BoxBehnken响应面法优化沼液氨氮削减工艺刘庆玉

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0,201354.506,0.74t[1],[2]。,,[3]。2013,4300,155m3[4]。,[5]。、、[6],[7]。,。(MgNH4PO4·6H2O,,MAP):,PO43-Mg2+NH4+,,,NH4+,PO43-Mg2+MgNH4PO4·6H2O[8],[9]。,[10],[11]。3[12]:Mg2++PO43-+NH4++6H2O=MgNH4PO4·6H2OMg2++HPO42-+NH4++6H2O=MgNH4PO4·6H2O+H+Mg2++H2PO42-+NH4++6H2O=MgNH4PO4·6H2O+2H+,Box-Benhken,pH、Mg/NP/NMAP,,MAP。11.1试验材料。,4℃,24h,,。1。1.2试验药品及主要仪器:NaH2PO4·2H2O(,≥99.0%)、MgCl2·6H2O(,≥98.0%)、HCl(,36%~38%)、NaOH(,≥96.0%),。:,752PC,pHS-25,FA1004,UltimaIVX。::20.33gMgCl2·6H2O[13]79.67g,:2015-06-29。:(2012ZX07202-010)。:(1967-),,,,。E-mail:qyliu@126.comBox-Behnken刘庆玉1,李建1,包震宇2(1.,110161;2.,110163):(MAP),,Box-Behnken,pH、Mg/NP/N,,。,:pH8.38,n(Mg)/n(N)1.32,n(P)/n(N)1.01。pHn(Mg)/n(N)n(P)/n(N);pHn(Mg)/n(N)pHn(P)/n(N),n(Mg)/n(N)n(P)/n(N)。91.61%,91.08%,0.53%,。:;;;Box-Behnken;:TK6;X703:A:1671-5292(2015)12-1866-061Table1Thecharacteristicsofbio-gasslurrypHNH4+-N/mg·L-1PO43--P/mg·L-1Mg2+/mg·L-17.251093.741.54RenewableEnergyResources第33卷第12期2015年12月Vol.33No.12Dec.2015·1866·DOI:10.13941/j.cnki.21-1469/tk.2015.12.01923.33%;:15.601gNaH2PO4·2H2O84.399g,15.601%;2mol/L:16.67mL,100mL;2mol/L:8g,100mL。1.3试验装置3,1。pH,,。1.4试验指标测量方法pHpHS-25,NH4+-N,PO43--P[14],[15]。1.5氨氮去除率的计算。,MAP。:Y=C1L1-C2L2C1L1×100%:Y,%;C1,C2NH4+-N,mg/L;L1,L2,L。22.1响应面试验设计单因素水平的确定2.1.1pH500mL,3n(Mg)∶n(N)∶n(P)=1∶1∶1,50r/min,15℃,30min[16],pH,2。2,pH7~8,pH,pH8~11,,pH8,74.09%。pH8。2.1.2n(Mg)/n(N)配比的确定500mL,n(N)∶n(P)=1∶1,50r/min,pH8,15℃,30min,n(Mg)/n(N),3。3,n(Mg)∶n(N)=0.9~1.3,,n(Mg)∶n(N)=1.3∶1,75.28%,,。n(Mg)∶n(N)=1.1∶1~1.5∶1。2.1.3n(P)/(N)配比的确定500mL,n(Mg)∶n(N)=1.3∶1,50r/min,pH8,15℃,30min,n(P)/n(N),4。4,n(P)∶n(N)=0.8∶1~1∶1,n(P)/n(N),,n(P)∶n(N)=1∶1,76.25%。PO43-,。n(P)∶n(N)=1∶1,1.1∶10.9∶1。1Fig.1Thedeviceoftheexperiment2pHFig.2TheeffectofpHvalueonremovalefficiency7891011pH646668707274/%3Mg/NFig.3TheeffectofMg/Nrationonremovalefficiency0.9∶1n(Mg)∶n(N)646668707274/%761∶11.1∶11.2∶11.3∶11.4∶11.5∶1·1867·,Box-Behnken响应面法优化沼液氨氮削减工艺2.2响应面试验设计及结果2.2.1Box-Behnkendesign-expert8.0.5Box-Benhken,,pH、Mg/NP/N。17,,12,5[17],3。2,3。2.2.2design-expert8.0.5,pH、Mg/NP/N()Y=-16.79+0.69A+8.21B+18.57C-0.11AB+0.34AC+0.96BC-0.05A2-3.13B2-11.21C2,4。4,F124.99,p0.0001,4P/NFig.4TheeffectofthedifferentP/Nrationonremovalefficiency0.8∶1n(P)∶n(N)6668707274/%760.9∶11∶11.1∶11.2∶11.3∶11.4∶178802Table2ThetableofdifferentfactorsandlevelsABCpHN(Mg)∶n(N)N(P)∶n(N)-171.1∶10.9∶1081.3∶11∶1191.5∶11.1∶13Table3Theresultsoftheexperiment1234567891011121314151617A-11-11-11-11000000000B-1-1110000-11-1100000C0000-1-111-1-11100000/%62.9774.2175.8378.3172.0473.9767.5482.9565.1166.7263.2172.5389.4292.1389.9391.2190.34:*(p0.05),**(p0.01)4Table4TheANOVAresultsoftheexperimentA(pH)B(Mg/N)C(P/N)ABACBCA2B2C21.74E-011.21E-029.72E-038.80E-041.92E-034.54E-031.49E-031.17E-026.58E-025.29E-021.08E-036.22E-044.62E-041.75E-019111111111734161.94E-021.21E-029.72E-038.80E-041.92E-034.54E-031.49E-031.17E-026.58E-025.29E-021.55E-042.07E-041.16E-04F124.9977.8362.765.6812.3829.329.5975.53424.91341.461.795515P0.00010.00010.00010.04870.00970.00100.01740.00010.00010.00010.2874****************R2=0.9938,R2=0.9859,R2=0.9391,=29.412,=1.62%·1868·2015,33(12),p0.2874,0.05,,,。pH、n(Mg)/n(N),n(P)/n(N)。pHn(Mg)/n(N)n(P)/n(N)。pHn(Mg)/n(N),pHn(P)/n(N),n(Mg)/n(N)n(P)/n(N)。R20.9859,1.5%,。4,10%。29.412,1.62%,,,。2.2.3Box-Behnken响应曲面分析与反应条件优化,(5)。5,。design-expert8.0.5:pH8.38,n(Mg)∶n(N)=1.32,n(P)∶n(N)=1.01,91.61%。,3,91.08%。0.53%,,,。2.3试验产物XRD衍射分析XRD,6。6,。15.78°,20.84°,33.26°,。PDF(PDF77-2303),6(b)MgNH4PO4·6H2O,0152025303540/(°)102000400060008000120001400010000(a)()6XRDFig.6XRDpatternsofMAPandexperimentproducts5Fig.5The3Dresponsesurfaceplotandcontourofthreefactors1.101.051.000.950.9060708090100/%C:n(P)/n(N)1.501.401.301.201.10B:n(Mg)/n(N)1.101.051.000.950.907.007.508.008.509.0060708090100/%A:pHC:n(P)/n(N)1.501.401.301.201.107.007.50A:pH8.509.0060708090100/%B:n(Mg)/n(N)8.00(b)0152025303540/(°)1020004000600080001200014000100001600018000·1869·,Box-Behnken响应面法优化沼液氨氮削减工艺MgNH4PO4·6H2O。3design-expert8.0.5Box-Behnken,pH、Mg/NP/N3,。,pHn(Mg)/n(N),n(P)/n(N),pHn(Mg)/n(N)n(P)/n(N),pHn(Mg)/n(N)pHn(P)/n(N),n(Mg)/n(N)n(P)/n(N)。,:pH8.38,n(Mg)/n(N)1.32,n(P)/n(N)1.01。91.61%,91.08%,0.53%,。XRD,MgNH4PO4·6H2O。MAP、,,,。,Ca2+,Cu2+,Zn2+,。。:[1].[J].,2014(5):10-13.[1]LuoRuyi.AviewofthepresentsituationofChina’spigindustryandmethodstoimprovethebreedingefficiency[J].HunanJournalofAnimalScience&VeterinaryMedicine,2014(5):10-13.[2].MAP-[D].:,2013.[2]ZhangDongmei.MAPprecipitationrecyclingofNandPfromswinewastewateranditsimpactsontraditionalanaerobicandaerobicprocesses[D].Hangzhou:ZhejiangUniversity,2013.[3],,,.[J].,2015,33(2):42-50.[3]CaoRukun,ChenHao,ZhaoYuzhu,etal.Resourceutilizationofbiogasslurry:currentstatusandfutureprospects[J].ChinaBiogas,2015,33(2):42-50.[4].2013[J].,2014,36(8):10-14.[4]TianYishui.CurrentsituationandtrendofruralenergydevelopmentinChinain2013[J].EnergyofChina,2014,36(8):10-14.[5].[J].,2015,31(4):106-112.[5]LvJie.Presentsituation,potentialandcountermeasuresoflivestockmanurerecyclinginthecircularagriculture:acaseinLiaozhongCountry[J].EcologicalEconomy,2015,31(4):106-112.[6]WeilandP.Biogasproduction:currentst

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