AcSIR-XX-SP Societal Program Presentation

On Topic

Fluoride removal nalgonda technique : a traditional way of fluoride treatment and its extended form in morden world

Presented by

Diksha Choudhary

Ph.D. Scholar (Chemical Sciences) Enrolment Number: 10CC23J35003

Academy of Scientific & Innovative Research, Ghaziabad - 201002

CSIR- Advanced Materials and Processes Research Institute, Bhopal - 462026

Overview

• High levels of Fluoride were reported in 469 districts of 27 States of India.
• Nearly 90 million people including 6 million children in the country are affected by dental, and skeletal fluorosis.
• To solve this problem our ancestors uses a traditional Nalgonda technique for fluoride removal in drinking water.
• Nalgonda technique is one of the oldest defluoridation techniques, originated in a village in Andhra Pradesh, India.
• This technique could be used with morden science idea.

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How we can use this technique ?

• In this technique, fluoride-contaminated water is treated by adding aluminum salt, and lime followed by flocculation, sedimentation, and filtering.
• Taking an idea from here we can make alumina/calcium-based water filters for defluoridation in water.
• Some researchers already reported about alumina and calcium-based oxides or matrix’s performance regarding fluoride treatment.
• So taking this hypothesis we proposed a defluoridation technique on adsorption-based water filters.
• It’s a low-cost fluoride treatment technique.
• Portable water filter, straw shaped single column based water filter can be made, for effective fluoride treatment.
• In this column filter adsorbent materials like alumina and calcium could be used as adsorbent bed in column.
• this could be a cost-effective adsorption technique, which is suitable for rural areas.

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Working mechanism