A new insight into highly contaminated landfill leachate treatment using Kefir grains pre-treatment combined with Ag-doped TiO2 photocatalytic process

Elleuch, Lobna; Messaoud, Mouna; Djebali, Kais; Attafi, Marwa; Cherni, Yasmin; Kasmi, Mariam; Elaoud, Anis; Trabelsi, Ismaîl; Chatti, Abdelwaheb

doi:10.1016/j.jhazmat.2019.121119

Cited by 73 publications

(29 citation statements)

References 52 publications

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“…(2020) reported the cost effectiveness of kefir grains as a biological pretreatment for landfill leachate. Overall, TOC, COD,

{NH}_{4}^{+} - N

, and

{PO}_{4}^{3 -}

decreased, respectively, by 93%, 83.33%, 70%, and 88.25% with respect to the raw effluent (24,000 mg/L), thus reflecting the resistance of these grains to the toxicity of leachate (Elleuch et al., 2020). Same conclusions were reached by Mohd et al (2017) and Wang et al.…”

Section: Resultsmentioning

confidence: 99%

“…Figure 1 presented the obtained strains after visualization under ultraviolet light and the resulting profiles were determined by digital image capturing using a CCD UVI pro Platinum 1.1. Recently, Elleuch et al (2020) reported the cost effectiveness of kefir grains as a biological pretreatment for landfill leachate. Overall, TOC, COD, NH + 4 − N, and PO 3− 4 decreased, respectively, by 93%, 83.33%, 70%, and 88.25% with respect to the raw effluent (24,000 mg/L), thus reflecting the resistance of these grains to the toxicity of leachate (Elleuch et al, 2020).…”

Section: Strain Selectionmentioning

confidence: 99%

“…Recently, Elleuch et al (2020) reported the cost effectiveness of kefir grains as a biological pretreatment for landfill leachate. Overall, TOC, COD, NH + 4 − N, and PO 3− 4 decreased, respectively, by 93%, 83.33%, 70%, and 88.25% with respect to the raw effluent (24,000 mg/L), thus reflecting the resistance of these grains to the toxicity of leachate (Elleuch et al, 2020). Same conclusions were reached by Mohd et al (2017) and Wang et al (2018) showing the efficiency of these genera of lactic acid bacteria and the yeast Kluyveromyces marwianus for the removal of organic matter and toxic substances from wastewaters.…”

Section: Strain Selectionmentioning

confidence: 99%

“…As reported in the literature, several investigations have been demonstrated that some microorganisms are able to degrade dissolved organic matter contained in the wastewater (Sosa et al, 2017; Wang et al., 2018; Westlund & Yargeau, 2017). However, it is worthy to highlight that a few researches have focused on

{NH}_{4}^{+} - N

abatement rate of LFL using bioremediation process (Cherni et al, 2020; Elleuch et al., 2020). In fact, several microorganisms have been tested for the assimilation of different heavy metals (Abbas & Badr, 2015; Mohd et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

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Mixed culture of Lactococcus lactis and Kluyveromyces marxianus isolated from kefir grains for pollutants load removal from Jebel Chakir leachate

Cherni

Botta

Kasmi

et al. 2020

Water Environment Research

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The wastewater from the dumping site usually contains high pollutant levels. Biological process and physico-chemical treatments are among several technologies for wastewater treatment. Using microorganisms in the treatment of landfill leachate is an emerging research issue. Furthermore, bioremediation is a feasible approach for pollutants removal from landfill leachate which would provide an efficient way to resolve the issue of landfill leachate. In this study, the performance of yeast and bacteria isolated from kefir grains was assessed for landfill leachate treatment. Kefir grains microbial composition was evaluated by molecular approaches (Rep-PCR and 16S rRNA gene sequencing). The obtained outcomes denoted that high concentrations of lactic acid bacteria and yeast populations (over 10 7 CFU/ml) were found in the kefir grains and were essentially composed of Lactococcus lactis, Lactobaccillus kefirien, bacillus sp., L. lactis, and Kluyveromyces marxianus. The co-culture with 1% of inoculum size was demonstrated as the most efficient in the degradation of different contaminants. The overall abatement rate of chemical oxygen demand (COD), ammonium nitrogen (NH + 4 − N), and salinity were 75.8%, 85.9%, and 75.13%, respectively. The bioremediation process resulted in up of 75% removal efficiency of Ni and Cd, and a 73.45%, 68.53%, and a 58.17% removal rates of Cu, Pb, and Fe, respectively. The research findings indicate the performance of L. lactis and K. marxianus co-culture isolated from kefir grains for the bioremediation of LFL. © 2020 Water Environnment Federatio • Practitioner Points • Isolation and identification of microorganisms from kefir grains was carried out. • Biological treatment of LFL using monoculture of (Lactoccocus lactis; Kluyveromyces marxianus) and co-culture (5% of L. lactis and 5% K. marxianus) has been performed. • Biological treatment using co-culture strain is an effective approach to remove organic matter, NH + 4 − N and heavy metals.

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“…(2020) reported the cost effectiveness of kefir grains as a biological pretreatment for landfill leachate. Overall, TOC, COD,

{NH}_{4}^{+} - N

, and

{PO}_{4}^{3 -}

Section: Resultsmentioning

confidence: 99%

Section: Strain Selectionmentioning

confidence: 99%

Section: Strain Selectionmentioning

confidence: 99%

{NH}_{4}^{+} - N

Section: Introductionmentioning

confidence: 99%

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Mixed culture of Lactococcus lactis and Kluyveromyces marxianus isolated from kefir grains for pollutants load removal from Jebel Chakir leachate

Cherni

Botta

Kasmi

et al. 2020

Water Environment Research

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“…Also, this decrease has a slight effect on solution toxicity [13]. The Ag‐doped TiO 2 photocatalytic process increases the overall removal efficiencies to 98, and 96% of TOC and COD, respectively [14].…”

Section: Introductionmentioning

confidence: 99%

Shewanella oneidensis MR‐1 in situ biosynthesis of Ag nanoparticles on TiO ₂ nanotubes with enhanced photocatalytic performance

Song

Yang

Wang

et al. 2020

Micro & Nano Letters

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Metal‐facilitated Photocatalytic Nanohybrids: Rational Design and Promising Environmental Applications

Guan

Zhang

Neng

et al. 2021

Chemistry An Asian Journal

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As a promising technique to potentially address the energy crisis and environmental issues, photocatalysis has been reported widely to exhibit various outstanding behaviors in production of new fuels/chemicals and treatment of contaminants. The photocatalytic performance is extremely dependent on the used photocatalysts, so that the design and preparation of efficient photocatalysts are critically important for significantly improving the photocatalytic activity. Among various strategies, the hybridization of metal with semiconductors has recently been attracting more and more research interest owing to their expended spectral absorption, promoted transferring rate of charge carriers and Plasmon‐enhanced effect. In this minireview, the metal‐facilitated hybrid photocatalysts are overviewed comprehensively to first reveal unique functions of metals in improvement of photoactivity and summarize the emerging metal‐involved hybrid systems. Subsequently, the synthetic methods towards hybrid photocatalysts are introduced and their practical applications are emphasized in environmental remediation including degradation of organic pollutants, conversion of harmful gases, treatment of heavy metal ions and sterilization of bacteria. At the end, the challenges for industrializing these hybrid photocatalysts are discussed carefully and future development is suggested rationally.

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A new insight into highly contaminated landfill leachate treatment using Kefir grains pre-treatment combined with Ag-doped TiO2 photocatalytic process

Cited by 73 publications

References 52 publications

Mixed culture of Lactococcus lactis and Kluyveromyces marxianus isolated from kefir grains for pollutants load removal from Jebel Chakir leachate

Mixed culture of Lactococcus lactis and Kluyveromyces marxianus isolated from kefir grains for pollutants load removal from Jebel Chakir leachate

Shewanella oneidensis MR‐1 in situ biosynthesis of Ag nanoparticles on TiO ₂ nanotubes with enhanced photocatalytic performance

Metal‐facilitated Photocatalytic Nanohybrids: Rational Design and Promising Environmental Applications

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A new insight into highly contaminated landfill leachate treatment using Kefir grains pre-treatment combined with Ag-doped TiO2 photocatalytic process

Cited by 73 publications

References 52 publications

Mixed culture of Lactococcus lactis and Kluyveromyces marxianus isolated from kefir grains for pollutants load removal from Jebel Chakir leachate

Mixed culture of Lactococcus lactis and Kluyveromyces marxianus isolated from kefir grains for pollutants load removal from Jebel Chakir leachate

Shewanella oneidensis MR‐1 in situ biosynthesis of Ag nanoparticles on TiO 2 nanotubes with enhanced photocatalytic performance

Metal‐facilitated Photocatalytic Nanohybrids: Rational Design and Promising Environmental Applications

Contact Info

Product

Resources

About

Shewanella oneidensis MR‐1 in situ biosynthesis of Ag nanoparticles on TiO ₂ nanotubes with enhanced photocatalytic performance