Water pollution with dye chemicals from apparel industries is a serious problem in the world.Since most of dyes are potentially have toxic and carcinogenic effects on human,it is important to remove them before they a...Water pollution with dye chemicals from apparel industries is a serious problem in the world.Since most of dyes are potentially have toxic and carcinogenic effects on human,it is important to remove them before they are discharged to the environment.Among many methods available for dyes removal in water,adsorption is the easiest and economically feasible that has no major obstacle for practical applications.In the present study,we tested calcined Mg/Al hydrotalcite(Mg/Al CHT)prepared by coprecipitation technique as an adsorbent for the removal of Navy Blue(NB)and Yellow F3G(YF3G)dyes.Mg/Al CHT was characterized by using a Fourier transform infrared(FTIR)spectrometer,an X-ray diffractometer(XRD)and a scanning electron microscope(SEM).The results showed that Mg/Al CHT was highly effective as an adsorbent for the removal of NB and YF3G under mild-acidic condition(pH 4)with removal capacities(b)according to Langmuir isotherm model were 7.97×10^(–4) and 5.80×10^(–4)mol·g^(-1),respectively.Kinetics study showed that the adsorption of NB and YF3D on Mg/Al CHT followed pseudosecond order with rate constant(k_(p2))11.57×10^(3) and 11.75×103 g·mol^(-1)·min-1,respectively.The spent adsorbent can be easily regenerated by simply calcining it at 450℃ for 3 h.Adsorption test on the mixture of NB and YF3G showed that the adsorption capacity of Mg/Al CHT was eightfold higher than that of Mg/Al HT and the value was maintained with repeated use.展开更多
When upgrading your network, you should consider ZTE F3G solutions.You get a total solution for Triple-play that increases your revenue dramatically, and you could cut your break-even time by 50%.
When upgrading your network,you should consider ZTE F3G solutions.You get a total solution for Triple-play that increases your revenue dramatically,and you could cut your break-even time by 50%.
A new kind of electrophoretic affinity chromatography (EAC) for bioseparation was proposed,Separation by EAC was conducted in a multicompartment electrolyzer in which the affinity gel media were packed in one of the c...A new kind of electrophoretic affinity chromatography (EAC) for bioseparation was proposed,Separation by EAC was conducted in a multicompartment electrolyzer in which the affinity gel media were packed in one of the central compartments.The presence of an electric field accelerated the migration of proteins inside the gel matrix during adsorption and descrption processes,This led to the increase of the overall speed of separation,The present study was focused on the effect of the strength of the electric field on adsorption and desorption processes.展开更多
基金financial support from Directorate General of Higher Education,Republic of Indonesia through a research scheme of Penelitian Pascasarjana 2018 with contract number 1783/UN1/DITLIT/DIT-LIT/LT/2018。
文摘Water pollution with dye chemicals from apparel industries is a serious problem in the world.Since most of dyes are potentially have toxic and carcinogenic effects on human,it is important to remove them before they are discharged to the environment.Among many methods available for dyes removal in water,adsorption is the easiest and economically feasible that has no major obstacle for practical applications.In the present study,we tested calcined Mg/Al hydrotalcite(Mg/Al CHT)prepared by coprecipitation technique as an adsorbent for the removal of Navy Blue(NB)and Yellow F3G(YF3G)dyes.Mg/Al CHT was characterized by using a Fourier transform infrared(FTIR)spectrometer,an X-ray diffractometer(XRD)and a scanning electron microscope(SEM).The results showed that Mg/Al CHT was highly effective as an adsorbent for the removal of NB and YF3G under mild-acidic condition(pH 4)with removal capacities(b)according to Langmuir isotherm model were 7.97×10^(–4) and 5.80×10^(–4)mol·g^(-1),respectively.Kinetics study showed that the adsorption of NB and YF3D on Mg/Al CHT followed pseudosecond order with rate constant(k_(p2))11.57×10^(3) and 11.75×103 g·mol^(-1)·min-1,respectively.The spent adsorbent can be easily regenerated by simply calcining it at 450℃ for 3 h.Adsorption test on the mixture of NB and YF3G showed that the adsorption capacity of Mg/Al CHT was eightfold higher than that of Mg/Al HT and the value was maintained with repeated use.
文摘When upgrading your network, you should consider ZTE F3G solutions.You get a total solution for Triple-play that increases your revenue dramatically, and you could cut your break-even time by 50%.
文摘When upgrading your network, you should consider ZTE F3G solutions.You get a total solution tor Triple-play that increases your revenue dramatically,
文摘When upgrading your network,you should consider ZTE F3G solutions.You get a total solution for Triple-play that increases your revenue dramatically,and you could cut your break-even time by 50%.
基金Supported by the State Key Projects(No.96c-03-04-05).
文摘A new kind of electrophoretic affinity chromatography (EAC) for bioseparation was proposed,Separation by EAC was conducted in a multicompartment electrolyzer in which the affinity gel media were packed in one of the central compartments.The presence of an electric field accelerated the migration of proteins inside the gel matrix during adsorption and descrption processes,This led to the increase of the overall speed of separation,The present study was focused on the effect of the strength of the electric field on adsorption and desorption processes.
