National University of Uzbekistan named after Mirzo Ulugbek (Tashkent, Uzbekistan)

N. X. Qutlimurotova^*, Doctor of Chemical Sciences, Professor, nigora.qutlimurotova@mail.ru
U. R. Akhmedova, Doctoral Student, umida_r@nuu.uz
O. B. Tuyeva, Doctoral Student, toyeva_o@nuu.uz

S. B. Maxmadoliyev, PhD, maxmadoliyevsalohiddin@mail.ru

Jizzakh State Pedagogical University named after Abdulla Qadiriy (Jizzakh, Uzbekistan)
Z. Z. Yakhshiyeva, Doctor of Chemical Sciences, Professor, axshiyeva67@mail.ru

^*Correspondence author.

This study presents the development and experimental substantiation of a sorption-based process for selective lithium recovery from highly mineralized brines. The process integrates alkaline precipitation of interfering cations with dynamic sorption using acetophosphate cellulose as a selective sorbent. The static exchange capacity of the developed sorbent was determined as 25.48 mg/g, with lithium desorption efficiency reaching 98.25% and sorbent stability maintained through 10 consecutive sorption-desorption cycles (93% capacity retention). The process demonstrates selective lithium extraction under moderate temperature conditions without toxic organic solvents, providing a scientific foundation for subsequent technological development and pilot-scale implementation. The results demonstrate both scientific significance and technological applicability of the proposed process.

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