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IJSTR >> Volume 7 - Issue 8, August 2018 Edition



International Journal of Scientific & Technology Research  
International Journal of Scientific & Technology Research

Website: http://www.ijstr.org

ISSN 2277-8616



Photocatalytic Degradation Of Procion Red Synthetic Dye Using ZnO-Zeolite Composites

[Full Text]

 

AUTHOR(S)

Abdis Salam, Tuty Emilia Agustina, Risfidian Mohadi

 

KEYWORDS

photocatalytic, degradation, ZnO-zeolite, composites, procion red.

 

ABSTRACT

Textile industry consumes the most amounts of dye lots in the production process which have a non-biodegradable in nature. It is necessary to do the dye wastewater treatment before discharging to the environment. Photodegradation is a process of decomposition of organic compounds with the aid of photon energy, in which oxidation and reduction reactions occur on the surface of the semiconductor. One of the good semiconductors used is ZnO. Furthermore, adding a matrix or dopants is expected to assist ZnO photocatalysts so that dye degradation is more optimal. Zeolite is a good solid support for dispersing ZnO semiconductors because zeolite has large surface area and uniformity of pore size. Procion Red was used as a model of synthetic dye wastewater. The objectives of the study are to synthesize ZnO-zeolite composites by impregnation method and to study the effects of irradiation time (30-120 minutes), type of composites used, and light conditions (dark room, UV light, and sunlight) on Procion Red degradation. ZnO-zeolite composites are made by weight ratio (1:2), (1:1) and (2:1). ZnO-zeolite composites that have been synthesized were characterized by using SEM-EDX. The degradation of procion red dye produced was characterized by using UV-Vis Spectrophotometer. The results showed that Procion Red degradation by using sunlight exposure was greater than UV lamp and dark room for Procion Red concentration of 150 mg/L. From the three ZnO-zeolite composites synthesized, the composite (2:1) showed the best degradation percentage of 83.96% for 120 minutes under sunlight irradiation.

 

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