Adsorption of humic, tannic and gallic acids by a macro weakly basic ion-exchange resin JN-01 was studied. The adsorption capacity of this resin for gallic and tannic acids is much higher than that for humic acid, whi...Adsorption of humic, tannic and gallic acids by a macro weakly basic ion-exchange resin JN-01 was studied. The adsorption capacity of this resin for gallic and tannic acids is much higher than that for humic acid, which can be explained on the basis of both their molecular size and ionization degree. Furthermore, humic acid is separated into different components with molecular weight in the range from 2000 Da to 100000 Da by ultra-filter, and their adsorption isotherms on resin JN-01 indicate that humic acid＇s molecular weight is an important factor which makes significant influence on adsorption. Finally, changes in the amount of Cu^2＋ and Pb^2＋ adsorbed on resin JN-01 as a function of the concentration of each of these three acids were studied. A large increase in the heavy metal ions uptake is observed in the presence of humic substance, such advantages are due to the interactions between the heavy metal ions and the unbound functional groups of the adsorbed organic acids.展开更多
In this study, the separation and purification of Cordyceps sinensis polysaccharides by AB-8 and D-280 macro porous ad- sorption resin were researched, the adsorption characters when AB-8 macro porous adsorption resin...In this study, the separation and purification of Cordyceps sinensis polysaccharides by AB-8 and D-280 macro porous ad- sorption resin were researched, the adsorption characters when AB-8 macro porous adsorption resin processed Cordyceps sinensis leachate were determined, and the eluent were bleaching treated by D-280 macro porous adsorption resin. The results showed that the concentration of 2.0mg/mL, pH = 6 at a flow rate of 0.8mL/min. The yielding amount of polysaccharides is 246.4mg, and after decolouring treatment, the final yield is 207.1 mg.展开更多
Forsythiaside was obtained by using macro reticular resin D 101 and vaccum liquid chromatography.Using the method of agarose diffusion,the inhibition of porcine pancreatic elastase by forsythiaside was studied.The res...Forsythiaside was obtained by using macro reticular resin D 101 and vaccum liquid chromatography.Using the method of agarose diffusion,the inhibition of porcine pancreatic elastase by forsythiaside was studied.The results shown that forsythiaside could inhibit the activity of porcine pancreatic elastase.展开更多
DM 130 macro porous adsorptive resin was used to extract flavonoid glycosides from leaching solution and some factors affecting the adsorption efficiency were examined. The optimum technological conditions as follows:...DM 130 macro porous adsorptive resin was used to extract flavonoid glycosides from leaching solution and some factors affecting the adsorption efficiency were examined. The optimum technological conditions as follows:pH=5, mass ratio of liquid to solid 15 in adsorption and 70% ethanol as eluting agent. Resin could be regenerated after every three time uses. The content of flavonoids glycosides in extracts was about 24%.展开更多
This article reported the preparation of macro porous resin by heating polyproplyene and improving its property.The result showed that macro porous resin with good quality and big soil adsorption rate can be prepared ...This article reported the preparation of macro porous resin by heating polyproplyene and improving its property.The result showed that macro porous resin with good quality and big soil adsorption rate can be prepared when the ration of polyproplyene to soybean salad oil is 1∶2,the highest heating temperature is 250℃,time of homothermal agitation is 20min and the rate of cooling is 2℃/min.The resin can effectively adsorb waste grease in restaurant wastewater.After removing grease,wastewater is treated with cogulant deposition.COD cr descend to 83mg/l from 790mg/l,which can reach the national discharge standards.展开更多
基金supported by the State Key Program of National Natural Science(No.50938004)the National Nature Science Fund(No.50778088)China National Funds for Distinguished Young Scientists (No.50825802)
文摘Adsorption of humic, tannic and gallic acids by a macro weakly basic ion-exchange resin JN-01 was studied. The adsorption capacity of this resin for gallic and tannic acids is much higher than that for humic acid, which can be explained on the basis of both their molecular size and ionization degree. Furthermore, humic acid is separated into different components with molecular weight in the range from 2000 Da to 100000 Da by ultra-filter, and their adsorption isotherms on resin JN-01 indicate that humic acid＇s molecular weight is an important factor which makes significant influence on adsorption. Finally, changes in the amount of Cu^2＋ and Pb^2＋ adsorbed on resin JN-01 as a function of the concentration of each of these three acids were studied. A large increase in the heavy metal ions uptake is observed in the presence of humic substance, such advantages are due to the interactions between the heavy metal ions and the unbound functional groups of the adsorbed organic acids.
文摘In this study, the separation and purification of Cordyceps sinensis polysaccharides by AB-8 and D-280 macro porous ad- sorption resin were researched, the adsorption characters when AB-8 macro porous adsorption resin processed Cordyceps sinensis leachate were determined, and the eluent were bleaching treated by D-280 macro porous adsorption resin. The results showed that the concentration of 2.0mg/mL, pH = 6 at a flow rate of 0.8mL/min. The yielding amount of polysaccharides is 246.4mg, and after decolouring treatment, the final yield is 207.1 mg.
文摘Forsythiaside was obtained by using macro reticular resin D 101 and vaccum liquid chromatography.Using the method of agarose diffusion,the inhibition of porcine pancreatic elastase by forsythiaside was studied.The results shown that forsythiaside could inhibit the activity of porcine pancreatic elastase.
文摘DM 130 macro porous adsorptive resin was used to extract flavonoid glycosides from leaching solution and some factors affecting the adsorption efficiency were examined. The optimum technological conditions as follows:pH=5, mass ratio of liquid to solid 15 in adsorption and 70% ethanol as eluting agent. Resin could be regenerated after every three time uses. The content of flavonoids glycosides in extracts was about 24%.
文摘This article reported the preparation of macro porous resin by heating polyproplyene and improving its property.The result showed that macro porous resin with good quality and big soil adsorption rate can be prepared when the ration of polyproplyene to soybean salad oil is 1∶2,the highest heating temperature is 250℃,time of homothermal agitation is 20min and the rate of cooling is 2℃/min.The resin can effectively adsorb waste grease in restaurant wastewater.After removing grease,wastewater is treated with cogulant deposition.COD cr descend to 83mg/l from 790mg/l,which can reach the national discharge standards.
