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Production and Characterisation of Activated Carbon and Carbon Nanotubes From Potato Peel Waste and Their Application in Heavy Metal Removal

Production and Characterisation of Activated Carbon and Carbon Nanotubes From Potato Peel Waste and Their Application in Heavy Metal Removal

Ahmed I Osman, Jacob Blewitt, Jehad K Abu-Dahrieh, Charlie Farrell, Ala'a H Al-Muhtaseb, John Harrison, David W Rooney

Environ Sci Pollut Res Int. 2019 Dec;26(36):37228-37241.

PMID: 31745803

Abstract:

Herein, activated carbon (AC) and carbon nanotubes (CNTs) were synthesised from potato peel waste (PPW). Different ACs were synthesised via two activation steps: firstly, with phosphoric acid (designated PP) and then using potassium hydroxide (designated PK). The AC produced after the two activation steps showed a surface area as high as 833 m2 g-1 with a pore volume of 0.44 cm3 g-1, where the raw material of PPW showed a surface area < 4 m2 g-1. This can help aid and facilitate the concept of the circular economy by effectively up-cycling and valorising waste lignocellulosic biomass such as potato peel waste to high surface area AC and subsequently, multi-walled carbon nanotubes (MWCNTs). Consequently, MWCNTs were prepared from the produced AC by mixing it with the nitrogen-based material melamine and iron precursor, iron (III) oxalate hexahydrate. This produced hydrophilic multi-wall carbon nanotubes (MWCNTs) with a water contact angle of θ = 14.97 °. Both AC and CNT materials were used in heavy metal removal (HMR) where the maximum lead absorption was observed for sample PK with a 84% removal capacity after the first hour of testing. This result signifies that the synthesis of these up-cycled materials can have applications in areas such as wastewater treatment or other conventional AC/CNT end uses with a rapid cycle time in a two-fold approach to improve the eco-friendly synthesis of such value-added products and the circular economy from a significant waste stream, i.e., PPW. Graphical abstract .

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP166897401	Iron(III) oxalate hexahydrate		166897-40-1	Price

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