EXTRACTION OF SILICA FROM RICE HUSK ASH
CHAPTER ONE INTRODUCTION 1.1 BACKGROUND TO THE STUDY Critical economic and environmental situations of the current days encourage companies and researchers to develop and improve technologies intended to reduce or minimize industrial wastes. As a consequence, much effort has been expended in different areas, including the agricultural production. Rice is the second largest produced cereal in the world. Its production is geographically concentrated in Asia with more than 90 percent ...
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