ArticleEnvironmental science and ecotechnology2023
Carbon source recovery from waste sludge reduces greenhouse gas emissions in a pilot-scale industrial wastewater treatment plant.
Article in Environmental science and ecotechnology, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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4 citing papers in PubMed.
- Causal direct drivers of greenhouse gas emissions in 40,722 wastewater treatment plants in China.Environmental science and ecotechnology · 2026Article
- Measurement-based assessment reveals key drivers and mitigation potential of methane emissions from China's wastewater treatment.Science advances · 2026Article
- Co-utilization of corncob hydrolysate and fermentation wastewater for eicosapentaenoic acid production by Schizochytrium sp.Biotechnology for biofuels and bioproducts · 2025Article
- Studies on the treatment of anaerobically digested sludge by white-rot fungi: evaluation of the effect of Phanerochaete chrysosporium and Trametes versicolor.Microbial cell factories · 2025Article
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10 authors.
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Abstract
Carbon cycle regulation and greenhouse gas (GHG) emission abatement within wastewater treatment plants (WWTPs) can theoretically improve sustainability. Currently, however, large amounts of external carbon sources used for deep nitrogen removal and waste sludge disposal aggravate the carbon footprint of most WWTPs. In this pilot-scale study, considerable carbon was preliminarily recovered from primary sludge (PS) through short-term (five days) acidogenic fermentation and subsequently utilized on-site for denitrification in a wool processing industrial WWTP. The recovered sludge-derived carbon sources were excellent electron donors that could be used as additional carbon supplements for commercial glucose to enhance denitrification. Additionally, improvements in carbon and nitrogen flow further contributed to GHG emission abatement. Overall, a 9.1% reduction in sludge volatile solids was achieved from carbon recovery, which offset 57.4% of external carbon sources, and the indirect GHG emissions of the target industrial WWTP were reduced by 8.05%. This study demonstrates that optimizing the allocation of carbon mass flow within a WWTP has numerous benefits.
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