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Paraquat adsorption on NaX and Al-MCM-41

2015; Pergamon Press; Volume: 71; Issue: 9 Linguagem: Inglês

10.2166/wst.2015.100

1996-9732

Wina Rongchapo, Krittanun Deekamwong, Sirinuch Loiha, Sanchai Prayoonpokarach, Jatuporn Wittayakun,

Advanced oxidation water treatment

Research Article| March 05 2015 Paraquat adsorption on NaX and Al-MCM-41 Wina Rongchapo; Wina Rongchapo 1School of Chemistry, Institute of Science, Suranaree University of Technology, Nakhon Ratchasima, 30000, Thailand Search for other works by this author on: This Site PubMed Google Scholar Krittanun Deekamwong; Krittanun Deekamwong 1School of Chemistry, Institute of Science, Suranaree University of Technology, Nakhon Ratchasima, 30000, Thailand Search for other works by this author on: This Site PubMed Google Scholar Sirinuch Loiha; Sirinuch Loiha 2Department of Chemistry, Faculty of Science, Khon Kaen University, Khon Kaen 40002, Thailand Search for other works by this author on: This Site PubMed Google Scholar Sanchai Prayoonpokarach; Sanchai Prayoonpokarach 1School of Chemistry, Institute of Science, Suranaree University of Technology, Nakhon Ratchasima, 30000, Thailand Search for other works by this author on: This Site PubMed Google Scholar Jatuporn Wittayakun Jatuporn Wittayakun 1School of Chemistry, Institute of Science, Suranaree University of Technology, Nakhon Ratchasima, 30000, Thailand E-mail: jatuporn@sut.ac.th Search for other works by this author on: This Site PubMed Google Scholar Water Sci Technol (2015) 71 (9): 1347–1353. https://doi.org/10.2166/wst.2015.100 Article history Received: December 21 2014 Accepted: February 16 2015 Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Cite Icon Cite Permissions Search Site Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentAll JournalsThis Journal Search Advanced Search Citation Wina Rongchapo, Krittanun Deekamwong, Sirinuch Loiha, Sanchai Prayoonpokarach, Jatuporn Wittayakun; Paraquat adsorption on NaX and Al-MCM-41. Water Sci Technol 1 May 2015; 71 (9): 1347–1353. doi: https://doi.org/10.2166/wst.2015.100 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex The aim of this work is to determine paraquat adsorption capacity of zeolite NaX and Al-MCM-41. All adsorbents were synthesized by hydrothermal method using rice husk silica. For Al-MCM-41, aluminum (Al) was added to the synthesis gel of MCM-41 with Al content of 10, 15, 20 and 25 wt%. The faujasite framework type of NaX and mesoporous characteristic of Al-MCM-41 were confirmed by X-ray diffraction. Surface area of all adsorbents determined by N2 adsorption–desorption analysis was higher than 650 m2/g. Al content and geometry were determined by X-ray fluorescence and 27Al nuclear magnetic resonance, respectively. Morphology of Al-MCM-41 were studied by transmission electron microscopy; macropores and defects were observed. The paraquat adsorption experiments were conducted using a concentration range of 80–720 mg/L for NaX and 80–560 mg/L for Al-MCM-41. The paraquat adsorption isotherms from all adsorbents fit well with the Langmuir model. The adsorption capacity of NaX was 120 mg/g-adsorbent. Regarding Al-MCM-41, the 10% Al-MCM-41 exhibited the lowest capacity of 52 mg/g-adsorbent while the other samples had adsorption capacity of 66 mg/g-adsorbent. Al-MCM-41, hydrothermal synthesis, paraquat adsorption, zeolite NaX © IWA Publishing 2015 You do not currently have access to this content.