延边大学学报：自然科学版
延邊大學學報：自然科學版
연변대학학보：자연과학판
Journal of Yanbian University：Natural Science
2012年
3期
228-231
,共4页
玉米秸秆%改性%Pb2+%吸附
玉米秸稈%改性%Pb2+%吸附
옥미갈간%개성%Pb2+%흡부
corn straw%modified%Pb2+%adsorption
对改性玉米秸秆对水体中重金属Pb2＋的吸附性能进行了研究.结果表明：在浓度≤30mg/L的Pb2＋的水体中,当改性秸秆的加入量为0.2g、pH值为6.0～8.0、温度为298K时,经过40min即可达到吸附平衡,且Pb2＋的吸附率为94.57%,吸附量为9.01mg/g.采用双常数方程拟合该吸附过程的动力学特征曲线,R2为0.867 7;其吸附等温线可用Langmuir和Temkin方程很好地拟合,其中Langmuir方程拟合得最好（R2为0.996 6）,最大饱和吸附量为9.12mg/g.
對改性玉米秸稈對水體中重金屬Pb2＋的吸附性能進行瞭研究.結果錶明：在濃度≤30mg/L的Pb2＋的水體中,噹改性秸稈的加入量為0.2g、pH值為6.0～8.0、溫度為298K時,經過40min即可達到吸附平衡,且Pb2＋的吸附率為94.57%,吸附量為9.01mg/g.採用雙常數方程擬閤該吸附過程的動力學特徵麯線,R2為0.867 7;其吸附等溫線可用Langmuir和Temkin方程很好地擬閤,其中Langmuir方程擬閤得最好（R2為0.996 6）,最大飽和吸附量為9.12mg/g.
대개성옥미갈간대수체중중금속Pb2＋적흡부성능진행료연구.결과표명：재농도≤30mg/L적Pb2＋적수체중,당개성갈간적가입량위0.2g、pH치위6.0～8.0、온도위298K시,경과40min즉가체도흡부평형,차Pb2＋적흡부솔위94.57%,흡부량위9.01mg/g.채용쌍상수방정의합해흡부과정적동역학특정곡선,R2위0.867 7;기흡부등온선가용Langmuir화Temkin방정흔호지의합,기중Langmuir방정의합득최호（R2위0.996 6）,최대포화흡부량위9.12mg/g.
The adsorption of heavy metal ion Pb2+ in water with the modified corn straw are studied.The results show that the adsorption rate of Pb2+ in water is 94.57%,adsorption capacity is 9.01 mg/g and absorbing equilibrium time is 40 minutes,when the dosage of corn strawis 0.2g pH is 6.0-8.0 and adsorbing temperature is 298K for the Pb2+ concentration in water is less than 30 mg/L.Two-constant equation can be used to fit the dynamics characteristic curve,R2 is 0.867 7;both Langmuir and Temkin equation can be used to fit well the adsorption isotherm,moreover,the former is better than the latter,R2 is 0.996 6,the maximum amount of saturated adsorption is 9.12 mg/g.
