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时间:2019-03-06
《34.油母页岩及其废弃物对氮磷钾的吸附解吸特性研究》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、中国雉学c童搪2010,26(11):168—172ChineseAgriculturalScienceBulletin油母页岩及其废弃物对氮磷钾的吸附解吸特性研究张慧,颜丽,杜舰,王圆方,关连殊(沈阳农业火学,沈阳110161)摘要:探明油母页岩(尾矿和贫矿)及其废弃物(灰渣)对氮、磷、钾离子的吸附及解吸特性,为进一步拓展油母页岩及其废弃物在农业上的应用提供理论参考。采用平衡法对氮、磷、钾离子的吸附及解吸特性展开深入研究。结果表明,油母页岩及其废弃物对氮的吸附量和解吸率以尾矿最大,其最大吸附量和平均解吸率分别为1429mg/kg和73.72%,是灰渣和贫矿的1.86、1.04倍和2.29、
2、1.09倍;尾矿对磷的吸附量和解吸率均最大,其最大吸附量和平均解吸率分别为909.1mg/kg和13.86%,是灰渣和贫矿的1.27、2.67倍和2.45、1.22倍;对钾的吸附量和解吸率也以尾矿最大,其最大吸附量和平均解吸率分别为2500mg/kg和87.20%,是贫矿和灰渣的2.00、1.O3倍和4.25、1.22倍。由此可见,油母页岩尾矿对氮、磷、钾的吸附解吸能力均最强,具有作为土壤保肥物质开发的可能性。关键词:油母页岩;氮、磷、钾;吸附;解吸中图分类号:S153文献标志码:A论文编号:2010—0428TheCharacteristicsofNitrogenPhosphorusPot
3、assiumAdsorptionandDesorptioninOilShaleandResidueZhangHui,YanLi,DuJian,WangYuanfang,GuanLianzhu(ShenyangAgriculturalUniversity,Shenyang110161)Abstract:Thetheorybasiswassuppliedonthefurtherdevelopmentofapplicationofoilshaleandresidueinagriculturebythestudywhichthecharacteristicsofnitrogen,phosphorus
4、,potassiumadsorptionanddesorptioninoilshale(debrisandleanore)andresidue(ash).ThecharacteristicsofN,P,Kadsorptionanddesorptioninoilshaleandresiduewereinvestigatedbyusingtheequilibriummethod.Theresultsshowedthat,thenitrogenmaximumadsorptivecapacityandtheaveragedesorptionrateofthe0ilshaledebrisateboth
5、thehighest.theformeris1429mg/kg,whichis1.86timesofashand2.29timesofleanore,andthelateris73.72%,whichis1.04timesofashand1.09timesofleanorerespectively.Thephosphorusmaximumadsorptivecapacityandtheaveragedesorptionrateoftheoilshaledebrisareboththehighest,theformeris909.1mg/kg,whichis1.27timesofashand2
6、.45timesofleanore,andthelateris13.86%,whichis2.67timesofashand1.22timesofleanorerespectively.Thepotassiummaximumadsorptivecapacityandtheaveragedesorptionrateoftheoilshaledebrisareboththehighest,theformeris2500mg/kg,whichis2.00timesofleanoreand4.25timesofash,andthelateris87.20%,whichis1.03timesoflea
7、noreand1.22timesofashrespectively.TheadsorptioncapacityanddesorptionrateofN,P,Kinoi1shaledebrisareallthehighest.Thereisapossibilitytodevelopoilshaledebrisasasoilfertilizermateria1.Keywords:oilshale;nitrogen
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