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HEAVY METALS AND CYANIDE REMOVAL USING PHOTO-CATALYTIC OXIDATION IN GALVANIZATION WORKSHOPS

Article

Last updated: 03 Jan 2025

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Chemistry

Abstract

Industrial wastewater from galvanization workshops located in meet Ghamer city at Dakahlya governorate in Egypt contains high concentrations of copper, chromium, nickel, zinc and cyanide which violating the Egyptian environmental standard. Three commercial TiO2 specimens were tested in this work namely: TiO2 Degussa P25 (80% anatase, 20% rutile), TiO2 Aldrich (100% anatase) and TiO2 Aldrich (100% rutile) and added with 0.3 ml/l hydrogen peroxide. At optimum operating conditions: TiO2 Degussa P25 photo catalyst (0.25 g l-1), 0.3 ml/l H2O2, PH =11 and temp = 298°C and time photolysis of 30 min., The results confirmed that TiO2 Degussa P25 shows the best photo catalytic activity in the removal of cyanides. The removal efficiency reaches 80%. By increasing time and dose of catalyst give no effect in quality of effluent. So, addition of 1 ml/l hydrogen peroxide to the photo catalytic reaction increases the removal efficiency to 99.8%. Also, 80% of (Cr6+), 70% (Ni2+) and 94.5% (Zn2+) metal ions have been photo catalytically removed from cyanide solution.

DOI

10.21608/absb.2010.7345

Keywords

Wastewater, metal galvanization, photo-catalytic oxidation

Authors

First Name

GAMAL AL-DIN

Last Name

ELKADY

MiddleName

-

Affiliation

Department of Chemistry, Faculty of Science Al-Azhar University, Cairo, Egypt

Email

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City

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Orcid

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First Name

MOHAMED

Last Name

SARAYA

MiddleName

E.

Affiliation

Department of Chemistry, Faculty of Science Al-Azhar University, Cairo, Egypt

Email

-

City

-

Orcid

-

First Name

RIFAAT

Last Name

ABDEL WAHAAB

MiddleName

-

Affiliation

Nathional Research Center, Cairo, Egypt

Email

-

City

-

Orcid

-

First Name

ABDEL-GHANY

Last Name

SOLIMAN

MiddleName

A.

Affiliation

department of Chemistry, Faculty of Science, Al-Azhar University, Cairo, Egypt

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-

City

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Orcid

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Volume

21

Article Issue

Issue 1-A

Related Issue

1398

Issue Date

2010-06-01

Receive Date

2010-01-03

Publish Date

2010-06-01

Page Start

199

Page End

208

Print ISSN

1110-2535

Online ISSN

2636-3305

Article File

ABSB_Volume 21_Issue Issue 1-A_Pages 199-208.pdf

PDF . 470.3kB

Link

https://absb.journals.ekb.eg/article_7345.html

Detail API

https://absb.journals.ekb.eg/service?article_code=7345

Order

14

Type

Original Article

Type Code

520

Publication Type

Journal

Publication Title

Al-Azhar Bulletin of Science

Publication Link

https://absb.journals.ekb.eg/

MainTitle

HEAVY METALS AND CYANIDE REMOVAL USING PHOTO-CATALYTIC OXIDATION IN GALVANIZATION WORKSHOPS

Details

Type

Article

Created At

22 Jan 2023