Kalandar A, Yadav R H. Removal of Hexavalent Chromium from Aqueous Solutions using Some Plants Bark Powder as Adsorbents. STAR [Internet]. 2014 Dec. 30 [cited 2025 Apr. 3];3(4):99-106. Available from: https://journals.wgu.edu.et/index.php/star/article/view/514