Remediation of Sulfidic Wastewater by Aeration in the Presence of Ultrasonic Vibration

F Ahmad,N Ahmad,I Alenezi,A Z Al-Khazaal

doi:10.48084/etasr.1956

Abstract

In the current study, the aerial oxidation of sodium sulfide in the presence of ultrasonic vibration is investigated. Sulfide analysis was carried out by the methylene blue method. Sodium sulfide is oxidized to elemental sulfur in the presence of ultrasonic vibration. The influence of air flow rate, initial sodium sulfide concentration and ultrasonic vibration intensity on the oxidation of sodium sulfide was investigated. The rate law equation regarding the oxidation of sulfide was determined from the experimental data. The order of reaction with respect to sulfide and oxygen was found to be 0.36 and 0.67 respectively. The overall reaction followed nearly first order kinetics.

Highlights

Different processes are followed for the removal of sulfides, including wet scrubbing, liquid redox technology, biofiltration, scavengers, carbon adsorption, iron salts, biocide process, anthraquinone and use of oxidizing agents [1,2,3,4]
The aerial oxidation of sodium sulfide was investigated at different air flow rates, different initial sodium sulfide concentration and different ultrasonic vibration intensities
Sodium sulfide is removed from synthetic wastewater by aeration in the presence of ultrasonic vibration

Summary

Introduction

Different processes are followed for the removal of sulfides, including wet scrubbing, liquid redox technology, biofiltration, scavengers, carbon adsorption, iron salts, biocide process, anthraquinone and use of oxidizing agents [1,2,3,4]. Ahmad et al.: Remediation of Sulfidic Wastewater by Aeration in the Presence of Ultrasonic Vibration removing the elemental sulfur formed during the oxidation process. RESULTS AND DISCUSSION The aerial oxidation of sodium sulfide was investigated at different air flow rates, different initial sodium sulfide concentration and different ultrasonic vibration intensities.

Results

Conclusion