Degradation of Phenolic Compounds in Palm Oil Mill Effluent by Silica‐Immobilized Bacteria in Internal Loop Airlift Bioreactors

Khongkhaem, Piyamart; Suttinun, Oramas; Intasiri, Amarawan; Pinyakong, Onruthai; Luepromchai, Ekawan

doi:10.1002/clen.201300853

Cited by 15 publications

(5 citation statements)

References 31 publications

(50 reference statements)

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“…Using Acinetobacter sp. PK1, phenolic compounds including FA and PHBA are removed from palm oil mill effluent ( Khongkhaem et al, 2016 ). To the best of our knowledge, it has not been reported that strains of Acinetobacter might degrade a mixture of FA and PHBA in soil.…”

Section: Introductionmentioning

confidence: 99%

Acinetobacter calcoaceticus CSY-P13 Mitigates Stress of Ferulic and p-Hydroxybenzoic Acids in Cucumber by Affecting Antioxidant Enzyme Activity and Soil Bacterial Community

et al. 2018

Front. Microbiol.

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Ferulic acid (FA) and p-hydroxybenzoic acid (PHBA) are main phenolic compounds accumulated in rhizosphere of continuously cropped cucumber, causing stress in plants. Microbial degradation of a mixture of FA and PHBA is not well understood in soil. We isolated a strain CSY-P13 of Acinetobacter calcoaceticus, inoculated it into soil to protect cucumber from FA and PHBA stress, and explored a mechanism underlying the protection. CSY-P13 effectively degraded a mixture of FA and PHBA in culture solution under conditions of 39.37°C, pH 6.97, and 21.59 g L-1 potassium dihydrogen phosphate, giving rise to 4-vinyl guaiacol, vanillin, vanillic acid, and protocatechuic acid. During FA and PHBA degradation, activities of superoxide dismutase (SOD), catalase, ascorbate peroxidase, and dehydroascorbate reductase in CSY-P13 were induced. Inoculated into cucumber-planted soil containing 220 μg g-1 mixture of FA and PHBA, CSY-P13 degraded FA and PHBA in soil, increased plant height, and decreased malonaldehyde, superoxide radical, and hydrogen peroxide levels in leaves. CSY-P13 also enhanced SOD, guaiacol peroxidase, catalase, glutathione peroxidase, ascorbate peroxidase, monodehydroascorbate reductase, dehydroascorbate reductase, and glutathione reductase activities; increased ascorbate and glutathione contents; and elevated transcript levels of copper/zinc SOD, manganese SOD, and catalase in leaves under FA and PHBA. Moreover, CSY-P13 increased phosphatase, catalase, urease, and sucrase activities and changed bacterial richness, diversity, and community composition by high throughput sequencing in cucumber-planted soil supplemented with the mixture of FA and PHBA. So CSY-P13 degrades the mixture of FA and PHBA in soil and mitigates stress from the two phenolic compounds in cucumber by activating antioxidant enzymes, changing soil bacterial community, and inducing soil enzymes.

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Section: Introductionmentioning

confidence: 99%

Acinetobacter calcoaceticus CSY-P13 Mitigates Stress of Ferulic and p-Hydroxybenzoic Acids in Cucumber by Affecting Antioxidant Enzyme Activity and Soil Bacterial Community

et al. 2018

Front. Microbiol.

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“…POME is considered a harmful pollutant to the aquatic environment since it uses the available oxygen in the river for degradation process. This phenomenon leads to depletion of available oxygen for the existing aquatic lives in the water [5]. Therefore, treatment process is required before discharging to waterways.…”

Section: Pome and Pollutionmentioning

confidence: 99%

Aerobic Degradation Process in Palm Oil Mill— Issues, Challenges and Upsurging Its Efficiency through Bioremediation

Razak¹,

Bohari²,

Fishal³

et al. 2022

JWARP

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Palm oil mill effluent (POME) is liquid waste produced from palm oil extraction process. Discharging it to the river without treatment is violation according to Malaysia Environment of Quality Act (EQA) 1974. In Malaysia, ponding system is a conventional treatment method for POME due to its economical and simple process. The treatment process mainly involves two main treatment phases; anaerobic and aerobic degradation. Anaerobic degradation has a proven track record in reducing pollutant properties in POME up to 85%. The real challenge is to increase the efficiency of aerobic process as the biological oxygen demand (BOD) discharge limit has been further reduced from 100 mg•L −1 to less than 20 mg•L −1 . One of economical and feasible approach to increase the efficiency of aerobic phase is via bioremediation. This paper describes the limitation of aerobic degradation in ponding system, besides discussed on the important aspects that need to be optimized for a success implementation of bioremediation and its challenges.

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“…NP3 and Acinetobacter sp. PK1 [2,27] or fungi such as Trametes hirsuta AK04 [3] and Pleurotus sajor caju [28] in the grass-soil pots to support the activity of soil bacteria.…”

Section: Comparison Of Various Grasses On Reducing Phenolic Compoundsmentioning

confidence: 99%

“…The effluent from stabilization ponds or treated POME (TPOME) has better water quality but still contains toxic phenolic compounds. Recently, several bacterial and fungal strains have been found to degrade up to 80-90% of 27-475 mg/L phenolic compounds in TPOME [2][3][4]. These microbial strains usually applied as immobilized cells in bioreactor with aeration unit, thus the process construction and operation will be inconvenient and costly.…”

Section: Introductionmentioning

confidence: 99%

Phenolic compounds removal by grasses and soil bacteria after land application of treated palm oil mill effluent: A pot study

Phonepaseuth

Rakkiatsakul

Kachenchart

et al. 2018

Environmental Engineering Research

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Land application of treated palm oil mill effluent (TPOME) could be used as an alternative tertiary wastewater treatment process. However, phenolic compounds in TPOME might be leached to the environment. This study investigated the ability of grasses on reducing phenolic compounds in the leachate after TPOME application. Several pasture grasses in soil pots were compared after irrigating with TPOME from stabilization ponds, which contained 360-630 mg/L phenolic compounds. The number of soil bacteria in planted pots increased over time with the average of 10 8 CFU/g for mature grasses, while only 10 4-10 6 CFU/g were found in the unplanted control pots. The leachates from TPOME irrigated grass pots contained lower amounts of phenolic compounds and had lower phytotoxicity than that of control pots. The phenol removal efficiency of grass pots was ranged 67-93% and depended on grass cultivars, initial concentration of phenolic compounds and frequency of irrigations. When compared to water irrigation, TPOME led to an increased phenolic compounds accumulation in grass tissues and decreased biomass of Brachiaria hybrid and Brachiaria humidicola but not Panicum maximum. Consequently, the application of TPOME could be conducted on grassland and the grass species should be selected based on the utilization of grass biomass afterward.

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Degradation of Phenolic Compounds in Palm Oil Mill Effluent by Silica‐Immobilized Bacteria in Internal Loop Airlift Bioreactors

Cited by 15 publications

References 31 publications

Acinetobacter calcoaceticus CSY-P13 Mitigates Stress of Ferulic and p-Hydroxybenzoic Acids in Cucumber by Affecting Antioxidant Enzyme Activity and Soil Bacterial Community

Acinetobacter calcoaceticus CSY-P13 Mitigates Stress of Ferulic and p-Hydroxybenzoic Acids in Cucumber by Affecting Antioxidant Enzyme Activity and Soil Bacterial Community

Aerobic Degradation Process in Palm Oil Mill— Issues, Challenges and Upsurging Its Efficiency through Bioremediation

Phenolic compounds removal by grasses and soil bacteria after land application of treated palm oil mill effluent: A pot study

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