Enhanced Biohydrogen Production from Citrus Wastewater Using Anaerobic Sludge Pretreated by an Electroporation Technique

Karim, Ahasanul; Islam, M. Amirul; Faizal, C. K. M.; Yousuf, Abu; Howarth, Martin; Dubey, Bipro; Cheng, Chin Kui; Khan, Maksudur R.

doi:10.1021/acs.iecr.8b03586

Cited by 22 publications

(4 citation statements)

References 54 publications

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“…It is clearly seen in the FESEM image that EP damaged the microbial cells by creating cleavages on the cell surface during the lipid-extraction process. Similar findings were observed in our previous study, where the higher treatment intensity induced irreversible permeabilization of the cell wall leading to its disruption by triggering pore formation. , A similar observation was reported by Sheng et al, where EP treatment produced a less resistant barrier toward the intrusion of organic solvent; hence, the lipid extraction was enhanced. Thus, the EP technique led to enhanced cell disruption and, subsequently, to a higher lipid yield in the medium.…”

Section: Resultssupporting

confidence: 92%

Microbial Lipid Accumulation through Bioremediation of Palm Oil Mill Wastewater by Bacillus cereus

Karim

Islam

Yousuf

et al. 2019

ACS Sustainable Chem. Eng.

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The wastewater burden and increased energy demands have spurred interest in finding possible solutions that could concomitantly address both issues. Microbial lipid production, together with the bioremediation of wastewater, could be a promising solution to address both problems. In this context, the present study was designed to evaluate the potential of Bacillus cereus (B. cereus) for accumulating microbial lipids through the bioremediation of palm oil mill effluent (POME) in batch mode fermentation. Different dilutions of POME media (25%, 50%, 75%, and 100%) were used to determine the optimum POME concentration for enabling the maximum yield of biomass and maximum lipid production. The 50% (v/v) POME was found to have potential for the highest biomass growth (8.09 g/L) and lipid accumulation (1.46 g/L), with a lipid content of 18.04% (dry weight basis). B. cereus accumulated a higher biomass and lipid content than other bacterial strains, such as Rhodococcus opacus and Pseudomonas aeruginosa, under similar conditions. On the other hand, the degree of bioremediation was assessed by evaluating several wastewater parameters and determining the seed germination index (GI) of Vigna radiata. POME treated with B. cereus displayed higher GI values than the untreated samples due to the significant remediation of detrimental organics present in the POME. This finding was further confirmed by the substantial reduction in pollution load, particularly in chemical oxygen demand (COD) and biochemical oxygen demand (BOD) for 50% POME, thus demonstrating removal efficiencies of 79.35% and 72.65%, respectively. Therefore, the results of this study suggest that B. cereus cultivation in POME could be a promising technique for attaining higher biomass growth and lipid production in conjunction with the bioremediation of POME. The approach of achieving dual objectives that is utilized in the present study provides a novel strategy for palm oil millers.

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Section: Resultssupporting

confidence: 92%

Microbial Lipid Accumulation through Bioremediation of Palm Oil Mill Wastewater by Bacillus cereus

Karim

Islam

Yousuf

et al. 2019

ACS Sustainable Chem. Eng.

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“…The authors demonstrated that CWWs showed significantly higher potential for H2 production when compared to synthetic and domestic wastewaters, resulting in a H2 bioconversion efficiency close to 73%. In another study, the hydrogen production from CWWs was maximized by applying an electroporation treatment at different intensity levels (30-120 kWh m -3 ) to achieve methanogen inactivation (Karim et al, 2019).…”

Section: Cwws Anaerobic Treatmentmentioning

confidence: 99%

Challenges and opportunities for citrus wastewater management and valorisation: A review

Lucia

Laudicina

Badalucco

et al. 2022

Journal of Environmental Management

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“…Despite the limited fundamental research for fully understanding the ways that ohmic heating and MEF can assist conventional fermentation methods, it seems that ohmic heating can affect the fermentation process through three main ways (Figure 4). First, electrical treatments can affect the substrates that microorganisms converting to the microbial metabolic products (Gavahian, Munekata, et al, 2019;Karim et al, 2019;Kim et al, 2019).…”

Section: Mechanisms Involved In Mef-and Ohmic-assisted Fermentationsmentioning

confidence: 99%

Moderate electric fields and ohmic heating as promising fermentation tools

Gavahian

Tiwari

2020

Innovative Food Science & Emerging Technologies

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Enhanced Biohydrogen Production from Citrus Wastewater Using Anaerobic Sludge Pretreated by an Electroporation Technique

Abstract: Maksudur (2018). Enhanced biohydrogen production from citrus wastewater using anaerobic sludge pretreated by an electroporation technique. Industrial & engineering chemistry research, 58 (2), 573-580.

Cited by 22 publications

References 54 publications

Microbial Lipid Accumulation through Bioremediation of Palm Oil Mill Wastewater by Bacillus cereus

Microbial Lipid Accumulation through Bioremediation of Palm Oil Mill Wastewater by Bacillus cereus

Challenges and opportunities for citrus wastewater management and valorisation: A review

Moderate electric fields and ohmic heating as promising fermentation tools

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