Cadmium elimination from wastewater using potato peel biochar modified by ZIF-8 and magnetic nanoparticle

• Published in: Colloid and interface science communications Vol. 55; p. 100723
• Main Authors: Foroutan, Rauf, Peighambardoust, Seyed Jamaleddin, Ghojavand, Solmaz, Farjadfard, Sima, Ramavandi, Bahman
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.07.2023
• Subjects: Adsorption; Industrial wastewater; Nanocomposite; Potato peel biochar; ZIF-8; Industrial wastewater; Nanocomposite; Adsorption; ZIF-8; Potato peel biochar
• ISSN: 2215-0382; 2215-0382
• DOI: 10.1016/j.colcom.2023.100723

A recyclable and magnetic nanocomposite was fabricated from biochar of potato peel (BPP), MnFe2O4, and ZIF-8 (BET area: 174.92m2/g). The Cd2+ removal using BPP/MnFe2O4@ZIF-8 was maximized at pH 6, a temperature of 45 °C, and a time of 100 min. The capacity of Cd adsorption using BPP, BPP/MnFe2O4, and BPP/MnFe2O4@ZIF-8 was computed to be 33.76, 45.02, and 80.52 mg/g, respectively. The influence of coexistence ions on cadmium elimination by BPP/MnFe2O4@ZIF-8 was explored. Shipbuilding wastewater was treated to an acceptable level using the nanocomposite. The Cd adsorption was endothermic and followed the pseudo-second-order (R2 > 0.98). Therefore, BPP/MnFe2O4@ZIF-8 is an affordable material for treating cadmium. [Display omitted] •Biochar of potato peel (BPP) was composited with MnFe2O4 and ZIF-8.•BPP/MnFe2O4@ZIF-8 nanocomposite was used to remove Cd from wastewater samples.•The nanocomposite had a BET and qmax of 174 m2/g and 80 mg/g, respectively.•BPP/MnFe2O4@ZIF-8 was reutilized 8 times for Cd elimination with >90% efficiency.