نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشجو/ علوم پزشکی مشهد

2 مشهد،خیابان دانشگاه،دانشکده بهداشت دانشگاه علوم پزشکی مشهد

3 دانشجوی دکتری تخصصی بهداشت محیط دانشگاه علوم پزشکی تهران و عضو هیات علمی دانشگاه علوم پزشکی مشهد

4 مشهد- خیابان دانشگاه- دانشگاه 18- دانشکده بهداشت- گروه مهندسی بهداشت محیط

5 دانشجو / علوم پزشکی مشهد

6 دانشجو/ دانشگاه علوم پزشکی مشهد

چکیده

زمینه و هدف: از میان انواع مختلف آنتی بیوتیک ها، تتراسایکلین ها دومین گروه شایع آنتی بیوتیک ها از نظر تولید و مصرف در سراسر جهان هستند که ورود آنها به فاضلاب خانگی می تواند منجر به آلودگی منابع آب شود. هدف از انجام این مطالعه تعیین کارایی فرایند US/UV/H2O2 در حذف آنتی بیوتیک تتراسایکلین از محلول های آبی می باشد.
مواد و روش کار: پژوهش حاضر یک مطالعه تجربی بوده که با استفاده از حمام اولتراسونیک و در حضور اشعه ماوراء بنفش و پراکسید هیدروژن انجام گرفته است. به منظور سنجش تاثیر متغیرهای زمان تماس(60-5 دقیقه)، غلظت اولیه آنتی بیوتیک ( mg/l25-5)، pH(10-3)، پراکسید هیدروژن(mg/l20-5) و توان ورودی(300-90 وات) بر فرایند، از راکتور در فواصل زمانی مشخص نمونه برداری و غلظت باقی مانده توسط دستگاه اسپکتروفتومتر در طول موج 261 نانومتر قرائت گردید.
یافته ها: نتایج این مطالعه نشان داد که UV و اولتراسونیک در بهترین شرایط به ترتیب 16% و 32% در حذف این آلاینده دارند. با به کارگیری همزمان US/UV/H2O2، کارایی حذف آنتی بیوتیک افزایش یافت و بهترین راندمان در 5/4pH= ، غلظت اولیه آنتی بیوتیک mg/l 10، غلظت پراکسید هیدروژن mg/l20 و توان ورودی 240 وات حاصل شد. در این شرایط بعد از زمان تماس 50 دقیقه، راندمان حذف 83% برای آنتی بیوتیک تتراسایکلین حاصل گردید.
نتیجه گیری: نتایج این مطالعه نشان داد که می توان از فرایند US/UV/H2O2به عنوان یک فرایند موثر برای حذف آنتی بیوتیک تتراسایکلین از محلول های آبی استفاده نمود.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Performance evaluation of Advanced oxidation process US/UV/H2O2 on Removal of Tetracycline Antibiotic from Aqueous Solutions

نویسندگان [English]

  • mohsen yazdani 1
  • aliasghar najafpoor 2
  • aliakbar dehghan 3
  • hosein alidadi 4
  • mahmood dankoob 5
  • Reyhane Zangi 1
  • masoume saghi 1
  • aliasghar navaei 6

چکیده [English]

Background and objectives: among the different type of antibiotics, the tetracycline occupied the 2end level of the more prevalence types in produce and use aspect worldwide and their existence in domestic wastewater will pollute our water resources. The aim of this study was to determine the performance of US/UV/H2O2 processes when reduction of tetracycline antibiotic from an aqueous environment was objected.
Material and methods: the current experimental study use the ultrasonic bath simultaneously with ultraviolet wave and hydrogen peroxide. To detect the effect of variables include contact time(5-60 min), the antibiotic concentration (5-25 mg/l), pH(3-10), hydrogen peroxide concentration (5-20 mg/l) and the input power (90- 300 W) of instrument in process, the reactor has been sampled in different intervals and the residue concentration to be used to detect with spectrophotometer instrument in 261 nm length wave.
Results: the result have been showed that the separately use of UV and US will not take a high performance with the best removal percent of 16% and 32%. Simultaneously use of US/UV/H2O2 cached a more highly reduction in tetracycline concentration and the best reduction was 83 % removal that took place in pH= 4.5, antibiotic concentration of 10 mg/I, input power of 240 W, hydrogen peroxide concentration of 20 mg/l, time equal with 50 min.
Conclusion: the result have been showed that the US/UV/H2O2 process can be used as a performance process to remove the tetracycline antibiotic from an aqueous environment.

کلیدواژه‌ها [English]

  • ultrasound
  • ultra violet waves
  • hydrogen peroxide
  • antibiotic tetracycline
  • aqueous solutions
[1
 
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