Iranian Research Organization for Science and Technology Advances in Environmental Technology 2476-6674 3 4 2017 10 01 Sonocatalysis degradation of methyl orange using zinc sulfide carbon nanotubes nanocatalyst 243 248 653 10.22104/aet.2018.2766.1135 EN Mohammad Reza Rezaei Kahkha Department of Environmental Health Engineering, Zabol University of Medical Sciences, Zabol, Iran Batool Rezaei Kahkha Department of Occupational Health Engineering, Kerman University of Medical Sciences, Kerman, Iran Ali Faghihi Zarandi Department of Occupational Health Engineering, Kerman University of Medical Sciences, Kerman, Iran Journal Article 2018 02 07 Dye sewage is dangerous problem in our environmental aquatics that cause generation of harmful effects for living organism. In this work, because of simplicity, easy operation, high efficiency and no creating secondary pollutants, ultra sound radiation applied for degradation of a synthetic dye, methyl orange using zinc sulfide nano particles decorated on carbon nanotubes as nanocatalyst. ZnS/CNTs prepared by co-precipitation of carbon nanotubes and zinc aceate. Methyl orange (MO) is a cationic dye that used widely in some medical uses, coloring paper, dyeing cottons, wools, coating for paper stocks and etc. For achieving highest degradation efficiency several parameters such as pH, amount of nanocatalyst, initial dye concentration and time were evaluated and optimized. Results showed that highest degradation efficiency (100%) obtained at 0.3 gr of nanocatalyst while initial dye concentration is 30 mg/L at pH, 2. Comparison of several methods for degradation of methyl orange showed feasibility of applied method.  In addition, reusability of nanocatalyst was suitable for degradation of MO in real wastewater samples. https://aet.irost.ir/article_653_eaae339c4d89fc102edd9dbdb6a28915.pdf