E-ISSN 2090-0503 | ISSN 1687-7497
 
2023, Vol: 19, Issue: 2
19 / 2Current Issue Online FirstArchiveAims and ScopeAbstracting & IndexingMost Accessed ArticlesMost Downloaded ArticlesMost Cited Articles

Original Research 


HEAVY METAL BINDING CAPACITY OF EXOPOLYSACCHARIDES PRODUCED BY ANABAENA VARIABILIS AND NOSTOC MUSCORUM

Amal H. El-Naggar Hanan H. Omar Mohamed E. H. Osman Gehan A. Ismail.

Abstract
This paper represents the heavy metal adsorptive potential of exopolysaccharides (EPS) produced by two cyanobacteria Anabaena variabilis and Nostoc muscorum. The results indicated that 30 mg dry wt. of cyanobacterial EPS was optimal for biosorption of tested heavy metals. The adsorption capacity of tested EPS decreased as initial metal concentration increased. The EPS of the two organisms adsorbed the metal ions with nearly similar efficiency. The maximum removal for Cu2+ (86 and 88%), Cd2+ (78 and 82%), Zn2+ (55 and 49%) and Ni2+ (48 and 44%) were observed at 200 ppm metal concentration with 30 mg dry wt. EPS of A. variables and N. muscorum, respectively. However, Co2+ recorded the maximum uptake (68 and 71%) at 400 ppm with 30 mg dry wt. of the EPS of A. variabilis and N. muscorum, respectively. The minimum metal removal was observed at 1000 ppm of Zn2+ (6 and 10%), Ni2+ (12 and 17%) and Co2+ (23 and 17 %) by 30 mg dry wt. EPS of A. variabilis and N. muscorum, respectively. The affinity of the two cyanobacterial EPS to metal binding was in the order: Cu2+ > Cd2+ > Co2+ > Zn2+ > Ni2+. The present study indicated that the cyanobacterial EPS are promising for the removal of toxic heavy metals from polluted water.

Key words: Exopolysaccharides, heavy metals, A. variabilis, N. muscorum.


 
ARTICLE TOOLS
Abstract
PDF Fulltext
How to cite this articleHow to cite this article
Citation Tools
Related Records
 Articles by Amal H. El-Naggar Hanan H. Omar Mohamed E. H. Osman Gehan A. Ismail
on Google
on Google Scholar

How to Cite this Article
Pubmed Style

Amal H. El-Naggar Hanan H. Omar Mohamed E. H. Osman Gehan A. Ismail. HEAVY METAL BINDING CAPACITY OF EXOPOLYSACCHARIDES PRODUCED BY ANABAENA VARIABILIS AND NOSTOC MUSCORUM . Egypt. J. Exp. Biol. (Bot.). 2008; 4(0): 47-52.

Web Style

Amal H. El-Naggar Hanan H. Omar Mohamed E. H. Osman Gehan A. Ismail. HEAVY METAL BINDING CAPACITY OF EXOPOLYSACCHARIDES PRODUCED BY ANABAENA VARIABILIS AND NOSTOC MUSCORUM . https://www.egyseb.net//?mno=186753 [Access: December 05, 2023].

AMA (American Medical Association) Style

Amal H. El-Naggar Hanan H. Omar Mohamed E. H. Osman Gehan A. Ismail. HEAVY METAL BINDING CAPACITY OF EXOPOLYSACCHARIDES PRODUCED BY ANABAENA VARIABILIS AND NOSTOC MUSCORUM . Egypt. J. Exp. Biol. (Bot.). 2008; 4(0): 47-52.


Vancouver/ICMJE Style

Amal H. El-Naggar Hanan H. Omar Mohamed E. H. Osman Gehan A. Ismail. HEAVY METAL BINDING CAPACITY OF EXOPOLYSACCHARIDES PRODUCED BY ANABAENA VARIABILIS AND NOSTOC MUSCORUM . Egypt. J. Exp. Biol. (Bot.). (2008), [cited December 05, 2023]; 4(0): 47-52.


Harvard Style

Amal H. El-Naggar Hanan H. Omar Mohamed E. H. Osman Gehan A. Ismail (2008) HEAVY METAL BINDING CAPACITY OF EXOPOLYSACCHARIDES PRODUCED BY ANABAENA VARIABILIS AND NOSTOC MUSCORUM . Egypt. J. Exp. Biol. (Bot.), 4 (0), 47-52.


Turabian Style

Amal H. El-Naggar Hanan H. Omar Mohamed E. H. Osman Gehan A. Ismail. 2008. HEAVY METAL BINDING CAPACITY OF EXOPOLYSACCHARIDES PRODUCED BY ANABAENA VARIABILIS AND NOSTOC MUSCORUM . THE EGYPTIAN JOURNAL OF EXPERIMENTAL BIOLOGY (Botany), 4 (0), 47-52.


Chicago Style

Amal H. El-Naggar Hanan H. Omar Mohamed E. H. Osman Gehan A. Ismail. "HEAVY METAL BINDING CAPACITY OF EXOPOLYSACCHARIDES PRODUCED BY ANABAENA VARIABILIS AND NOSTOC MUSCORUM ." THE EGYPTIAN JOURNAL OF EXPERIMENTAL BIOLOGY (Botany) 4 (2008), 47-52.


MLA (The Modern Language Association) Style

Amal H. El-Naggar Hanan H. Omar Mohamed E. H. Osman Gehan A. Ismail. "HEAVY METAL BINDING CAPACITY OF EXOPOLYSACCHARIDES PRODUCED BY ANABAENA VARIABILIS AND NOSTOC MUSCORUM ." THE EGYPTIAN JOURNAL OF EXPERIMENTAL BIOLOGY (Botany) 4.0 (2008), 47-52. Print.


APA (American Psychological Association) Style

Amal H. El-Naggar Hanan H. Omar Mohamed E. H. Osman Gehan A. Ismail (2008) HEAVY METAL BINDING CAPACITY OF EXOPOLYSACCHARIDES PRODUCED BY ANABAENA VARIABILIS AND NOSTOC MUSCORUM . THE EGYPTIAN JOURNAL OF EXPERIMENTAL BIOLOGY (Botany), 4 (0), 47-52.


Author LoginReviewer LoginAbout PublisherEditorial PoliciesEditorial Review PolicyPeer Review PolicyEditorial & Peer Review ProcessPublication Ethics and Publication Malpractice StatementConflict of Interest PolicyPlagiarism PolicyProtection of Research Participants (Statement On Human And Animal Rights)Privacy PolicySelf-Archiving PoliciesTerms of UseLicense Information

About THE EGYPTIAN JOURNAL OF EXPERIMENTAL BIOLOGY (Botany)

The Egyptian Journal of Experimental Biology (Botany) publishes original scientific research concerning botanical sciences (Morphology, Taxonomy, Gen ... Read more.



For best results, please use Internet Explorer or Google Chrome.

Contact Information

egysebbz@gmail.com