Liquid Waste Treatment and Immobilization Using Local Geomedia

Abstract

Title: Liquid Waste Treatment and Immobilization Using Local Geomedia In this study it is intended to benefit from the using of low cost clay minerals supplied from Egyptian mine. These clay minerals can be used as a selective adsorbent without any physical or chemical modification to represent one of the most effective possibilities for removal of some radionuclides that may be released from nuclear reactors waste. Also these clays as cheap and plentiful materials can be used for retarding the migration of radionuclides that being arise from the nuclear waste disposal sites to the ground water flow path. The thesis was subdivided into four main chapters including: the introduction in chapter 1, experimental in chapter 2, results and discussion part in chapter 3 and 4. Chapter-1: The introduction includes radioactive waste identification, radioactive waste categories according to the international atomic energy authority and some brief notes related to the environmental impact of this radioactive waste. Descriptions of natural geomedia as low cost adsorbents include bentonite with its types of (sodium, calcium and potassium bentonite) and kaolin. This part also includes adsorption process definition and its types of chemisorptions and physisorptions. This chapter also contains the literature review about the environmental behavior of six radionuclides including barium, nickel, cobalt, cesium, europium and strontium as well as the general objective of the current work is stated.