Potential Impact Of Andrassy Bentonite Microbial Diversity In The Long-Term Performance Of A Deep Nuclear Waste Repository

Copper and steel canning and bentonite buffer are normally forseen as the primary containment component of a deep nuclear waste repository. Distribution of microbes in subsurface environments have been found to be extensive and directly or indirectly may exert influence on waste canister corrosion a...

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Main Authors:	Mohd Yuhyi, Mohd Tadza, Muhammad Afiq, Mohd Tadza, Bag, Ramakrishna, Noor Sheena Herayani, Harith
Format:	Conference or Workshop Item
Language:	English
Published:	2017
Subjects:	T Technology (General) TD Environmental technology. Sanitary engineering
Online Access:	http://umpir.ump.edu.my/id/eprint/18893/ http://umpir.ump.edu.my/id/eprint/18893/1/WINCONF2017-ABSTRACT-MOHD%20YUHYI.pdf

id	ump-18893
recordtype	eprints
spelling	ump-188932017-11-06T04:23:17Z http://umpir.ump.edu.my/id/eprint/18893/ Potential Impact Of Andrassy Bentonite Microbial Diversity In The Long-Term Performance Of A Deep Nuclear Waste Repository Mohd Yuhyi, Mohd Tadza Muhammad Afiq, Mohd Tadza Bag, Ramakrishna Noor Sheena Herayani, Harith T Technology (General) TD Environmental technology. Sanitary engineering Copper and steel canning and bentonite buffer are normally forseen as the primary containment component of a deep nuclear waste repository. Distribution of microbes in subsurface environments have been found to be extensive and directly or indirectly may exert influence on waste canister corrosion and the mobility of radionuclides. The understanding of clays and microbial interaction with radionuclides will be useful in predicting the microbial impacts on the performance of the waste repositories. The present work characterizes the culture-dependent microbial diversity of Andrassy bentonite recovered from Tawau clay deposits. The evaluation of microbial populations shows the presence of a high number of cultivable microbes (e.g. Staphylococcus, Micrococcus, Achromobacter, Bacillus, Paecilomyces, Trichoderma, and Fusarium). Additionally, a pigmented yeast strain Rhodotorula mucilaginosa was also recovered from the formation. Both Bacillus and Rhodotorula mucilaginosa have high tolerance towards U radiation and toxicity. The presence of Rhodotorula mucilaginosa in Andrassy bentonite might be able to change the speciation of radionuclides (e.g. uranium) in a future deep repository. However concern over the presence of Fe (III) reduction microbes such as Bacillus also found in the formation could lead to corrosion of copper steel canister and affect the overall performance of the containment system. 2017 Conference or Workshop Item PeerReviewed application/pdf en http://umpir.ump.edu.my/id/eprint/18893/1/WINCONF2017-ABSTRACT-MOHD%20YUHYI.pdf Mohd Yuhyi, Mohd Tadza and Muhammad Afiq, Mohd Tadza and Bag, Ramakrishna and Noor Sheena Herayani, Harith (2017) Potential Impact Of Andrassy Bentonite Microbial Diversity In The Long-Term Performance Of A Deep Nuclear Waste Repository. In: Annual Women in Nuclear (WiN) Malaysia Conference, 28-29 September 2017 , Selangor, Malaysia. . (Unpublished)
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
language	English
topic	T Technology (General) TD Environmental technology. Sanitary engineering
spellingShingle	T Technology (General) TD Environmental technology. Sanitary engineering Mohd Yuhyi, Mohd Tadza Muhammad Afiq, Mohd Tadza Bag, Ramakrishna Noor Sheena Herayani, Harith Potential Impact Of Andrassy Bentonite Microbial Diversity In The Long-Term Performance Of A Deep Nuclear Waste Repository
description	Copper and steel canning and bentonite buffer are normally forseen as the primary containment component of a deep nuclear waste repository. Distribution of microbes in subsurface environments have been found to be extensive and directly or indirectly may exert influence on waste canister corrosion and the mobility of radionuclides. The understanding of clays and microbial interaction with radionuclides will be useful in predicting the microbial impacts on the performance of the waste repositories. The present work characterizes the culture-dependent microbial diversity of Andrassy bentonite recovered from Tawau clay deposits. The evaluation of microbial populations shows the presence of a high number of cultivable microbes (e.g. Staphylococcus, Micrococcus, Achromobacter, Bacillus, Paecilomyces, Trichoderma, and Fusarium). Additionally, a pigmented yeast strain Rhodotorula mucilaginosa was also recovered from the formation. Both Bacillus and Rhodotorula mucilaginosa have high tolerance towards U radiation and toxicity. The presence of Rhodotorula mucilaginosa in Andrassy bentonite might be able to change the speciation of radionuclides (e.g. uranium) in a future deep repository. However concern over the presence of Fe (III) reduction microbes such as Bacillus also found in the formation could lead to corrosion of copper steel canister and affect the overall performance of the containment system.
format	Conference or Workshop Item
author	Mohd Yuhyi, Mohd Tadza Muhammad Afiq, Mohd Tadza Bag, Ramakrishna Noor Sheena Herayani, Harith
author_facet	Mohd Yuhyi, Mohd Tadza Muhammad Afiq, Mohd Tadza Bag, Ramakrishna Noor Sheena Herayani, Harith
author_sort	Mohd Yuhyi, Mohd Tadza
title	Potential Impact Of Andrassy Bentonite Microbial Diversity In The Long-Term Performance Of A Deep Nuclear Waste Repository
title_short	Potential Impact Of Andrassy Bentonite Microbial Diversity In The Long-Term Performance Of A Deep Nuclear Waste Repository
title_full	Potential Impact Of Andrassy Bentonite Microbial Diversity In The Long-Term Performance Of A Deep Nuclear Waste Repository
title_fullStr	Potential Impact Of Andrassy Bentonite Microbial Diversity In The Long-Term Performance Of A Deep Nuclear Waste Repository
title_full_unstemmed	Potential Impact Of Andrassy Bentonite Microbial Diversity In The Long-Term Performance Of A Deep Nuclear Waste Repository
title_sort	potential impact of andrassy bentonite microbial diversity in the long-term performance of a deep nuclear waste repository
publishDate	2017
url	http://umpir.ump.edu.my/id/eprint/18893/ http://umpir.ump.edu.my/id/eprint/18893/1/WINCONF2017-ABSTRACT-MOHD%20YUHYI.pdf
first_indexed	2023-09-18T22:26:59Z
last_indexed	2023-09-18T22:26:59Z
_version_	1777416032075382784

Potential Impact Of Andrassy Bentonite Microbial Diversity In The Long-Term Performance Of A Deep Nuclear Waste Repository

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