Application of Sonocatalyst and Sonophotocatalyst for Degradation of Acid Red 14 in Aqueous Environment
Journal Title: Archives of Hygiene Sciences - Year 2016, Vol 5, Issue 4
Abstract
Background & Aims of the Study: Azo dyes are employed in industrial processes such as textile industry to create large quantities of colored sewages that have organic and non-organic materials. So, remediation of them is essential. In this project, degradation and mineralization of Acid red 14 (AR14) that is a mono Azo dye and widely used in the textile industries was investigated by Sonocatalysis and Sono photo catalyst in the presence of homogeneous (Fe3+) photo catalyst. Materials & Methods: This study is an experimental investigation on a laboratory scale. The study performed on synthetic wastewater that hold Acid red 14.The influence of operational parameters such as initial dye concentration and ultrasonic power on the sonochemical degradation was also studied. The optimization of variables was done by one factor at a time method. Results: The efficiency of the Sonophotocatalytic process with Fe3+ was higher than Sonocatalysis and photo catalyst processes alone. The combination of sonolysis, Fe3+ and photo catalyst caused a highly synergistic effect and the synergy index obtained for Fe3+ Sono photo catalysis was 2.05. Chemical oxygen demand (COD) analysis was used to study the degree of mineralization. After 180 min of reaction, the removal of COD was 15, 25.4 and 55.5% for UV/Fe3+, US/Fe3+ and UV/US/Fe3+ process, respectively. The degradation by photocatalysis and sonolysis followed pseudo first-order with respect to the concentration of AR14. Conclusions: The results showed that the Sono photo catalytic degradation and mineralization of AR14 in the presence of Fe3+ was synergistic, most likely because of the participation of Sono-Fenton and photo-Fenton reactions.
Authors and Affiliations
Aref Shokri
Keywords
Related Articles
- EP ID EP469967
- DOI -
- Views 128
- Downloads 0
Prevalence and Predictors of Overweight and Obesity of Adolescents
Background: Adolescent overweight and obesity are a worldwide public health problem plays an important role in their health. This study was conducted on to determine the prevalence and predictors of adolescent overweight...
Performance of Extended Aeration Biological System in Removal of Organic Matter from Razi Hospital Wastewater during 2015, Iran
Background & Aims of the Study: The most important compounds in hospital wastewater are antibiotics, disinfectants, anesthetics, radioactive elements, static cytotoxic agents, other chemicals and hazardous materials that...
Electrocoagulation Process for Treatment of Detergent and Phosphate
Background & Aims of the Study: Detergent and phosphate are one of the main and vital threats (eutrophication phenomenon and production of synthetic foam) for the source of drinking water, agriculture and industrial uses...
Assessment of Safety Condition in One of the Teaching Hospitals in Kermanshah (2015): A Case Study
Background & Aims of the Study: Many working conditions-related stress factors that can produce injuries and illnesses are important in hospital environments. So, the health and safety of nurses and patients from workpla...
A review of biogas production methods from wastes and sewage and the explanation of its process
Thousands of tons of urban solid waste and human and animal waste in cities and villages of Iran have endangered the health of the environment and increased the greenhouse gases. On the other hand, the increasing trend o...