Coal fly ash is a waste, obtained from the combustion of coal in thermal power plants. Fly ash is harmful and its disposal is the major issue from an environmental point of view. As fly ash contains silica and alumina, it is thought of interest to use it for the synthesis of porous material like zeolite. In this work, the focus is on the utilization of fly ash for the synthesis of Mordenite type zeolite and its application in the toxic metals removal from aqueous solution. Coal fly ash based Mordenite type zeolite (FZS H ) was synthesized by seed assisted hydrothermal synthetic method using fly ash as a source of silica and alumina instead of using pure silica and alumina. The resultant material was characterized by various techniques, such as SEM-EDX, XRD, TGA, FT-IR, solid state NMR, BET surface area, etc. The XRD patterns confirm the presence of Mordenite phase in the FZS H zeolite. The sorption behavior of Pb 2 + and Cd 2 + towards commercial Mordenite and FZS H Mordenite type zeolite is investigated and compared. Percentage uptake obtained using FZS H and commercial Mordenite zeolite sorbent was found quite similar. The kinetic and thermodynamic studies reveal the favourable and spontaneous nature of the sorption.

Colour Doppler and greyscale sonography should be routinely performed to improve detection of prostate carcinoma and to target the lesion.

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SYNOPSISCopolymerisation of N-phenyl maleimide ( NPM ) and y-methacryloxypropyl trimethoxysilane (MTS) in dioxan solution using benzoyl peroxide as an initiator is described. The rate of copolymerisation depended on the mole fraction of NPM in the initial feed and decreased with an increase in NPM content. Copolymers having a mole fraction of NPM varying from 0.29 to 0.55 exhibited similar thermal behaviour in terms of initial decomposition temperature or temperature of maximu.m rate of weight loss. However, char yield at 6OOOC depended on NPM content, showing a tendency to increase with the increase in NPM content.