Surfactant assisted microwave disintegration of green marine macroalgae for enhanced anaerobic biodegradability and biomethane recovery

J. Rajesh Banu, K. Tamilarasan, Soon Woong Chang, D. Duc Nguyen, Vinoth Kumar Ponnusamy, Gopalakrishnan Kumar

Research output: Contribution to journalArticlepeer-review

Abstract

In this research work, an effort was done to improve the liquefaction potential of green marine macroalgae (GMM) through surfactant induced microwave pretreatment (SMP) in an energy efficient aspect. By coupling the surfactant (sodium dodecylbenzene sulfonate – SDBS) with microwave, a greater liquefaction of 19.4% was obtained. A microwave input power of 450 W, time of 15 min and the SDBS dosage of 0.04 g/g TS were regarded as optimum conditions for enhanced liquefaction of GMM. Results of anaerobic fermentation indicates that the volatile fatty acids (VFA) concentration was almost two times (730 mg/L) higher in SMP than microwave pretreatment (MP) (345 mg/L). The exponential model outcomes of biochemical methane potential assay (BMP) showed higher biomethane generation for SMP (0.205 g COD/g COD) than MP (0.12 g COD/g COD). Therefore, SDBS coupled microwave liquefaction makes the pretreatment more energetic.

Original languageEnglish
Article number118802
JournalFuel
Volume281
DOIs
Publication statusPublished - 2020 Dec 1

Bibliographical note

Funding Information:
This work is supported by Department of Biotechnology , India under its initiative Mission innovation Challenge Scheme (IC4). The grant from the project entitled “A novel integrated biorefinery for conversion of lignocellulosic agro waste into value added products and bioenergy (BT/PR31054/PBD/26/763/2019) is utilized for this study.

Funding Information:
This work is supported by Department of Biotechnology, India under its initiative Mission innovation Challenge Scheme (IC4). The grant from the project entitled ?A novel integrated biorefinery for conversion of lignocellulosic agro waste into value added products and bioenergy (BT/PR31054/PBD/26/763/2019) is utilized for this study.

Publisher Copyright:
© 2020 Elsevier Ltd

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Fuel Technology
  • Energy Engineering and Power Technology
  • Organic Chemistry

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