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活性炭对溶解性有机氮类化合物(DON)的吸附特性研究 被引量:2

Adsorption characteristics of dissolved organic nitrogen on granular activated carbons
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摘要 采用静态吸附法研究了活性炭对水中溶解性有机氮(DON)的吸附能力和吸附特性,试验结果表明:在椰壳、桃核、木质和煤质四种活性炭中,桃核活性炭对DON亲和性与吸附容量最高;中性偏碱性的pH环境更利于DON在活性炭上的吸附;不同温度下的动力学研究表明升温不利于DON的吸附;热力学参数ΔH<0,ΔG>0表明活性炭对DON的吸附属于非自发的放热反应,为化学吸附。 采用静态吸附法研究了活性炭对水中溶解性有机氮(DON)的吸附能力和吸附特性,试验结果表明:在椰壳、桃核、木质和煤质四种活性炭中,桃核活性炭对DON亲和性与吸附容量最高;中性偏碱性的pH环境更利于DON在活性炭上的吸附;不同温度下的动力学研究表明升温不利于DON的吸附;热力学参数ΔH&lt;0,ΔG&gt;0表明活性炭对DON的吸附属于非自发的放热反应,为化学吸附。
出处 《给水排水》 CSCD 北大核心 2011年第S1期5-11,共7页 Water & Wastewater Engineering
基金 国家自然科学基金(50678080) 中国科学院百人计划项目 知识创新工程重要方向资助项目(KZCX2-YW-452)
关键词 活性炭 溶解性有机氮 吸附 饮用水 Activated carbon Dissolved organic nitrogenous compounds Adsorption Drinking water
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参考文献12

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