Amelioration of Biogas Production from Waste-Activated Sludge through Surfactant-Coupled Mechanical Disintegration

Vijetha Valsa, Geethu Krishnan S, Rashmi Gondi, Preethi Muthu, Kavitha Sankarapandian, Gopalakrishnan Kumar, Poornachandar Gugulothu, Rajesh Banu Jeyakumar

Research output: Contribution to journalArticlepeer-review


The current study intended to improve the disintegration potential of paper mill sludge through alkyl polyglycoside-coupled disperser disintegration. The sludge biomass was fed to the disperser disintegration and a maximum solubilization of 6% was attained at the specific energy input of 4729.24 kJ/kg TS. Solubilization was further enhanced by coupling the optimum disperser condition with varying dosage of alkyl polyglycoside. The maximum solubilization of 11% and suspended solid (SS) reduction of 8.42% were achieved at the disperser rpm, time, and surfactant dosage of 12,000, 30 min, and 12 μL. The alkyl polyglycoside-coupled disperser disintegration showed a higher biogas production of 125.1 mL/gCOD, compared to the disperser-alone disintegration (70.1 mL/gCOD) and control (36.1 mL/gCOD).

Original languageEnglish
Article number57
Issue number1
Publication statusPublished - 2023 Jan

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.

Publisher Copyright:
© 2023 by the authors.

All Science Journal Classification (ASJC) codes

  • Food Science
  • Biochemistry, Genetics and Molecular Biology (miscellaneous)
  • Plant Science


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