Open AccessSynthesis of starch-graphene oxide composite membrane for heavy metal removal
Author(s) -
B. Sajeena Beevi,
K Blessmy Rose,
K Aleena Shelvi,
Manoj Kumar,
Reethu Mathew
Publication year - 2021
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1114/1/012086
Subject(s) - graphene , materials science , oxide , metal ions in aqueous solution , biopolymer , chemical engineering , membrane , amylopectin , scanning electron microscope , raman spectroscopy , nanomaterials , starch , composite number , metal , nuclear chemistry , amylose , nanotechnology , chemistry , composite material , metallurgy , organic chemistry , polymer , biochemistry , physics , engineering , optics
The development of a cost-effective biopolymer composite membrane using starch is found to be efficient to be used for heavy metal removal from waste water. In the present work we have used starch containing amylose/amylopectin as the biopolymer and graphene oxide (GO) as the carbon nanomaterial to develop the composite membrane. Synthesis of graphene oxide, characterization of the graphene oxide, composite preparation using starch-graphene oxide, development of the membrane, characterization and analysis of the heavy metal removal efficiency were the major objectives of the present work. Scanning electron microscopy (SEM), Atomic absorption spectroscopy (AAS) and Raman spectroscopy were used for the characterization studies. Analysis being done for studying the effectiveness of membrane for removal of heavy metal ions including Pb, Cd, Zn and Mg by varying certain parameters, revealed that the membrane is efficient in the range 85-95 % for lower concentrations of these metals in the waste water.