CAJ | 학술논문

湖泊的富营养化问题日益严重,已给人类的生产、生活带来了极大的危害.而氨氮废水的大量排放,使原本恶化的湖泊水雪上加霜.为了去除富营养化湖水中氨氮,研究了硅酸钙对氨氮的吸附性能.经检测可知水样中氨氮的质量浓度为1.12 mg?L-1,实验结果表明,用粒径大小为100目的硅酸钙吸附剂处理100 mL的水样,当投加量为1.0 g,pH为8,震荡时间为60 min时吸附达到平衡,硅酸钙对富营养化湖水中氨氮的去除率达到81.67%;其吸附等温线符合Langmuir和Freundlich吸附等温式,线性相关系数分别为0.9639和0.9793,最大吸附量为6.60 mg?g-1;由此可见硅酸钙能够很好地吸附富营养化水体中的氨氮.
호박적부영양화문제일익엄중,이급인류적생산、생활대래료겁대적위해.이안담폐수적대량배방,사원본악화적호박수설상가상.위료거제부영양화호수중안담,연구료규산개대안담적흡부성능.경검측가지수양중안담적질량농도위1.12 mg?L-1,실험결과표명,용립경대소위100목적규산개흡부제처리100 mL적수양,당투가량위1.0 g,pH위8,진탕시간위60 min시흡부체도평형,규산개대부영양화호수중안담적거제솔체도81.67%;기흡부등온선부합Langmuir화Freundlich흡부등온식,선성상관계수분별위0.9639화0.9793,최대흡부량위6.60 mg?g-1;유차가견규산개능구흔호지흡부부영양화수체중적안담.
Ammonia nitrogen has seriously jeopardized the lake water, that cause eutrophic phenomenon. Which has brought great harm to human production and life. This experiment presents a study of the removal of ammonia nitrogen from eutrophic lake water using calcium silicate. The concentration of ammonia nitrogen in water samples is 1.12 mg?L-1. The results of this experiment show that the removal rate of ammonia nitrogen could reach 81.67%when adsorption is equilibrious, using 100 mesh of calcium silicate, as pH is 8, the dosage of calcium silicate is 1.0 g per 100 mL water samples, and the oscillating time is 60 min. The results show that the adsorption plots fit to Langmuir and Freundlich models very well,and the correlation coefficient of Langmuir and Freundlich isotherms were 0.963 9 and 0.979 3, with the maximum ammonium adsorption capacity of 6.60 mg?g-1. So calcium silicate can effectively remove ammonia nitrogen from eutrophic lake water.