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Evaluation of different pretreatment methods for preparing hydrogen-producing seed inocula from waste activated sludge

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  • Chang, Sheng
  • Li, Jian-Zheng
  • Liu, Feng

Abstract

Waste activated sludge (WAS) is the most favorable inoculum for dark fermentative hydrogen-producing processes, because it can be collected economically. In order to accelerate the start-up process and develop the efficiency and stability of a hydrogen production system, pretreatment of the seed sludge has been examined to enrich hydrogen-producing bacteria. Six pretreatment methods including acid, base, heat-shock, aeration, chloroform and 2-bromoethanesulfonate (BES) were performed on WAS in batch cultures utilizing glucose as the substrate. The results showed that, at 35 °C and initial pH of 7.0, hydrogen yields of the pretreated sludge (except for BES) were higher than the control test. The pretreatment methods resulted in different distributions of soluble metabolites. Acid pretreatment at pH of 3 was the best among all six pretreatment methods, and the maximal hydrogen yield of 1.51 mol/mol-glucose-consumed and the maximal specific hydrogen production of 22.81 mmolH2/g VSS were observed. The hydrogen yield of the acid treated sludge increased to 1.82 mol/mol-glucose-consumed after five repeated-batch cultivations. It was concluded that acid pretreatment is a simple, economic and effective method for enriching hydrogen-producing bacteria from WAS.

Suggested Citation

  • Chang, Sheng & Li, Jian-Zheng & Liu, Feng, 2011. "Evaluation of different pretreatment methods for preparing hydrogen-producing seed inocula from waste activated sludge," Renewable Energy, Elsevier, vol. 36(5), pages 1517-1522.
    • Handle: RePEc:eee:renene:v:36:y:2011:i:5:p:1517-1522
    DOI: 10.1016/j.renene.2010.11.023
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    Citations

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    Cited by:

    1. Carrillo-Reyes, Julián & Cortés-Carmona, Miguel Angel & Bárcenas-Ruiz, Christian Daniela & Razo-Flores, Elías, 2016. "Cell wash-out enrichment increases the stability and performance of biohydrogen producing packed-bed reactors and the community transition along the operation time," Renewable Energy, Elsevier, vol. 97(C), pages 266-273.
    2. Wong, Y.M. & Juan, J.C. & Ting, Adeline & Wu, T.Y., 2014. "High efficiency bio-hydrogen production from glucose revealed in an inoculum of heat-pretreated landfill leachate sludge," Energy, Elsevier, vol. 72(C), pages 628-635.
    3. Rafieenia, Razieh & Pivato, Alberto & Lavagnolo, Maria Cristina, 2019. "Optimization of hydrogen production from food waste using anaerobic mixed cultures pretreated with waste frying oil," Renewable Energy, Elsevier, vol. 139(C), pages 1077-1085.
    4. Łukajtis, Rafał & Hołowacz, Iwona & Kucharska, Karolina & Glinka, Marta & Rybarczyk, Piotr & Przyjazny, Andrzej & Kamiński, Marian, 2018. "Hydrogen production from biomass using dark fermentation," Renewable and Sustainable Energy Reviews, Elsevier, vol. 91(C), pages 665-694.
    5. Ekwenna, Emeka Boniface & Tabraiz, Shamas & Wang, Yaodong & Roskilly, Anthony, 2023. "Exploring the feasibility of biological hydrogen production using seed sludge pretreated with agro-industrial wastes," Renewable Energy, Elsevier, vol. 215(C).
    6. Wong, Yee Meng & Wu, Ta Yeong & Juan, Joon Ching, 2014. "A review of sustainable hydrogen production using seed sludge via dark fermentation," Renewable and Sustainable Energy Reviews, Elsevier, vol. 34(C), pages 471-482.
    7. Chen, Yi-di & Li, Suping & Ho, Shih-Hsin & Wang, Chengyu & Lin, Yen-Chang & Nagarajan, Dillirani & Chang, Jo-Shu & Ren, Nan-qi, 2018. "Integration of sludge digestion and microalgae cultivation for enhancing bioenergy and biorefinery," Renewable and Sustainable Energy Reviews, Elsevier, vol. 96(C), pages 76-90.

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