بررسي حذف تتراسايكلين از آبهاي آلوده با استفاده از ازن زني كاتاليستي

Removal of Tetracycline Antibiotic from Contaminated Water for Using Catalytic Ozonation Process

زﻣﯿﻨﻪ و ﻫﺪف: آﻧﺘﯽﺑﯿﻮﺗﯿﮏ ﻫﺎ ﺷـﺎﻣﻞ ﻣﻘﺪاري ﻋﻤﺪه از ﺗﺮﮐﯿﺒﺎت داروﯾﯽ ﻫﺴـﺘﻨﺪ ﮐﻪ ﺑﺮاي درﻣﺎن اﻧﺴـﺎﻧﯽ و داﻣﭙﺰﺷـﮑ ﯽ اﺳـﺘﻔﺎده ﻣﯽﺷـﻮﻧﺪ. آﻟﻮدﮔﯽ ﺑﻪ آﻧﺘﯽﺑﯿﻮﺗﯿﮏ ﻫﺎ در ﺧﺎك، آبﻫﺎي ﺳـﻄﺤﯽ، آبﻫﺎي زﯾﺮزﻣﯿﻨﯽ و ﺣﺘﯽ آب آﺷـﺎﻣﯿﺪﻧﯽ دﯾﺪه ﺷـﺪه اﺳـﺖ. روشﻫﺎي اﮐﺴـﯿﺪاﺳـﯿﻮن ﭘﯿﺸـﺮﻓﺘﻪ ﻣﺎﻧﻨﺪ ازنزﻧﯽ ﮐﺎﺗﺎﻟﯿﺴـﺘﯽ در ﺣﺬف آﻧﺘﯽﺑﯿﻮﺗﯿﮏ ﻫﺎ از آب و ﻓﺎﺿـﻼب ﻣﺆﺛﺮ ﻫﺴـﺘﻨﺪ. ﻫﺪف از اﯾﻦ ﻣﻄﺎﻟﻌﻪ ﺑﺮرﺳـﯽ ﮐﺎراﯾﯽ ﻓﺮاﯾﻨﺪ ازنزﻧﯽ ﮐﺎﺗﺎﻟﯿﺴـﺘﯽ در ﺣﺬف آﻧﺘﯽﺑﯿﻮﺗﯿﮏ ﺗﺘﺮاﺳـﺎﯾﮑﻠﯿﻦ از آبﻫﺎي آﻟﻮده اﺳﺖ. ﻣﻮاد و روش ﻫﺎ: در ا ﯾﻦ ﻃﺮح، از ﭘﺎﯾﻠﻮت ازنزﻧﯽ ﺑﻪ ﺣﺠﻢcc 200 اﺳﺘﻔﺎده ﮔﺮدﯾ ﺪ. در ﻫﺮ آزﻣﺎﯾﺶ ﻣﺤﻠﻮل ﺗﺘﺮاﺳﺎﯾ ﮑﻠﯿﻦ در ﻏﻠﻈﺖ ﻣﻮردﻧﻈﺮ درون ﭘﺎﯾﻠﻮت رﯾﺨﺘﻪ ﺷﺪ. pH ﻧﻤﻮﻧﻪ ﺑﺎ اﺳ ﯿﺪﮐﻠﺮﯾﺪرﯾﮏ و ﺳﻮد ﺗﻨﻈﯿﻢ ﺷﺪ و در زﻣﺎنﻫﺎي ﻣﺨﺘﻠﻒ 2 ﺗﺎ 30 دﻗﯿﻘﻪ وPH ﻫﺎي ﻣﺘﻔﺎوت 2ﺗﺎ 10 ﻋﻤﻞ ازن زﻧﯽ در دوزmg/min 0 /8اﻧﺠﺎم ﮔﺮﻓﺖ. ﺳﭙﺲ در ﻫﻤﯿﻦ ﺷﺮاﯾﻂ، ﻋﻤﻞ ازن زﻧﯽ در ﺣﻀﻮر ﮐﺎﺗﺎﻟﯿﺴﺖ ﮐﺮﺑﻦ ﻓﻌﺎل ﻧﯿﺰ اﻧﺠﺎم و ﻧﻤﻮﻧﻪ از ﭘﺎﯾ ﻠﻮت ﺗﺨﻠﯿﻪ و ﺑﺮاي ﺗﻌﯿﯿﻦ ﺗﺘﺮاﺳﺎﯾ ﮑﻠﯿﻦ ﺑﺎﻗ ﯿﻤﺎﻧﺪه آﻧﺎﻟﯿﺰ ﮔﺮدﯾﺪ. ﯾﺎﻓﺘـﻪﻫﺎ: ﻧﺘـﺎﯾﺞ ﻧﺸـــﺎن داد ﮐﻪ در ﺷـــﺮاﯾﻂ ﺑﻬﯿﻨـﻪ pHﻣﻌـﺎدل 8 و دوز ازن 0/8 ﻣﯿﻠﯽﮔﺮم در دﻗﯿﻘـﻪ و زﻣﺎن ﺗﻤـﺎس 30 دﻗﯿﻘﻪ ازنزﻧﯽ ﺗﻨﻬﺎ ﺗﻮاﻧﺴـﺖ 59 درﺻـﺪ ﺗﺘﺮاﺳـﺎﯾﮑﻠﯿﻦ را ﺣﺬف ﮐﻨﺪ و در ﻫﻤﯿﻦ ﺷﺮاﯾﻂ ازنزﻧﯽ ﮐﺎﺗﺎﻟﯿﺴﺘﯽ ﺑﺎ ﻣﯿﺰان0/01 ﮔﺮم در ﻟﯿﺘﺮ ﮐﺮﺑﻦ ﺣﺎﺻﻞ از درﺧﺖ اﺳﮑﻨﺒﯿﻞ ﺗﻮاﻧﺴﺖ 100 درﺻﺪ ﺗﺘﺮاﺳﺎﯾﮑﻠﯿﻦ را ﺣﺬف ﻧﻤﺎﯾﺪ. ﻧﺘﯿﺠﻪﮔﯿﺮي: ﻧﺘﺎﯾﺞ ﭘﮋوﻫﺶ ﻧﺸﺎن داد ﮐﻪ ازن زﻧﯽ ﮐﺎﺗﺎﻟﯿﺴﺘﯽ ﺑﺎ ﮐﺮﺑﻦ ﺣﺎﺻﻞ از ﺿﺎﯾﻌﺎت ﭼﻮب اﺳﮑﻨﺒﯿﻞ ﻣﯽﺗﻮاﻧﺪ ﺑﻪ ﻋﻨﻮان روش ﺗﺼﻔﯿﻪ ﭘﯿﺸﺮﻓﺘﻪ اﺳﺘﻔﺎده ﮔﺮدد.

Antibiotics, comprising a significant amount of pharmaceutical compounds, are used as human and veterinary treatments. These antibiotics come to appear as contamination soil, surface water, groundwater, and even drinking water. Advanced oxidation processes such as catalytic ozonation are effective to remove the antibiotics form water and wastewater. The aim of this study was to investigate the efficiency of Catalytic Ozonation Process for tetracycline antibiotics removal from contaminated waters. Materials and Methods: In this design, an ozonation pilot with a volume of 200 cc was used. In each experiment, the tetracycline solution was poured into the desired concentration, the pH of the sample was adjusted with sulfuric acid and NaOH. At different times of 5 to 30 minutes and different PHs of 2 to 10 ozonation was performed at the dose of 0.8 mg/min. Then, under these conditions, ozonation was performed in the presence of activated carbon catalyst and a sample was discharged from the pilot and analyzed (HPLC) to determine the remaining tetracycline. Results: The results showed that under optimum conditions of pH= 8 and ozone dose of 0.8 mg / min and contact time of 30 minutes ozonation only eliminated 59% of tetracycline and in the same conditions catalytic ozonation with 0.01 g/L carbon. The Calligonum comosum tree was able to remove 100% tetracycline in 30 minutes. Conclusion: The results of this study showed that carbon catalyzed ozonation from wood Calligonum comosum waste can be used as an advanced treatment method