydrogen production process by anaerobic digestion with methane production. The experimental results showed that mixtures of both wastes are able to produce hydrogen. A substrate ratio of 5:5, which was associated with a C/N ratio of 53, was suitable for hydrogen production. Moreover, the stability and optimization of the process were evaluated by increasing the influent organic load rate. This wasthe best experimental condition in terms of average cumulative hydrogen volume, production rate and yield which were 2661 NmL, 760 NmLH2/Lwd and 43 NmL H2/gCOD, respectively. This performance was preserved over time, which was verified through the repetitive batch cultivation during 43 days. Two trends were identified over retention time associated with similar cumulative hydrogen, but with differences in lag-phase time and hydrogen production rate. T.thermosaccharolyticum was the dominating genus during the short trend related to the shortest lag phase time and highest hydrogen production rate. The long trends were associated with a decrease of Bacillus sp. concentration at the beginning of the experiments and with the possible competition for soluble substrates between T.thermosaccharolyticum and Clostridium sp. The third phase showed that t…
identifier: NNT: 2012EMNA0127
issued: 2026-05-15T01:18:58.099258
language: en
modified: 2026-05-15T01:18:58.099266
contact point: Organization
  fn: CCSD
keyword: hydrogen-producers
keyword: hydrogen-production
keyword: infoeu-reposemanticsdoctoralthesis
keyword: methane
keyword: production-dhydrogene
keyword: spigprocengineering-sciences-physicschemical-and-process-engineering
keyword: theses
keyword: valorisation-des-dechets
keyword: waste-treatment
landing page: https://theses.hal.science/tel-00778944

Hydrogen production from anaerobic co-digestion of coffee mucilage and swine manure
type: Distribution
format: HTML
issued: 2026-05-15T01:18:58.115462
modified: 2026-05-15T01:18:58.060235
access URL: https://theses.hal.science/tel-00778944

test_moissonnage_selune
type: Agent