Producing methane, methanol and electricity from organic waste of fermentation reaction using novel microbes

Saurabh Sudha Dhiman; Namita Shrestha; Aditi David; Neha Basotra; Glenn R Johnson; Bhupinder S Chadha; Venkataramana Gadhamshetty; Rajesh K Sani

doi:10.1016/j.biortech.2018.02.128

Producing methane, methanol and electricity from organic waste of fermentation reaction using novel microbes

Bioresour Technol. 2018 Jun:258:270-278. doi: 10.1016/j.biortech.2018.02.128. Epub 2018 Mar 20.

Authors

Saurabh Sudha Dhiman¹, Namita Shrestha², Aditi David³, Neha Basotra⁴, Glenn R Johnson⁵, Bhupinder S Chadha⁶, Venkataramana Gadhamshetty⁷, Rajesh K Sani⁸

Affiliations

¹ Department of Chemical and Biological Engineering, South Dakota School of Mines and Technology, Rapid City, SD 57701, USA; BuG ReMeDEE Consortium, South Dakota School of Mines and Technology, Rapid City, SD 57701, USA; Composite and Nanocomposite Advanced Manufacturing Centre - Biomaterials (CNAM/Bio), Rapid City, SD 57701, USA.
² Department of Civil and Environmental Engineering, South Dakota School of Mines and Technology, Rapid City, SD 57701, USA.
³ Department of Chemical and Biological Engineering, South Dakota School of Mines and Technology, Rapid City, SD 57701, USA.
⁴ Department of Chemical and Biological Engineering, South Dakota School of Mines and Technology, Rapid City, SD 57701, USA; Department of Microbiology, Guru Nanak Dev University, Amritsar, Punjab 143005, India.
⁵ Hexpoint Technologies Inc. PO Box 1159, Panama City, FL 32402, USA.
⁶ Department of Microbiology, Guru Nanak Dev University, Amritsar, Punjab 143005, India.
⁷ BuG ReMeDEE Consortium, South Dakota School of Mines and Technology, Rapid City, SD 57701, USA; Department of Civil and Environmental Engineering, South Dakota School of Mines and Technology, Rapid City, SD 57701, USA; Surface Engineering Research Centre, South Dakota School of Mines and Technology, Rapid City, SD 57701, USA.
⁸ Department of Chemical and Biological Engineering, South Dakota School of Mines and Technology, Rapid City, SD 57701, USA; BuG ReMeDEE Consortium, South Dakota School of Mines and Technology, Rapid City, SD 57701, USA; Composite and Nanocomposite Advanced Manufacturing Centre - Biomaterials (CNAM/Bio), Rapid City, SD 57701, USA. Electronic address: Rajesh.sani@sdsmt.edu.

PMID: 29544100
DOI: 10.1016/j.biortech.2018.02.128

Abstract

Residual solid and liquid streams from the one-pot CRUDE (Conversion of Raw and Untreated Disposal into Ethanol) process were treated with two separate biochemical routes for renewable energy transformation. The solid residual stream was subjected to thermophilic anaerobic digestion (TAD), which produced 95 ± 7 L methane kg^-1 volatile solid with an overall energy efficiency of 12.9 ± 1.7%. A methanotroph, Methyloferula sp., was deployed for oxidation of mixed TAD biogas into methanol. The residual liquid stream from CRUDE process was used in a Microbial Fuel Cell (MFC) to produce electricity. Material balance calculations confirmed the integration of biochemical routes (i.e. CRUDE, TAD, and MFC) for developing a sustainable approach of energy regeneration. The current work demonstrates the utilization of different residual streams originated after food waste processing to release minimal organic load to the environment.

Keywords: Food waste; Methane oxidation; Methyloferula stellata; Microbial fuel cell; Thermophilic anaerobic digestion.

MeSH terms

Anaerobiosis
Biofuels*
Bioreactors*
Electricity
Fermentation
Methane*
Methanol
Refuse Disposal

Substances

Biofuels
Methane
Methanol