Bioconversion of Municipal Solid Wastes for Bioethanol Production

J. Patra¹, A. Basu², A. Mishra³ and N. K. Dhal²

¹Department Biotechnology, North Orissa University Baripada, India.

²Environment and Sustainability Department, CSIR-IMMT, Bhubaneswar, Odisha, India.

³Department Biotechnology Vinoba BhaveUniversity, Hazaribagh, Jharkhand, India.

Corresponding Author E-mail:  jyoshnamayeepatra30@gmail.com

DOI : http://dx.doi.org/10.13005/bbra/2554

ABSTRACT: The use of dilute acid (H₂SO₄, 3%) and alkali (NaOH, 3%) pretreatment methods has some potential how ever to date, these methods effectively increase ethanol production of municipal solid waste (MSW). Enzymatic hydrolysis was carried out with Aspergillus niger, Aspergillus fumigatus and Trichoderma reesei. Finally, the fermentation was done by sugar three ethanologenic yeasts, Saccharomyces cerevisiae, pichia stipitis, canida shehatae for bioethanol production.The highest ethanol yield (22.32%) v/v. was obtained with a pre-hydrolysis treatment consisting of NaOH at 3% concentration, followed by Pichia stipitis  and enzymatic hydrolysis with Aspergillus niger. Pre-hydrolysis treatment consisted Enzymatic hydrolysis was carried out with Alkali pretreated wastes yield more sugar as compared to acid treatment using produced more ethanol than others at each time point. The experimental results observed that 80% of the cellulose converted to glucose from the waste which can be easily fermented to production. of ethanol. The ability focus on related environmental issues, such as sustainable waste management, climate change, land use and biodiversity, are discussed.

KEYWORDS: Bioethanol; Biomass; Municipal solid waste (MSW); Microbial strain; sustainable waste management

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