菠萝蜜果皮吸附亚甲基蓝的研究
|
摘要
以菠萝蜜果皮为原料,经粉碎制成粉末吸附剂。探究了菠萝蜜果皮吸附亚甲基蓝的性能。结果表明,在100 mL 100 mg/L的亚甲基蓝溶液中,菠萝蜜果皮最佳投加量为0.8 g,pH为5、温度为25℃、震荡时间为40 min。利用准一级、准二级动力学方程模拟菠萝蜜果皮吸附亚甲基蓝的动力学过程,利用Freundlich和Langmuir方程模拟其热力学行为。结果表明菠萝蜜果皮吸附亚甲基蓝的过程适合于准二级动力学、Freundlich模型。文中计算了焓变(ΔH~0)、自由能(ΔG~0)、熵变(ΔS~0)等热力学参数,菠萝蜜果皮吸附亚甲基蓝的ΔG~0小于0,ΔS~0小于0、ΔH~0小于0,说明菠萝蜜果皮吸附亚甲基蓝的过程是一个自发的趋于有序的放热过程。通过对吸附亚甲基蓝染料前后菠萝蜜果皮材料表面形貌进行分析,发现亚甲基蓝染料填充了菠萝蜜果皮表面的的空隙,导致吸附前后菠萝蜜的表面形貌发生了变化。
This paper mainly focuses on the absorptive properties of Jackfruit Peel on methylene Blue. The raw jackfruit peel was prepared as adsorbent powder by crush. It showed that the optimal adsorption conditions in 100 mL 100 mg/L methylene solution were as follow:The dosage of jackfruit peel powder at 0.8 g was perfect condition with the pH5, the temperature 25 ℃,and the shaking time 40 minutes. The quasi-first-order and quasi-second-order kinetic equations were used to simulate the kinetics process of the adsorption of methylene blue on the jackfruit peel,and the Freundlich and Langmuir equations were used to simulated the thermodynamic behavior. The results also showed that the pseudo-second kinetic equation and the Freundlich equa-tion were suitable for describing of the whole adsorption process. The thermodynamic parameters of Gibbs free energy(ΔG~0), enthalpy(ΔH~0)and entropy change(ΔS~0)were calculated and results were as follow:In the process of Jackfruit Peel powder adsorption of methylene blue,the value of ΔG~0,ΔS~0,and ΔH~0 were kept as:ΔG~0<0,ΔH~0<0 and ΔS~0<0,which indicated that it was a spontaneous,orderly and exothermic process. The surface of the jackfruit peel were analyzed both before and after the process of adsorption. It found that the surface of the jackfruit peel was filled by methylene blue,which was resulted in the shape changing.
This paper mainly focuses on the absorptive properties of Jackfruit Peel on methylene Blue. The raw jackfruit peel was prepared as adsorbent powder by crush. It showed that the optimal adsorption conditions in 100 mL 100 mg/L methylene solution were as follow:The dosage of jackfruit peel powder at 0.8 g was perfect condition with the pH5, the temperature 25 ℃,and the shaking time 40 minutes. The quasi-first-order and quasi-second-order kinetic equations were used to simulate the kinetics process of the adsorption of methylene blue on the jackfruit peel,and the Freundlich and Langmuir equations were used to simulated the thermodynamic behavior. The results also showed that the pseudo-second kinetic equation and the Freundlich equa-tion were suitable for describing of the whole adsorption process. The thermodynamic parameters of Gibbs free energy(ΔG~0), enthalpy(ΔH~0)and entropy change(ΔS~0)were calculated and results were as follow:In the process of Jackfruit Peel powder adsorption of methylene blue,the value of ΔG~0,ΔS~0,and ΔH~0 were kept as:ΔG~0<0,ΔH~0<0 and ΔS~0<0,which indicated that it was a spontaneous,orderly and exothermic process. The surface of the jackfruit peel were analyzed both before and after the process of adsorption. It found that the surface of the jackfruit peel was filled by methylene blue,which was resulted in the shape changing.
引文
[1]王俊宁,任雪岩,余树明,等.9个菠萝蜜品系香气成分及特征香气分析[J].果树学报,2018,35(5):574-585.
[2]方桂红,詹达谋.我国菠萝蜜的研究现状[J].粮食与油脂,2018,31(4):1-3.
[3]王梦霞,金建忠,周恩牧,等.菠萝蜜种子多酚的超临界CO2萃取工艺研究[J].天然产物研究与开发,2018,30(8):1444-1448.
[4]龙家杰,陆同庆.印染废水治理中去除的研究现状与进展[J].国外丝绸,2002,5:13-16.
[5]沈明,杨梦兵,王中伟.阳离子染料废水治理技术及进展[J].环境科技,2009,22(2):98-101.
[6]许红梅.阳离子染料的光催化降解研究[D].苏州:苏州大学,2014.
[7]曾永德.碱木质素基吸附材料制备及对配水中阳离子和阴离子染料的吸附[D].湘潭:湘潭大学,2016.
[8]杨新周.王棕果壳粉吸附亚甲基蓝的机理研究[J].生物质化学工程,2016,50(1):22-28.
[9]刘侠,张智芳,陈碧,等.枣核对水溶液中亚甲基蓝、碱性品红的吸附性能研究[J].食品工业科技,2015,36(6):304-308.
[10]杨新周,杨子仙,段聪丽,等.咖啡壳吸附亚甲基蓝和碱性品红的性能研究[J].热带作物学报,2017,38(5):1-7.
[11]杨新周.山竹壳粉吸附亚甲基蓝性能研究[J].环境科学导刊,2017,36(1):11-17.
[12]姜爽,吕琳琳,郭宏伟,等.榛子壳对亚甲基蓝吸附性能的研究[J].天然产物研究与开发,2017,2(9):110-113.
[13]朱振华,李小敏,张艺.改性橘皮吸附亚甲基蓝模拟废水的性能研究[J].工业安全与环保,2017,43(5):24-26.
[14]雷生煜,赵航航,沈州,等.锯末对亚甲基蓝的吸附条件优化[J].化工技术与开发,2017,46(3):36-39.
[15]李紫薇,李小敏,刘伟,等.薰衣草叶对染料废水中亚甲基蓝的吸附特性[J].江苏农业科学,2017,45(9):239-242.
[16]李卓厉,蔡晓敏,徐仪洁,等.改性绿茶去除水中碱性品红的研究[J].茶叶科学,2016,36(6):639-645.
[17]杨新周,林惠昆,郝志云,等.甘蔗滤泥吸附亚甲基蓝性能研究[J].西南农业学报,2018,31(5):1070-1075.
[18]A F Hassan,A M Abdel-Mohsen,Moustafa M G Fouda.Comparative study of calcium alginate,activated carbon,and theircomposite beads on methylene blue adsorption[J].Carbohydrate Polymers,2014,102:192-198.
[2]方桂红,詹达谋.我国菠萝蜜的研究现状[J].粮食与油脂,2018,31(4):1-3.
[3]王梦霞,金建忠,周恩牧,等.菠萝蜜种子多酚的超临界CO2萃取工艺研究[J].天然产物研究与开发,2018,30(8):1444-1448.
[4]龙家杰,陆同庆.印染废水治理中去除的研究现状与进展[J].国外丝绸,2002,5:13-16.
[5]沈明,杨梦兵,王中伟.阳离子染料废水治理技术及进展[J].环境科技,2009,22(2):98-101.
[6]许红梅.阳离子染料的光催化降解研究[D].苏州:苏州大学,2014.
[7]曾永德.碱木质素基吸附材料制备及对配水中阳离子和阴离子染料的吸附[D].湘潭:湘潭大学,2016.
[8]杨新周.王棕果壳粉吸附亚甲基蓝的机理研究[J].生物质化学工程,2016,50(1):22-28.
[9]刘侠,张智芳,陈碧,等.枣核对水溶液中亚甲基蓝、碱性品红的吸附性能研究[J].食品工业科技,2015,36(6):304-308.
[10]杨新周,杨子仙,段聪丽,等.咖啡壳吸附亚甲基蓝和碱性品红的性能研究[J].热带作物学报,2017,38(5):1-7.
[11]杨新周.山竹壳粉吸附亚甲基蓝性能研究[J].环境科学导刊,2017,36(1):11-17.
[12]姜爽,吕琳琳,郭宏伟,等.榛子壳对亚甲基蓝吸附性能的研究[J].天然产物研究与开发,2017,2(9):110-113.
[13]朱振华,李小敏,张艺.改性橘皮吸附亚甲基蓝模拟废水的性能研究[J].工业安全与环保,2017,43(5):24-26.
[14]雷生煜,赵航航,沈州,等.锯末对亚甲基蓝的吸附条件优化[J].化工技术与开发,2017,46(3):36-39.
[15]李紫薇,李小敏,刘伟,等.薰衣草叶对染料废水中亚甲基蓝的吸附特性[J].江苏农业科学,2017,45(9):239-242.
[16]李卓厉,蔡晓敏,徐仪洁,等.改性绿茶去除水中碱性品红的研究[J].茶叶科学,2016,36(6):639-645.
[17]杨新周,林惠昆,郝志云,等.甘蔗滤泥吸附亚甲基蓝性能研究[J].西南农业学报,2018,31(5):1070-1075.
[18]A F Hassan,A M Abdel-Mohsen,Moustafa M G Fouda.Comparative study of calcium alginate,activated carbon,and theircomposite beads on methylene blue adsorption[J].Carbohydrate Polymers,2014,102:192-198.