Biogas production by co-digestion of sodium hydroxide pretreated Napier grass and food waste for community sustainability

Pinpatthanapong, Khathapon; Boonnorat, Jarungwit; Glanpracha, Naraporn; Rangseesuriyachai, Thaneeya

doi:10.1080/15567036.2022.2055232

Cited by 9 publications

(4 citation statements)

References 39 publications

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“…It can be inferred from this study that anaerobic co-digestion of alkali-pretreated groundnut shells with duck waste can improve the methane yield. This agreed with what was previously reported when sodium hydroxide pretreated Napier grass was co-digested with food waste [30]. The result shows that the highest cumulative methane yield was recorded when 75% of duck waste was combined with 25% alkali-pretreated groundnut shell (75: 25%, duck waste: alkali-pretreated groundnut shells) (treatment B).…”

Section: Cumulative Methane Yield Of Anaerobic Codigestion Of Alkali-...supporting

confidence: 91%

Anaerobic co-digestion of alkali-pretreated groundnut shells and duck waste for methane yield optimization and sustainable environment

Olatunji,

Madyira

2023

E3S Web Conf.

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This study investigated the effect of the anaerobic co-digestion of duck waste and alkali-pretreated groundnut shells at mesophilic temperature for methane yield optimization and waste management. Co-digestion of duck waste and alkali-pretreated groundnut shells was carried out using 100, 75: 25, 50: 50, 25: 75, and 100% duck waste: alkali-pretreated groundnut shells in a laboratory-batch digester at mesophilic temperature. The results indicated that anaerobic co-digestion of duck waste and alkali-pretreated groundnut shells is possible since no negative influence was observed during the joint digestion. It was observed that co-digestion released higher methane yield compared to mono-digestion. The optimum cumulative methane yield of 290 mL CH4 g/ VSadded was recorded from a 75: 25% ratio of duck waste: alkali-pretreated groundnut shells. This mixing ratio improved methane yield by 38%. This study confirms that the anaerobic co-digestion of duck waste and alkalipretreated groundnut shells can produce low-carbon fuel and economical waste management to maintain a sustainable environment.

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Section: Cumulative Methane Yield Of Anaerobic Codigestion Of Alkali-...supporting

confidence: 91%

Anaerobic co-digestion of alkali-pretreated groundnut shells and duck waste for methane yield optimization and sustainable environment

Olatunji,

Madyira

2023

E3S Web Conf.

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“…The chopped Xyris capensis (4-8 mm) was then soaked in the prepared solutions in a ratio of 1:10 of solid to liquid. The beaker with its contents was then placed on a magnetic stirrer for two hours at 200 rpm set at 90 • C, as reported in previous studies [24,25]. After the treatment exposure time, 10% of NaOH was added to stop further substrate oxidation and warm distilled water was added as an anti-solvent to prevent further reaction.…”

Section: Pretreatmentmentioning

confidence: 99%

Optimization of Biomethane Yield of Xyris capensis Grass Using Oxidative Pretreatment

Olatunji

Madyira

2023

Energies

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Biogas production from lignocellulose feedstocks has become an acceptable energy source globally due to their availability and economy. Lignocellulose materials have a complex arrangement that hinders digestion during the process. Therefore, applying the pretreatment process to lower the recalcitrant properties is required to utilize the full potential of the feedstock. This study, therefore, examines the influence of the oxidative pretreatment on the microstructural arrangement and biomethane yield of Xyris capensis. Piranha solution was prepared using H2O2 and H2SO4 at 100, 95:5, 85:15, and 75:25% of H2O2: H2SO4, respectively, and Xyris capensis grass was soaked in the prepared solution. The pretreated and untreated feedstocks were examined under the scanning electron microscope (SEM) to study the effect of the pretreatment on the microstructural arrangement. The effect of the pretreatment on biomethane yield was investigated during anaerobic digestion in a laboratory-scale batch digester at a mesophilic temperature (37 °C). The SEM analysis shows that the oxidative pretreatment method significantly affects the substrate’s microstructure, and the pretreatment’s severity depends on the percentage of H2SO4 added. A biomethane yield of 174.41, 188.61, 192.23, 207.51, and 139.71 mL CH4/g VSadded was observed, and the yield was increased by between 24.84 and 48.52% compared to the untreated substrate. Therefore, applying oxidative pretreatment using low-cost H2O2 is a clear method of improving the biomethane yield of lignocellulose feedstocks.

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“…The profile of Napier grass holds significant potential to be studied for biogas generation. Most reported studies have focused on using treated Napier grass to produce biogas, including chemical pretreatment with sodium hydroxide or deep eutectic solvents ( Pinpatthanapong et al, 2022 ; Gundupalli et al, 2023 ), biological pretreatment with mixed cultures enzyme ( Rangseesuriyachai et al, 2023 ), and physical pretreatment with sonication ( Song et al, 2023 ). However, there are limited studies on the use of untreated Napier grass.…”

Section: Introductionmentioning

confidence: 99%

Co-digestion approach for enhancement of biogas production by mixture of untreated napier grass and industrial hydrolyzed food waste

Kriswantoro,

Pan,

Chu

2024

Front. Bioeng. Biotechnol.

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The co-digestion of untreated Napier grass (NG) and industrial hydrolyzed food waste (FW) was carried out in the batch reactor to investigate the effect of substrate ratios on biogas production performance. Two-stage anaerobic digestion was performed with an initial substrate concentration of 5 g VSadded/L and a Food to Microorganism Ratio (F/M) of 0.84. The 1:1 ratio of the NG and FW showed the optimum performances on biogas production yield with a value of 1,161.33 mL/g VSadded after 60 days of digestion. This was followed by the data on methane yield and concentration were 614.37 mL/g VSadded and 67.29%, respectively. The results were similar to the simulation results using a modified Gompertz model, which had a higher potential methane production and maximum production rate, as well as a shorter lag phase and a coefficient of determination of 0.9945. These findings indicated that the co-digestion of Napier grass and hydrolyzed food waste can enhance biogas production in two-stage anaerobic digestion.

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Biogas production by co-digestion of sodium hydroxide pretreated Napier grass and food waste for community sustainability

Cited by 9 publications

References 39 publications

Anaerobic co-digestion of alkali-pretreated groundnut shells and duck waste for methane yield optimization and sustainable environment

Anaerobic co-digestion of alkali-pretreated groundnut shells and duck waste for methane yield optimization and sustainable environment

Optimization of Biomethane Yield of Xyris capensis Grass Using Oxidative Pretreatment

Co-digestion approach for enhancement of biogas production by mixture of untreated napier grass and industrial hydrolyzed food waste

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