Biohydrogen production from renewable agri-waste blend: Optimization using mixer design

R. S. Prakasham*, T. Sathish, P. Brahmaiah, Ch. Subba Rao, Sreenivas Rao Ravella, Phil J. Hobbs

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

53 Citations (Scopus)

Abstract

Biohydrogen from untreated mixed renewable agri-waste using buffalo dung compost is reported. Corn husk (CH) supported 25% higher hydrogen (H(2)) production and showed the maximum value (62.38%) with p value (1.2 x 10(-6)) revealing its significance at individual and interactive level, respectively, compared to ground nut shell (GNS) and rice husk (RH). Augmented-simplex-lattice design experimentation revealed that a partial supplementation of RH or GNS to CH improves H(2) yield. Multiple-linear-regression analysis indicated that a quadratic model (low p = 0.0023, high F value = 35.99 and R(quadratic)(2) = 0.99) was more significant compared to other linear, cubic and special cubic) models. Acetate and butyrate were accounted >80% of the volatile fatty acids (VFAs). A maximum accumulation of 65.78 ml H(2) g(-1) TVS was produced using agri-wastes in the ratio of CH:RH:GNS = 70:16:12. (C) 2009 Published by Elsevier Ltd on behalf of international Association for Hydrogen Energy.

Original languageEnglish
Pages (from-to)6143-6148
Number of pages6
JournalInternational Journal of Hydrogen Energy
Volume34
Issue number15
DOIs
Publication statusPublished - Aug 2009

Keywords

  • Biohydrogen
  • Corn husk
  • BIOLOGICAL HYDROGEN-PRODUCTION
  • SOLID-STATE FERMENTATION
  • Mixture Design
  • Rice husk
  • 1ST STEP
  • WATER
  • ANAEROBIC CULTURES
  • REACTOR
  • ALKALINE PROTEASE PRODUCTION
  • MIXTURE DESIGN
  • Ground nut shell
  • ISOLATED BACILLUS-CIRCULANS
  • Renewable agri-wastes
  • SUBSTRATE

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