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16714

Bioaccumulation of heavy metals by Vibrio alginolyticus isolated from wastes of Iron and Steal Factory, Helwan, Egypt

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Last updated: 03 Jan 2025

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Abstract

The isolation of bacteria resistant to heavy metals is a topic of interest in the field bioremediation of contaminated water, soil and sediments. We report here the isolation of bacteria that is resistant to high concentration of a mixture of heavy metals namely cadmium, cupper, lead and zinc. The bacterial isolate was obtained from a site receiving heavy metal waste from the iron and steal factory; a major factory located in El-tebeen, south Helwan. The isolate was identified as Vibrio alginolyticus using the API system. The maximum tolerable concentration was 2.5 mM, 4 mM, 2.5 mM and 3.5 mM for cadmium, copper, lead and zinc respectively. Transmission electron micrograph of Vibrio alginolyticus grown in nutrient broth containing a mixture of the four tested heavy metals, showed bioaccumulation of heavy metal(s) on the bacterial cell wall. At the same time, there was an over all reduction in the concentration of heavy metals in culture supernatant; the percentage reduction was 20% for cadmium, 31% for cupper 40% for lead and 45%for zinc. The reduction occurred after 4 hrs incubation at 30°C for all metals, cupper, lead, and zinc  while cadmium required  24 hrs incubation were required to achieve maximum reduction. This isolate could be used to accelerate the in situ bioremediation of sites contaminated by loads of mixed metals.

DOI

10.21608/eajbsg.2009.16714

Keywords

Heavy metals, Helwan, Egypt

Authors

First Name

Hoda

Last Name

El-Hendawy

MiddleName

H.

Affiliation

Botany Department, Helwan University

Email

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City

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Orcid

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First Name

Dena

Last Name

Ali

MiddleName

A.

Affiliation

Microbiology Department, Ain Shams University

Email

-

City

-

Orcid

-

First Name

Enas

Last Name

El-Shatoury

MiddleName

H.

Affiliation

Microbiology Department, Ain Shams University

Email

-

City

-

Orcid

-

First Name

Samah

Last Name

Ghanem

MiddleName

M.

Affiliation

Botany Department, Helwan University

Email

-

City

-

Orcid

-

Volume

1

Article Issue

1

Related Issue

3546

Issue Date

2009-12-01

Receive Date

2018-10-15

Publish Date

2009-12-01

Page Start

23

Page End

28

Print ISSN

2090-0872

Online ISSN

2090-0880

Link

https://eajbsg.journals.ekb.eg/article_16714.html

Detail API

https://eajbsg.journals.ekb.eg/service?article_code=16714

Order

3

Type

Original Article

Type Code

689

Publication Type

Journal

Publication Title

Egyptian Academic Journal of Biological Sciences, G. Microbiology

Publication Link

https://eajbsg.journals.ekb.eg/

MainTitle

Bioaccumulation of heavy metals by Vibrio alginolyticus isolated from wastes of Iron and Steal Factory, Helwan, Egypt

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Article

Created At

22 Jan 2023