典型化学氧化技术对双酚类化合物的去除效果及机理研究

发布时间：2018-06-05 10:05

本文选题：氧化工艺 + 双酚类化合物　；参考：《合肥工业大学》2017年硕士论文

【摘要】：双酚类化合物为典型的内分泌干扰物。由于其使用量巨大,土壤、水体、空气粉尘等环境中频繁检出双酚类化合物,由双酚类化合物引起的生态环境问题日益受到关注。本文以常见的双酚F(BPF)、双酚S(BPS)和双酚B(BPB)为对象,研究了高锰酸钾、次氯酸钠及二氧化氯三种氧化剂对双酚类化合物的氧化去除作用及机理。本文的主要结论如下:研究了高锰酸钾对双酚类化合物的去除作用及影响因素。高锰酸钾可快速去除水中的BPF、BPB,且反应均符合二级动力学模型。提高溶液的温度、pH值,或在溶液中添加腐殖酸、HCO3-均会促进高锰酸钾与BPF、BPB的反应进行。高锰酸钾可以有效去除自然水体中低浓度的BPF,而对低浓度的BPB去除效果不佳。采用气相色谱-质谱联用技术(GC-MS)分析了反应过程中的降解产物,并推导了可能的降解途径。研究了次氯酸钠对双酚类化合物的去除作用及影响因素。次氯酸钠可快速去除水中的BPS、BPB,且反应过程符合二级动力学模型。提高溶液的温度会显著提高次氯酸钠对BPS、BPB的去除效果;而NH4+会显著抑制反应的进行。次氯酸钠可以有效去除自然水体中低浓度的BPS和BPB。采用液相色谱-飞行时间质谱仪(LC-TOF)分析了反应过程中的转化产物,并推导了可能的转化途径。研究了二氧化氯对双酚类化合物的去除作用及影响因素。二氧化氯氧化BPS的反应十分迅速,反应过程符合二级动力学模型。提高溶液温度和pH值可提高二氧化氯对BPS的去除效果。二氧化氯可以快速去除自然水体中低浓度的BPS。采用LC-TOF和GC-MS技术检测了反应过程中的数种降解产物,并推导了可能的降解途径。
[Abstract]:Bisphenol compounds are typical endocrine disruptors. Because of its huge usage and frequent detection of bisphenol compounds in soil, water body, air dust and so on, the ecological environmental problems caused by bisphenol compounds have been paid more and more attention. In this paper, the oxidation removal of bisphenol compounds by potassium permanganate, sodium hypochlorite and chlorine dioxide was studied. The main conclusions are as follows: the removal of bisphenol compounds by potassium permanganate and its influencing factors were studied. Potassium permanganate can rapidly remove BPFN BPBs from water, and the reaction accords with the second order kinetic model. Increasing the pH value of the solution or adding humic acid HCO3- to the solution can promote the reaction of potassium permanganate with BPFN BPB. Potassium permanganate can effectively remove low concentration of BPFs in natural water, but low concentration of BPB. Gas chromatography-mass spectrometry (GC-MS) was used to analyze the degradation products in the reaction process and the possible degradation pathway was deduced. The removal of bisphenol compounds by sodium hypochlorite and its influencing factors were studied. Sodium hypochlorite can rapidly remove BPSN BPBs from water and the reaction process is in accordance with the second order kinetic model. Increasing the temperature of the solution can significantly increase the removal efficiency of BPSN BPB by sodium hypochlorite, while NH4 can significantly inhibit the reaction. Sodium hypochlorite can effectively remove BPS and BP from natural water. The transformation products in the reaction process were analyzed by LC-TOF, and the possible transformation pathway was deduced. The removal of bisphenol compounds by chlorine dioxide and its influencing factors were studied. The oxidation of BPS by chlorine dioxide was very rapid, and the reaction process was in accordance with the second order kinetic model. The removal effect of chlorine dioxide on BPS can be improved by increasing the solution temperature and pH value. Chlorine dioxide can quickly remove low concentrations of BPSs in natural water. LC-TOF and GC-MS techniques were used to detect several degradation products and possible degradation pathways were deduced.
【学位授予单位】：合肥工业大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：X505

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