Research of bittern concentration processes lake Karaumbet and Barsakelmes Ziyodullo Otakuziyev, Diyorbek Absattorov, Mohamed Rifky, Shokir Rakhimkulov, Ilkham Usmanov, Dilbar Ramazonova, Zaynobiddin Matkarimov and Murodjon Samadiy E3S Web Conf., 411 (2023) 02035 Published online: 10 August 2023 DOI: 10.1051/e3sconf/202341102035