摘要
采用共辐射接枝法制备黄原胶-N-乙烯基吡咯烷酮接枝共聚物(XG-g-NVP),研究其溶胀性能及对苯酚的吸附性能。研究表明,XG-g-NVP在接枝率为623%时溶胀性能和吸附苯酚的能力最强,分别为62.1和0.76g/g。红外分析显示,XG-g-NVP与苯酚通过氢键相结合。XG-g-NVP对苯酚吸附符合Freundlich等温吸附方程。298K下,XG-g-NVP吸附苯酚的自由能(ΔG)为-2.586kJ/mol,表明其对苯酚的吸附是物理吸附,可自发进行。因此,XG-g-NVP可作为苯酚废水处理的一种高效吸附剂。
Xanthan gum-g-N-vinylpyrrolidone graft copolymer（XG-g-NVP） was prepared by irradiation,and its swelling and phenol absorbing properties were studied.Results showed that the XG-g-NVP had the best swelling property（62.1g/g） and the best phenol adsorption capacity（0.76g/g） at the grafting yield of 623%.IR analysis showed that the copolymer was combined with phenol through hydrogen bonds.The data of isotherm were fitted to Freundlich model.At the temperature of 298K,free energy（ΔG） of the adsorption process was-2.586kJ/mol.Thus identified that the process was a physical adsorption and spontaneously occurred.Therefore,XG-g-NVP could be used as a highly effective adsorbent for wastewater treatment.
出处
《核农学报》
CAS
CSCD
北大核心
2011年第1期97-104,共8页
Journal of Nuclear Agricultural Sciences
基金
国家十一五食品安全科技支撑专项(2006BAK02A18-3)
农业部公益性行业科技专项(200803034)
