تخریب رنگ نساجی اسید قرمز 361 با استفاده از ازون تولید شده روی سطح الکترود تیتانیم اصلاح شده با اکسیدهای فلزی و نانو لوله‌های کربنی

در ﭘﮋوﻫﺶ ﺣﺎﺿﺮ رﻧﮕﺰای ﻧﺴﺎﺟﯽ اﺳﯿﺪ ﻗﺮﻣﺰ 361 ﺑﺎ ﺳﺎﺧﺘﺎر آزو ﺑﻪ روش اﻟﮑﺘﺮوﺷﯿﻤﯿﺎﯾﯽ ﺑﺎ آﻧﺪ ﺗﯿﺘﺎﻧﯿﻢ اﺻﻼح ﺷﺪه ﺑﺎ ﻗﻠﻊ اﮐﺴﯿﺪ دوپ ﺷﺪه ﺑﺎ آﻧﺘﯿﻤﻮان، ﻧﯿﮑﻞ و ﻧﺎﻧﻮﻟﻪﻫﺎی ﮐﺮﺑﻨﯽ ﺣﺬف ﺷﺪ. ﺳﻄﺢ اﻟﮑﺘﺮود ﺗﯿﺘﺎﻧﯿﻮم ﺑﻪ روش ﻻﯾﻪ ﻧﺸﺎﻧﯽ ﭼﺮﺧﺸﯽ و ﭘﯿﺮوﻟﯿﺰ ﺣﺮارﺗﯽ اﺻﻼح ﮔﺮدﯾﺪ. از ﺗﮑﻨﯿﮏ اﻟﮑﺘﺮوﺷﯿﻤﯿﺎﯾﯽ وﻟﺘﺎﻣﺘﺮی ﭼﺮﺧﻪای ﺟﻬﺖ ﻣﻘﺎﯾﺴﻪ ﺟﺮﯾﺎن آﻧﺪی و ﭘﺘﺎﻧﺴﯿﻞ آﻏﺎز واﮐﻨﺶ اﮐﺴﺎﯾﺶ آب اﺳﺘﻔﺎده ﺷﺪ. ﺑﻪ ﻣﻨﻈﻮر ﺗﺎﯾﯿﺪ ﺗﻮﻟﯿﺪ ازون از ﺗﮑﻨﯿﮏ uv - vis اﺳﺘﻔﺎده ﮔﺮدﯾﺪ. ﺗﻮﻟﯿﺪ ازون در ﻣﺤﻠﻮل اﻟﮑﺘﺮوﻟﯿﺖ ﻓﺴﻔﺮﯾﮏ اﺳﯿﺪ 0.1mﺑﺎ اﻋﻤﺎل ﺟﺮﯾﺎن ﺛﺎﺑﺖ 12/8ma در ﻣﺪت زﻣﺎن 25 دﻗﯿﻘﻪ اﻧﺠﺎم ﺷﺪ.ﻏﻠﻈﺖ ازون ﭘﺲ از اﯾﻦ ﻣﺪت اﻟﮑﺘﺮوﻟﯿﺰ ﺑﺮاﺑﺮ 13 ﻣﯿﻠﯽ ﮔﺮم ﺑﺮ ﻟﯿﺘﺮ ﻣﯿﺒﺎﺷﺪ. ﺳﭙﺲ ﺣﺬف رﻧﮓ از ﻣﺤﻠﻮل ﺣﺎوی ﻣﺎده رﻧﮕﺰای ﻧﺴﺎﺟﯽ اﺳﯿﺪ ﻗﺮﻣﺰ 361 ﺑﺎ اﻟﮑﺘﺮود ﺗﯿﺘﺎﻧﯿﻢ اﺻﻼح ﺷﺪه اﻧﺠﺎم ﺷﺪ. ﭘﺎراﻣﺘﺮﻫﺎﯾﯽ ﻧﻈﯿﺮ ﻏﻠﻈﺖ اوﻟﯿﻪ رﻧﮓ، زﻣﺎن، ph و ﺳﯿﻨﺘﯿﮏ ﺗﺨﺮﯾﺐ ﻣﺎده رﻧﮕﺰا ﻣﻮرد ﺑﺮرﺳﯽ ﻗﺮار ﮔﺮﻓﺖ. ﻣﺎده رﻧﮕﺰای اﺳﯿﺪ ﻗﺮﻣﺰ 361 ﺑﺎ ﻏﻠﻈﺖ اوﻟﯿﻪ 100mg l^-1با ph باربر 11 / 6در طی مدت زمان 30 دقیقه الکترولیز با اعمال چگالی جریان ثابت 2 -^ ma 20cm با راندمان 99 % حذف گردید.

Removal of textile dye of red acid 361 using ozone produced at modified titanium electrode with metal oxide and multi walled carbon nanotubes

AbstractOne of the most challenges in the textile dyeing industry is produced toxic and contaminated effluents, which must remove these toxic compounds from wastewaters before discharging them into the sewerage. One of the best methods for removing these toxic maters is to use oxidant material such as ozone. Recently, electrochemical ozone generation has been considered a simple, inexpensive and effective process. In this research the removal of C. I acid red 361 with azo structure as a widely used in the carpet industry, remove it from effluent less attention, were removed by an electrochemical method with titanium modified with tin oxide doped with antimony, Nickel and carbon nanotubes. The surface of the titanium electrode was coated with a mixture of salts (tin, antimony and nickel) and carbon nanotubes by spincoating and pyrolysis method. The cyclic voltammetry technique was used to compare the anodic current and the initiation potential of water splitting on the bare and modified electrodes. The UVVis technique was used to confirm ozone production on bare and modified electrodes. Removal of C. I acid red 361 from dye solution was performed with the modified electrode at a constant current density of 20 mA cm2 at different times. Parameters such as initial dye concentration, contact time, pH and dye degradation kinetics were investigated. The results showed that the removal of C. I acid red 361 from the solution increased with increasing contact time with ozone so that during 30 minutes electrolysis of dye degradation was performed with an initial concentration of 100 ppm with 99% efficiency.