Abstract
We synthesized three new dithiocarbamate (DTC)-modified cellulose biomaterials (DMC-1, DMC-2, and DMC-4) to investigate their adsorption capabilities as mitigators of arsenite (AsIII) in aqueous media. The main novelty of the adsorbents was that, among two inorganic species of arsenic, arsenite and arsenate (AsV), DMCs were highly selective to AsIII in the pH range 2-7. The surface areas of the adsorbents were unified by supporting the DMCs on silica gel (designated SSDMC-1, SSDMC-2, and SSDMC-4, respectively) to investigate the effect of the length of the alkyl chains connecting cellulose and DTC groups on AsIII adsorption. The Langmuir model showed a good regression coefficient (R2 > 0.96), and the isotherm results revealed that longer chains might enhance the AsIII capture ability. The adsorbents were also capable of removing various heavy metals, and the coexisting ions, FeIII, MnII, PbII, and ZnII, had no significant impact on the removal of AsIII by the DMCs. Moreover, DMC-2 could remove 98.4 ± 0.1% of AsIII from artificially contaminated river water.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
