Scientists use liquid tobacco waste and iron residue to remove Cd(II)

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Block diagram of the manufacturing process and adsorption mechanisms of [email protected]@SP. 1 credit

According to a new study published in Langmuira kind of iron-based carbon microsphere has been successfully prepared from liquid tobacco waste (TWL) and residual iron waste (WIR) to remove cadmium ion (Cd(II)) from water and ground.

This research was conducted by researchers led by Professor Wu Zhengyan of the Hefei Institutes of Physical Sciences (HFIPS) of the Chinese Academy of Sciences.

The non-nutritive metal was considered harmful to the environment and humans. With the rapid development of metallurgy, electroplating, pigment, mining and battery industries, cadmium pollution is becoming more and more serious. About 30,000 tons of TWL are released into the environment every year, causing serious pollution.

The researchers attempted to reuse two wastes in this study. They named the new iron-based magnetic carbon microsphere [email protected]

To improve the stability and increase the active groups of the [email protected] particle, the researchers coated the magic microsphere with sodium polyacrylate to form [email protected]@SP. They used this method to improve the removal efficiency of Cd(II) because the hydrochar was stable on the surface of WIR and the carboxyl group was modified on the surface of [email protected]@SP.

Cation exchange, electrostatic attraction, hydrogen bond interaction, and cation-π interaction have also been included in the elimination mechanisms.

Co-hydrothermal treatment was also an innovation, and no one had used this method to make [email protected] before, according to the researchers.


Iron-based primary battery provides rapid removal of heavy metal contaminated water


More information:
Qingchuan Wu et al, Synthesis of Iron-Based Carbon Microspheres with Liquid Tobacco Waste and Iron Residues for Cd(II) Removal from Water and Soil, Langmuir (2022). DOI: 10.1021/acs.langmuir.2c00125

Provided by Chinese Academy of Sciences


Quote: Scientists use liquid tobacco waste and iron residues for Cd(II) removal (2022, April 25) Retrieved June 13, 2022 from https://phys.org/news/2022-04-scientists -tobacco-liquid-iron-residue.html

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