Page 50 - 《水资源与水工程学报》2024年第5期
P. 50

!35 "!5 #                         & ' ( ) & * + , -                               Vol.35No.5
               2024 $ 10 %              JournalofWaterResources&WaterEngineering                 Oct.,2024

            DOI:10.11705/j.issn.1672-643X.2024.05.06


           4XYÏ©Ðv?oj@AÑu Cr( Ⅵ) v×ØZcXY


                                              1       1        1         1       2
                                       .bb , c d , & e , &fg , h i
                        (1. ÄTxˆyŠŒ.T, ÄT 201699;2. ÄT>…†‡%&&+·z!|, ÄT 200131)
               H I: #0â Cr(VI) XA†‡{ÞßçE§¨, @úà‡ˆùýkDER†A´, ˆQö/Ð)ȶö÷, e†
               ‡ˆùýkr+‰_J=kÌçŸ<,ðA¿Q Cr( Ⅵ) {Ð)¸_。óÅB1Ð)…_%<(÷Ž% pH½、 Ð)
               ‘äÐ)|wåð=kÌÐ)Cr( Ⅵ) {‚ƒ; ¶· BET-N、SEM-EDS、FTIRä XPS 岁>Q•C Cr( Ⅵ) D
                                                               2
               j~ðr+‰=kÌÐ)Í、 áuvÐ)¸ž¢£。°±²o: r+‰=kÌPö Cr( Ⅵ) {ô7 pH½@ 2, ôþ
               Ð)‘@ 55℃, Ð)|w@ 3.0h |,Cr( Ⅵ) {PökûgZ 100%; .Ð)X,ÞßÐ)>Q, Ð)¸žÞßÛ
               Ü@r:îl、 Ùè'†äUS'†; ùæØ{r+‰=kÌX¨y¶Vàk{ö/Ð)ö÷, *éúà‡ˆù
               ýkDEA´{›|, †Á#0â Cr( Ⅵ) {Àž。
               JKL: =kÌ; #0â;Cr( Ⅵ); €­²; Ð)¸ž
               MNFOP:X71   QRSTU:A    QVWP:1672643X(2024)05004607

                             Characterizationofboxwoodbranchbiocharandits
                                        adsorptionmechanism forCr ( Ⅵ)

                                                               1
                                                                                        2
                                                                             1
                                                     1
                                           1
                                HANFeifei,XIAOYi,LIULin,LIUXiuyun,XUMing
                     (1.ShanghaiVocationalCollegeofAgricultureandForestry,Shanghai201699,China;2.ShanghaiLingang
                                   FengxianEconomicDevelopmentCo. ,Ltd.,Shanghai200131,China)
               Abstract:HeavymetalCr(VI)isoneofthemainsourcesofwaterpollution.Inordertoenhancetheutili
               zationleveloflandscapewasteresourcesandsearchfornewcarbonbasedadsorbentmaterials ,boxwood
               branchbiocharwaspreparedanditsadsorptionmechanismforCr ( Ⅵ)inaqueoussolutionswasinvestiga
               ted.BatchadsorptionexperimentswereconductedtostudytheeffectsofinitialpH,adsorptiontemperature
               andadsorptiontimeonthebiocharadsorptionofCr( Ⅵ).Theadsorptionmechanismswereanalyzedbythe
               characterizationmethodssuchasBET-N,SEM-EDS,FTIRandXPS,alongwiththeanalysisofchan
                                                   2
               gesinCr ( Ⅵ)valencestatesbeforeandafteradsorption.ResultsindicatethattheoptimalpHvalueforCr
               ( Ⅵ)removalusingboxwoodbranchbiocharis2,themostfavorableadsorptiontemperatureis55℃,and
               anadsorptiontimeof3.0hoursleadstoaCr( Ⅵ)removalefficiencyofnearly100%.Chemisorptionisthe
               predominantadsorptionmode,withthemechanismsprimarilyinvolvingoxidationreductionreactions,com
               plexationandelectrostaticinteractions.Boxwoodbranchbiocharproducedvialowtemperaturepyrolysisre
               presentsanovelandhighlyefficientcarbonbasedadsorbentmaterial.Itcannotonlyelevatetheresource
               recyclingrateoflandscapewastebutalsoofferaviablesolutionforthetreatmentofheavymetalCr ( Ⅵ).
               Keywords:biochar;heavymetal;Cr( Ⅵ);characterization;adsorptionmechanism
                                                                                    [5]          [6]
                                                               A{>ðÞß·"ð              、 ó·ôð      、 ñ¯c½
            1 ./01
                                                               ð [7] 、 Ð)ð [8] å, ,Ql†ô¢£{X¥­ÌÐ)
                 #0â Cr( Ⅵ) XA†‡{ÞßçE§¨, ð=                    ð [9] 。=kÌX¨y¤?Á¥­Ì{ö/Ð)È, é
                                           [14]
            jXhä9¿‹Gi4Ç#56                   。Àž}Šù           Ð) Cr( Ⅵ) >EA·1׀y¥­Ì{ÜÝø

                !"#$:20240321; %&#$:20240524
                '()*: !"+,-./0)*¾€Qo)*¯€>(U161244213);ÄTxˆyŠŒ.T-%)*(No.KY2
                        00002004)
                +,-.: r&&(1986—), 4, 56Ó89, u;, ^_P, Þß%<>?@Xh†‡ˆžC’kÚ¯。
                /0+,: ‚ o(1981—), H, ÄT+ƒ9, u;, à_§»P, %<>?@ADEÚ¯、 T„ÇÈ。
   45   46   47   48   49   50   51   52   53   54   55