ناشر تخصصی کنفرانس های ایران

لطفا کمی صبر نمایید

Publisher of Iranian Journals and Conference Proceedings

Please waite ..
Publisher of Iranian Journals and Conference Proceedings
Login |Register |Help |عضویت کتابخانه ها
Paper
Title

Sonolytic, sonocatalytic and sonophotocatalytic degradation of carboxymethyl cellulose (CMC): kinetic and mechanisms

Year: 1399
COI: JR_AJGC-4-3_007
Language: EnglishView: 166
This Paper With 11 Page And PDF Format Ready To Download

Buy and Download

با استفاده از پرداخت اینترنتی بسیار سریع و ساده می توانید اصل این Paper را که دارای 11 صفحه است به صورت فایل PDF در اختیار داشته باشید.
آدرس ایمیل خود را در کادر زیر وارد نمایید:

Authors

Mojgan Sabzehzari - Department of Chemistry, School of Science, Jundi Shapur University of Technology-Dezful
Sàdi Fattahimogadam - National Organisation of Standard Iran, Ilam, Iran

Abstract:

In this research, enzymatic degradation of carboxymethyl cellulose (CMC) with different concentration of substrate was studied using stable available parameters of Michaelis-Menton and calculated maximum reaction rate Vmax. We also used effective approaches such as ultrasonic, sonocatalytic and sonophotocatalytic irradiation in the presence of TiO2 nanoparticles as pretreatment. Degradation of the cellulose by means of ultrasound irradiation and its combination with heterogeneous (TiO2) was investigated. The emphasis was on evaluating theeffect of additives on degradation rate constants. Ultrasound irradiation (24 kHz) was provided by a sonicator, while an ultraviolet source of 16 W was used for UV irradiation. The extent of sonolytic degradation increased when ultrasound power (in the range 1560 W) increased, and the presence of TiO2 did not have significant effect on degradation. We should also note that TiO2 sonophotocatalysis led to complete cellulose degradation in 120 min with increasing the catalyst loading. TiO2 sonophotocatalysis was always faster than the respective individual processes due to the enhanced formation of reactive radicals as well as the possible ultrasound-induced increase of the active surface area of the catalyst. Their efficacy on enhancement of reactivity was discussed based on the kinetic parameters including, Michaelis constant Km, maximum reaction rate Vmax and initial reaction rate, correlating with ultrasonic conditions. Also, values of Km and Vmax were calculated in the absence and presence of ultrasonic and sonophoto waves.

Keywords:

Paper COI Code

This Paper COI Code is JR_AJGC-4-3_007. Also You can use the following address to link to this article. This link is permanent and is used as an article registration confirmation in the Civilica reference:

https://civilica.com/doc/1032154/

How to Cite to This Paper:

If you want to refer to this Paper in your research work, you can simply use the following phrase in the resources section:
Sabzehzari, Mojgan and Fattahimogadam, Sàdi,1399,Sonolytic, sonocatalytic and sonophotocatalytic degradation of carboxymethyl cellulose (CMC): kinetic and mechanisms,https://civilica.com/doc/1032154

مراجع و منابع این Paper:

لیست زیر مراجع و منابع استفاده شده در این Paper 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 Paper لینک شده اند :

  • . Bajpai A.K., Shrivastava J. Polym Int., 2005, 54:1524 ...
  • . Lv D., Xu M., Liu X., Zhan Z., Li ...
  • . Sutarlie L., Yang K.L. J. Coll. Interface Sci., 2013, ...
  • . Kim M.N., Lee A.R., Yoon J.S., Chin I.J. Eur. ...
  • . Rutkowski P. Fuel Proc. Technol., 2011, 92:517 ...
  • . Xu Y.X., Hanna M.A. Carbohydr. Polym., 2005, 59:521 ...
  • . Demirgoz D., Elvirs C., Mano J.F., Cunha A.M., Piskin ...
  • . Galbe M., Zacchi G. Biofuels., 2007, 41:65 ...
  • . Himmel M.E., Ding S.Y., Johnson D.K., Adney W.S., Nimlos ...
  • . Kumar P., Barrett D.M., Delwiche M.J., Stroeve P. Ind. ...
  • . Zhang Y.H., Lynd L.R. Biotechnol. Bioeng., 2004, 88:797 ...
  • . Benedict C.V., Cook W.J., Jarrett P., Cameron J.A., Huang ...
  • . Lavenson D.M., Tozzi E.J., Karuna N., Jeoh T., Powell ...
  • . Xiao C., Yang M. Polym, 2006,64:37 ...
  • . Vaezifar S., Faghihian H., Kamali M. Iran J. Chem. ...
  • . Tavasoli A., Irani M., Nakhaeipour A., Mortazavi Y., Khodadadi ...
  • . Imhoff M.L., Bounoua L., Rickett T., Loucks C., Harriss ...
  • Research Info Management

    Certificate | Report | من نویسنده این مقاله هستم

    اطلاعات استنادی این Paper را به نرم افزارهای مدیریت اطلاعات علمی و استنادی ارسال نمایید و در تحقیقات خود از آن استفاده نمایید.

    Share this page

    More information about COI

    COI stands for "CIVILICA Object Identifier". COI is the unique code assigned to articles of Iranian conferences and journals when indexing on the CIVILICA citation database.

    The COI is the national code of documents indexed in CIVILICA and is a unique and permanent code. it can always be cited and tracked and assumed as registration confirmation ID.

    Support