The Effect of Nitrate as a Radical Scavenger for the Removal of Humic Acid from Aqueous Solutions by Electron Beam Irradiation

سال انتشار: 1391
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 147

فایل این مقاله در 10 صفحه با فرمت PDF قابل دریافت می باشد

استخراج به نرم افزارهای پژوهشی:

لینک ثابت به این مقاله:

شناسه ملی سند علمی:

JR_JCHR-1-3_003

تاریخ نمایه سازی: 27 اردیبهشت 1401

چکیده مقاله:

Introduction: Humic acids have adverse effects on the water quality, then should be removed from water resources. The aim of this study was to evaluate the effect of nitrate as a radical scavenger for removal of humic acid from aqueous solutions by electron beam irradiation. Materials and Methods: In this study, after preparation of stock humic acid solution in alkaline condition, different concentrations of humic acid (۱۰, ۲۵ and ۵۰ mg/l) were prepared. Different concentrations of nitrate (۲۵, ۵۰ and ۱۰۰ mg/l) added to humic acid samples and then absorption of samples was measured at ۲۵۴ nm by using UV-Vis spectrophotometer before and after the electron beam irradiation. This study has done at pH= ۸ and at different electron beam adsorbed dose of ۱, ۳, ۶, ۹ and ۱۵ kGy. Results: The results of this study showed that the increasing of adsorbed dose from ۱ to ۱۵ kGy, the removal efficiency of humic acid also increased. By increasing of nitrate concentration from ۲۵ to ۱۰۰ mg/l, the removal efficiency of humic acid has decreased from ۴۳.۸% to ۳۶.۶% and nitrate acts as a radical scavenger. By increasing of humic acid concentration from ۱۰ to ۵۰mg/l, removal efficiency decreased in all adsorbed doses. Kinetic analysis of our results showed that the results well fitted with the second - order reaction. Conclusion: We can conclude from this study that electron beam irradiation could be a useful process for the treatment of natural organic matter (humic acid) from surface waters.

مراجع و منابع این مقاله:

لیست زیر مراجع و منابع استفاده شده در این مقاله را نمایش می دهد. این مراجع به صورت کاملا ماشینی و بر اساس هوش مصنوعی استخراج شده اند و لذا ممکن است دارای اشکالاتی باشند که به مرور زمان دقت استخراج این محتوا افزایش می یابد. مراجعی که مقالات مربوط به آنها در سیویلیکا نمایه شده و پیدا شده اند، به خود مقاله لینک شده اند :
  • Zazouli MA, Nasseri S, Mahvi AH, et al. Study of ...
  • Mahvi AH, Rezaee R, Safari M. Reduction of humic substances ...
  • Roshani B, Karpel Vel Leitner N. Effect of persulfate on ...
  • Liao CH, Lu MC, Su SH. Role of cupric ions ...
  • Humet Product Documentation and Technical Information: Humifulvate- Anatural active ingredient. ...
  • Weng YH, Li KCh, Chaung-Hsieh LH, et al. Removal of ...
  • Duan J, Wilson F, Graham N, et al. Adsorption of ...
  • Gokce CE, Guneysu S, Aydin S, et al. Comparison of ...
  • Bolto B, Dixon D, Eldridge R, et al. Removal of ...
  • Crozes G, White P, Marshall M. Enhanced coagulation: its effect ...
  • Jacangelo JG, Chellam S, Bonacquisti TP. Treatment of surface water ...
  • Lamsal R, Gagnon GA. Comparison of advanced oxidation processes for ...
  • Munter R. advanced oxidation processes – current status and prospects, ...
  • Drtinova B, Pospisil M, Cuba V. Products of radiation removal ...
  • Behjat A, Mozahheb SA, Khalili MB, et al. Advanced Oxidation ...
  • Dalvand A, Gholami M, Joneidi A, et al. Investigation of ...
  • Abdou LAW, Hakeim OA, Mahmoud MS, et al. Comparative study ...
  • Yu S, Lee B, Lee M, et al. Decomposition and ...
  • Lee B, Lee M. Decomposition of ۲,۴,۶-trinitrotoluene (TNT) by gamma ...
  • Guo Zh, Zheng Zh, Gu Ch, et al. Radiation removals ...
  • Kwon M, Yoon Y, Cho E, et al. Removal of ...
  • Wang GS, Hsieh ST, Hong CS. Destruction of humic acid ...
  • Gehringer P, Eschweiler H. Electron beam dosimetry in aqueous flow ...
  • Paul J, Rawat K, Sarma K, et al. Decoloration and ...
  • Pálfi T, Takács E, Wojnárovits L. Degradation of H-acid and ...
  • Chung B, Cho J, Song C, et al. Degradation of ...
  • Momani FA. Degradation of cyanobacteria anatoxin-a by advanced oxidation processes. ...
  • Miao H, Tao W, Cui F, et al. Kinetic Study ...
  • نمایش کامل مراجع