New trend of Jebel Chakir landfill leachate pre-treatment by photocatalytic TiO2/Ag nanocomposite prior to fermentation using Candida tropicalis strain
The current study investigates the technical applicability of a combination of photocatalytic process with TiO2/Ag nanocomposite and the biological treatment using Candida tropicalis strain for pollutants removal from mature Jebel Chakir landfill leachate (LFL) under visible light irradiation (33Wcm...
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| Veröffentlicht in: | International biodeterioration & biodegradation 2020-01, Vol.146, p.104829, Article 104829 |
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| creator | Yasmin, Cherni Lobna, Elleuch Mouna, Messaoud Kais, Djebali Mariam, Kasmi Rached, Salhi Abdelwaheb, Chatti Ismail, Trabelsi |
| description | The current study investigates the technical applicability of a combination of photocatalytic process with TiO2/Ag nanocomposite and the biological treatment using Candida tropicalis strain for pollutants removal from mature Jebel Chakir landfill leachate (LFL) under visible light irradiation (33Wcm−2). Interestingly, after the nanocomposite treatment, the degradation rate achieved under the optimum conditions 70, 71.25 and 49.1% for COD, TOC, and NH4+-N, respectively. Thereafter, the biological process was applied as a second treatment stage in order to enhance the quality of pre-treated LFL. About 90% of COD, 84.61% of TOC and 75% of NH4+-N were removed after the combined process. Furthermore, heavy metals, especially, Fe, Zn, Cu, Cd, and Pb were significantly reduced with the average removal rates of 50, 63.8, 83, 95 and 95%, respectively. The photocatalytic efficiency in organic pollutants removal was consistently higher than 60% after five cycles without any evident change and deactivation of nanocomposite. The overall results proved that TiO2/Ag exhibited an important photocatalytic activity and an excellent recyclability. In addition, the combination of TiO2/Ag photocatalytic process with biological treatment by C. tropicalis for toxic compounds removal from mature LFL may provide a more comprehensive potential for mature LFL treatment.
[Display omitted]
•Synthesis and characterization of TiO2/Ag nanocomposite was carried out.•Photocatalytic pre-treatment of mature LFL using Simplex design has been performed.•TiO2/Ag combined with biological treatment is effective for LFL treatment.•TiO2/Ag nanocomposite exhibit excellent recyclability. |
| doi_str_mv | 10.1016/j.ibiod.2019.104829 |
| format | Article |
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[Display omitted]
•Synthesis and characterization of TiO2/Ag nanocomposite was carried out.•Photocatalytic pre-treatment of mature LFL using Simplex design has been performed.•TiO2/Ag combined with biological treatment is effective for LFL treatment.•TiO2/Ag nanocomposite exhibit excellent recyclability.</description><identifier>ISSN: 0964-8305</identifier><identifier>EISSN: 1879-0208</identifier><identifier>DOI: 10.1016/j.ibiod.2019.104829</identifier><language>eng</language><publisher>Barking: Elsevier Ltd</publisher><subject>Biological activity ; Biological treatment ; Cadmium ; Candida tropicalis ; Catalytic activity ; Combined process ; Copper ; Deactivation ; Fermentation ; Heavy metals ; Iron ; Irradiation ; Landfill ; Landfill leachate ; Landfills ; Leachates ; Lead ; Light irradiation ; Nanocomposites ; Photocatalysis ; Photoreactor ; Pollutant removal ; Pollutants ; Pretreatment ; Radiation ; Recyclability ; Silver ; TiO2/Ag ; Titanium dioxide ; Waste disposal sites ; Waste treatment ; Wastewater treatment ; Water pollution treatment ; Zinc</subject><ispartof>International biodeterioration & biodegradation, 2020-01, Vol.146, p.104829, Article 104829</ispartof><rights>2019 Elsevier Ltd</rights><rights>Copyright Elsevier BV Jan 2020</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c331t-f6036da89dd9004fca3211f5814a42a79c4b2eb0392feb9475d993861273a0193</citedby><cites>FETCH-LOGICAL-c331t-f6036da89dd9004fca3211f5814a42a79c4b2eb0392feb9475d993861273a0193</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.ibiod.2019.104829$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3550,27924,27925,45995</link.rule.ids></links><search><creatorcontrib>Yasmin, Cherni</creatorcontrib><creatorcontrib>Lobna, Elleuch</creatorcontrib><creatorcontrib>Mouna, Messaoud</creatorcontrib><creatorcontrib>Kais, Djebali</creatorcontrib><creatorcontrib>Mariam, Kasmi</creatorcontrib><creatorcontrib>Rached, Salhi</creatorcontrib><creatorcontrib>Abdelwaheb, Chatti</creatorcontrib><creatorcontrib>Ismail, Trabelsi</creatorcontrib><title>New trend of Jebel Chakir landfill leachate pre-treatment by photocatalytic TiO2/Ag nanocomposite prior to fermentation using Candida tropicalis strain</title><title>International biodeterioration & biodegradation</title><description>The current study investigates the technical applicability of a combination of photocatalytic process with TiO2/Ag nanocomposite and the biological treatment using Candida tropicalis strain for pollutants removal from mature Jebel Chakir landfill leachate (LFL) under visible light irradiation (33Wcm−2). Interestingly, after the nanocomposite treatment, the degradation rate achieved under the optimum conditions 70, 71.25 and 49.1% for COD, TOC, and NH4+-N, respectively. Thereafter, the biological process was applied as a second treatment stage in order to enhance the quality of pre-treated LFL. About 90% of COD, 84.61% of TOC and 75% of NH4+-N were removed after the combined process. Furthermore, heavy metals, especially, Fe, Zn, Cu, Cd, and Pb were significantly reduced with the average removal rates of 50, 63.8, 83, 95 and 95%, respectively. The photocatalytic efficiency in organic pollutants removal was consistently higher than 60% after five cycles without any evident change and deactivation of nanocomposite. The overall results proved that TiO2/Ag exhibited an important photocatalytic activity and an excellent recyclability. In addition, the combination of TiO2/Ag photocatalytic process with biological treatment by C. tropicalis for toxic compounds removal from mature LFL may provide a more comprehensive potential for mature LFL treatment.
[Display omitted]
•Synthesis and characterization of TiO2/Ag nanocomposite was carried out.•Photocatalytic pre-treatment of mature LFL using Simplex design has been performed.•TiO2/Ag combined with biological treatment is effective for LFL treatment.•TiO2/Ag nanocomposite exhibit excellent recyclability.</description><subject>Biological activity</subject><subject>Biological treatment</subject><subject>Cadmium</subject><subject>Candida tropicalis</subject><subject>Catalytic activity</subject><subject>Combined process</subject><subject>Copper</subject><subject>Deactivation</subject><subject>Fermentation</subject><subject>Heavy metals</subject><subject>Iron</subject><subject>Irradiation</subject><subject>Landfill</subject><subject>Landfill leachate</subject><subject>Landfills</subject><subject>Leachates</subject><subject>Lead</subject><subject>Light irradiation</subject><subject>Nanocomposites</subject><subject>Photocatalysis</subject><subject>Photoreactor</subject><subject>Pollutant removal</subject><subject>Pollutants</subject><subject>Pretreatment</subject><subject>Radiation</subject><subject>Recyclability</subject><subject>Silver</subject><subject>TiO2/Ag</subject><subject>Titanium dioxide</subject><subject>Waste disposal sites</subject><subject>Waste treatment</subject><subject>Wastewater treatment</subject><subject>Water pollution treatment</subject><subject>Zinc</subject><issn>0964-8305</issn><issn>1879-0208</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2020</creationdate><recordtype>article</recordtype><recordid>eNp9kU1vEzEQhi0EEqHwC7hY4rypPza76wOHKuJTVXspZ2vWnm0mbOzFdqjyS_i7OA1nTiON3mdm3nkZey_FWgrZXe_XNFL0ayWkqZ12UOYFW8mhN41QYnjJVsJ0bTNosXnN3uS8F0LIzSBX7M8dPvGSMHgeJ_4dR5z5dgc_KfEZgp9onvmM4HZQkC8Jm6qFcsBQ-Hjiyy6W6KDAfCrk-APdq-ubRx4gRBcPS8z0TFFMvEQ-YTqDUCgGfswUHvm27iAP9YK4kIOZMs8lAYW37NUEc8Z3_-oV-_H508P2a3N7_-Xb9ua2cVrL0kyd0J2HwXhvhGgnB1pJOVVrLbQKeuPaUeEotFETjqbtN94YPXRS9Rrqs_QV-3CZu6T464i52H08plBXWqVVPxhl1Kaq9EXlUsw54WSrqQOkk5XCnhOwe_ucgD0nYC8JVOrjhcJq4DdhstkRBoeeErpifaT_8n8BoheR_A</recordid><startdate>202001</startdate><enddate>202001</enddate><creator>Yasmin, Cherni</creator><creator>Lobna, Elleuch</creator><creator>Mouna, Messaoud</creator><creator>Kais, Djebali</creator><creator>Mariam, Kasmi</creator><creator>Rached, Salhi</creator><creator>Abdelwaheb, Chatti</creator><creator>Ismail, Trabelsi</creator><general>Elsevier Ltd</general><general>Elsevier BV</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7QF</scope><scope>7QL</scope><scope>7QO</scope><scope>7QQ</scope><scope>7SC</scope><scope>7SE</scope><scope>7SP</scope><scope>7SR</scope><scope>7T7</scope><scope>7TA</scope><scope>7TB</scope><scope>7U5</scope><scope>8BQ</scope><scope>8FD</scope><scope>C1K</scope><scope>F28</scope><scope>FR3</scope><scope>H8D</scope><scope>H8G</scope><scope>JG9</scope><scope>JQ2</scope><scope>KR7</scope><scope>L7M</scope><scope>L~C</scope><scope>L~D</scope><scope>M7N</scope><scope>P64</scope></search><sort><creationdate>202001</creationdate><title>New trend of Jebel Chakir landfill leachate pre-treatment by photocatalytic TiO2/Ag nanocomposite prior to fermentation using Candida tropicalis strain</title><author>Yasmin, Cherni ; 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Interestingly, after the nanocomposite treatment, the degradation rate achieved under the optimum conditions 70, 71.25 and 49.1% for COD, TOC, and NH4+-N, respectively. Thereafter, the biological process was applied as a second treatment stage in order to enhance the quality of pre-treated LFL. About 90% of COD, 84.61% of TOC and 75% of NH4+-N were removed after the combined process. Furthermore, heavy metals, especially, Fe, Zn, Cu, Cd, and Pb were significantly reduced with the average removal rates of 50, 63.8, 83, 95 and 95%, respectively. The photocatalytic efficiency in organic pollutants removal was consistently higher than 60% after five cycles without any evident change and deactivation of nanocomposite. The overall results proved that TiO2/Ag exhibited an important photocatalytic activity and an excellent recyclability. In addition, the combination of TiO2/Ag photocatalytic process with biological treatment by C. tropicalis for toxic compounds removal from mature LFL may provide a more comprehensive potential for mature LFL treatment.
[Display omitted]
•Synthesis and characterization of TiO2/Ag nanocomposite was carried out.•Photocatalytic pre-treatment of mature LFL using Simplex design has been performed.•TiO2/Ag combined with biological treatment is effective for LFL treatment.•TiO2/Ag nanocomposite exhibit excellent recyclability.</abstract><cop>Barking</cop><pub>Elsevier Ltd</pub><doi>10.1016/j.ibiod.2019.104829</doi></addata></record> |
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| subjects | Biological activity Biological treatment Cadmium Candida tropicalis Catalytic activity Combined process Copper Deactivation Fermentation Heavy metals Iron Irradiation Landfill Landfill leachate Landfills Leachates Lead Light irradiation Nanocomposites Photocatalysis Photoreactor Pollutant removal Pollutants Pretreatment Radiation Recyclability Silver TiO2/Ag Titanium dioxide Waste disposal sites Waste treatment Wastewater treatment Water pollution treatment Zinc |
| title | New trend of Jebel Chakir landfill leachate pre-treatment by photocatalytic TiO2/Ag nanocomposite prior to fermentation using Candida tropicalis strain |
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