34.油母页岩及其废弃物对氮磷钾的吸附解吸特性研究

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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