An ethylenediamine-modified hypercrosslinked polystyrene resin: Synthesis, adsorption and separation properties

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• 作者：Xiaomei Wang ; Kailiang Dai ; Limiao Chen ; Jianhan Huang ; You-Nian Liu
• 关键词：Hypercrosslinked polystyrene resins ; Adsorption ; Equilibrium ; Breakthrough ; Phenol
• 刊名：Chemical Engineering Journal
• 出版年：15 April, 2014
• 年：2014
• 卷：242
• 期：Complete
• 页码：19-26
• 全文大小：1319 K

文摘

We developed an effective approach for increasing phenol uptakes on a hypercrosslinked polystyrene resin and separating phenol from methyl orange or Congo red from the mixed solution. The ethylenediamine-modified hypercrosslinked polystyrene resins were synthesized, the equilibrium and breakthrough performance of the resins were determined on a selected resin named HJ-D33. The phenol uptakes on HJ-D33 were remarkably larger than that on its precursor and the commercial adsorbents like XAD-4, D301. The breakthrough capacity of phenol on HJ-D33 was 50.37 mg/ml wet resin at an initial concentration of 800.8 mg/L and a flow rate of 8.0 BV/h and the used HJ-D33 could be completely regenerated by a mixed solvent containing 0.01 mol/L of sodium hydroxide and 50% of ethanol. Methyl orange (or Congo red) and phenol could be dynamically separated by HJ-D33 resin column as the effluent was in the range of 0-60 BV.