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E-learning has gained recognition both within and outside, in the field of library science throughout the world. It introduces not only global and distributed, but also Virtual Learning environment to the library users. In the context of Library and Information Science, e-learning is an increasingly important approach to user education, information literacy and Continuous Professional Development Programmes (CPDPs) etc. This book attempts to t...

This book gives a comprehensive discussion on the removal of heavy metal ions from electroplating wastewater sludge using acid dissolution. Hydrochloric acid, nitric acid and aqua regia solutions were used to dissolve the metals at various reaction conditions. Metals that were tested include Silver, Aluminium, Copper, Tin, Iron, Nickel and Zinc. The optimal recovery values obtained for the above metals were 99.5%, 72.6%, 99.6%, 55.4%, 19.4%, 4...