CAJ | 학술논문

为拓宽竹材剩余物的开发应用新途径。以竹屑为原料,柠檬酸为改性剂,制备了柠檬酸改性竹屑吸附剂,以亚甲基蓝（MB）为吸附对象,考察了pH、时间、吸附剂投量及吸附温度等对吸附剂吸附MB效果的影响,并对其吸附动力学和热力学进行了分析。结果表明：溶液pH增大,吸附剂对MB的吸附量增大,pH在5-9间变动,吸附剂对MB吸附量变化不大;染料初始浓度和吸附温度增加,吸附剂对MB吸附能力增强;在吸附120min,吸附达到平衡,吸附动力学过程符合二级动力学模型,吸附热力学过程符合Langmuir模型;在25℃、35℃、45℃时,吸附剂对MB的最大吸附量分别为106.38 mg/g、121.95 mg/g和125mg/g;竹屑吸附剂对MB的吸附过程是一个吸热的自发过程。
위탁관죽재잉여물적개발응용신도경。이죽설위원료,저몽산위개성제,제비료저몽산개성죽설흡부제,이아갑기람（MB）위흡부대상,고찰료pH、시간、흡부제투량급흡부온도등대흡부제흡부MB효과적영향,병대기흡부동역학화열역학진행료분석。결과표명：용액pH증대,흡부제대MB적흡부량증대,pH재5-9간변동,흡부제대MB흡부량변화불대;염료초시농도화흡부온도증가,흡부제대MB흡부능력증강;재흡부120min,흡부체도평형,흡부동역학과정부합이급동역학모형,흡부열역학과정부합Langmuir모형;재25℃、35℃、45℃시,흡부제대MB적최대흡부량분별위106.38 mg/g、121.95 mg/g화125mg/g;죽설흡부제대MB적흡부과정시일개흡열적자발과정。
To develop new exploiting and utilizing ways for bamboo sawdusts.With bamboo sawdust as raw material,a bio-sorbent was prepared by using critic acid as modification agent,the effect on the adsorption to Mmethyl Blue(MB) by modified bamboo sawdusts were studied,of different adsorption conditions such as solution pH,dose of adsorben,dye con-centration,temperature and so on,the adsorption dynamicsand thermodynamic was analysised then.The adsorption capacity increased when pH increased,when the pH changed range from 5 to 9,the adsorption capacity showed little change;the adsorption capacity rised when MB concentration and temperature rised;the adsorption achieved equilibrium when the time of adsorption was 120min,the pseudo-second model and Langmuir equation were suited to describe the dynamics and thermodynamics;the maximum adsorption capacity was 106.38 mg/g,121.95mg/g and 125 mg/g when the temperature was 25℃,35℃ and 45℃ respectively;the overall adsorption to MB was endothermic and spontaneous.