Optimization of simultaneous thermophilic fermentative hydrogen production and COD reduction from palm oil mill effluent by Thermoanaerobacterium-rich sludge

O‐Thong, Sompong; Prasertsan, Poonsuk; Intrasungkha, Nugul; Dhamwichukorn, Srisuda; Birkeland, Nils-Kåre

doi:10.1016/j.ijhydene.2007.12.017

Cited by 180 publications

(77 citation statements)

References 42 publications

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“…Removal of more H + associated with low buffering capacity of soil used in the study, increased the soil pH and enhanced more formation of NH 4 over NH 3 . The rate of urea hydrolysis for urea-TSP-MOP, urea-TSP-MOP-HA and urea-TSP-MOP-FA mixtures were slower by 2 days than volatilization of urea alone because more hydrogen ion contained in phosphoric acid or in the HA and FA's functional groups effectively replaced the removed H + during urea hydrolysis thus aiding in buffering the soil pH from increasing sharply and slowing down the rate of ammonia volatilization.…”

Section: Discussionmentioning

confidence: 97%

“…The POME contains high Bio-Chemical Oxygen Demand (BOD) and Chemical Oxygen Demand (COD) which pose a great threat to water environment. Disposal of this highly polluting waste is an economic burden on communities and industries [3] therefore adding value to this waste could be economically viable. POME could be put into good use in view of its high content of organic matter [1] potentially present in the form of Humic Acids (HA) and Fulvic Acids (FA).…”

Section: Introductionmentioning

confidence: 99%

“…High total acidity (CEC) associated with HA aid to retain NH 4 and NO 3 [4][5][6][7] which are the plant usable form of nitrogen. The exchange capacity of FA is more than double that of HA due to the total number carboxyl (COOH) groups present and this is expected to retain more NH 4 and NO 3 . High contents of NH 4 and NO 3 in the soil without good retention may not guarantee plant N use efficiency because both NH 4 and NO 3 are prone to leaching [9] .…”

Section: Introductionmentioning

confidence: 99%

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Controlling Ammonia Volatilization by Mixing Urea with Humic Acid, Fulvic Acid, Triple Superphosphate and Muriate of Potash

Rosliza¹,

Ahmed²,

Majid³

2009

American J. of Environmental Sciences

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Problem statement: Inefficient use of inorganic fertilizer such as urea is caused by substantial losses of ammonia when urea is surface-applied. Ammonia losses can be controlled by adding acidic material such as TSP, HA or FA. In order to reduce ammonia loss and retain soil exchangeable ammonium and available nitrate as well as producing complete organic based fertilizer, this study was conducted to compare the effects of urea-TSP-MOP, urea-TSP-MOP-HA, urea-TSP-MOP-FA, urea-TSP-MOP-acidified (HA + FA) mixtures on ammonia loss, soil pH, soil exchangeable ammonium and available nitrate accumulation compared to urea alone. Approach: The effects of urea amended with or without TSP, MOP, HA and FA were evaluated in a laboratory condition using a closed-dynamic air flow system. Ammonia loss, soil pH, soil exchangeable ammonium and available nitrate were determined using standard procedures. Results: Urea-TSP-MOP-HA, Urea-TSP-MOP, Urea-TSP-MOP-FA and Urea-TSP-MOP-Acidified (HA + FA) mixtures significantly reduces ammonia loss by 12.92, 20.12, 29.54 up to 100 % compared to urea alone. The same observation was made for soil exchangeable ammonium. From all the treatments, only Urea-TSP-MOP-FA and Urea-TSP-MOP-Acidified (HA + FA) significantly retained soil available nitrate accumulation and the findings were consistent with pH found in the study. It must be stressed that results obtained in the incubation experiment using an acidic (pH water 6.32) soil of Typic Paleudults (Bekenu series) might only be applicable to similar acid soils. Conclusion: Urea, TSP and MOP amended with HA or HA and FA significantly reduced ammonia loss. The outcome of this study may contribute to the improvement of urea N, P and K use efficiency as well as reducing environmental pollution.

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Section: Discussionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Controlling Ammonia Volatilization by Mixing Urea with Humic Acid, Fulvic Acid, Triple Superphosphate and Muriate of Potash

Rosliza¹,

Ahmed²,

Majid³

2009

American J. of Environmental Sciences

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“…The COD removal efficiency of an organism is a characteristic feature determining its hydrogen production capability (Ramprakash and Muthukumar 2014). The general range of COD removal efficiencies in fermentative hydrogen production processes is between 20 and 40% (O-Thong et al 2008). However, higher efficiencies have been exhibited with various other studies; COD removal of 71.8% was obtained during the fermentation of enzymatic hydrolysed rice mill wastewater (Ramprakash and Muthukumar 2014).…”

Section: Process Variables: Ph Cod and Glucosementioning

confidence: 99%

“…About 75% efficiency was recorded for the fermentation of paper and pulp industry effluent with Enterobacter aerogenes (Lakshmidevi and Muthukumar 2010). In the fermentation of palm oil mill effluent, a COD removal efficiency of 63% was obtained which could enhance hydrogen production (O-Thong et al 2008).…”

Section: Process Variables: Ph Cod and Glucosementioning

confidence: 99%

Biohydrogen production by locally isolated facultative bacterial species using the biomass of Eichhornia crassipes: effect of acid and alkali treatment

Mechery¹,

Biji²,

Thomas³

et al. 2017

Energ. Ecol. Environ.

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Hydrogen (H 2 ) produced from biological methods is a potential option to meet the growing clean energy needs. The present study aimed to produce biohydrogen by dark fermentation from nuisance aquatic weed, Eichhornia crassipes, using facultative anaerobic bacteria. A total of 12 bacterial strains were isolated from different wastewater sources and were screened for the potential of H 2 production using glucose as carbon source. Ten strains showed the H 2 -producing potential and were identified up to the generic level by biochemical tests. Two strains with higher H 2 production were sequenced using PCR technique and identified as Proteus mirabilis and Pseudomonas aeruginosa and selected for the studies with E. crassipes as the substrate. It was found that P. aeruginosa could produce 19.54 ± 0.03% of H 2 from 2% acid (H 2 SO 4 ) treated substrate which was comparatively higher than that of 4 and 8% treatments. P. mirabilis also yielded better results of 5.42 ± 0.02% H 2 f or 2% acid (H 2 SO 4 ) treated substrate than 4 and 8% treatments. In total, 33.52 ± 0.04% of H 2 was produced by P. aeruginosa for the substrate treated with 2% alkali (NaOH). It was noted that with respect to P. mirabilis 4% alkali treated substrate yielded a higher percentage of H 2 (20.23 ± 0.03%) compared to the other two concentrations. The results indicate that alkali treated substrate produced comparatively higher amount of H 2 than that of acid treated substrates. Regarding efficiency, P. aeruginosa was found to be more competent than P. mirabilis.

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Current Developments in Industrial Fermentation Processes

Niakousari

Razmjooei

Nejadmansouri

et al. 2021

Fermentation Processes

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Optimization of simultaneous thermophilic fermentative hydrogen production and COD reduction from palm oil mill effluent by Thermoanaerobacterium-rich sludge

Cited by 180 publications

References 42 publications

Controlling Ammonia Volatilization by Mixing Urea with Humic Acid, Fulvic Acid, Triple Superphosphate and Muriate of Potash

Controlling Ammonia Volatilization by Mixing Urea with Humic Acid, Fulvic Acid, Triple Superphosphate and Muriate of Potash

Biohydrogen production by locally isolated facultative bacterial species using the biomass of Eichhornia crassipes: effect of acid and alkali treatment

Current Developments in Industrial Fermentation Processes

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