A PROCESS FOR THE PREPARATION OF STABLE IODATE-EXCHANGED SYNTHETIC HYDROTALCITE WITH ZERO EFFLUENT DISCHARGE

摘要

The present invention relates to a process for the preparation of stableiodate-exchanged hydrotalcite with zeroeffluent discharge. The iodate-exchanged hydrotalcite produced is useful asiodizing agent. The invention further relates to utilizationof alkaline effluent generated in the process of ion exchange of iodate intoSHT so as to fully recycle the residual iodate anion andalso utilize the alkali generated in the process for production of additionalquantities of iodate through reaction with iodine crystalsfollowed by electrochemical oxidation to obtain pure aqueous solution ofiodate salt which can be reused for preparation of the stableiodizing agent. The process gives zero effluent discharge hence economical.