Valentino Bervia Lunardi, Kuan-Chen Cheng, Shin-Ping Lin, Artik Elisa Angkawijaya, Alchris Woo Go, Felycia Edi Soetaredjo, Suryadi Ismadji, Hsien-Yi Hsu, Chang-Wei Hsieh, Shella Permatasari Santoso
Surface modification of durian rind cellulose (DCell) was done by utilizing the strong coordination effect of polyphenol-based metal phenolic networks (MPNs). MPNs from Fe(III)-tannic acid (FTN) and Fe(III)-gallic acid (FGN) were coated on DCell via a self-assembly reaction at pH 8, resulting in adsorbent composites of FTN@DCell and FGN@DCell for removal of Cr(VI). Batch adsorption experiments revealed that FTN coating resulted in an adsorbent composite with higher adsorption capacity than FGN coating, owing to the greater number of additional adsorption sites from phenolic hydroxyl groups of tannic acid. FTN@DCell exhibits an equilibrium adsorption capacity at 30°C of 110.9 mg/g for Cr(VI), significantly higher than FGN@DCell (73.63 mg/g); the adsorption capacity was increased at higher temperature (i.e., 155.8 and 116.8 mg/g at 50°C for FTN@DCell and FGN@DCell, respectively). Effects of pH, adsorbent dose, initial concentration, and coexisting ions on Cr(VI) removal were investigated. The kinetics fractal-based model Brouers-Sotolongo indicates the 1st and 2nd order reaction for Cr(VI) adsorption on FTN@DCell and FGN@DCell, respectively. The isotherm data can be described with a fractal-based model, which implies the heterogeneous nature of the adsorbent surface sites. The Cr(VI) adsorption via surface complexation with phenolic hydroxyl groups was confirmed by evaluating the functional groups shifting. FGN@DCell and FTN@DCell were found to have good reusability, maintaining over 50 % of their adsorption efficiency after four adsorption-desorption cycles. Environmental assessment with Arabidopsis thaliana demonstrated their potential in eliminating the Cr(VI) phytotoxic effect. Thus, this study has shown the efficient and economical conversion of durian waste into environmentally benign adsorbent for heavy metal treatment. © 2023 Elsevier B.V.
Chemical Engineering Department, Faculty of Engineering, Widya Mandala Surabaya Catholic University, East Java, Surabaya, 60114, Indonesia; Institute of Biotechnology, National Taiwan University, 1 Roosevelt Rd., Section 4, Taipei, 10617, Taiwan; Graduate Institute of Food Science and Technology, National Taiwan University, 1 Roosevelt Rd., Section 4, Taipei, 10617, Taiwan; Department of Medical Research, China Medical University Hospital, China Medical University, 91 Hsueh-Shih Rd, Taichung, 40402, Taiwan; Department of Optometry, Asia University, 500, Lioufeng Rd., Wufeng, Taichung, 41354, Taiwan; School of Food Safety, Taipei Medical University, 250 Wu-Hsing Street, Taipei, 11031, Taiwan; TMU Research Center for Digestive Medicine, Taipei Medical University, 250 Wu-Hsing Street, Taipei, 11031, Taiwan; Research Center of Biomedical Device, Taipei Medical University, 250 Wu-Hsing Street, Taipei, 11031, Taiwan; Center for Sustainable Resource Science, RIKEN, Yokohama, 230-0045, Japan; Chemical Engineering Department, National Taiwan University of Science and Technology, No. 43, Section 4, Keelung Rd, Taipei, 10607, Taiwan; Collaborative Research Center for Zero Waste and Sustainability, Jl. Kalijudan 37, East Java, Surabaya, 60114, Indonesia; School of Energy and Environment, Department of Materials Science and Engineering, City University of Hong Kong, Kowloon Tong, 518057, Hong Kong; Shenzhen Research Institute of City University of Hong Kong, Shenzhen, 518057, Hong Kong; Department of Food Science and Biotechnology, National Chung Hsing University, South Dist, Taichung City, 40227, Taiwan; Department of Medical Research, China Medical University Hospital, North Dist, Taichung City, 404333, Taiwan