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Water 2019, 11(2), 310;

Treatment of Aquaculture Wastewater through Chitin/ZnO Composite Photocatalyst

Key Laboratory of Environmental Biotechnology, Xiamen University of Technology, Xiamen 361024, China
Institute for Energy, Environment and Sustainability Research, UR-BNU, 3737 Wascana Parkway, Regina, SK S4S 0A2, Canada
Sino-Canada Resources and Environmental Research Academy, North China Electric Power University, Beijing 102206, China
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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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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