A Comprehensive Review of Lab-Scale Studies on Removing Hexavalent Chromium from Aqueous Solutions by Using Unmodified and Modified Waste Biomass as Adsorbents oleh Manikant Tripathi, Sukriti Pathak, Ranjan Singh, Pankaj Singh, Pradeep Kumar Singh, Awadhesh Kumar Shukla, Sadanand Maurya, Sukhminderjit Kaur, Babita Thakur