Department of Food Technology and Biochemical Engineering, Jadavpur University, 188, Raja S.C. Mullick Road, Kolkata 700032, India.
Department of Biological Chemistry, Indian Association for the Cultivation of Science, 2A & B Raja S.C. Mullick Road, Kolkata 700032, West Bengal, India.
Bioresour Technol. 2019 Jul;283:86-95. doi: 10.1016/j.biortech.2019.02.133. Epub 2019 Mar 12.
This study depicts successful employment of fixed bed column bioreactor for adsorption of lead in continuous mode using lentil husk as sorbent. Design parameters considerably controlled the reactor performance, amongst which height of the fixed bed and flow rate were crucial in generating cleaner effluent. Adsorption capacity was found to shoot up to the level of 205.87 mg g at 10 cm bed height, 100 mg L feed concentration and 20 mL min flow rate. Kinetic study done at regular intervals of time revealed high percentage removal of lead (99-96%) throughout entire span of reactor operation. Experimental data were well interpreted by Thomas model and Yoon-Nelson model. The reactor bed was regenerated after each adsorption and loaded metal was recovered up to the extent of ∼96%. The column reactor was efficient enough to treat lead containing actual industrial effluents.
本研究采用固定床柱生物反应器，以鹰嘴豆壳为吸附剂，成功实现了连续模式下的铅吸附。设计参数对反应器性能有很大的影响，其中固定床的高度和流速对产生更清洁的流出物至关重要。在 10cm 床高、100mg/L 进料浓度和 20mL/min 流速的条件下，吸附容量高达 205.87mg/g。定时进行的动力学研究表明，在整个反应器运行过程中，铅的去除率很高（99-96%）。实验数据通过 Thomas 模型和 Yoon-Nelson 模型得到了很好的解释。每次吸附后都对反应器床层进行再生，负载金属的回收率高达约 96%。该柱式反应器足以处理含铅的实际工业废水。
