oai-hal-tel-00995326v1
type: Dataset
contact point: Organization
  fn: CCSD
keyword: methanisation
keyword: rice-straw
keyword: pilote-industriel
keyword: biogaz
keyword: biogas
keyword: theses
keyword: infoeu-reposemanticsdoctoralthesis
keyword: paille-de-riz
keyword: mesophilic-farm-scale
keyword: energy-production
keyword: sdustusciences-of-the-universe-physicsearth-sciences
keyword: anaerobic-digestion
keyword: production-denergie
landing page: https://theses.hal.science/tel-00995326
description: The research describes an optimized waste-to-energy technology that utilizes agricultural residues for renewable energy, while reducing global methane emissions and maintaining food security. Laboratory-, pilot- and farm-scale anaerobic batch digesters were evaluated to enhance methane production from the anaerobic digestion of untreated rice straw in dry conditions using a novel co-digestion approach. An existing farm-scale biogas plant loaded with rice straw and piggery wastewater produced 295 MWh in a 422-day digestion cycle. The long acclimation period (approximately 200 days) and low biogas yield (181 LCH4/kgVS) could be enhanced by adding anaerobic sludge from the pulp and paper mill treatment process. In a laboratory setting, the addition of the sludge resulted in a specific methane yield of 335 LCH4/kgVS within 92 days. Hydrolysis of the straw was accelerated, and stable conditions were observed in terms of pH, alkalinity and nutrients. Similar improvements were demonstrated in pilot-scale digesters (1 m3) – a specific methane yield of 231 LCH4/kgVS was achieved in a 93-day digestion cycle with the sludge compared to 189 days without the sludge. Insufficient mixing within the pilot-scale system caused lower overall methane yields than those obtained in the laboratory-scale digesters. If sufficient mixing and mesophilic conditions are maintained within the farm-scale system, the co-digestion of rice straw with pig wastewater and paper mill sludge (wet weight ratio of 1:1.25:0.5) has the potential to reduce the retention time to three months (versus 422 days) and increase methane yields to over 300 LCH4/kgVS
identifier: NNT: 2013PEST1185
issued: 2026-05-05T10:26:18.723201
language: en
modified: 2026-05-05T10:26:18.723205
title: Enhancing the methane production from untreated rice straw using an anaerobic co-digestion approach with piggery wastewater and pulp and paper mill sludge to optimize energy conversion in farm-scale biogas plants

https://rec.harvest-normandie.data4citizen.com/dataset/oai-hal-tel-00995326v1/resource/03e8b1c4-ebc9-433c-96ed-57664f09eab8
type: Distribution
access URL: https://theses.hal.science/tel-00995326
format: HTML
issued: 2026-05-05T10:26:18.731377
modified: 2026-05-05T10:26:18.710396
title: Enhancing the methane production from untreated rice straw using an anaerobic co-digestion approach with piggery wastewater and pulp and paper mill sludge to optimize energy conversion in farm-scale biogas plants

test_moissonnage_selune
type: Agent