Wachiraporn Kettum1, Chanatip Samart1,2, Narong Chanlek3, Phakkhananan Pakawanit3, Prasert Reubroycharoen4, Guoqing Guan5, Suwadee Kongparakul6,7, Suda Kiatkamjornwong8,9. 1. Department of Chemistry, Faculty of Science and Technology, Thammasat University, Pathumthani, 12120, Thailand. 2. Bioenergy and Biochemical Refinery Technology Program, Faculty of Science and Technology, Thammasat University, Pathumthani, 12120, Thailand. 3. Synchrotron Light Research Institute (Public Organization), 111 University Avenue, Muang District, Nakhon Ratchasima, 3000, Thailand. 4. Department of Chemical Technology, Faculty of Science, Chulalongkorn University, 254 Phyathai Road, Wangmai, Patumwan, Bangkok, 10330, Thailand. 5. Institute of Regional Innovation, Hirosaki University, Aomori, 030-0813, Japan. 6. Department of Chemistry, Faculty of Science and Technology, Thammasat University, Pathumthani, 12120, Thailand. ksuwadee@tu.ac.th. 7. Bioenergy and Biochemical Refinery Technology Program, Faculty of Science and Technology, Thammasat University, Pathumthani, 12120, Thailand. ksuwadee@tu.ac.th. 8. Office of University Research Affairs, Chulalongkorn University, 254 Phyathai Road, Wangmai, Patumwan, Bangkok, 10330, Thailand. 9. FRST, Academy of Science, Office of the Royal Society, Sanam Suea Pa, Khet Dusit, Bangkok, 10300, Thailand.
Abstract
A bio -renewable polyisoprene obtained from Hevea Brasiliensis was used to produce functionalised carbon composite foam as an adsorbent for heavy metal ions. Functionalised carbon materials (C-SO3H, C-COOH, or C-NH2) derived from coconut shell waste were prepared via a hydrothermal treatment. Scanning electron microscopy images showed that the functionalised carbon particles had spherical shapes with rough surfaces. X-ray photoelectron spectroscopy confirmed that the functional groups were successfully functionalised over the carbon surface. The foaming process allowed for the addition of carbon (up to seven parts per hundred of rubber) to the high ammonia natural rubber latex. The composite foams had open pore structures with good dispersion of the functionalised carbon. The foam performance on copper ion adsorption has been investigated with regard to their functional group and adsorption conditions. The carbon foams achieved maximum Cu(II) adsorption at 56.5 [Formula: see text] for C-SO3H, 55.7 [Formula: see text] for C-COOH, and 41.9 [Formula: see text] for C-NH2, and the adsorption behaviour followed a pseudo-second order kinetics model.
A bio -renewable polyisoprene obtained from n class="Species">Hevea Brasiliensis was used to produce functionalised carboncomposite foam as an adsorbent for heavy metal ions. Functionalised carbon materials (C-SO3H, C-COOH, or C-NH2) derived from coconut shell waste were prepared via a hydrothermal treatment. Scanning electron microscopy images showed that the functionalised carbon particles had spherical shapes with rough surfaces. X-ray photoelectron spectroscopy confirmed that the functional groups were successfully functionalised over the carbon surface. The foaming process allowed for the addition of carbon (up to seven parts per hundred of rubber) to the high ammonia natural rubber latex. The composite foams had open pore structures with good dispersion of the functionalised carbon. The foam performance on copper ion adsorption has been investigated with regard to their functional group and adsorption conditions. The carbon foams achieved maximum Cu(II) adsorption at 56.5 [Formula: see text] for C-SO3H, 55.7 [Formula: see text] for C-COOH, and 41.9 [Formula: see text] for C-NH2, and the adsorption behaviour followed a pseudo-second order kinetics model.