Cadmium removal and 2,4-dichlorophenol degradation by immobilized Phanerochaete chrysosporium loaded with nitrogen-doped TiO2 nanoparticles

Applied Microbiology and Biotechnology
Guiqiu ChenJianmin He

Abstract

Phanerochaete chrysosporium has been identified as an effective bioremediation agent for its biosorption and degradation ability. However, the applications of P. chrysosporium are limited owing to its long degradation time and low resistance to pollutants. In this research, nitrogen-doped TiO2 nanoparticles were loaded on P. chrysosporium to improve the remediation capacity for pollutants. The removal efficiencies were maintained at a high level: 84.2% for Cd(II) and 78.9% for 2,4-dichlorophenol (2,4-DCP) in the wide pH range of 4.0 to 7.0 in 60 h. The removal capacity of immobilized P. chrysosporium loaded with nitrogen-doped TiO2 nanoparticles (PTNs) was strongly affected by the initial Cd(II) and 2,4-DCP concentrations. The hyphae of PTNs became tight, and a large amount of crystals adhered to them after the reaction. Fourier transform infrared spectroscopy showed that carboxyl, amino, and hydroxyl groups on the surface of PTNs were responsible for the biosorption. In the degradation process, 2,4-DCP was broken down into o-chlorotoluene and 4-hexene-1-ol. These results showed that PTNs is promising for simultaneous removal of Cd(II) and 2,4-DCP from wastewater.

References

May 18, 2001·Biochemical Engineering Journal·K -M. Khoo, Y -P. Ting
Jan 3, 2006·Journal of Hazardous Materials·Gui-Qiu ChenWen Jiang
Apr 8, 2006·Journal of Hazardous Materials·Quanfang LuJinzhang Gao
Apr 21, 2007·Chemosphere·O GimenoM Carbajo
Mar 4, 2008·Bioresource Technology·Guiqiu ChenGuoli Shen
Mar 10, 2010·Journal of Hazardous Materials·Yasemin BakirciogluSuleyman Akman
Jun 24, 2010·ACS Applied Materials & Interfaces·Dawid WodkaIzumi Kumakiri

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Citations

Oct 8, 2013·The Science of the Total Environment·Wang-Wang TangBin-Bin Huang
Apr 18, 2020·Critical Reviews in Biotechnology·Ellen C GieseKelly J Dussán
Feb 9, 2021·Bulletin of Environmental Contamination and Toxicology·Jingliang LiuShengtian Zhang

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