简介：Theeffectofresinstructureondesalinationofligninsolutionwasinvestigated,theoptimalstructureofresinisasfollows;crosslinkingdegreeas4%,ratioofcationogentoanionogenisnear1.withsuchresinthedesalinationofligninwasproducedverywellbecausetheresinhasbothmoleculesievingandionretardationproperties.Thesulfonationdegressofligninandtotalsaltcontentofligninsolutionweredeterminredwithionexchangetechnique,therelativeerrorlessthan1%.Thesaltcontentofsmallmoleculeintheligninsolutionwascalculatedfromsulfonationdegreeofligninandtotalsalt.Amonggelandmacroporousresinsthebestseparationofligninfromreducingsugarwasachievedwithinterpenetratingsulfonatedresin2×1.5×1.Theseparationofligninwithinterpenetratingresinwascarriedoutsimultaneouslywithfractionationoflignin,theeffectoffractionationwithmacroporoussulfonatedresinisbetterthanthatwithinterpenetratingresin,buttheformerhasadefinitesorptionofligninwhichdecreasedtherecoveryoflignin.

简介：Alginate-Cu(Ⅱ）complexbeadsormembraneswerepreparedforremovalofurea.ThemechanismofsorptionofureawasidentifiedbyUV-Visiblespectra,FT-IRspectraandFar-Infraredspectra.Thefactorsaffectingtheureasorptioncapacitywerediscussedindetail.ResultsshowedthattheAlginate-Cu(Ⅱ）complexsorbentcansorbabout60myureapergramofsorbentat37℃andtheconcentrationofureawas130mg/100mlinNa2HPO4andNaH2PO4buffersolution(pH=7.0).