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在碱性条件下,以对苯醌、对苯二酚和4-氨基苯甲酸3种物质为前体,通过氧化聚合反应可以得到类似腐植酸性质的聚合物。用天然及合成腐植酸样品研究腐植酸对Cu2+的吸附作用。通过Langmuir和Freundlich等温吸附方程式来建立数学模型,进而计算出最大吸附强度K′(Langmuir)、最大吸附容量b(Langmuir)和吸附剂最大吸附容量m(Freundlich)。基于溶解度的研究,我们选择在pH3下进行吸附试验研究。在Langmuir吸附等温式中,RL(平衡参数)表示Cu2+的吸收情况。试验表明,在适当范围内,Cu2+呈现出良好的吸附效果。
Under basic conditions, p-benzoquinone, hydroquinone and 4-aminobenzoic acid as precursors, through the oxidative polymerization reaction can be similar to humic acid polymer. Study on the adsorption of Cu2 + by humic acid with natural and synthetic humic acid samples. The mathematical model was established by Langmuir and Freundlich isotherm equations to calculate the maximum adsorption capacity K ’(Langmuir), the maximum adsorption capacity b (Langmuir) and the adsorbent maximum adsorption capacity m (Freundlich). Based on the solubility studies, we chose to conduct adsorption studies at pH 3. In the Langmuir adsorption isotherm, RL (equilibrium parameter) indicates the absorption of Cu2 +. Experiments show that, in the appropriate range, Cu2 + showed a good adsorption effect.