Removal of Selenium from Chloride Media Using Bioadsorbent

Selenium is an important mineral for plants and living organisms. Trace amounts of selenium are needed for our everyday functions; however, when large amounts are consumed, it becomes really dangerous with adverse health effects; as a result of this, its removal has been the focus of many studies over the past decades. The mining and refining industries release the most amounts of selenium which are present in their wastewater in most cases. This paper will discuss the removal of selenium from chloride media by adsorption using biobased materials. Data analysis revealed that the adsorption rate of selenium on lignin progressed via the pseudo-second-order rate model. Adsorption isotherm model studies indicate that the adsorption of selenium by lignin followed the Freundlich adsorption isotherm. Other thermodynamic data were calculated to examine the nature and efficiency of selenium removal from chloride media.