Council of Scientific and Industrial Research

Kamlesh Prasad

Ramavatar Meena

Dibyendu Mondal

Chennur Radhakrishna Reddy

Puja Kumari

Nitin Trivedi

Arka Saha

Nripat Singh

Vishal Gupta

Mukesh Sharma

Ravi Singh Baghel

The present invention relates to the process for the scalable production of FeO/Fe, Sn & Zn doped graphene nanosheets from a naturally abundant seaweed resources such asand. The granules remained after the recovery of liquid juice from the fresh seaweeds were utilized as a raw material and a deep eutectic solvents (DESs) generated by the complexation of choline chloride and FeCl, ZnCland SnClwere employed as template as well as catalyst for the production graphene nanosheets functionalized with metals. Pyrolysis of the mixture of seaweed granules and DES at 700-900&#xb0; C. under 95% Nand 5% Hatmosphere resulted formation of metal doped graphene sheets with high surface area (120-225 m&#xb7;g) and high electrical conductivity 2384 mS&#xb7;mto 2400 mS&#xb7;m. The nanosheets thus obtained could remove substantial amount of fluoride from fluoride contaminated drinking water (95-98%).

Process for the production of graphene sheets with tunable functionalities from seaweed promoted by deep eutectic solvents

An integrated process for the recovery of a spectrum of commercially valuable products such as agar, cellulose, lipids, pigments and a liquid rich in minerals of agricultural importance directly from fresh seaweed without employing any catalyst driven in situ chemical conversions. Also solvents used during lipid extraction were shown to be used for three cycles without affecting the yield and quality of successive products. Furthermore, this new process is highly efficient and utilizes total seaweed raw material without any leftover biomass as solid waste.

Integrated process to recover a spectrum of bioproducts from fresh seaweeds

Growing community of inventors

Gujarat, India

Kamlesh Prasad