Sadhana Suresh Rayalu

Title: Sadhana Suresh Rayalu: Innovations in Zeolite Materials and Water Treatment.

Introduction

Sadhana Suresh Rayalu is an inventor based in Nagpur, India, whose work includes zeolite materials and processes for addressing water-treatment challenges. She is associated with the Council of Scientific and Industrial Research and has 3 patents.

Latest Patents

One of Rayalu’s inventions concerns surface-modified zeolite and its synthesis for sequestering anions. The process modifies commercial or fly-ash-based zeolites with surfactants such as hexadecyltrimethyl ammonium bromide. The resulting materials are designed to capture oxyanions through surface complexation and precipitation. Incorporating metal ions can improve arsenic uptake, with the stated aim of reducing arsenic in drinking water to 10 parts per billion. The materials may also be used to remove chromium and selenium.

Another invention describes a process for synthesizing zeolite-Y from fly ash. It involves mixing fly ash with caustic soda, heating the mixture to form a fused mass, and then milling and mixing it with water. The slurry undergoes hydrothermal crystallization, after which the crystals are washed and dried. The process provides a method for producing fly-ash-based zeolite-Y.

Career Highlights

Rayalu’s patent work focuses on developing zeolite materials and synthesis methods with potential environmental applications. Her inventions address both the use of fly ash as a starting material and the removal of contaminants from water.

Collaborations

Rayalu’s listed coworkers include Nitin Kumar Labhasetwar and Purushottam Khanna. Her organizational affiliation is the Council of Scientific and Industrial Research.

Conclusion

Sadhana Suresh Rayalu’s inventions combine zeolite synthesis with water-treatment applications, including approaches for removing arsenic and other anions.