Anaerobic membrane bioreactor for the treatment of leachates from Jebel Chakir discharge in Tunisia

Zayen, Amal; Mnif, Sami; Aloui, Fathi; Fki, Firas; Loukil, Slim; Bouaziz, Mohamed; Sayadi, Sami

doi:10.1016/j.jhazmat.2010.01.004

Cited by 84 publications

(35 citation statements)

References 17 publications

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“…Soluble chemical oxygen demand (COD) was determined according to the method of Knechtel (1978). The five-day biological oxygen demand (BOD 5 ) was determined by the manometric method using a respirometer (OxiTop Ò Box) a described by Zayen et al (2010). Total organic carbon was determined after dry combustion using a TOC analyzer -V CPH , SHIMADZU (Gouider et al 2010).…”

Section: Physicochemical Analyses and Analytical Methodsmentioning

confidence: 99%

Biodegradation of malodorous mercaptans by a novel Staphylococcus capitis strain isolated from gas-washing wastewaters of the Tunisian Chemical Group

Chebbi

Jaoua

Loukil

et al. 2015

Int. J. Environ. Sci. Technol.

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There are increasing concerns over the harmful effects of the phosphate industry on human health and quality of life worldwide, including the Tunisian Chemical Group (GCT) in Sfax, which generates various malodorous gas fractions, such as hydrogen sulfide (H 2 S) and fetid mercaptans, causing nuisance to employees and local residents. Accordingly, the present study aimed to investigate the ability of an adapted microbial consortium isolated from the gas-washing wastewaters (GWWs) generated from GCT to degrade hazardous and malodorous mercaptans. A novel mesophilic bacterial strain (SH6), which was noted to display particularly high mercaptan degradation potential, was isolated from the adapted consortium growing on those GWWs and several malodorous mercaptans after enrichment on 1-dodecanethiol. The results from 16 rRNA gene sequencing and identity analysis revealed that the SH6 isolate belonged to Staphylococcus genus, with a high sequence similarity to Staphylococcus capitis (99.7 %). The SH6 strain was able to completely degrade 1-dodecanethiol, used as the sole carbon and energy source, after 72 h of incubation at 37°C and 180 rpm. A decrease in the surface tension of cell-free culture supernatants was observed during the oxidation of dodecanethiol, suggesting the production of surface-active compounds. The stain was also able to grow on other mercaptans, such as 1,8-octanedithiol and 2,3-butanedithiol, which further supports its potential candidacy for application in the bioremediation of mercaptan-contaminated sites. Overall, the findings of the present study indicate that the SH6 strain might offer promising opportunities for the development of more adapted, efficient and cost-effective bio-disodoration strategies.

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Section: Physicochemical Analyses and Analytical Methodsmentioning

confidence: 99%

Biodegradation of malodorous mercaptans by a novel Staphylococcus capitis strain isolated from gas-washing wastewaters of the Tunisian Chemical Group

Chebbi

Jaoua

Loukil

et al. 2015

Int. J. Environ. Sci. Technol.

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“…The treatment efficiency was high with an average COD reduction of 90% and biogas yield of 0.46 l biogas per g COD removed [4]. To reduce the membrane fouling and strengthen performance of the AnMBR, adding filter was reported to be a promising option, it has been confirmed that adding granular activated carbon (GAC) to an AnMBR resulted in a reduction in the cake layer resistance by approximately 53.5% [7] [51].…”

Section: Anmbr Performancementioning

confidence: 99%

Anaerobic Membrane Bioreactor as Highly Efficient and Reliable Technology for Wastewater Treatment—A Review

Jain¹

2018

ACES

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In this review paper, Anaerobic Membrane Bioreactor (AnMBR) is considering as highly efficient and reliable technology for organic material removal from wastewater with no additional energy requirement for aeration. AnMBR is a combination of conventional anaerobic technology and modern membrane system. AnMBR is cost effective alternative technology with pros of anaerobic microbial activity because Methogenic microorganism can convert organic pollutant load of wastewater into renewable energy in the form of methane rich biogas, this conversion is mainly done by transformation of organic matter into energy by high chemical oxygen demand (COD), total suspended solid (TSS) and pathogens removal. Methane rich biogas can be used as a storable source of supplemental energy for the production of heat or power thus AnMBR technology provides improved effluent quality, reliability, and efficiency over the other traditional technologies. This review paper is included the overview of AnMBR, the advantages over other wastewater treatment technology, operational constraints and the concerned factors that has affected the performances of implemented systems, applications of AnMBR for various types of wastewaters, research and development summary and future perspective for further research.

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“…Hence several studies examined the anMBR performance for the treatment of leachate or leachate-WW mixture under various operating conditions (i.e. SRT, HRT, temperature, OLR, flux…; Xie et al 2014;Zayen et al 2015;Taskan and Hasar 2012;Trzcinski et al 2011;Zayen et al 2010;Trzcinski and Stuckey 2009a, b;Bohdziewicz et al 2008; while others investigated the accompanying microbial populations Trzcinski and Stuckey 2012). Although AnMBRs reportedly tolerate higher ammonium concentration than aerobic MBR (Taskan and Hasar 2012), they are more prone to fouling than the latter (Saddoud and Sayadi 2007), hence the flux decline during operation (Taskan and Hasar 2012) in addition to the need for frequent cleaning were reportedly the most limiting factors in the application of anMBRs.…”

Section: Variations In Mbr Technologymentioning

confidence: 99%

Membrane bioreactor technology for leachate treatment at solid waste landfills

Hashisho

El‐Fadel

2016

Rev Environ Sci Biotechnol

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Controlled landfilling remains a commonly applied method for municipal solid waste disposal with leachate generation being an inevitable consequence of the decomposition of the waste and the percolation of water through decomposing waste. The membrane bioreactor (MBR) technology has evolved into an effective process in treating such high strength wastewater streams because of its ability to retain high biomass concentration through membrane separation. This paper presents a critical review of the application of the MBR technology for the treatment of leachate and evaluates its performance in this context while highlighting factors affecting MBR operation. The paper concludes with outlining existing gaps and future research needs to improve the understanding and performance of the MBR technology for leachate treatment.

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Anaerobic membrane bioreactor for the treatment of leachates from Jebel Chakir discharge in Tunisia

Cited by 84 publications

References 17 publications

Biodegradation of malodorous mercaptans by a novel Staphylococcus capitis strain isolated from gas-washing wastewaters of the Tunisian Chemical Group

Biodegradation of malodorous mercaptans by a novel Staphylococcus capitis strain isolated from gas-washing wastewaters of the Tunisian Chemical Group

Anaerobic Membrane Bioreactor as Highly Efficient and Reliable Technology for Wastewater Treatment—A Review

Membrane bioreactor technology for leachate treatment at solid waste landfills

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