Bostancı K., Sever B., Altıok E., Jarma Y. A., Kabay N., Arda M., ...Daha Fazla
Frontiers in Membrane Science and Technology, cilt.5, ss.1-11, 2026 (Hakemli Dergi)
Özet
The adsorption-membrane filtration hybrid process can be considered as an alternative method to classical fixed-bed adsorption for lithium recovery from aqueous media. This technique integrates adsorption and membrane filtration by combining advantages of both processes. It is possible to use fine particles having high surface area and faster kinetics in the adsorption-membrane filtration integrated method as adsorbent. Thus, less amount of adsorbent can be employed in the process and the cost of the process can be reduced. In this study, adsorption-membrane filtration process was utilized for lithium separation from geothermal water and its reverse osmosis concentrate by means of lithium selective adsorbent spinel type λ-MnO2
. During hybrid tests, effect of some operational parameters as adsorbent concentration, particle size of adsorbent, replacement speeds of saturated and fresh adsorbents, flow rate of permeate on lithium separation was investigated. In hybrid tests, the optimal operating conditions with powder λ-MnO2
adsorbent were defined as 2 g/L adsorbent concentration, 5 mL/min as permeate/feed flow rate, and 6 mL/min as adsorbent replacement rate. It was determined that by reducing permeate/feed flow rate and increasing saturated/fresh adsorbent replacement rate, the lithium separation could be accomplished more successfully.