吸油草对海水中柴油的吸附及其影响因素研究.pdfVIP

5 3 环境 工程学 报 V o l. 5, N o. 3 2 0 1 1 3 Ch inese Journal of Env ironm enta l Eng ineering M ar . 2 0 1 1 * 陈丽丽 夏文香 李金成 赵 昕 肖行川 王振霞 ( , 2660 33 , , pH , , , 10~ 20 m in, 2~ 3 h, 9, 669 g / g 0325 g / g, 486% pH F reundlich BET , ; , , - 1256 kJ/m ol X703 A 167 39108( 20 11 Adsorption of diesel in seawater on spillsorb and their influencing factors Chen L ili X ia W enx iang L i J incheng Zhao X in X iao X ingchuan W ang Zhenx ia ( D epartm en t of Environm en tal and M un icipal Engin eering, Q ingdao T echnological U n ivers ity, Q ingdao 266033, Ch in a Abstract T he adsorption and desorption of diesel in seaw ater on sp illsorb and the ir influenc ing factors ( sa linity, pH, tem perature w ere stud ied, and the adsorption m echanism was discu ssed accord ing to adsorption i sotherm s and adso rpt ion therm odynam ics. Results show that the adsorpt ion and desorption of diese l in seaw ater on spillsorb fits the secondo rder reaction m odel, and the equ ilibr ium period of adsorption and desorpt ion is 10 ~ 20 m in and 2~ 3 h, respective ly, and the latter is longer than form er up to 9 t mi es. T he equ ilibrium adsorption and desorption capacity were 669 g / g and 0325 g / g respective ly, and the rate of desorption is 486% . The ad sorpt ion capacity increases w ith the increm ent o f sa lin ity and pH o f seaw ater, and decreases w hen the env iron m ental temperature rises. The adsorption isotherm s can be described as F reund lich s and BET equation, and the adsorption of diese l on sp illsorb belongs to physica l adso rpt ion according to adsorption therm odynam ics study, and the adsorption hea t in the process w as about - 1256 kJ/m o l.