菹草干体对亚甲基蓝的生物吸附
|
摘要
采用静态法研究了菹草干体处理模拟染料废水,考察了吸附时间、溶液初始pH值、吸附剂用量以及亚甲基蓝初始浓度等因素对吸附过程的影响.结果表明,菹草干体对亚甲基蓝吸附去除的最佳反应条件为:菹草干体用量为0.5g/100mL、吸附反应90min、初始浓度为50mg/L、溶液pH为3.在最佳反应条件下,菹草干体对亚甲基蓝的吸附去除率可达95%.菹草对亚甲基蓝的吸附行为符合拟二级动力学方程;菹草对亚甲基蓝的吸附平衡符合Langmuir等温方程,最大吸附量为88.5mg/g.
The treatment of simulated dyeing wastewater was studied by static adsorption method using biosorbent material dried Potamogeton crispus.The effects of adsorption equilibrium time,initial pH,the dosage of adsorbent and initial concentration of methylene blue on the adsorption performance were investigated.The results showed that the removal efficiency of methylene blue reached 95% under the optimized conditions of adsorption equilibrium time 90 min,initial pH 3,the dosage of adsorbent 0.5g/100 mL and initial concentration of methylene blue 50mg/L.The methylene blue adsorption onto dried Potamogeton crispus followed the pseudo second-order kinetic model.Thermodynamic studies showed that the adsorption data was well described by Langmuir adsorption isotherm equation.The maximum adsorption capacity of methylene blue was 88.5mg/g.
The treatment of simulated dyeing wastewater was studied by static adsorption method using biosorbent material dried Potamogeton crispus.The effects of adsorption equilibrium time,initial pH,the dosage of adsorbent and initial concentration of methylene blue on the adsorption performance were investigated.The results showed that the removal efficiency of methylene blue reached 95% under the optimized conditions of adsorption equilibrium time 90 min,initial pH 3,the dosage of adsorbent 0.5g/100 mL and initial concentration of methylene blue 50mg/L.The methylene blue adsorption onto dried Potamogeton crispus followed the pseudo second-order kinetic model.Thermodynamic studies showed that the adsorption data was well described by Langmuir adsorption isotherm equation.The maximum adsorption capacity of methylene blue was 88.5mg/g.
引文
[1]Yang Q.X.,Jia Z.J.,Yang M.Microbial decolorization of dye containing wastewater[J].Microbiology,2006(4):144-148.
[2]Wang Y.Z.,Chen M.X.,Hu C.A study of dye degradation in the combination process of photocatalytic oxidation with biochemical oxidation[J].Acta Scientiae Circumstantiae,2000(6):772-775.
[3]任南琪,周显娇,郭婉茜,等.染料废水处理技术研究进展[J].化工学报,2013,64(1):84-94.
[4]刘元臣,闫侃,薛珊.印染废水处理综述[J].染整技术,2014,36(7):8-12.
[5]廖钦洪,刘庆业,蒙冕武,等.稻壳基活性炭的制备及其对亚甲基蓝吸附的研究[J].环境工程学报,2011,5(11):2247-2252.
[6]周鸣,朱书法,刘帅兵,等.海藻酸钠固化香蕉皮粉吸附染料废水[J].环境工程学报,2013,7(6):2208-2212.
[7]蒋红梅,钟来进,卢爱民,等.丝光改性竹笋皮对亚甲基蓝的吸附研究[J].南京农业大学学报,2014,37(2):163-169.
[8]催晨,蔡建波,华玉妹,等.菹草对微污水中重金属复合污染的净化效果[J].华中农业大学学报,2014,33(2):72-77.
[9]任文君,胡晓波,刘霞,等.白洋淀菹草对富营养化水体总磷的净化[J].应用生态学报,2011,22(4):1053-1058.
[10]Zhang W.X.,Li H.J.,Kan X.W.Adsorption of anionic dyes from aqueous solutions using chemically modified straw[J].Bioresource Technology,2012,117:40-47.
[11]邱罡,林少敏,陈少瑾.水葫芦干体对亚甲基蓝的生物吸附[J].水处理技术,2012,38(11):39-46.
[12]周殷,胡长伟,李建龙.柚子皮吸附水溶液中亚甲基蓝的机理研究[J].环境科学研究,2014,21(5):49-54.
[13]张佳,任秉雄,王鹏,等.山茶籽粉吸附亚甲基蓝的性能研究[J].环境化学,2013,32(8):1539-1545.
[14]Yasemin B.,Haluk A.A kinetics and thermodynamics study of methylene blue adsorption on wheat shells[J].Desalination,2006,194:259-267.
[15]汤亚飞,刘作焕,周旋.生物炭对亚甲基蓝的吸附动力学[J].武汉工程大学学报,2014,36(9):23-28.
[2]Wang Y.Z.,Chen M.X.,Hu C.A study of dye degradation in the combination process of photocatalytic oxidation with biochemical oxidation[J].Acta Scientiae Circumstantiae,2000(6):772-775.
[3]任南琪,周显娇,郭婉茜,等.染料废水处理技术研究进展[J].化工学报,2013,64(1):84-94.
[4]刘元臣,闫侃,薛珊.印染废水处理综述[J].染整技术,2014,36(7):8-12.
[5]廖钦洪,刘庆业,蒙冕武,等.稻壳基活性炭的制备及其对亚甲基蓝吸附的研究[J].环境工程学报,2011,5(11):2247-2252.
[6]周鸣,朱书法,刘帅兵,等.海藻酸钠固化香蕉皮粉吸附染料废水[J].环境工程学报,2013,7(6):2208-2212.
[7]蒋红梅,钟来进,卢爱民,等.丝光改性竹笋皮对亚甲基蓝的吸附研究[J].南京农业大学学报,2014,37(2):163-169.
[8]催晨,蔡建波,华玉妹,等.菹草对微污水中重金属复合污染的净化效果[J].华中农业大学学报,2014,33(2):72-77.
[9]任文君,胡晓波,刘霞,等.白洋淀菹草对富营养化水体总磷的净化[J].应用生态学报,2011,22(4):1053-1058.
[10]Zhang W.X.,Li H.J.,Kan X.W.Adsorption of anionic dyes from aqueous solutions using chemically modified straw[J].Bioresource Technology,2012,117:40-47.
[11]邱罡,林少敏,陈少瑾.水葫芦干体对亚甲基蓝的生物吸附[J].水处理技术,2012,38(11):39-46.
[12]周殷,胡长伟,李建龙.柚子皮吸附水溶液中亚甲基蓝的机理研究[J].环境科学研究,2014,21(5):49-54.
[13]张佳,任秉雄,王鹏,等.山茶籽粉吸附亚甲基蓝的性能研究[J].环境化学,2013,32(8):1539-1545.
[14]Yasemin B.,Haluk A.A kinetics and thermodynamics study of methylene blue adsorption on wheat shells[J].Desalination,2006,194:259-267.
[15]汤亚飞,刘作焕,周旋.生物炭对亚甲基蓝的吸附动力学[J].武汉工程大学学报,2014,36(9):23-28.