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1、中國(guó)環(huán)境科學(xué)2011,31(1)：50~55ChinaEnvironmentalScience表面改性秸稈生物質(zhì)環(huán)境材料對(duì)水中PAHs的吸附性能*何嬌,孔火良,高彥征(南京農(nóng)業(yè)大學(xué)資源與環(huán)境科學(xué)學(xué)院,土壤有機(jī)污染控制與修復(fù)研究所,江蘇南京210095)摘要：300~700℃下熱解炭化芝麻秸稈8h后,再用H3PO4溶液進(jìn)行表面改性,制備了芝麻秸稈生物質(zhì)環(huán)境材料.測(cè)定了生物質(zhì)環(huán)境材料比表面積及其對(duì)亞甲基藍(lán)和碘的吸附能力,并以多環(huán)芳烴(PAHs)為目標(biāo)污染物,探討了生物質(zhì)環(huán)境材料對(duì)水中不同固液比(0.01g/32ml和0.02g/32mL)下單一PAHs菲以及復(fù)合
2、PAHs萘、苊、菲的吸附性能.結(jié)果表明,隨熱解溫度升高,秸稈生物質(zhì)環(huán)境材料比表面積增大,對(duì)碘和2亞甲基藍(lán)的吸附能力也增強(qiáng),700°C時(shí)比表面積、碘值和亞甲基藍(lán)吸附值的最大值分別為269.95m/g、434mg/g和150mg/g.生物質(zhì)環(huán)境材料吸附水中PAHs的能力強(qiáng),700℃時(shí)0.01g材料對(duì)32mL水中萘、苊、菲的去除率分別高達(dá)94.44%、95.47%和100%,均比相同條件下未經(jīng)H3PO4改性的秸稈生物質(zhì)環(huán)境材料高.關(guān)鍵詞：芝麻秸稈；生物質(zhì)環(huán)境材料；表面改性；多環(huán)芳烴；吸附中圖分類號(hào)：X703.1文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1000-6923(2011)
3、01-0050-06RemovalofPAHsfromaqueoussolutionbythesurfacemodified-stalkenvironmentalbiomaterials.HEJiao,KONG*Huo-liang,GAOYan-zheng(InstituteofOrganicContaminantControlandSoilRemediation,CollegeofResourceandEnvironmentalScience,NanjingAgriculturalUniversity,Nanjing210095,China).ChinaE
4、nvironmentalScience,2011,31(1)：50~55Abstract：Thesesamestalkswerepyrolyzedandcharredfor8hintherangeof300~700℃,andthensurfacemodifiedbyH3PO4,thestalkenvironmentalbiomaterialswasprepared.TheBETspecificsurfaceareas,methyleneblueandiodineadsorptioncapacityofthestalkenvironmentalbiomater
5、ialsweredetermined.Thesorptionefficiencyofthesematerialsonsinglepolycyclicaromatichydrocarbon(PAHs)andmixingPAHsnaphthalene,acenaphthene,andphenanthrenewereinvestigatedatdifferentsolid-liquidratios,respectively.TheBETspecificsurfaceareasofstalkbiomaterialsenlarged,andthesorptionabi
6、lityonmethyleneblueandiodineenhancedwithincreasingthetreatmenttemperature.Themaximum2valuesobservedat700°Cwere269.95m/gand434,150mg/g,respectively.TheobtainedstalkbiomaterialscouldeffectivelyremovethePAHsfromwater.Forinstance,94.44%,95.47%,and100%ofnaphthalene,acenaphthene,andphena
7、nthrenein32mLwaterwereremovedby0.01gbiomaterialsobtainedbysesamestalkat700℃.AndthesestalkenvironmentalbiomaterialshigherthanthosewithoutH3PO4-modifiedunderthesameconditions.Resultsofthisworkwouldprovidesomeinsightintothereuseofcropstalks,andalsoopenanewviewonthetreatmentoforganicpo
8、llutedwaterutilizingbiomat
