柚皮粉复合高吸水树脂吸附溶液中Cu~(2+)的行为及机理
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摘要
探究了柚皮粉接枝聚丙烯酸-聚丙烯酰胺复合高吸水树脂(PP-SA)对Cu~(2+)的吸附行为及机理。考察了吸附时间及硫酸铜初始质量浓度对PP-SA吸附Cu~(2+)容量的影响,并对其吸附过程进行热力学等温线及动力学方程拟合,用XPS及TG对吸附Cu~(2+)溶液饱和的PP-SA进行了表征,探讨了其吸附Cu~(2+)机理。结果表明:硫酸铜初始质量浓度为2000mg/L时PP-SA的Cu~(2+)吸附容量最大,可达199.3mg/g,吸附约6.5h即达饱和;PP-SA对Cu~(2+)的吸附等温线符合Langmuir吸附等温式,吸附动力学符合准二级动力学方程;PP-SA对Cu~(2+)的吸附主要通过离子交换、螯合作用及静电吸引实现,被吸附的铜物种以Cu~(2+)形式存在,其中有小部分CuSO_4。
Adsorption behaviors and mechanism of Cu~(2+) in solution by pomelo peel powder grafted polyacrylate-polyacrylamide composite superabsorbent(PP-SA) were studied. The effects of adsorption time and initial mass concentration of copper sulfate on the adsorption capacity of Cu~(2+) were investigated.The thermodynamic adsorption isotherms and adsorption kinetics models were adopted to fit the data. The PP-SA saturated with Cu~(2+) ions was characterized by X-ray photoelectron spectroscopy(XPS) and thermogravimetric analysis(TG). The adsorption mechanisms were proposed. The results showed that the adsorption capacity of PP-SA for Cu~(2+) ions in 2000 mg/L CuSO4 solution was the highest, reaching 199.3 mg/g in about 6.5 h. The Cu~(2+) adsorption process followed the pseudo-second-order kinetic model and the data were fitted to the Langmuir isotherms. The Cu~(2+) adsorption on PP-SA is achieved by ion exchange adsorption, chelation and electrostatic attraction. The copper species absorbed in PP-SA exist as Cu~(2+), a small part of which is CuSO_4.
Adsorption behaviors and mechanism of Cu~(2+) in solution by pomelo peel powder grafted polyacrylate-polyacrylamide composite superabsorbent(PP-SA) were studied. The effects of adsorption time and initial mass concentration of copper sulfate on the adsorption capacity of Cu~(2+) were investigated.The thermodynamic adsorption isotherms and adsorption kinetics models were adopted to fit the data. The PP-SA saturated with Cu~(2+) ions was characterized by X-ray photoelectron spectroscopy(XPS) and thermogravimetric analysis(TG). The adsorption mechanisms were proposed. The results showed that the adsorption capacity of PP-SA for Cu~(2+) ions in 2000 mg/L CuSO4 solution was the highest, reaching 199.3 mg/g in about 6.5 h. The Cu~(2+) adsorption process followed the pseudo-second-order kinetic model and the data were fitted to the Langmuir isotherms. The Cu~(2+) adsorption on PP-SA is achieved by ion exchange adsorption, chelation and electrostatic attraction. The copper species absorbed in PP-SA exist as Cu~(2+), a small part of which is CuSO_4.
引文
[1]Liu Lin(柳琳),Xia Qiang(夏嫱).Research progress about the effect of copper pollution on the growth and reproduction of insects[J].Journal of Environmental Entomology(环境昆虫工程学报),2016,38(2):451-456.
[2]Lin Aijun(林爱军),Wang Fenghua(王凤化),Xie Wenjuan(谢文娟),et al.A review of phytotoxicity of soil contaminated with copper[J].Journal of Anhui Agricultural Science(安徽农业科学),2011,39(35):21740-21742,21847
[3]Singh T,Singhal R.Poly(acrylic acid/acrylamide/sodium humate)superabsorbent hydroels for metal ion/dye adsorption:Effect of sodium humate concentration[J].Journal of Applied Polymer Science,2012,125(2):1267-1283.
[4]Wang Nong(王农),Chen Lixuan(陈利轩),Yang Lijuan(杨利娟),et al.Adsorption of copper ion with carbonate modified high waterabsorbing resin[J].Modern Chemical Industry(现代化工),2014,34(3):78-81.
[5]Zeng Yiwen(曾一文),Guo Juan(郭娟),Wang Nong(王农).The Study on adsorption for copper ion with ethylene diamine tetraacetic acid modified high water-absorbing resin[J].Chemical Resrarch and Application(化学研究与应用),2017,29(10):1498-1504.
[6]Ni Ping(倪平).Studies on the cadmium(II)adsorption of the modification of cellulose from pomelo peel[D].Wuhan:Huazhong Agricultural University(华中农业大学),2011.
[7]Liu Jingyong(刘敬勇),Huang Guihong(黄桂虹),Deng Junqiang(邓俊强),et al.Absorbent prepared from waste pomelo peel and its absorbent of Pb2+in wasterwater[J].Journal of Ecology and Rural Environment(生态与农村环境学报),2012,28(2):187-191.
[8]Nie Jinxia(聂锦霞),Zhang Dachao(张大超).Study on adsorption effect of pomelo(Citrus maxima)peel powder containing chromium(Cr6+)and its adsorptive kinetic[J].Journal of Anhui Agricultural Science(安徽农业科学),2012,40(2):976-977,1002.
[9]Gong Lei(龚磊),Hu Xiuxia(胡秀霞),Liu Guangbin(刘光斌),et al.Preparation and urea solution absorbency and release properties of pomelo peel powder grafted P(AA-AM)resin[J].Fine Chemicals(精细化工),2016,33(12):1327-1331.
[10]Ning Zhigang(宁志刚),Xu Kang(徐康),Xu Kun(徐昆),et al.Synthesis and Cu2+absorption properties of poly(AA/IA/MA)hydrogels[J].New Chemical Materials(化工新型材料),2014,42(3):166-168.
[11]Sun Mengmeng(孙萌萌).Heavy metal and dye adsorption properties of corn stalks composite superabsorbents[D].Chengdu:Chengdu University of Technology(成都理工大学),2014.
[12]Xu Jihong(徐继红),Xu Shaowei(许少薇),Li Huiling(李慧玲),et al.Adsorption performance of methylene blue LS-g-PAA/AMPS/APT Resin[J].Fine Chemicals(精细化工),2016,33(5):497-503.
[13]Neelesh B S,Shryti R,Giridhar M.Swelling and dye-adsorption characteristics of an amphoteric superabsobent polymer[J].Industrial&Engineering Chemistry Research,2012,51:14941-14948.
[14]Wu Xiaoxia(吴肖霞),Yu Qiang(余强),Yao Xiaojiang(姚小江).Evolution of CuOx/Ce O2 catalysts and its effect on CO oxidation in H2-rich gases[J].Journal of the Chinese Society of Rare Earths(中国稀土学报),2013,31(3):181-189.
[15]Ji Junhui(季君晖).Behaviors and mechanism chitosan adsorption Cu2+in solution[J].Ion Exchange and Adsorption(离子交换与吸附),1999,15(6):511-517.
[16]Zhang Yong(张勇).Study on the preparation of chitosan/ploy(SSS-HEMA-AA)hydrogel and its adsorption property for copper ion[D].Wuhan:Hubei University(湖北大学),2017.
[2]Lin Aijun(林爱军),Wang Fenghua(王凤化),Xie Wenjuan(谢文娟),et al.A review of phytotoxicity of soil contaminated with copper[J].Journal of Anhui Agricultural Science(安徽农业科学),2011,39(35):21740-21742,21847
[3]Singh T,Singhal R.Poly(acrylic acid/acrylamide/sodium humate)superabsorbent hydroels for metal ion/dye adsorption:Effect of sodium humate concentration[J].Journal of Applied Polymer Science,2012,125(2):1267-1283.
[4]Wang Nong(王农),Chen Lixuan(陈利轩),Yang Lijuan(杨利娟),et al.Adsorption of copper ion with carbonate modified high waterabsorbing resin[J].Modern Chemical Industry(现代化工),2014,34(3):78-81.
[5]Zeng Yiwen(曾一文),Guo Juan(郭娟),Wang Nong(王农).The Study on adsorption for copper ion with ethylene diamine tetraacetic acid modified high water-absorbing resin[J].Chemical Resrarch and Application(化学研究与应用),2017,29(10):1498-1504.
[6]Ni Ping(倪平).Studies on the cadmium(II)adsorption of the modification of cellulose from pomelo peel[D].Wuhan:Huazhong Agricultural University(华中农业大学),2011.
[7]Liu Jingyong(刘敬勇),Huang Guihong(黄桂虹),Deng Junqiang(邓俊强),et al.Absorbent prepared from waste pomelo peel and its absorbent of Pb2+in wasterwater[J].Journal of Ecology and Rural Environment(生态与农村环境学报),2012,28(2):187-191.
[8]Nie Jinxia(聂锦霞),Zhang Dachao(张大超).Study on adsorption effect of pomelo(Citrus maxima)peel powder containing chromium(Cr6+)and its adsorptive kinetic[J].Journal of Anhui Agricultural Science(安徽农业科学),2012,40(2):976-977,1002.
[9]Gong Lei(龚磊),Hu Xiuxia(胡秀霞),Liu Guangbin(刘光斌),et al.Preparation and urea solution absorbency and release properties of pomelo peel powder grafted P(AA-AM)resin[J].Fine Chemicals(精细化工),2016,33(12):1327-1331.
[10]Ning Zhigang(宁志刚),Xu Kang(徐康),Xu Kun(徐昆),et al.Synthesis and Cu2+absorption properties of poly(AA/IA/MA)hydrogels[J].New Chemical Materials(化工新型材料),2014,42(3):166-168.
[11]Sun Mengmeng(孙萌萌).Heavy metal and dye adsorption properties of corn stalks composite superabsorbents[D].Chengdu:Chengdu University of Technology(成都理工大学),2014.
[12]Xu Jihong(徐继红),Xu Shaowei(许少薇),Li Huiling(李慧玲),et al.Adsorption performance of methylene blue LS-g-PAA/AMPS/APT Resin[J].Fine Chemicals(精细化工),2016,33(5):497-503.
[13]Neelesh B S,Shryti R,Giridhar M.Swelling and dye-adsorption characteristics of an amphoteric superabsobent polymer[J].Industrial&Engineering Chemistry Research,2012,51:14941-14948.
[14]Wu Xiaoxia(吴肖霞),Yu Qiang(余强),Yao Xiaojiang(姚小江).Evolution of CuOx/Ce O2 catalysts and its effect on CO oxidation in H2-rich gases[J].Journal of the Chinese Society of Rare Earths(中国稀土学报),2013,31(3):181-189.
[15]Ji Junhui(季君晖).Behaviors and mechanism chitosan adsorption Cu2+in solution[J].Ion Exchange and Adsorption(离子交换与吸附),1999,15(6):511-517.
[16]Zhang Yong(张勇).Study on the preparation of chitosan/ploy(SSS-HEMA-AA)hydrogel and its adsorption property for copper ion[D].Wuhan:Hubei University(湖北大学),2017.