改性核桃壳吸附水中磷酸根的研究
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摘要
利用环氧氯丙烷—三乙胺对核桃壳粉进行改性,研究改性后的核桃壳粉对水中磷的吸附情况。采用单要素优化实验,以探讨改性剂的用量、改性时间、吸附质溶液的pH和吸附温度对改性核桃壳吸附效率的影响。单要素实验结果表明:改性核桃壳对磷酸根的吸附最佳条件为20g核桃壳粉加入改性剂三乙胺40m L且改性时间为1.0h;改性核桃壳吸附的最佳条件为pH=7,改性核桃壳的吸附温度为25℃,此时改性核桃壳对废水的去除率达到76.73%,改性效果良好。
In this thesis, the adsorption of the walnut shells modified by epoxy chloropropane and triethylamine on the phosphorus in waste water. The effects of the amount of modifier, modification time, adsorbate p H and temperature on the adsorption efficiency of the modified walnut shell were investigated by single factor optimization experiments. The results showed that the optimum conditions of adsorption were 40 mL modifier of triethylamine, 1 h modification time, pH =7, T =25 ℃, the adsorption rate is 76.73% as good modification effect.
In this thesis, the adsorption of the walnut shells modified by epoxy chloropropane and triethylamine on the phosphorus in waste water. The effects of the amount of modifier, modification time, adsorbate p H and temperature on the adsorption efficiency of the modified walnut shell were investigated by single factor optimization experiments. The results showed that the optimum conditions of adsorption were 40 mL modifier of triethylamine, 1 h modification time, pH =7, T =25 ℃, the adsorption rate is 76.73% as good modification effect.
引文
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[2]马天佑.电絮凝—石灰沉淀处理高浓度磷酸盐废水的工艺研究[D].吉林:哈尔滨工业大学, 2017.
[3]袁秋兰,林貂贞,傅银红,等.镧掺杂焙烧镁铝水滑石的制备及其吸附性能研究[J].井冈山大学学报:自然科学版,2015, 36(5):43-47.
[4]任婧.铁/生物炭复合材料的制备及对水中磷的吸附性能的研究[D].天津:天津大学,2016.
[5]周翔,郑晓英,周橄金,等.内电解耦合人工湿地对某工业园区污水厂尾水的脱氮除磷效果[J].净水技术,2018,37(9):106-112.
[6]陈艺敏,陈建福.荔枝壳对Cr(VI)的吸附性能研究[J].井冈山大学学报:自然科学版,2015,36(3):49-53.
[7]吴桐,庞亮军,聂巨亮.改性核桃壳/活性炭复合吸附制革废水中Cr6+效果及动力学研究[J].皮革与化工,2018,35(2):7-11.
[8]徐会,唐扬,刘贺,等.Fe(Ⅲ)负载改性核桃壳对Cu2+吸附研究[J].安徽农学通报,2016,22(21):16-24.
[9]吴文炳,张秀喜,陈建华.性炭的微波制备及对Pb(Ⅱ)和染料的共吸附[J].江苏农业科学,2016,44(12):461-464.
[10]李山,刘丹.磷钼蓝分光光度法测定水中磷的改进[J].化工环保, 2006, 26(1):78-80.
[11]张浏,冯景伟,陈云峰,等.鸡蛋壳废料对水中磷的吸附性能研究[J].环境科学与技术, 2011,34(6):67-70.