Removel of copper (II)‎ from wastewater using modified carbon nanotubes

مقدم أطروحة جامعية

Jafar, Iyad Dari

مشرف أطروحة جامعية

Abd al-Razzaq, Adnan A.
Ibrahim, Muhammad

الجامعة

الجامعة التكنولوجية

الكلية

-

القسم الأكاديمي

قسم الهندسة الكيمياوية

دولة الجامعة

العراق

الدرجة العلمية

ماجستير

تاريخ الدرجة العلمية

2012

الملخص الإنجليزي

Carbon materials are a class of significant and widely used engineering adsorbent.

As a new member of the carbon family, carbon nanotubes (CNTs) have exhibited great potentials in applications.In the present work, carbon nanotubes were prepared by Chemical Vapor Deposition (CVD) method, Acetylene gas was used as a carbon source.

In CVD system, a catalytic growth of CNTs is carried out by decomposition of Acetylene ( C2H2 ) at a temperature of 750 0C for one hour ,Argon is used as an oxidation protection gas.

The carbon nanotubes produced are purified to remove impurities such as metal catalyst and then functionalized by treating with HNO3.

Scanning Electron Microscopy (SEM), FT-IR spectra and BET for Surface Area measurement technique were used for characterization of CNTs.

CNTs with about 30 nm in diameter and with length of several microns were obtained.

The surface area of CNTs was 53 m2/ gm.

FTIR spectrum of CNTs exhibited stretching and bending vibration absorption peaks of carboxylic group at the range between 1500 to 1700 cm-1 while C-C bond corresponding to CNTs is clearly shown at 1554.63 cm-1.

The effects of initial concentration of metal (ppm) , pH , carbon nanotube (CNT) dosage (mg/L) and contact time (min) on the adsorption of Cu+2 ion were studied.The results show that the pH of aqueous solution is one of the major parameters that control the adsorption of ion at the solid-water interfaces.

Maximum removal percentage of Cu+2 species is achieved at pH 8 , CNT dosage of 50 mg/L and initial concentration of 50 mg/L and it is 98.39%.The constants of Langmuir and Freudlich models are obtained from fitting the adsorption equilibrium data.

The correlation coefficients of Langmuir and Freudlich models are 0.75 and 1, respectively, indicating that the Freudlich model is more appropriate to describe the adsorption characteristics of Cu+2 onto CNTs.

التخصصات الرئيسية

العلوم الهندسية والتكنولوجية (متداخلة التخصصات)

الموضوعات

• الكربون
• المياه

• APA
• MLA
• AMA

لغة النص

الإنجليزية

نوع البيانات

رسائل جامعية

رقم السجل

BIM-418898