Graphene-based adsorbent synthesis and it’s use in industrial wastewater treatment

Graphene-based materials, including graphene and derivatives such as graphene oxide and graphene quantum dots, have considerable potential as key components in next-generation membrane technologies. Their tunable size, surface chemistry, and structure can be engineered for a spectrum of aqueous filtration purposes ranging from ultrafiltration to reverse osmosis1. Membrane-based separation technology has been introduced in dyes removal treatment and is well known for its advantages2. Previously various techniques such as nanofiltration, photodegradation, oxidation, biological treatment, adsorption, and liquid membrane separation have been developed for the degradation and removal of toxic dyes from contaminated water3,4. In this work, we have fabricated a GQD based polymer adsorbent. In a typical synthesis, GQD was synthesized through carbonization of citric acid and ammonia. The synthesized GQD was modified with methacrylic acid and (acrylamidomethyl)- cellulose acetate butyrate to form polymeric adsorbent. The different concentration of methylene blue solutions prepared and concentration of each solution before and after filtration was determined by UV spectrometer.

Keywords:

Graphene Quantum Dot (GQD) , Adsorbent , Polymer , Wastewater , Methylene blue