Operating condition optimization of water hyacinth and earthworm bedding wastewater for biogas production

Chanathaworn, Jutaporn

doi:10.1016/j.egypro.2017.10.049

Cited by 10 publications

(9 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The FW, WH, and inoculum were analyzed for Moisture content (MC), Total solids (TS), Volatile solid (VS), Ash content, pH, and carbon to nitrogen (C/N) ratio using standard methods [ 12 – 14 , 18 , 21 ]. The characteristics of the feedstock are presented in Table 1 .…”

Section: Methodsmentioning

confidence: 99%

“…The effectiveness of the second-order polynomial equation fit was expressed using the coefficient of determination ( R 2 ). Model terms were assessed using P -value [ 18 , 20 , 22 , 23 ].…”

Section: Methodsmentioning

confidence: 99%

“…The optimum biogas of 500 cm 3 was produced at the optimal values of 25 cm 3 of water, 0.6 g of fungus, and a temperature of 33 ℃. Chanathaworn [ 18 ] has researched optimization conditions for biogas production from WH and earthworm bedding wastewater by varying particle size (0.3–1.5 cm), TS (4–12%), and pH. Optimum biogas of 35.50% was obtained at 8% of TS, 0.3 cm particle size, and 7.0 initial pH.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Optimization of biogas production from anaerobic co-digestion of fish waste and water hyacinth

Ingabire

M’Arimi

Kiriamiti

et al. 2023

Biotechnol Biofuels

View full text Add to dashboard Cite

Many fresh water bodies face a great challenge of an invasive weed called water hyacinth (WH) which has great impacts on the environment, ecology, and society. Food and Agriculture Organization (FAO) estimates that over nine million tons of Fish wastes (FW) are thrown away each year. The fish waste generated poses environmental and health hazards because in most cases it is either disposed into pits or discarded onto the open grounds. Both WH and FW are potential substrates for biogas production. However, utilization of FW substrate alone has a limitation of producing a lot of amounts of volatile fatty acids (VFAs) and ammonia. Their accumulation in the digester inhibits substrate digestion. Consequently, as stand-alone it is not suitable for anaerobic digestion (AD). This can be overcome by co-digestion with a substrate like WH which has high carbon to nitrogen (C/N) ratio prior to biodigestion. Experimental variable levels for biogas were substrate ratio (WH:FW, 25–75 g), inoculum concentration (IC, 5–15 g/250 mL), and dilution (85–95 mL). Design-Expert 13 was used for optimization and results analysis. Response surface methodology (RSM) was used to examine the effects of operating parameters and identify optimum values for biogas yield. Optimum values for maximum biogas with the highest methane yield of 68% were found to be WH:FW ratio, 25:75 g, 15 g of IC, and 95 mL for dilution. The yield was 16% and 32% greater than FW and WH mono-digestion, respectively. The biogas yield was expressed as a function of operating variables using a quadratic equation. The model was significant (P < 0.05). All factors had significant linear and quadratic effects on biogas while only the interaction effects of the two factors were significant. The coefficient of determination (R2) of 99.9% confirmed the good fit of the model with experimental variables.

show abstract

Section: Methodsmentioning

confidence: 99%

“…The effectiveness of the second-order polynomial equation fit was expressed using the coefficient of determination ( R 2 ). Model terms were assessed using P -value [ 18 , 20 , 22 , 23 ].…”

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Optimization of biogas production from anaerobic co-digestion of fish waste and water hyacinth

Ingabire

M’Arimi

Kiriamiti

et al. 2023

Biotechnol Biofuels

View full text Add to dashboard Cite

show abstract

“…The effectiveness of the second-order polynomial equation t was expressed using the coe cient of determination (R 2 ). Model terms were assessed using the P-value [19,30,31,32].…”

Section: Experimental Design and Optimizationmentioning

confidence: 99%

“…It creates mats that obstruct waterways, makes shing impossible, limits water ow, degrades water quality by obstructing sunlight from penetrating the water and sharply lowering oxygen levels in the water, wipes out aquatic life like sh, and signi cantly reduces biodiversity. WH used to be the subject of annual expenditures of millions of dollars to manage its growth [16,19,20,21]. However, there are potential advantages of WH, including the creation of biogas, fertilizer, animal food, puri ed water, berboard, and paper [16, 21,22].In these situations, the weeds' digestion can provide energy while resolving the issue of excessive weed growth in canals and ensuring appropriate management of the plant [1,16,18,19].WH contains a high cellulose content, low lignin, and high carbonto-nitrogen (C/N) ratio, and is readily and abundantly available [1,16].…”

Section: Introductionmentioning

confidence: 99%

Optimization of Biogas Production from Anaerobic Co-Digestion of Fish Waste and Water Hyacinth

Ingabire,

NTAMBARA,

Arimi

et al. 2023

Preprint

View full text Add to dashboard Cite

Fish waste (FW) and water hyacinth (WH) are biodegradable wastes that remain underutilized and unexploited and cause environmental problems since the existing disposal techniques result in environmental pollution and health risks. Anaerobic Co-digestion of FW and WH can be used to improve biogas generation as a source of energy to replace fossil fuel consumption. The conversion of waste to energy can provide an answer to environmental pollution, waste treatment and management, and rising energy costs. Experimental variable levels for biogas were substrate ratio (WH: FW, 25-75g), inoculum concentration (IC, 5-15g), and dilution (85-95mL). Design-Expert 13 was used for optimization and results analysis. Response surface methodology (RSM) was used to examine the effects of operating parameters and identify optimum values for biogas yield. Optimum values for maximum biogas yield of 690mL with the highest methane yield of 68.15% were found to be WH: FW ratio, 25:75g, 15g of IC, and 95 mL for dilution. The yield was 16.1% and 32.4% greater than FW and WH mono-digestion, respectively. Using a quadratic equation, the biogas yield was expressed as a function of operating variables. The model was significant (P < 0.05). All factors had significant linear and quadratic effects on biogas while only the interaction effects of the two factors were significant. The coefficient of determination(R2) of 99.9% confirms the good fit of the model with experimental variables.

show abstract

Optimizing Methane Production from Co-digestion of Cassava Biomass and Winery Solid Waste Using Response Surface Methodology

Mkruqulwa

Okudoh

Oyekola

2019

Waste Biomass Valor

View full text Add to dashboard Cite

Operating condition optimization of water hyacinth and earthworm bedding wastewater for biogas production

Cited by 10 publications

References 15 publications

Optimization of biogas production from anaerobic co-digestion of fish waste and water hyacinth

Optimization of biogas production from anaerobic co-digestion of fish waste and water hyacinth

Optimization of Biogas Production from Anaerobic Co-Digestion of Fish Waste and Water Hyacinth

Optimizing Methane Production from Co-digestion of Cassava Biomass and Winery Solid Waste Using Response Surface Methodology

Contact Info

Product

Resources

About