【摘要】 为解决水体中磷过量造成的水体富营养化问题，以花生壳为原料，牡蛎壳为钙源，制备了牡蛎壳改性花生壳生物炭（CaBC）,并探究磷初始浓度、吸附剂投加量、pH和时间对CaBC吸附去除磷的影响。试验结果表明，CaBC对水体中磷吸附量显著高于未改性花生壳生物炭对水体中磷吸附量。在初始浓度为200 mg/L,生物炭的投加量为2 g/L,初始pH为3时，经过40 min的吸附后，生物炭对水体中磷的处理吸附量达到最大值198.7 mg/g。FTIR和XRD结果显示，CaBC表面负载的Ca（OH）₂和磷酸根发生化学反应生成了羟基磷灰石结晶[Ca₅（PO₄）₃（OH）],使得水体中的磷吸附在该钙改性生物炭表面，从而达到良好的吸附去除磷的效果。更多还原

【Abstract】 To solve the problem of water eutrophication caused by excessive phosphorus in the body,water（Ca BC）calcium-decorated biochar materials,is prepared using peanut shells as raw materials and initial oyster shells as modified and the initial concentration of P the dosage of adsorbent p H and xment time were investigated.The experiment result shows that adsorption capacity for phosphorus of Ca BC was higher than that of unmodified peanut shell biochar.When the initial conthe mg/L,200g/L,3,was centration of P was the dosage of biochar was2and the initial p H after admg/g sorption capacity for phosphorus of Ca BC reached the maximum198.7adsorption adsorption for to40min.FTIR and XRD analysis indicated that the preferable ability to P was due crystal,the the P PO₄^3-,Ca（OH）₂ and of[Ca₅（PO₄）₃（OH）]reaction forming the hydroxylapatite insolutionwastransformedtothecrystal.Hence,Ca BChadapreferablephosphorusremovaleffect.更多还原