Synthesis of Mesoporous Carbons from Date Pits for the Adsorption of Large Molecular Weight Micropollutants in Wastewater

Handle URI:
http://hdl.handle.net/10754/297035
Title:
Synthesis of Mesoporous Carbons from Date Pits for the Adsorption of Large Molecular Weight Micropollutants in Wastewater
Authors:
Al Jeffrey, Ahmed
Abstract:
Efficient reuse of waste water requires removal of micro-pollutants from waste water streams by affordable and sustainable methods. Activated carbon is considered a powerful adsorbent due to its high surface area and low cost of treatment, compared to other expensive methods such as membrane filtration. Producing activated carbon with larger mesoporosity (>2nm) is of particular interest in industry in the removal of larger molecular sized pollutants. This study reports the synthesis of mesoporous activated carbons from a nonsoluble biomass precursor (date-pits) along with chemical activation using ZnCl2. Thus, produced activated carbon showed high surface area and large mesopore volume up to 1571 m2/g and 2.00 cm3/g respectively. In addition, the pore size of the product was as high as 9.30 nm. As a method of verification, HRTEM (Highresolution transmission electron microscopy) was used to directly authenticate the pore size of the synthesized activated carbons. Tannic acid and atrazine were used as model waste water pollutants and the adsorption capability of the produced activated carbon for these pollutants were evaluated and compared to a commercial mesoporous carbon: G60 from Norit. The results showed that the sorption capacity of produced activated carbon for tannic acid was 2 times that of G60 while the sorption capacity of produced activated carbon for atrazine was lower than that of G60. The activated carbon was also evaluated for adsorption of real secondary effluent municipal wastewater and the results suggest that the produced activated carbon was able to sorb a greater amount of biopolymers than G60. These results demonstrate that the thus-produced activated carbon may be a promising sorbent for waste water treatment.
Advisors:
Wang, Peng ( 0000-0003-0856-0865 )
Committee Member:
Amy, Gary L.; Gehring, Christoph A ( 0000-0003-4355-4591 ) ; Xiong, Liming ( 0000-0001-8099-0806 )
KAUST Department:
Biological and Environmental Sciences and Engineering (BESE) Division
Program:
Bioscience
Issue Date:
Jul-2013
Type:
Thesis
Appears in Collections:
Bioscience Program; Theses; Biological and Environmental Sciences and Engineering (BESE) Division

Full metadata record

DC FieldValue Language
dc.contributor.advisorWang, Pengen
dc.contributor.authorAl Jeffrey, Ahmeden
dc.date.accessioned2013-07-24T23:52:22Z-
dc.date.available2013-07-24T23:52:22Z-
dc.date.issued2013-07en
dc.identifier.urihttp://hdl.handle.net/10754/297035en
dc.description.abstractEfficient reuse of waste water requires removal of micro-pollutants from waste water streams by affordable and sustainable methods. Activated carbon is considered a powerful adsorbent due to its high surface area and low cost of treatment, compared to other expensive methods such as membrane filtration. Producing activated carbon with larger mesoporosity (>2nm) is of particular interest in industry in the removal of larger molecular sized pollutants. This study reports the synthesis of mesoporous activated carbons from a nonsoluble biomass precursor (date-pits) along with chemical activation using ZnCl2. Thus, produced activated carbon showed high surface area and large mesopore volume up to 1571 m2/g and 2.00 cm3/g respectively. In addition, the pore size of the product was as high as 9.30 nm. As a method of verification, HRTEM (Highresolution transmission electron microscopy) was used to directly authenticate the pore size of the synthesized activated carbons. Tannic acid and atrazine were used as model waste water pollutants and the adsorption capability of the produced activated carbon for these pollutants were evaluated and compared to a commercial mesoporous carbon: G60 from Norit. The results showed that the sorption capacity of produced activated carbon for tannic acid was 2 times that of G60 while the sorption capacity of produced activated carbon for atrazine was lower than that of G60. The activated carbon was also evaluated for adsorption of real secondary effluent municipal wastewater and the results suggest that the produced activated carbon was able to sorb a greater amount of biopolymers than G60. These results demonstrate that the thus-produced activated carbon may be a promising sorbent for waste water treatment.en
dc.language.isoenen
dc.subjectmesoporousen
dc.subjectcarbonen
dc.subjectdate-pitsen
dc.subjectadsorptionen
dc.subjectmicropollutantsen
dc.subjectwaste wateren
dc.titleSynthesis of Mesoporous Carbons from Date Pits for the Adsorption of Large Molecular Weight Micropollutants in Wastewateren
dc.typeThesisen
dc.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Divisionen
thesis.degree.grantorKing Abdullah University of Science and Technologyen_GB
dc.contributor.committeememberAmy, Gary L.en
dc.contributor.committeememberGehring, Christoph Aen
dc.contributor.committeememberXiong, Limingen
thesis.degree.disciplineBioscienceen
thesis.degree.nameMaster of Scienceen
dc.person.id113067en
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