采煤沉陷区沉积物和土壤对 氨氮吸附特征的研究

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中图分类号：X752 文献标识码：B 文章编号：1004-8901（2025）04-0029-03

Studyon theAmmonia Nitrogen Adsorption Characteristicsof Sediments andSoilinCoalMiningSubsidenceAreas

YULe （AnhuiConstruction EngineeringTesting&Research InstituteCo.，Ltd.，HefeiAnhui 23Oo51，China）

Abstract：Acompaisonstudyisductedoeamplesoftheimentsfromtheaterlogedendoilfoteonwaterlgdef thePanxieMinigDistrictinHuainanCity，toknowteadsorptioncharacteristicsfonanitrogenTeresultsshowthatwitinthefist 150minutes，sdimentsandsoilsamplesrapidlyadsorbmonianitrogen，andeachdamicadsorptionquilibmin5Onutesese ond-orderratemodel betterfitsthe kinetic processofammonianitrogenadsorption.Themaximumadsorption capacity（ Qmax ）ranges from 461.86mg/kg to 624.37mg/kg ，showing a strong correlation with the Background Adsorption Capacity （C0） ，Total Maximum Adsorption Capacity （C0+Qmax） ，Adsorption-desorption Equilibrium Concentration （X0） ，and Adsorption Efficiency（K）.The Henry equation effectively simulates the isothermal adsorption process of ammonia nitrogen by sediments and soil at concentrations up to 10mg/L .The Adsorption-desorption Equilibrium Concentration （X0） variesbetween（ ）.158mg/L and 0.408mg/L ，showing strong correlations with C0 ， Qmax ， C0+Qmax ，andK. Keywords：ammonia nitrogen；adsorption-desorption；coal mining subsidence area；soil；sediment

di 10，3969/j ieen 10n4_80n12095 n4nng

淮南潘谢矿区属于我国东部地区的煤粮复合产地，同时为高潜水位厚松散层区，井工采煤活动导致了大面积的沉陷区，包括积水区与未积水区。（剩余4530字）