Mixed Palm Oil Waste Utilization through Integrated Mushroom and Biogas Production

Nges, Ivo Achu; Kivaisi, Amelia K.; Temu, Stella G.; Mshandete, Anthony Manoni; Mattìasson, Bo; Moshi, Anselm P.

doi:10.9734/bbj/2016/23385

Cited by 5 publications

(3 citation statements)

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“…The methane content in waste streams digestion matches with the values of 45 % to 55 % for anaerobic digestion of rice straw (Zealand ., 2017). The specific methane yield obtained from anaerobic digestion of spent mushroom substrate of 148 ml CH g VS was found lesser than the result of anaerobic digestion of spent mushroom substrate of 193 ml CH g VS (Temu ., 2016). The reason for higher yield in literature was due to presence of lipids in the mixed palm oil waste used for mushroom cultivation.…”

Section: Figmentioning

confidence: 95%

Effect of spent mushroom substrate and waste paper briquette on methane production from anaerobic digestion

Sethumadhavan¹,

Selvan²

2018

JEB

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Aim : Methodology :Results : Interpretation :The objective of the study was to assess the methane yield of briquettes prepared from spent mushroom substrate and waste paper mixed in equal proportion.Spent mushroom substrate after cultivation of on rice straw and waste paper was milled to less than 5 mm size. They were briquetted in equal mass proportion in a screw type machine. Briquette and individual substrates were assessed for their methane potential under anaerobic conditions in 125 ml bottles incubated at 37°C for 60 days. Data was statistically analyzed using analysis of variance. Dunnett's post hoc test was used to assess the significance ( < 0.05).When waste paper was co-digested with spent mushroom substrate as powder, methane yield of 168 ml CH g VS was observed. When spent mushroom substrate -waste paper as briquette was used, highest methane yield of 250 ml CH g VS was observed. Size reduction in briquetting process made the cellulose and other components of plant cell walls more accessible to the microorganisms. SEM and FT-IR studies confirmed the impact of briquetting as a pretreatment step. Volatile fatty acid (VFA) to alkalinity ratio was observed as 0.26 at the end of digestion of briquettes, which confirmed the process stability.Methane yield from anaerobic digestion process was found to be enhanced by briquetting of spent mushroom substrate and waste paper.

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Section: Figmentioning

confidence: 95%

Effect of spent mushroom substrate and waste paper briquette on methane production from anaerobic digestion

Sethumadhavan¹,

Selvan²

2018

JEB

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“…As of December 2016, the oil palm industry in Malaysia accounts for about 5.74 million ha of agricultural land . In addition to the CPO production, three major wastes generated from the oil palm industry are solid waste, e.g., empty fruit bunch and palm press fiber, liquid waste, i.e., palm oil mill effluent (POME), and greenhouse gases, e.g., CO 2 and CH 4 . Solid waste is normally processed and converted into fertilizer for agricultural use while originally discharged POME is treated to produce biogas for energy generation , .…”

Section: Introductionmentioning

confidence: 99%

Performance of Nanofiltration‐Like Forward‐Osmosis Membranes for Aerobically Treated Palm Oil Mill Effluent

et al. 2017

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For the first time, engineered osmosis was performed using commercial nanofiltration (NF) membranes for the treatment process of aerobically treated palm oil mill effluent (AT-POME). Compared to conventional forward-osmosis (FO) membranes with dense rejection layer, the NF-like FO membranes offer a higher water flux with minimum reverse solute flux provided appropriate solutes like divalent salts or polyelectrolytes were used in the draw solution. Both NF membranes were able to treat the AT-POME by completely preventing the color component from passing through the permeate side under FO and pressure-retarded osmosis (PRO) orientation. The water fluxes of the membranes were higher under PRO orientation owing to the reduced internal concentration polarization effect. Relatively loose membranes for the engineered osmosis application could address severe surface fouling of membranes tested under pressure-driven filtration.

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“…In Tanzania specifically, several studies on microbial pre-treatments have been utilized for hydrolysis enhancements of OFMSW before the AD process (Muthangya et al, 2009;Temu et al, 2016). However, because of the heterogeneous composition of OFMSW, different specific enzymes may be required to degrade a different kind of OFMSW, and thus further studies are still needed (Cesaro & Belgiorno, 2014).…”

Section: Hydrolysis Stage Optimizationmentioning

confidence: 99%

Strategies to improve anaerobic digestion and environ-economic analysis of municipal solid wastes management options

Richard

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Different strategies have widely been applied for improving the anaerobic digestion of the organic fraction of municipal solid wastes. However, because of the heterogeneous compositions of organic fraction of municipal solid wastes, studies on different strategies are still required. This thesis focused on examining methods to improve anaerobic digestion of organic fraction of municipal solid wastes and environ-economic analysis of municipal solid wastes management options. Firstly, the study examined the effects of fungal (Pleurotus ostreatus) treatment of the banana leaves wastes towards edible mushrooms and biogas recovery. Secondly, the study assessed the effectiveness of banana winery wastewater in digesting the banana leaves wastes to improve methane yield. Thirdly, the study examined the potential of edible clay soils towards improving the anaerobic digestion of food wastes for biogas recovery. Next, the study analyzed and compared the environmental impacts of anaerobic digestion and other municipal solid waste management scenarios in the Arusha City of Tanzania. Finally, the study assessed the economic feasibility of the biogas plants for treating food and banana leaves wastes in the Arusha City of Tanzania. All the anaerobic digestion experiments were carried out in batch reactors. The environmental impact was analyzed using a life cycle analysis methodology. Fungal treatment of banana leaves wastes prior to anaerobic digestion process resulted in the biogas yield of 282 mL g -1 VS -1 and production of 181 ± 19 g of edible mushrooms per 2 kg of banana leaves wastes. The cost analysis revealed that mushroom cultivation has a higher economic value and therefore favoured before the anaerobic digestion process. Banana winery wastewater pre-treatment of banana leaves waste resulted in increased methane yield by 193% compared to non-pretreated banana leaves waste. The edible clay soils supplementation in the anaerobic digestion process resulted in an increase of 26.9% methane yield in a reactor with edible clay soils supplementation. Evaluations on environmental impacts revealed that the anaerobic digestion process outranked the current management option (Landfill) with the least environmental burdens. The study also revealed it is economically viable to invests the biogas plants for treating food and banana leaves wastes in Arusha City of Tanzania.

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Mixed Palm Oil Waste Utilization through Integrated Mushroom and Biogas Production

Cited by 5 publications

References 0 publications

Effect of spent mushroom substrate and waste paper briquette on methane production from anaerobic digestion

Effect of spent mushroom substrate and waste paper briquette on methane production from anaerobic digestion

Performance of Nanofiltration‐Like Forward‐Osmosis Membranes for Aerobically Treated Palm Oil Mill Effluent

Strategies to improve anaerobic digestion and environ-economic analysis of municipal solid wastes management options

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