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Home NEWS Science News

Wastewater cleaned thanks to a new adsorbent material made from fruit peels

Bioengineer by Bioengineer
March 23, 2017
in Science News
Reading Time: 2 mins read
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IMAGE

Credit: UGRdivulga

Researchers from the University of Granada (UGR), and from the Center for Electrochemical Research and Technological Development (Centro de Investigación y Desarrollo Tecnológico en Electroquímica, CIDETEQ) and the Center of Engineering and Industrial Development (Centro de Ingeniería y Desarrollo Industrial, CIDESI), both in Mexico, have developed a process that allows to clean waters containing heavy metals and organic compounds considered pollutants, using a new adsorbent material made from the peels of fruits such as oranges and grapefruits.

Said peels are residues which pose a problem for the food industry, given that they take up a great volume and aren't very useful nowadays. 38.2 million tons of said fruit peels are estimated to be produced worldwide each year in the food industry.

The research, in which the UGR participates, has served for designing a new process by which, thanks to an Instant Controlled Pressure Drop treatment, it is possible to modify the structure of said residues, giving them adsorbent properties such as a greater porosity and surface area.

Researcher Luis Alberto Romero Cano, from the Carbon Materials Research Team (Grupo de Investigación en Materiales de Carbón) at the Faculty of Science, UGR, explains that, by a subsequent chemical treatment, they "have managed to add functional groups to the material, thus making it selective in order to remove metals and organic pollutants present in water".

A subsequent research carried out by the authors of this paper has showed that it is possible to pack those new materials in fixed bed columns, in a way similar to a filter by which wastewater runs on a constant flux process, like the usual wastewater treatments. This laboratory-scale study has allowed to obtain parameters to design a large-scale use of said materials.

"The results show a great potential for the use of said materials as adsorbents capable of competing with commercial activated carbon for the adsorption and recovery of metals present in wastewater, in a way that it could be possible to carry out sustainable processes in which products with a great commercial value could be obtained from food industry residues", Romero Cano says.

###

Media Contact

Luis Alberto Romero Cano
[email protected]
52-442-113-6810
@canalugr

http://www.ugr.es

############

Story Source: Materials provided by Scienmag

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