Removal of Cr(VI) in Fixed Bed Column Using Tamarisk Sawdust

سال انتشار: 1391
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 1,015

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:

ICECS01_060

تاریخ نمایه سازی: 23 خرداد 1392

چکیده مقاله:

Nowadays, Activated carbon in water purification columns are being used to remove heavy metal from water in south of Iran. The purpose of this research is to investigate Tamarisk Sawdust as a substituting adsorbent for Cr(VI) removal from aqueous solution. Tamarisk is the only tree which can live in Sistan plain and it’s sawdust is abundantly found in factories. Batch sorption was studied to determine optimal pH, equilibrium time, kinetic models parameters and isotherm models parameters. For removal of Cr(VI) in continuous condition a 30 cm bed depth glass column with diameter of 3 cm was used as a fixed bed with gravitational water flow. Operation of the column was investigated under flow of 5, 6.5 and 8 ml/min, bed depth of 10, 12 and 14 cm and Cr(VI) concentration of 6, 8 and 10 mg/l. The results showed that maximum adsorption efficiency for both of the adsorbents occurred in pH=1 and equilibrium time is 180 and 120 min for natural and modified Tamarisk sawdust respectively. Kinetic studies showed that Ho et al. and Lagergren models are more capable for adsorption description using natural and modified Tamarisk sawdust respectively. Isotherm studies showed that Fruendlich model was better for describing adsorption isotherm for both of the adsorbents. The failure time of the column increases with increase in flow rate, initial concentration and bed depth. The adsorption capacity increases with decrease in bed bed depth and increase in flow rate and initial concentration. Evaluation of column parameters showed that BDST model has a good consistency with experimental data.

نویسندگان

Seyed Sajad Seyedayn

Graduate student, Department of Irrigation and Drainage Engineering, University of Zabol, Iran

Shayan Shamohamadi

Associated professor, Department of Irrigation and Drainage Engineering, University of Shahrekord, Iran

Anoosh Sadat Amini Nasab

Department of agriculture and natural resources, Islamic Azad University , Ahwaz, Iran

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 :
  • H, O + چه _ 2HCrO، _ _ _ 2CrO, ...
  • بحران های زیست محیطی و راهکارهای بهبود آن _ 25 ...
  • بحران های زیست محیطی و راهکارهای بهبود آن _ 25 ...
  • بحران های زیست محیطی و راهکارهای بهبود آن _ 25 ...
  • بحران های زیست محیطی و راهکارهای بهبود آن _ 25 ...
  • بحران های زیست محیطی و راهکارهای بهبود آن _ 25 ...
  • بحران های زیست محیطی و راهکارهای بهبود آن _ 25 ...
  • al.(2006) Nameni al.(2008) Attia ...
  • Nuhoglu(2007) Lee et al.(2010) Esmaeili al.(2010) Sharma ...
  • Envi ronmental Crisis and its Solutions 13-14 Feb 2013 Kish ...
  • Envi ronmental Crisis and its Solutions 13-14 Feb 2013 Kish ...
  • Envi ronmental Crisis and its Solutions 13-14 Feb 2013 Kish ...
  • 54 137.91 16050.60 100.43 10407.04 65.12 20696.18 129.49 16050.60 100.43 ...
  • 42 104.83 20638.71 132.56 23550.93 147.35 16754.42 104.83 1 1341.53 ...
  • Envi ronmental Crisis and its Solutions 13-14 Feb 2013 Kish ...
  • Envi ronmental Crisis and its Solutions 13-14 Feb 2013 Kish ...
  • The relation between service time and bed depth in different ...
  • Envi ronmental Crisis and its Solutions 13-14 Feb 2013 Kish ...
  • Al-Anber, Z.A., and M., Abu Dayeh. 2008. Batch adsorption of ...
  • Asadi. F, Shariatmadari H and Mirghaffari. N, of rice hull ...
  • Envi ronmental Crisis and its Solutions 13-14 Feb 2013 Kish ...
  • 65 y=152.5x- 0.911 1 122.4 _ ...
  • Hadi M., Samarghandi M.R., McKay G. 2010. Simplified Fixed Bed ...
  • Hutchin. R.A, (1973), _ simplified design of activated carbon systems, ...
  • Lee, S.M. Kim, W.G. Laldawngliana, C and Tiwari, D. (2010), ...
  • Maji, S.K., Pal, A., Pal, T., Adak, A. (2007). Modeling ...
  • Malkoc. E and Nuhoglu.Y, (2007), "Potential of tea factory waste ...
  • Nameni, M. Alavi Moghadam, M.R and Arami, M. (2008), Adsorption ...
  • Sharma, Y.C. Singh, B. Agrawal, A and Weng, CH. (2008), ...
  • Shukla, S.R., and R.S., Pai. 2005. Adsorption of CU (II), ...
  • Taffrel S. R. and Rubio J 2009. On the removal ...
  • Envi ronmental Crisis and its Solutions 13-14 Feb 2013 Kish ...
  • wastewater", J Hazard Mater, vol 154, pp 451- [4] Attia, ...
  • Baral, S.S., Dasb, N., Ramulub, T.S., Sahoob, S.K. and Roy, ...
  • Basso, M. C., Cerrella, E. G. and Cukierman, A. L. ...
  • Bohart G.S and Adams. E.Q, (1920), :Some Aspects of the ...
  • Deepa, K.K. Sathishkumar, M. Binupriya, A.R. Murugesan, G.S. Swaminathan, K ...
  • Emmanuel I., Bamidele I. Olu-Owolabib, Esther I. Fasuyib, Kayode O. ...
  • Esmaeili, A. Ghasemi, S and Rustaiyan, A. (2010), "Removal of ...
  • Gokhale. S.V, . Jyoti. K.K and Lele. S.S, (2009), "Modeling ...
  • Gupta, S and Babu, B.V, (2006), "dsorption of Cr(VI) by ...
  • Gupta, S and Babu, B.V, (2009), "Modeling, simulation, and experimental ...
  • Gupta, S and Babu, B.V, (2009), Removal of toxic metal ...
  • نمایش کامل مراجع