ArticleEnvironmental science and pollution research international2018
Co-digestion of sewage sludge with crude or pretreated glycerol to increase biogas production.
Article in Environmental science and pollution research international, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed, 33 citations in OpenAlex.
- The Use of Crude Glycerol as a Co-Substrate for Anaerobic Digestion.Molecules (Basel, Switzerland) · 2025Review
- Process intensification of anaerobic digestion for biohydrogen and methane production from crude glycerol and dairy wastewater using cavitation techniques.RSC advances · 2025Article
- A comprehensive study on anaerobic digestion of organic solid waste: A review on configurations, operating parameters, techno-economic analysis and current trends.Biotechnology notes (Amsterdam, Netherlands) · 2024Review
- Anaerobic Digestion for Producing Renewable Energy-The Evolution of This Technology in a New Uncertain Scenario.Entropy (Basel, Switzerland) · 2021Review
- Development of a green one-step neutralization process for valorization of crude glycerol obtained from biodiesel.Environmental science and pollution research international · 2020Article
- Evaluation of 1,3-propanediol production by twoCitrobacter freundiistrains using crude glycerol and soybean cake hydrolysate.Environmental science and pollution research international · 2019Article
- Revealing the correlation of biomethane generation, DOM fluorescence, and microbial community in the mesophilic co-digestion of chicken manure and sheep manure at different mixture ratio.Environmental science and pollution research international · 2019Article
Corrections and comments
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Authors and funding
3 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Anaerobic co-digestion of sewage sludge and glycerol from the biodiesel industry was evaluated in three experimental stages. In the first step, the addition of higher proportions of crude glycerol (5-20% v/v) to the sludge was evaluated, and the results showed a marked decrease in pH and inhibition of methane production. In the second step, co-digestion of sludge with either a lower proportion (1% v/v) of crude glycerol or glycerol pretreated to remove salinity resulted in volatile acid accumulation and low methane production. The accumulation of volatile acids due to the rapid degradation of glycerol in the mixture was more detrimental to methanogenesis than the salinity of the crude glycerol. In the third step, much lower amounts of crude glycerol were added to the sludge (0.3, 0.5, 0.7% v/v), resulting in buffering of the reaction medium and higher methane production than in the control (pure sludge). The best condition for co-digestion was with the addition of 0.5% (v/v) crude glycerol to the sewage sludge, which equals 0.6 g glycerol/g volatile solids applied. Under this condition, the specific methane production (mL CH
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