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:: Volume 10, Issue 4 (Autumn 2023) ::
Environ. Health Eng. Manag. 2023, 10(4): 389-400 Back to browse issues page
Optimizing bioethanol production from cassava peels through agitation timing variation in separate hydrolysis and co-fermentation
Adewale Allen Sokan-Adeaga , Godson R.E.E Ana , Abel Olajide Olorunnisola , Edris Hoseinzadeh
Corresponding author: Department of Environmental Health Science, Faculty of Public Health, College of Medicine, Lead City University, Ibadan, Nigeria , sokanadeaga. adewaleallen@yahoo.com
Abstract:   (1236 Views)
Background: This study assessed the effect of various agitation timings on bioethanol production from cassava peels (CP) using separate hydrolysis and co-fermentation (SHCF) technique.
Methods: The milled CP was divided into three groups each of 20 g and subjected to two-stage hydrolysis carried out at 100 oC for 60 min and 50 minutes, respectively. Experimental layouts were Sample 1 (B1) [0 hours i.e., no shaking], Sample 2 (B2) [3 hours shaking with an electric shaker at 200 rev/min-1], and Sample 3 (B3) [6 hours shaking at 200 rev/min-1]. Fermentations were carried out at 30 oC for 72 days. Data were analyzed using descriptive statistics, one–way ANOVA, and New Duncan’s multiple range test at P = 0.05.
Results: The TSS and pH readings of the treatment groups before and after fermentation were: B1 – TSS (27.15 ± 0.15, 17.25 ± 0.07 oBx), pH (5.50 ± 0.00, 4.53 ± 0.04); B2 – TSS (27.32 ± 0.08, 14.78 ± 0.12 oBx), pH (5.50 ± 0.00, 4.74 ± 0.06); and B3 – TSS (27.17 ± 0.07, 10.24 ± 0.08 oBx), pH (5.50 ± 0.00, 4.77 ± 0.05) (P < 0.05). The mean fermentation efficiency (FE) and ethanol productivity (EP) were B1 (15.17 ± 0.07%, 0.122 ± 0.001 gL-1h-1), B2 (15.70 ± 0.18%, 0.126 ± 0.002 gL-1h-1), and B3 (18.80 ± 0.14%, 0.151 ± 0.001 gL-1h-1) (P < 0.05). All treatment groups attained the maximum ethanol yields at 72 hours of fermentation (P < 0.05). Agitation at 200 rev/min-1 for 6 hours gave the optimal FE (%), EP, and ethanol yield.
Conclusion: The established condition improved the Bioethanol quality and yield of CP. Thus, optimizing bioethanol production from CP would help enhance sustainable biofuel production without affecting food security.
Keywords: Ethanol, Fermentation, Hydrolysis, Saccharomyces cerevisiae, Sugars
Full-Text [PDF 777 kb]   (855 Downloads)    
Type of Study: Original Article | Subject: Special
Received: 2023/12/26 | Accepted: 2023/10/18 | Published: 2023/12/26
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Allen Sokan-Adeaga A, R.E.E Ana G, Olorunnisola A O, Hoseinzadeh E. Optimizing bioethanol production from cassava peels through agitation timing variation in separate hydrolysis and co-fermentation. Environ. Health Eng. Manag. 2023; 10 (4) :389-400
URL: http://ehemj.com/article-1-1258-en.html


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Creative Commons License This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
Volume 10, Issue 4 (Autumn 2023) Back to browse issues page
Environmental Health Engineering And Management Journal Environmental Health Engineering And Management Journal
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