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Degradation of scrap tyre by Bacillus sp. - Kinetic aspects of major environmental parameters and identification of potential growth substrates
Lao, Weng Chon1; de Toledo, Renata Alves1; Lu, Qihong1,2; Shim, Hojae1
2019-02
Source PublicationINTERNATIONAL BIODETERIORATION & BIODEGRADATION
ISSN0964-8305
Volume137Pages:95-101
Abstract

This study aimed to elucidate some kinetic aspects involved during the degradation of waste scrap tyre by a Bacillus sp. previously isolated. After a 5-day cultivation, 2.03 +/- 0.22% and 0.005 +/- 0.001% of weight loss were observed for tyre sample and control group, respectively. The potential organic compounds leached out from tyre, identified by GC-MS, mainly consisted of n-alkanes and some alkylated phenols. A mixture of tetradecane, nonadecane, and 2,4-di-tert-butylphenol (60 mg l(-1) total concentration) supported the isolate growth during the 5-day cultivation. The n-alkanes were removed more effectively (tetradecane, 64.93% and nonadecane, 47.92%) than the alkylated phenol (3.03%), contributing to the tyre degradation by Bacillus sp. observed. The optimal conditions were determined as 6.70 mg l(-1) dissolved oxygen concentration, pH 7, 10% (v/v) inoculum size, 30 degrees C, and 120 mm(2) tyre surface area. The highest maximum specific growth rate (mu(max)) (0.06 OD unit d(-1) for S and SI) and the shortest lag phases (0.28 d for S and 0.17 d for SI) were obtained under the optimized conditions for the Bacillus sp. incubation. The electron micrographs showed the isolate ability to colonize the waste tyre surface.

KeywordBacillus Sp. Environmental Factors Growth Substrate N-alkanes Tyre Degradation
DOI10.1016/j.ibiod.2018.11.012
Indexed BySCIE
Language英語English
WOS Research AreaBiotechnology & Applied Microbiology ; Environmental Sciences & Ecology
WOS SubjectBiotechnology & Applied Microbiology ; Environmental Sciences
WOS IDWOS:000458470800011
Scopus ID2-s2.0-85057630113
Fulltext Access
FWCI0.18573147
Citation statistics
Document TypeJournal article
CollectionDEPARTMENT OF CIVIL AND ENVIRONMENTAL ENGINEERING
Corresponding AuthorShim, Hojae
Affiliation1.Univ Macau, Fac Sci & Technol, Dept Civil & Environm Engn, Macau 999078, Peoples R China
2.Sun Yat Sen Univ, Sch Environm Sci & Engn, Guangzhou 510006, Guangdong, Peoples R China
First Author AffilicationUniversity of Macau
Corresponding Author AffilicationUniversity of Macau
Recommended Citation
GB/T 7714
Lao, Weng Chon,de Toledo, Renata Alves,Lu, Qihong,et al. Degradation of scrap tyre by Bacillus sp. - Kinetic aspects of major environmental parameters and identification of potential growth substrates[J]. INTERNATIONAL BIODETERIORATION & BIODEGRADATION,2019,137:95-101.
APA Lao, Weng Chon,de Toledo, Renata Alves,Lu, Qihong,&Shim, Hojae.(2019).Degradation of scrap tyre by Bacillus sp. - Kinetic aspects of major environmental parameters and identification of potential growth substrates.INTERNATIONAL BIODETERIORATION & BIODEGRADATION,137,95-101.
MLA Lao, Weng Chon,et al."Degradation of scrap tyre by Bacillus sp. - Kinetic aspects of major environmental parameters and identification of potential growth substrates".INTERNATIONAL BIODETERIORATION & BIODEGRADATION 137(2019):95-101.
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