Comparative study of the uptake of phosphate ion by natural Jordanian bentonite with bentonite modified with cetyltrimethylammonium bromide from wastewater

Dissertant

al-Mutayri, Musa

Thesis advisor

Bakr, Hutaf Mustafa

Comitee Members

al-Mumani, Idris Falih
Abu Dalw, Muna
al-Saduni, Haytham H.

University

Al albayt University

Faculty

Faculty of Sciences

Department

Department of Chemistry

University Country

Jordan

Degree

Master

Degree Date

2010

English Abstract

In this study, the removal of phosphate ion from aqueous solutions whether it is synthetic or real samples by calcinated bentonite compared with CTMA-Bent was investigated.

The percent of removal of phosphate ion by calcinated bentonite at different variables (initial concentration, calcinations, temperature particle size, pH values, adsorbent dosage and contact time) was investigated.

The effect of concentration of synthetic samples was in range (lO-lOOppm) (66.71-83.57 %) the percent of removal increased by increasing concentration.

The pH values studied from (2-10) the percent of removal increased by increasing the pH values of (59.79-65.91 %).

The effect of the particle size from (<38->125|j.m) the percent of removal was decreased by increasing particle size (63.9- 61.8 %).The effect of temperature was studied in the range of (25-65°C) the percent of removal was increased by increasing the temperature (66.89-75.84 %) which indicate the process is an endothermic one.

The effect of time shows that at first 5 min the percent was high (26.23 %), then goes slowly until reach to equilibrium (65.32 %).

Effect of calcinations studied from (100-900°C) the results show that the percent of removal increased from (100-900) (9.7-65.2 %).

The effect of adsorbent dosage was studied in the range of (0.5-2.5g) the percent of removal was increased by increasing the adsorbent dosage (34.97-90.94 %).The CTMA-Bent has the same behavior effect but in highest percentage about ~ 30 %, but has the reverse effect when increase the initial concentration.

Kinetic studies were investigated by using pseudo first-order, pseudo second-order rates and diffusion models the R values showed that the pseudo-second- order equation was the most appropriate model for the description of phosphate transport.

Both particle diffusion (Dp) and film diffusion (Df) coefficients were found in the range of for different variables like (temperature, particle size, agitation, pH values).

These results were obtained for synthetic phosphate solution and wastewater from the king talal dam, result indicated that the rate determine step is film diffusion Df.

Due to their low cost, high uptake capacity and selectivity, the Jordanian clay bentonite has the potential to be utilities for cost effective removal of phosphate from wastewater.

Main Subjects

Chemistry

Topics

• Sanitation
• Waste water
• Jordan

No. of Pages

259

Table of Contents

• APA
• MLA
• AMA

Language

English

Data Type

Arab Theses

Record ID

BIM-321357