羽毛对 Pb2＋的吸附与解吸附性能研究

摘要

采用Na2 S2 O5对羽毛进行改性来提高羽毛对Pb2＋的吸附能力。研究了Na2 S2 O5溶液浓度与改性羽毛对Pb2＋吸附能力之间的关系，分析了改性前后羽毛的结构变化，同时研究了NaOH和Na2 S溶液对吸附了Pb2＋羽毛的解吸附效果。通过熔喷技术将羽毛成形为羽毛/聚丙烯（ PP）熔喷滤芯，并采用自建的滤芯动态吸附装置评价了滤芯对Pb2＋的动态吸附效果。研究表明：Na2 S2 O5是一种能有效提高羽毛Pb2＋吸附性能的改性方法；改性羽毛/PP滤芯比羽毛/PP滤芯和纯PP滤芯表现出更好的Pb2＋动态吸附能力，是一种值得深入研究和开发的重金属废水过滤和吸附材料。%Na2 S2 O5 solution was used to modify feather fiber in order to increase its adsorption ability of Pb 2+.The relationship between the concentration of Na 2 S2 O5 solution and the adsorption capacity of Pb 2+of was studied .The structure changes of feather fiber before and after modification were investigated .At the same time, the desorption effects of NaOH and Na 2 S solutions on the feather fiber absorbed with Pb 2+were studied as well .Finally, feather fiber was prepared into feather fiber/polypropylene melt-blown filter cartridge and their dynamic absorption properties of Pb 2+were investigated by using the equipment set up in our lab.The study demonstrated that Na2S2O5 solution could enhance adsorption capacity of Pb2+of modified feather fiber effectively .The modified feather fiber/PP filter core on dynamic absorption properties of Pb 2+was better than that of feather fiber/PP filter core or PP filter core .The method could be studied on application of metal waste water filtration and absorption .