Improvement of biogas production and quality by addition of struvite precipitates derived from liquid anaerobic digestion effluents of palm oil wastes

Wadchasit, Pornwimon; Rakmak, Nirattisai; O‐Thong, Sompong; Rattanasak, Ubolluk; Imai, Tsuyoshi; Jitpinit, Sarawut; Nuithitikul, Kamchai

doi:10.1016/j.jece.2022.109081

Cited by 15 publications

(4 citation statements)

References 50 publications

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“…The methane content obtained from both digesters was within the quality range for biogas suggested by (Wadchasit et al, 2023) with the exception of that obtained from digester C as presented in Table 1and agreed with other reports of William et al, (2016). The highest methane value was observed from digester B and the least was from digester C as clearly illustrated in Figure 3.…”

Section: Quality Test and Estimation Of Methane Contentsupporting

confidence: 91%

Optimizing Biogas Generation from Blends of Sugarcane Bagasse

Mohammed,

Shinkafi,

Gambo

2024

jobasr

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Renewable energy has been the alternative source to global energy scarcity which involves renewable resources as more emphasis been put to prospective ways of converting agricultural wastes into energy to meet both the local and global demands.This work analyzed the use of sugarcane bagasse as substrate in biogas production as well as its codigestion with cow dung and chicken droppings. Seven digesters each of 2.5 litres capacity were charged in a ratio of 1:3 solids to liquid for a retention period of 30 days within a temperature range of 25-32 oC was used. Digester A contained 100 % bagasse, B contained 100 % cow dung, C 100 % chicken droppings, D contained 50 % bagasse and 50 % cow dung, E contained 50 % bagasse and 50 % chicken droppings, F contained 70 % bagasse and 30% cow dung and 70 % bagasse and 30 % chicken droppings for digester, G. Proximate and microbial analysis of the spent slurry were carried out. The result shows that sample C has the highest volatile solids and protein content of 56.68 % and 10.01 %. Biogas production was observed to be higher in digester C with cumulative gas yield of 3228.3 cm3 then digester B with 2816.6 cm3 and Digester A had the least gas yield of 681.4 cm3. Lightening test was observed by passage over limewater which result in catching fire except on digester C. Methane and other traces of gases test using gas analyzer shows 61.3 % methane with the least having 46.7 % methane on digester B and C. Pseudomonas spp, Entrobacter aerogenes and Staphylococcus aureus were found to be dominant in almost all the digesters. Further research is required to investigate large volume production and to improve gas storage techniques.

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Section: Quality Test and Estimation Of Methane Contentsupporting

confidence: 91%

Optimizing Biogas Generation from Blends of Sugarcane Bagasse

Mohammed,

Shinkafi,

Gambo

2024

jobasr

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“…Interestingly, the removal of TKN and TP was found to be higher at pH 11 than at the other pH conditions in the alkaline pretreatment (Figure 3a). The high pH condition may cause the N and P to precipitate in the pretreatment process [70,71]. Nevertheless, N and P removals were also considered low in the pretreatment of alkaline and additional ZVI (Figure 3a,b).…”

Section: Nutrient Removalsmentioning

confidence: 99%

Combination of Alkaline and Heat Pretreatments with Zero-Valent Iron Application in Cassava Pulp and Wastewater for Methane Generation: Development from Batch to Continuous Systems

et al. 2023

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Pretreatment with the addition of metals to anaerobic digestion in biogas production is crucial to address improper degradation of organic compounds with low methane production. Biogas production from a combination of cassava pulp and cassava wastewater in the batch system under the variation of alkaline and heat conditions as a pretreatment was investigated with the zero-valent iron (ZVI) addition after the pretreatment. It was found that alkaline pretreatment at pH 10 with the heat at 100 °C for 30 min combined with 50 g of ZVI kg of TVS−1 showed the highest methane production up to 4.18 m3 CH4 kg TVS−1. Nevertheless, chemical oxygen demand (COD) and volatile fatty acid (VFA) removals were slightly reduced when ZVI was added to the system. Furthermore, application in the continuous system showed increased COD and VFA removals after applying alkaline and heat pretreatments. On the other hand, additional ZVI in the substrate after the pretreatments in the continuous system increased the methane production from 0.58 to 0.90 and 0.19 to 0.24 of CH4 m3 kg TVS−1 in 20 and 60 days of hydraulic retention times (HRTs), respectively. Thus, a suitable combination of alkaline and heat pretreatments with ZVI is essential for increasing methane production in batch and continuous systems.

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“…Acetogenic bacteria transform VFAs into acetic acid, and methanogens produce methane and CO 2 in the final stage [ 5 ]. AD's potential is evident in its application to various agricultural wastes like wheat straw, corn cobs, and palm oil wastes [ [6] , [7] , [8] ].…”

Section: Introductionmentioning

confidence: 99%

Unlocking the potential of sugarcane leaf waste for sustainable methane production: Insights from microbial pre-hydrolysis and reactor optimization

Sitthikitpanya,

Ponuansri,

Jomnonkhaow

et al. 2024

Heliyon

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Improvement of biogas production and quality by addition of struvite precipitates derived from liquid anaerobic digestion effluents of palm oil wastes

Cited by 15 publications

References 50 publications

Optimizing Biogas Generation from Blends of Sugarcane Bagasse

Optimizing Biogas Generation from Blends of Sugarcane Bagasse

Combination of Alkaline and Heat Pretreatments with Zero-Valent Iron Application in Cassava Pulp and Wastewater for Methane Generation: Development from Batch to Continuous Systems

Unlocking the potential of sugarcane leaf waste for sustainable methane production: Insights from microbial pre-hydrolysis and reactor optimization

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