Biogas Generation from Co-digestion of Four Substrates; Water Hyacinth, Cassava Peels, Poultry Droppings and Cow Dung

Etta, Asikong; Epoke, J; Ben, Ayade; Tiku, D.R.

doi:10.9734/arrb/2017/29459

Cited by 5 publications

(1 citation statement)

References 4 publications

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“…In addition to microbial community stability, incorporation of inoculum during the metabolic process of AD is an efficient technique as the inoculum enhances the degradation of substrate through improved enzyme activities (Dennis 2015 ). Several studies have been conducted on the relevance of water hyacinth for the production of biogas (Etta et al 2017 ; Barua et al 2019 ; Kunatsa et al 2020 ; Unpaprom et al 2021 ). However, the use of water hyacinth as a potential inoculum to enhance biogas production is yet to be investigated.…”

Section: Introductionmentioning

confidence: 99%

Bioaugmentation potential of inoculum derived from anaerobic digestion feedstock for enhanced methane production using water hyacinth

Linda

Roopnarain

Tekere

et al. 2023

World J Microbiol Biotechnol

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The utilisation of water hyacinth for production of biogas is considered to be a solution to both its control and the global renewable energy challenge. In this instance, an investigation was conducted to evaluate the potential of water hyacinth inoculum to enhance methane production during anaerobic digestion (AD). Chopped whole water hyacinth (10% (w/v)) was digested to prepare an inoculum consisting mainly of water hyacinth indigenous microbes. The inoculum was incorporated in the AD of freshly chopped whole water hyacinth to set up different ratios of water hyacinth inoculum and water hyacinth mixture with appropriate controls. The results of batch tests with water hyacinth inoculum showed a maximal cumulative volume of 211.67 ml of methane after 29 days of AD as opposed to 88.6 ml of methane generated from the control treatment without inoculum. In addition to improving methane production, inclusion of water hyacinth inoculum reduced the electrical conductivity (EC) values of the resultant digestate, and, amplification of nifH and phoD genes in the digestate accentuates it as a potential soil ameliorant. This study provides an insight into the potential of water hyacinth inoculum to enhance methane production and contribute to the feasibility of the digestate as a soil fertility enhancer.

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