期刊
DESALINATION AND WATER TREATMENT
卷 57, 期 27, 页码 12496-12507出版社
DESALINATION PUBL
DOI: 10.1080/19443994.2015.1054312
关键词
Zinc oxide; Precipitation; Hydrothermal; Photodegradation; Phenol
Derivatives of phenol are considered as part of the persistent organic pollutants with endocrine effects persist in the environment and resist to bio-degradation which is difficult to be degraded. The objective of this study was to investigate the solar-photocatalytic degradation of phenol with synthesized ZnO through precipitation (ZnO-P) and hydrothermal (ZnO-H) method as photocatalysts. ZnO-P is capable to achieve total degradation of phenol up to 30mg/l of initial phenol concentration and 20mg/l for ZnO-H within 6h of reaction time. The degradation of ZnO-P and ZnO-H is favored in acidic condition (pH 3) and followed by natural condition (pH 6). The results obtained fitted well with Langmuir-Hinshelwood kinetic model. The apparent rate constant is proportional to the efficiency of the photocatalysts. Chemical oxygen demand results attested the complete degradation of phenol concentration and possibility for mineralization.
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