اکثر مکاتبات کومش از طریق ایمیل سایت می باشد. لطفا Spam ایمیل خود را نیز چک نمایید.
   [Home ] [Archive]   [ فارسی ]  
:: ::
Main Menu
Home::
Journal Information::
Articles archive::
For Authors::
Subscription::
Contact us::
Site Facilities::
Webmail::
Editorial Board::
::
Search in website

Advanced Search
..
Receive site information
Enter your Email in the following box to receive the site news and information.
..
:: Volume 19, Issue 4 ( (پياپی 68)، پائیز 1396) ::
Koomesh 1396, 19(4): 749-759 Back to browse issues page
Phenol removal from aqueous solutions by nanoporous MCM-41 silica adsorbent modified with diamine group
Maryam Macky , Mohammad Hasan Ehrampoosh , Mohammad Malakootian
Abstract:   (4336 Views)
Introduction: Phenol and its derivatives are common organic pollutants existing in wastewater of many industries such as oil refineries, coal processing, coking operations, petrochemical, Cementite, resin and plastic manufacturing industries. Correspondingly, Phenol is very toxic for human and environment. In the present study, removal of Phenol from aqueous solution using the mesoporous MCM-41 silica functionalized with diamine group (NH2-MCM-41) was investigated. Materials and Methods: This experimental study was done in samples of synthetic and real wastewater from Kerman Cementite factory within six months. The modification of mesoporous MCM-41 materials by grafting diamine functional groups directly to the surface of a solid adsorbent was studied. The structure of the synthesis materials was characterized by XRD, BET and FT-IR. The chemical quality of crude sample and its Phenol was determined and then the influence of pH, absorbent amount and time on the removal of Phenol was evaluated. Then, the optimal conditions for each of these parameters were determined. The same experiments were done for samples of real wastewater. In order to understand the process of adsorption, kinetics of absorption isotherms equilibrium was also studied. Results: The results showed that increasing the adsorbent dose and contact time led to increasing of the removal efficiency and increasing pH and also the initial phenol concentration led to reducing of removal efficiency. According to the results, the best removal efficiency occurred at acidic pH and adsorption equilibrium time was 45 min. The highest percentage of Phenol adsorption was observed at pH= 6, initial phenol concentration 70 mg/L, adsorbent amount of 10 g/L for synthetic solution with removal efficiency of 73% and for real solution with the efficiency of 71%. The findings revealed that the removal of Phenol followed the freundlich isotherm (R2=98%) and the second order synthetic model (R2=99%). Conclusion: The results showed that the NH2-MCM-41 materials are effective adsorbents for the Phenol removal from industrial wastewater.
Keywords: Adsorption, Phenol, Nanoporous MCM-41Silica, Isotherm, kinetic
Full-Text [PDF 869 kb]   (2418 Downloads)    
Type of Study: Research | Subject: General
Received: 2016/07/23 | Accepted: 2017/06/12 | Published: 2017/10/2
Send email to the article author

Add your comments about this article
Your username or Email:

CAPTCHA


XML   Persian Abstract   Print


Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

Macky M, Ehrampoosh M H, Malakootian M. Phenol removal from aqueous solutions by nanoporous MCM-41 silica adsorbent modified with diamine group. Koomesh 1396; 19 (4) :749-759
URL: http://koomeshjournal.semums.ac.ir/article-1-3445-en.html


Rights and permissions
Creative Commons License This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
Volume 19, Issue 4 ( (پياپی 68)، پائیز 1396) Back to browse issues page
کومش Koomesh
Persian site map - English site map - Created in 0.05 seconds with 38 queries by YEKTAWEB 4657