Depolymerization of lignocellulose of oil palm empty fruit bunch by thermophilic microorganisms from tropical climate

Azman, Nadia Farhana; Noor, Megat Johari Megat Mohd; Akhir, Fazrena Nadia Md; Ang, May Yen; Hashim, Hazni; Othman, Norhayani; Zakaria, Zuriati; Hara, Hirofumi

doi:10.1016/j.biortech.2019.01.122

Cited by 15 publications

(8 citation statements)

References 41 publications

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“…Therefore, discharging such partially treated wastewater is hazardous due to the high concentration of the carcinogenic colorants (Kamal et al, 2019). Nonetheless, the carbonaceous complex colorants present in POME could be utilized as a sole carbon source for the indigenous and/or inoculated bacteria under favorable conditions, thereby metabolizing it into simpler and less harmful compounds (Azman et al, 2019). This is the main focus of the current study.…”

Section: Tss Mgmentioning

confidence: 99%

Decolorization of Palm Oil Mill Effluent by Klebsiella Pneumonia ABZ11: Remediation Efficacy and Statistical Optimization of Treatment Conditions

et al. 2020

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Colorants contained in palm oil mill effluent (POME) are recalcitrant and carcinogenic in nature. The commonly applied ponding treatment methods have been reported inefficient for remediating the concentration of the colorants before discharge. The need for sustainable and efficient treatment technique is crucial in order to preserve the environment. In this view, this study reported the first attempt to decolorize POME using a proliferate Klebsiella Pneumonia ABZ11 at varied inoculum sizes of 5-25% (v/v), initial color concentration (650-2,600 ADMI) and treatment time of 5-40 h. The treatment conditions were optimized using Response Surface Methodology. At optimal conditions of 20% (v/v) inoculum size, initial-color concentration of 2,600 ADMI, initial pH of 7 and 35 h treatment retention time, over 80.40% color removal was achieved with insignificant disparity compared with the model predicted value of 81.538%. Also, the Monod model excellently described the decolorization kinetic process with 0.9214 coefficient of correlation (R 2), and the calculated maximum growth µ max) and halfsaturation constant (K s) were 7.023 d −1 and 340.569 ADMI d −1 , respectively. This study revealed that the Klebsiella Pneumonia ABZ11 was highly prolific and such feature may favor a synergistic biodegradation process.

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Section: Tss Mgmentioning

confidence: 99%

Decolorization of Palm Oil Mill Effluent by Klebsiella Pneumonia ABZ11: Remediation Efficacy and Statistical Optimization of Treatment Conditions

et al. 2020

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“…AXJ- M Lignin in black liquor 1.5 g/L, 24 h Extent of lignin degradation: 30% [ 32 ] Stenotrophomonas Stenotrophomonas sp . S2 Alkaline lignin –, 72 h Extent of lignin degradation: 50% [ 46 ] Firmicutes Bacillus Bacillus sp . LD003 Sulfate lignin 0.5 g/L, 72 h Lignin dye decolorization [ 39 ] Bacillus pumilus C6 Sulfate lignin –, 168 h Mw decreased; GGE extent of lignin degradation: 35.10% [ 47 ] Bacillus atrophaeus B7 Sulfate lignin –, 168 h Mw decreased; the degradation extent of GGE was 27.50% Bacillus sp .…”

Section: Lignin-degrading Bacteriamentioning

confidence: 99%

“…strain BL5 Alkali lignin 0.4%, 12 h Extent of lignin degradation: 27.04%; –OH bond stretching between alcohol and phenol; form ethers, phenols and alcohols [ 52 ] Bacillus cereus AH7-7 Sulfate lignin 1 g/L, 144 h Extent of lignin degradation: 25.90% [ 53 ] Bacillus aryabhattai Kraft lignin 0.5 g/L, 336 h The degradation extent was 84%. Absorbance changes at 280 nm [ 54 ] Bacillus cereus Kraft lignin 1 g/L, 72 h Extent of lignin degradation: 89%; decolorization extent: 40% [ 19 ] Bacillus subtilis TR-03 Alkali lignin 2 g/L, 36 h Extent of lignin degradation: 26.72%; decolorization extent: 71.23%; 280 nm absorbance increased; aromatic skeleton spectrum band vibration [ 55 ] Bacillus cereus TR-25 Alkali lignin 2 g/L, 36 h Extent of lignin degradation: 23%; decolorization extent: > 50%; 280 nm absorbance increased; aromatic skeleton spectrum band vibration Bacillus subtilis S11Y Alkaline lignin –, 72 h Extent of lignin degradation: 20% [ 46 ] Bacillus velezensis TSB1 Kraft lignin 0.6 g/L, 144 h Extent of lignin degradation: 40.39%; extent of lignin degradation: 56.16% [ 56 ] Bacillus spinoides Paenibacillus glucanolyticus SLM1 Bioselective lignin 0.2%, 400 h …”

Section: Lignin-degrading Bacteriamentioning

confidence: 99%

Bacterial transformation of lignin: key enzymes and high-value products

Gu,

Qiu,

et al. 2024

Biotechnol Biofuels

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Lignin, a natural organic polymer that is recyclable and inexpensive, serves as one of the most abundant green resources in nature. With the increasing consumption of fossil fuels and the deterioration of the environment, the development and utilization of renewable resources have attracted considerable attention. Therefore, the effective and comprehensive utilization of lignin has become an important global research topic, with the goal of environmental protection and economic development. This review focused on the bacteria and enzymes that can bio-transform lignin, focusing on the main ways that lignin can be utilized to produce high-value chemical products. Bacillus has demonstrated the most prominent effect on lignin degradation, with 89% lignin degradation by Bacillus cereus. Furthermore, several bacterial enzymes were discussed that can act on lignin, with the main enzymes consisting of dye-decolorizing peroxidases and laccase. Finally, low-molecular-weight lignin compounds were converted into value-added products through specific reaction pathways. These bacteria and enzymes may become potential candidates for efficient lignin degradation in the future, providing a method for lignin high-value conversion. In addition, the bacterial metabolic pathways convert lignin-derived aromatics into intermediates through the “biological funnel”, achieving the biosynthesis of value-added products. The utilization of this “biological funnel” of aromatic compounds may address the heterogeneous issue of the aromatic products obtained via lignin depolymerization. This may also simplify the separation of downstream target products and provide avenues for the commercial application of lignin conversion into high-value products.

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“…Four strains were isolated, and they show different properties with regard to temperature, pH, and enzyme activity ( Table 1). 4 …”

Section: Research On Palm Oil Wastementioning

confidence: 99%

Meeting the sustainable development goals in a tropical climate

Zakaria

2020

J Chinese Chemical Soc

Self Cite

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This article reflects on the Federation of Asian Chemical Societies (FACS) Citation Award Lecture delivered in the Industrial Technology Research Institute Symposium on CO 2 Utilization and Green Technology during the 18th Asian Chemical Congress held in Taipei, December 12, 2019. Malaysia produces sizable amounts of palm oil and palm kernel oil, with palm fronds and tree trunks as the main waste. At the Malaysia Japan International Institute of Technology, the biomass was decomposed to produce fine chemicals, used as substrate for mushroom growth, and converted to bio-coke for heat energy. A notable difference has been found regarding the emission of greenhouse gases from a natural peat forest and those from the oil palm plantation converted from peatlands, where in the palm plantation, water table is lowered and aerobic processes occurs, resulting in more CO 2 being released compared to CH 4. The introduction of fertilizers to the plantation resulted in more N 2 O being released. The team has also pioneered a project to plant temperate vegetables. Cooling pipes (16-18 C with circulating water cooled by chiller) were embedded within each thermal conditioning soil plot. Lettuce and radish, the experimental plants, showed good growth in the thermal conditioning soil due to nitrogen-fixing bacteria, which were destroyed at a higher temperature. K E Y W O R D S bioorganic chemistry, green chemistry 2 | CHALLENGES IN RECENT UNSUSTAINABLE PRACTICES Recent unsustainable practice was detected with a toxic pollution incident on March 7, 2019, where illegal chemical waste was dumped at the Kim Kim River in Pasir Gudang of Johor in Malaysia. The marine oil waste emitted flammable methane and benzene fumes. The

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Depolymerization of lignocellulose of oil palm empty fruit bunch by thermophilic microorganisms from tropical climate

Cited by 15 publications

References 41 publications

Decolorization of Palm Oil Mill Effluent by Klebsiella Pneumonia ABZ11: Remediation Efficacy and Statistical Optimization of Treatment Conditions

Decolorization of Palm Oil Mill Effluent by Klebsiella Pneumonia ABZ11: Remediation Efficacy and Statistical Optimization of Treatment Conditions

Bacterial transformation of lignin: key enzymes and high-value products

Meeting the sustainable development goals in a tropical climate

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