Leta i Linköpings universitets forskning

På LiU E-Press har vi registrerat de flesta publikationer från LiU. Skriv några nyckelord, välj publikationstyp...

Title
Extracting metal ions from water with redox active biopolymer electrodes
Article in journal
Authors
Shimelis Molla, Anders Elfwing, Andreas Skallberg, Olle Inganäs
Publication Year
2015
Source
ENVIRONMENTAL SCIENCE-WATER RESEARCH and TECHNOLOGY, 2015, (1)3, 326-331
Link to Source (DOI)
10.1039/c4ew00097h
Abstract
<p>Renewable, environmentally friendly and cheap materials like lignin and cellulose have been considered as promising materials for use in energy storage technologies. Here, we report a new application for biopolymer electrodes where they can also be simultaneously used as ion pumps to purify industrial wastewater and drinking water contaminated with toxic metals. A ternary composite film consisting of a conducting polymer polypyrrole (PPy), biopolymer lignin (LG) and anthraquinonesulfonate (AQS) was synthesized by one-step galvanostatic polymerization from an aqueous electrolyte solution. X-ray photoelectron spectroscopy (XPS) and scanning electron microscopy-energy dispersive X-ray spectroscopy (SEM-EDX) techniques revealed that lead ions can be extracted from a neutral aqueous solution containing lead ions by applying a potential, and can be released into another solution by reversing the polarity of the applied potential. Electrochemical quartz crystal microbalance was used to quantify the amount of metal ions that can be extracted and released.</p>