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Water 2019, 11(2), 310; https://doi.org/10.3390/w11020310

Treatment of Aquaculture Wastewater through Chitin/ZnO Composite Photocatalyst

1
Key Laboratory of Environmental Biotechnology, Xiamen University of Technology, Xiamen 361024, China
2
Institute for Energy, Environment and Sustainability Research, UR-BNU, 3737 Wascana Parkway, Regina, SK S4S 0A2, Canada
3
Sino-Canada Resources and Environmental Research Academy, North China Electric Power University, Beijing 102206, China
4
School of Engineering, University of Guelph, Guelph, ON N1G 2W1, Canada
*
Author to whom correspondence should be addressed.
Received: 21 September 2018 / Revised: 15 January 2019 / Accepted: 31 January 2019 / Published: 12 February 2019
(This article belongs to the Section Water and Wastewater Treatment)
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Abstract

This paper proposed a newly explored composite photocatalyst, Chitin/ZnO, prepared via the sol-gel method for exploring its photocatalytic activity in the simulated aquaculture wastewater under UV irradiation. The study mainly involves the application of Chitin/ZnO from three aspects: the structure, the principle and the degradation efficiency. The effects of purification operation factors including mass ratio rate, dosage, calcination temperature, initial NH4+–N concentration and illumination conditions on the NH4+–N removal effectiveness were investigated. Optimum conditions were explored through orthogonal experiments, which revealed that 88.73% NH4+–N removal from 60 mg/L synthetic wastewater was achieved by direct illumination for 120 min. Additionally, Chitin/ZnO photocatalysts (mass ratio of 2:3) at a calcination temperature of 500 °C were favorable for Chitin loaded over a ZnO lattice. The obtained nanoparticles of Chitin/ZnO were characterized using SEM and X-ray diffraction. The purpose of this paper is to grope for an economical and easy method of Chitin/ZnO powder preparation and to provide a practical approach for future research on the photocatalytic purification of aquaculture wastewater. View Full-Text
Keywords: chitin/ZnO; simulated aquaculture wastewater; photocatalytic oxidation chitin/ZnO; simulated aquaculture wastewater; photocatalytic oxidation
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Lin, X.; Yang, A.; Huang, G.; Zhou, X.; Zhai, Y.; Chen, X.; McBean, E. Treatment of Aquaculture Wastewater through Chitin/ZnO Composite Photocatalyst. Water 2019, 11, 310.

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