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Їoˮˮ2023(zhn)̎̎üg(sh)c(yng)ø߼ӑʮČãՈ
 
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|(zh)ˮ̎SÓЧ 1)ͬMɵLDHsĤؼCODCrȥЧ;Co3+Zn2+cϳɵLDHs|(zh)COD

Ŵw  sСw l(f)ڣ2018-07-17  g[Δ(sh)100
ʾ|(zh)ˮ̎SÓЧ 1)ͬMɵLDHsĤؼCODCrȥЧ;Co3+Zn2+cϳɵLDHs|(zh)CODCrȥЧ@;ZnFe-LDHs|(zh)ăЧ;ZnCo-LDHsCODCrƽȥ_(d)80%. 2)Zn2+cϳLDHsĸ|(zh)H(qing)|(zh)ﻯ̎ЧҲɌ(yng)a(chn)M(jn)ã@һЧcZn2+΢ӰP(gun). 3)ϵ
Їoˮˮ2023ЇˮЇoˮˮ2023(zhn)̎̎üg(sh)c(yng)ø߼ӑʮČãՈ̎S(bio)죨ˮ̎|(zh)Ч߼ӑ(ߌ)Ո冢

Їoˮˮ2023Їˮ̎SЇoˮˮ2023(zhn)̎̎üg(sh)c(yng)ø߼ӑʮČãՈ(bio)죨ˮ̎|(zh)Ч߼ӑ(ߌ)Ո冢
 

|(zh)ˮ̎SÓЧ

Դ: Oǭh(hun)W(wng)
 P(gun)I~ˮ̎ ˮ ˹

 1 ԣ˹ǽʮl(f)չһNˮB(ti)̎g(sh)ɏV(yng)ˮr(nng)I(y)Uˮ͹I(y)Uˮ̎ԼˮwIB(yng).|(zh)˹صҪMɲصϹǼܺ͞΢ṩ⣬|(zh)xӽQȹҲ˹ȾЙC(j)Ⱦ͵Ⱦăаl(f)]Ҫ;|(zh)ķNԼMϷʽֱӰ˹صW(xu)ĤõЧȻ|(zh)y_(d)Ч(wn)C̎ˮwȾĿ.

Ӡpٚ(layered double hydroxidesLDHs)ַQˮʯxճɃɷNɷNϽԪؽMɵľˮʯӠwY(ji)(gu)Ě.LDHsӠY(ji)(gu)еČӰ厧늺ʹӛЧ(yng)gxӿɽQԼ΢׽Y(ji)(gu)ˏV(yng)ڹܸ߷Ӳϡt(y)ˎˮ̎I(lng).ڌgxӿɽQԼ΢׽Y(ji)(gu)ˮеصȥ˿ɇLԇLDHs\(yn)˹صÓˇ.

ǰоĻA(ch)ϣԇ(yn)3N3rٻ3N2rٻɃɽM 9NLDHsĤ˹سõ|(zh)Сԇϵy(tng)M(jn)Ó(sh)(yn)^|(zh)(jng)ͬLDHsĤԺ󌦴ֱ˹еȾЧYxmȻ|(zh)ᘌԵĸԷʽ(qing)ϵy(tng)ÓЧṩ.

2 c

2.1 ԇ(yn)

2.1.1 ԇԭʼ|(zh)

xõĸԇrٻFeCl3AlCl3CoCl3rٻCaCl2MgCl2ZnCl2;6NٻﰴɃɽMϵķʽքe9NLDHsĤ|(zh).ÿNԻ|(zh)քeһ˹ģM|(zh)侎̖ 1ʾ.


1 |(zh)Էʽ

M(jn)иĤԼԇ(yn)ԭʼ|(zh)|(zh).(jng)Y|(zh)1~3 mm;л|(zh)ُԺ.

2.1.2 |(zh)ԇ(yn)

ȡϴԭʼ|(zh)b2.0 Lsˮğмӟᣬˮط(wn)80 ; 1ʾMϷʽ0.1 molBL-1M3+Һ0.2 molBL-1M2+ҺͬrͶӵbԭʼ|(zh)ğ10%NaOHҺ{(dio)(ji)pH11~12Ҕ4 h;ȡĻ|(zh)D(zhun)(sh)1000~1500 rBmin-1ėlxķx10 min;ϴxĺõĹwʹpHںи16 høĤԵĴֱ˹|(zh).

2.1.3 ԭʼԻ|(zh)LDHsĤı

|(zh)W(xu)ɷ֣mPANalytical˾a(chn)Axios advanced X侀ɹVx;|(zh)^ԣձʽa(chn)JSM-5610LVʽ@΢R.

2.2 ԇ(yn)

2.2.1 ԇԭˮ

ڮ(dng)ǰڲˮ̎Sˮˮ|(zh)δ_(d)(bio)ŷԼˮֱȾˮh(hun)ĬF(xin)ʹԇ(yn)оߌ(sh)H(yng)Ãrֵԓԇ(yn)ϵy(tng)M(jn)ˮhˮ̎S(x)ǰM(jn)ˮchкɽ^(q)ϺˮĻˮwe(ˮSM(jn)ˮ)(ˮ)=1 2.ԇˮˮ|(zh)O(jin)yY(ji) 2ʾ.


2 ԇԭˮˮ|(zh)ָ(bio)


 

2.2.2 ԇ(yn)b

10(ni)8 cmPVCԇ(yn)(gu)ģMֱ˹ÿ|(zh)߶Ⱦ40 cmл|(zh)߶Ȟ35 cm;ԭˮɹM(jn)|(zh)ɹܵų.ԇ(yn)ϵy(tng)gЪM(jn)ˮʽ.

2.2.3 \(yn)йʽ

|(zh)ԇ(yn)bõ\(yn)зʽgЪ\(yn)Уÿԇ(yn)ڵˮؓ(f)ɞ250 LBm-2Bd-1ÿΌ(sh)(yn)ˮͣrg(HRT)12 h.|(zh)ԇ(yn)b\(yn)Еrg20142—20148ֹvr7.

2.2.4 ָ(bio)

Ҙ(bio)(zhn)CODCrt⛷;NH+4-Ncԇȷ;TN^-ֹȷ;NO-3-N÷Ӷֹȷ.

2.2.5 y(tng)Ӌ

SPSS 20.0(SPSS Inc.ChicagoUSA)M(jn)нy(tng)ӋW(xu)ط(ANOVA)Levene Rԙz(yn)Ͷر^жر^LSDz(yn)(dng)p<0.05r@; p<0.01rO@.

3 Y(ji)cӑՓ

3.1 ǰԼ(sh)(yn)ǰ|(zh)^Ե׃

D 1ZnFe-LDHsZnCo-LDHsڃԇ(yn)ǰԭʼ|(zh)SEMDV.ԭʼ|(zh)ֲҶ;ȃ(sh)(yn)ǰԭʼ|(zh)(5)ɷN|(zh)(13)SEMDVɰl(f)F(xin)(jng)^ͬʽM(jn)и̎󣬻|(zh)һ(sh)ĸw|(zh)ҸԷʽͬɵLDHsΑB(ti)Ҳͬ.

ȃ(sh)(yn)ǰͬN|(zh)SEMDV(246)Կԇ(yn)ǰԭʼ|(zh)ɷNԻ|(zh)ʬF(xin)ͬĠB(ti)ԭʼ|(zh)ZnCo-LDHsԻ|(zh)@м(x)СsF(xin)|(zh)ԭвֿ׵|(zh)wZnFe-LDHsԻ|(zh)׃@@f(jng)^ڃԇ(yn)^ZnFe-LDHsԻ|(zh)ZnCo-LDHsԻ|(zh)rЧ(yu).


D 1 ԭʼ|(zh)SEMDV(ԇ(yn)ǰ)

3.2 ǰ|(zh)W(xu)Mɳɷֵ׃

Axios advanced X侀ɹVxԭʼN|(zh)M(jn)лW(xu)ɷַ԰l(f)F(xin)SiO2ҪMɳɷֵ|(zh)1̖|(zh)Ժğʧȸǰ;õĽٻ(yng)ĽԪԺĺԭʼ|(zh)259̖Ի|(zh)Zn2+@|(zh);368̖|(zh)Mg2+ԭʼ|(zh); 456̖Ի|(zh)ЙzyCo3+fԌ|(zh)ĻW(xu)Mɳɷ֮a(chn)Ӱ.

Y(ji)ϸǰ|(zh)W(xu)Mɳɷּ׃Լ|(zh)SEMDVIJ԰l(f)F(xin)Ժ|(zh)ĻW(xu)ɷֺͱ^Ծl(f)˲̶ͬȵĸ׃@N׃cԕrĽٻɵLDHsĤP(gun);ɓ(j)ДLDHsĸĤԭʼ|(zh)ﻯԮa(chn)Ӱ.

3.3 Ի|(zh)CODCrăЧ

ɈD 2֪wԭʼ|(zh)9NԻ|(zh)CODCr^õ̎Ч.ԭʼ|(zh)CODCrƽȥ_(d)72%(sh)Ի|(zh)CODCrƽȥʶ5̖(ZnCo-LDHs)CODCrƽȥ_(d)82%̎Ч(wn);2̖(ZnFe-LDHs)ƽȥҲ_(d)79%.M(jn)9NԻ|(zh)cԭʼ|(zh)CODCrȥ@Էɰl(f)F(xin)5̖(ZnCo-LDHs)Ի|(zh)CODCrȥӰ푲@(p<0.05).


D 2 ǰCODCrȥ


 

˹ЙC(j)ȥǝػ|(zh)ս⹲ͬõĽY(ji);ЙC(j)ͨ^^Vñ|(zh)ȥɞ鲿ּԻ΢;ЙC(j)tͨ^Ĥռx^̱.LDHsĶ΢ט(gu)ʹøĤԻ|(zh)M(jn)ˮеЙC(j)r(qing)˱F(xin)^ߵȥ.

D 1ʾc2̖(ZnFe-LDHs)Ի|(zh)ԇ(yn)ǰ5̖(ZnCo-LDHs)|(zh)׃󣬸иļ(x)Сws|(zh)5̖Ի|(zh)иõĽ@ҲcЙC(j)ȥЧʸԻ|(zh)Č(sh)(yn)Y(ji)һ.LDHsĤ˱ȱe΢︽ڻ|(zh)棬ҲM(jn)һ(qing)΢ЙC(j)Ĵx^.

3.4 Ի|(zh)TNăЧ

D 3ԭʼԻ|(zh)TNƽȥ.ԭʼ|(zh)TNƽȥʃH37%9NԻ|(zh)TNƽȥʾ40%;2̖(ZnFe-LDHs)6̖(MgCo-LDHs)TNƽȥʷքe_(d)63%62%@;4̖(CaCo-LDHs)5̖(ZnCo-LDHs)̎Ч֮Ҳ_(d)58%;Ի|(zh)TNȥʾ40%~50%֮g.M(jn)9NԻ|(zh)cԭʼ|(zh)TN@Էɰl(f)F(xin)1̖(CaFe-LDHs)2̖(ZnFe-LDHs)4̖(CaCo-LDHs)5̖(ZnCo-LDHs)6̖(MgCo-LDHs)|(zh)TNȥӰ푲@(p<0.05).


D 3 ǰTNȥ

˹Ó^ɻ|(zh)ֲ΢ͨ^W(xu)^̵ąf(xi)ͬöɵ΢İͷ^ǵҪȥ;.ĤȥҪȺ̶ȱD(zhun)ԼЙC(j)|(zh)w|(zh)Y(ji)һĵeĤõȥ.4̖5̖6̖Ի|(zh)TNȥЧ^ã@fCo3+Zn2+ļЧĴM(jn)΢صĽ^;LDHsԺ|(zh)^õĸĤЧҲ΢ṩ˸ĸ;ڸԺڻ|(zh)渽LDHsж΢׽Y(ji)(gu)M(jn)˻|(zh)СҸͽM(jn)һTNȥЧ.

3.5 Ի|(zh)ăЧ

9NԻ|(zh)ԭʼ|(zh)ƽȥʴ80%(D 4).ԭʼ|(zh)1̖7̖Ի|(zh)Ի|(zh)ȥʾв̶ͬȵ2̖(ZnFe-LDHs)5̖(ZnCo-LDHs)NH+4-Nȥʷքe_(d)94%93%ȥЧ(wn);8̖(MgAl-LDHs)Ի|(zh)ƽȥҲ_(d)87%.M(jn)9NԻ|(zh)cԭʼ|(zh)@Էɰl(f)F(xin)2̖(ZnFe-LDHs)5̖(ZnCo-LDHs)ȥʵӰ푲@(p<0.05).


D 4 ǰȥ

ԭʼ|(zh)кܺõăЧһ@cȱe󣬱ֲڵc(din)P(gun)(D 1)M(jn)иĤԺγɵLDHswӄ˱IJ⻬̶ȣ΢ĸ;һ@ҲcLDHsĤ(qing)|(zh)(yng)cP(gun).

˹аB(ti)ȥҪ΢(yng)ͻ|(zh)ãˮеİ́º(yng)D(zhun)B(ti)څh(hun)ͨ^ɵ?d)ųϵy(tng)΢΢ԪZn2+һ̶܉ԇ(yn)ϵy(tng)΢øԇ(yn)е2̖(ZnFe-LDHs)5̖(ZnCo-LDHs)Ի|(zh)оZn2+䃞(yu)Ի|(zh)İȥЧҲӡCZn2+΢(yng)ĴM(jn);|(zh)ȥ߀һxӽQ(yng)LDHsеY(ji)(gu)ԺĻ|(zh)˸(qing)xcQ@Ҳ(yng)(qing)˸Ի|(zh)ȥЧ.


 

3.6 Ի|(zh)аcD(zhun)

B(ti)Ҫ΢ķԼB(ti)^Vñȥ΢ռҪλ.D 5ʾÿ|(zh)ԇ(yn)ijˮB(ti)ĝȾв̶ͬȵLҽ(jng)ԭʼ|(zh)̎ijˮB(ti)ƽLʾҪԻ|(zh).(jng)l(f)F(xin)@һF(xin)a(chn)ԭԇ(yn)ϵy(tng)ˮͣrg^һ|(zh)ԇ(yn)(ni)ȱh(hun)yM(jn)B(ti)ķe(do)µ.


D 5 ǰB(ti)L

ͨ^|(zh)ԇ(yn)ˮаcֵķ԰l(f)F(xin)(D 6)ԭˮаcֵ_(d)79.09ͨ^ԭʼ|(zh)9NԻ|(zh)(sh)(yn)ˮаcֵ@.2̖(ZnFe-LDHs)5̖(ZnCo-LDHs)ֵքe2.854.01ԭʼ|(zh)ˮаcıֵ;Ի|(zh)ԇ(yn)ˮеİcֵСc(yng)ƽȥʳؓ(f)P(gun).

Y(ji)όM(jn)ˮеİcֵ׃Ҏ(gu)ɵķД࣬ͨ^ԭʼ͸|(zh)ģMСԇϵy(tng)ˮеİЧD(zhun)B(ti);2̖(ZnFe-LDHs)5̖(ZnCo-LDHs)Ի|(zh)D(zhun)Ȟ@.


D 6 ǰԇ(yn)ˮа(ƽֵ)

M(jn)һcֵ½@2̖(ZnFe-LDHs)5̖(ZnCo-LDHs)10̖ԭʼ|(zh)ăԇ(yn)(sh)(j)M(jn)з䌦׷Nصƽȥؓ(f)DD 7ʾ.(j)ϵy(tng)еƽC(j)(Rµ2006)΢×lՓϵy(tng)аȫD(zhun)QB(ti)ȥpȥȥ(yng)ƞB(ti)L.

ͨ^D 7԰l(f)F(xin)2̖5̖Ի|(zh)аȥh(yun)ڿȥcB(ti)L֮ͣɴ˿Ҋԇ(yn)ϵy(tng)еİδȫD(zhun)QB(ti).@һwڲְ(yng)öõȥ;һ棬ڰ΢D(zhun)遆B(ti)D(zhun)B(ti)ڱϵy(tng)ͣrg^B(ti)(yng)δȫD(zhun)B(ti).⣬2̖(ZnFe-LDHs)5̖(ZnCo-LDHs)Ի|(zh)^ԭʼ|(zh)δȫD(zhun)QB(ti)İ࣬@ҲM(jn)һӡCZnϵ LDHsĤԻ|(zh)ﻯ(qing)


D 7 2̖5̖10̖|(zh)ƽȥؓ(f)

4 Y(ji)Փ

1)ͬMɵLDHsĤؼCODCrȥЧ;Co3+Zn2+cϳɵLDHs|(zh)CODCrȥЧ@;ZnFe-LDHs|(zh)ăЧ;ZnCo-LDHsCODCrƽȥ_(d)80%.

2)Zn2+cϳLDHsĸ|(zh)H(qing)|(zh)ﻯ̎ЧҲɌ(yng)a(chn)M(jn)@һЧcZn2+΢ӰP(gun).

3)ϵy(tng)ˮͣrgҪеصオ^̮a(chn)ӰֱӰ푵ˮвͬΑB(ti)صĽM.

 
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