adsorption of 1-chloro-4-nitrobenzene from aqueous solutions onto single-walled carbon nanotubes

نویسندگان

s. nazari

m.sc. student, department of chemistry, ahar branch, islamic azad university, ahar, iran. p. gharbani

department of chemistry, ahar branch, islamic azad university, ahar, iran.

چکیده

in this study adsorption of 1-chloro-4-nitrobenzene on single walled carbon nanotubes has been investigated.  the effect of contact time, ph, initial concentration of 1-chloro-4-nitrobenzene, adsorbent dosage and temperature on its adsorption has been carried out in order to find optimum adsorption conditions. adsorption isotherms and related constants were also determined. results showed that contact time to reach equilibrium was 60 min at 25°c and after that a little change of 1-chloro-4-nitrobenzene removal efficiency was observed. the results show that maximum 1-chloro-4-nitrobenzene removal (81.9 %) obtained at ph of 6 and it decreased at higher initial 1-chloro-4-nitrobenzene concentration, lower adsorbent doses and lower temperature. langmuir, freundlich and temkin isotherm models were used to test the equilibrium data. adsorption test results revealed that 1-chloro-4-nitrobenzene adsorption on the studied adsorbents could be better described by freundlich isotherm.

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Adsorption of 1-chloro-4-nitrobenzene from aqueous solutions onto single-walled carbon nanotubes

In this study adsorption of 1-chloro-4-nitrobenzene on single walled carbon nanotubes has been investigated.  The effect of contact time, pH, initial concentration of 1-chloro-4-nitrobenzene, adsorbent dosage and temperature on its adsorption has been carried out in order to find optimum adsorption conditions. Adsorption isotherms and related constants were also determined. Results showed that ...

متن کامل

Adsorption of 1-chloro-4-nitrobenzene from aqueous solutions onto single-walled carbon nanotubes

In this study adsorption of 1-chloro-4-nitrobenzene on single walled carbon nanotubes has been investigated.  The effect of contact time, pH, initial concentration of 1-chloro-4-nitrobenzene, adsorbent dosage and temperature on its adsorption has been carried out in order to find optimum adsorption conditions. Adsorption isotherms and related constants were also determined. Results showed that ...

متن کامل

The Study of Adsorption Characteristics of 1-Chloro-4-Nitrobenzene onto Multi-Walled Carbon Nanotubes Surfaces from Aqueous Solution: Equilibrium and Kinetics

In this study adsorption of 1-chloro-4-nitrobenzene (CNB) from aqueous solutions onto multi-walled carbon nanotubes (MWCNTs) was surveyed. The effect of some key parameters such as pH (2-10), carbon nanotubes dosage (0.02-0.1 mg/250mL), CNB concentration (2- 16 mg/L), and temperature (20,30,40,50°C) were investigated. The results showed that, the variation of initial pH and CNB concentration ex...

متن کامل

The Study of Adsorption Characteristics of 1-Chloro-4-Nitrobenzene onto Multi-Walled Carbon Nanotubes Surfaces from Aqueous Solution: Equilibrium and Kinetics

In this study adsorption of 1-chloro-4-nitrobenzene (CNB) from aqueous solutions onto multi-walled carbon nanotubes (MWCNTs) was surveyed. The effect of some key parameters such as pH (2-10), carbon nanotubes dosage (0.02-0.1 mg/250mL), CNB concentration (2- 16 mg/L), and temperature (20,30,40,50°C) were investigated. The results showed that, the variation of initial pH and CNB concentration ex...

متن کامل

the study of adsorption characteristics of 1-chloro-4-nitrobenzene onto multi-walled carbon nanotubes surfaces from aqueous solution: equilibrium and kinetics

in this study adsorption of 1-chloro-4-nitrobenzene (cnb) from aqueous solutions onto multi-walled carbon nanotubes (mwcnts) was surveyed. the effect of some key parameters such as ph (2-10), carbon nanotubes dosage (0.02-0.1 mg/250ml), cnb concentration (2- 16 mg/l), and temperature (20,30,40,50°c) were investigated. the results showed that, the variation of initial ph and cnb concentration ex...

متن کامل

Adsorption of tetracycline from aqueous solutions onto multi-walled carbon nanotubes with different oxygen contents

Oxidized multi-walled carbon nanotubes (MWCNTs) with different oxygen contents were investigated for the adsorption of tetracycline (TC) from aqueous solutions. As the surface oxygen content of the MWCNTs increased, the maximum adsorption capacity and adsorption coefficient of TC increased to the largest values and then decreased. The relation can be attributed to the interplay between the nano...

متن کامل

منابع من

با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید


عنوان ژورنال:
international journal of nano dimension

جلد ۳، شماره ۴، صفحات ۲۶۳-۲۶۹

کلمات کلیدی
[ ' a d s o r p t i o n ' , 1 , ' c h l o r o ' , 4 , ' n i t r o b e n z e n e ' , ' s i n g l e w a l l e d c a r b o n n a n o t u b e ' , ' i s o t h e r m s ' ]

میزبانی شده توسط پلتفرم ابری doprax.com

copyright © 2015-2023