摘要
研究了非活性固定化啤酒酵母废菌体对废水中重金属离子Pb2+的动态吸附特性,考察了动力学方程、热力学方程对试验的拟合效果,了解吸附过程的规律性.结果表明:Langmuir和Freundlich模型都能较好地拟合试验过程,但以Langmuir模型的拟合效果更好,相关系数达0.996 8,其最大吸附量为7.788 mg/g;拟合试验过程同时符合Thomas动力学模型,相关系数达0.954 7;当溶液中的初始ρ(Pb2+)(C0)和流速(Q)分别控制在20 mg/L和2 mL/min左右时,处理效果最好.通过对重金属废水的处理,可以达到以废治废的效果.
Dynamic biosorption of discarded and inactive-immobilized Saccharomyces cerevisiae on Pb^2＋ in wastewater as well as kinetics and thermodynamics equations was studied. Under given situations, research on model could reveal the rule of biosorption process. The results indicated that thermodynamics models of Langmuir and Freundlieh equations both conformed to the experiments and Langmuir model fitting effect was better with its relativity coefficient of 0.996 8 and maximum biosorption quantity 7.788 mg/g; kinetics equation Thomas model was adopted to the research with its relativity coefficient of 0.954 7, and the optimal treatment efficiency could be achieved with Co and Q of 20 mg/L and 2 mL/min, respectively. By disposing wastewater containing heavy metals, discarded wastes might be treated and certain kinds of poisonous and noxious metals would be collected.
出处
《环境科学研究》
EI
CAS
CSCD
北大核心
2008年第1期188-191,共4页
Research of Environmental Sciences
基金
黑龙江省普通高等学校青年学术骨干支持计划项目(1152G006)
黑龙江省博士后科研基金项目(LRB00068)
关键词
啤酒酵母废菌体
Pb^2+连续流反应器
吸附特性
discarded and inactive-immobilized Saccharomyces cerevisiae
Pb^2＋
contnuous-upflow reactor
biosorption character istics
