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Improved bioconversion of crude glycerol to hydrogen by statistical optimization of media components

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  • Mangayil, Rahul
  • Aho, Tommi
  • Karp, Matti
  • Santala, Ville

Abstract

Bioconversion of crude glycerol to hydrogen has gained importance as it addresses both sustainable energy production and waste disposal issues. Until recently, statistical optimizations of crude glycerol bioconversion to hydrogen have been greatly focused on pure strains. In this study, biohydrogen production from crude glycerol by an enriched microbial culture (predominated with Clostridium species) was improved by statistical optimization of media components. Plackett–Burman design identified MgCl2.6H2O and KCl with negative effect on hydrogen production and selected NH4Cl, K2HPO4 and KH2PO4 as significant variables. Box–Behnken design indicated the optimal region beyond design area and studies were continued by ridge analysis. Central composite face centered design envisaged a maximal hydrogen yield of 1.41 mol-H2/mol-glycerolconsumed at concentrations 4.40 g/L and 2.27 g/L for NH4Cl and KH2PO4 respectively. Confirmation experiment with the optimized media (NH4Cl, 4.40 g/L; K2HPO4, 1.6 g/L; KH2PO4, 2.27 g/L; MgCl2.6H2O, 1.0 g/L; KCl, 1.0 g/L; Na-acetate.3H2O, 1.0 g/L and tryptone, 2.0 g/L) revealed an excellent correlation between predicted and experimental hydrogen yield. Optimization of media components by design of experiments enhanced hydrogen yield by 29%.

Suggested Citation

  • Mangayil, Rahul & Aho, Tommi & Karp, Matti & Santala, Ville, 2015. "Improved bioconversion of crude glycerol to hydrogen by statistical optimization of media components," Renewable Energy, Elsevier, vol. 75(C), pages 583-589.
    • Handle: RePEc:eee:renene:v:75:y:2015:i:c:p:583-589
    DOI: 10.1016/j.renene.2014.10.051
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    References listed on IDEAS

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    1. Jitrwung, Rujira & Verrett, Jonathan & Yargeau, Viviane, 2013. "Optimization of selected salts concentration for improved biohydrogen production from biodiesel-based glycerol using Enterobacter aerogenes," Renewable Energy, Elsevier, vol. 50(C), pages 222-226.
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    1. Arora, Richa & Behera, Shuvashish & Sharma, Nilesh Kumar & Kumar, Sachin, 2017. "Augmentation of ethanol production through statistically designed growth and fermentation medium using novel thermotolerant yeast isolates," Renewable Energy, Elsevier, vol. 109(C), pages 406-421.
    2. Vinayak Laxman Pachapur & Prianka Kutty & Preetika Pachapur & Satinder Kaur Brar & Yann Le Bihan & Rosa Galvez-Cloutier & Gerardo Buelna, 2019. "Seed Pretreatment for Increased Hydrogen Production Using Mixed-Culture Systems with Advantages over Pure-Culture Systems," Energies, MDPI, vol. 12(3), pages 1-26, February.
    3. Pachapur, Vinayak Laxman & Sarma, Saurabh Jyoti & Brar, Satinder Kaur & Le Bihan, Yann & Buelna, Gerardo & Verma, Mausam, 2016. "Surfactant mediated enhanced glycerol uptake and hydrogen production from biodiesel waste using co-culture of Enterobacter aerogenes and Clostridium butyricum," Renewable Energy, Elsevier, vol. 95(C), pages 542-551.
    4. Trchounian, Karen & Trchounian, Armen, 2015. "Hydrogen production from glycerol by Escherichia coli and other bacteria: An overview and perspectives," Applied Energy, Elsevier, vol. 156(C), pages 174-184.
    5. He, Quan (Sophia) & McNutt, Josiah & Yang, Jie, 2017. "Utilization of the residual glycerol from biodiesel production for renewable energy generation," Renewable and Sustainable Energy Reviews, Elsevier, vol. 71(C), pages 63-76.
    6. Azman, Nadia Farhana & Abdeshahian, Peyman & Kadier, Abudukeremu & Shukor, Hafiza & Al-Shorgani, Najeeb Kaid Nasser & Hamid, Aidil Abdul & Kalil, Mohd Sahaid, 2016. "Utilization of palm kernel cake as a renewable feedstock for fermentative hydrogen production," Renewable Energy, Elsevier, vol. 93(C), pages 700-708.
    7. Zhang, Ming & Xue, Wenfeng & Su, Baogen & Bao, Zongbi & Wen, Guangdong & Xing, Huabin & Ren, Qilong, 2017. "Conversion of glycerol into syngas by rotating DC arc plasma," Energy, Elsevier, vol. 123(C), pages 1-8.

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