Exopolymeric substances production by Bacillus cereus KMS3-1 enhanced its biosorption efficiency in removing Cd(2+)and Pb2+ in single and binary metal mixtures

doi:10.1016/j.envres.2023.115917

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	Exopolymeric substances production by Bacillus cereus KMS3-1 enhanced its biosorption efficiency in removing Cd(2+)and Pb2+ in single and binary metal mixtures
	Mathivanan, Krishnamurthy 2; Chandirika, Jayaraman Uthaya 4; Srinivasan, Rajendran 3; Charles, Partheeban Emmanuel 1; Rajaram, Rajendran 1; Zhang, Ruiyong 2
刊名	ENVIRONMENTAL RESEARCH
	2023-07-01
卷号	228 页码:10
关键词	Bacteria Growth EPS production Biosorption efficiency Single and binary metal mixtures Functional groups
ISSN号	0013-9351
DOI	10.1016/j.envres.2023.115917
通讯作者	Mathivanan, Krishnamurthy(kritamathi@gmail.com) ; Zhang, Ruiyong(ruiyong.zhang@qdio.ac.cn)
英文摘要	The present study investigated the growth, exopolymeric substance (EPS) production, and biosorption efficiency of strain Bacillus cereus KMS3-1 in the Cd2+ and Pb2+ ions containing single and binary metal-treated broth (50 mg/L). In addition, the interaction of the KMS3-1 strain with Cd2+ and Pb2+ ions in single and binary metal-treated broths was investigated using SEM-EDS, FTIR, and XRD analyses. The results showed that the bio-sorption efficiency (%) and EPS production of KMS3-1 biomass in both single and binary metal-treated broths had increased with increasing incubation time and were higher for Pb2+ ions than for Cd2+ ions. In the single and binary metal-treated broths, the maximum biosorption efficiency of KMS3-1 for Pb2+ ions were 70.8% and 46.3%, respectively, while for Cd2+ ions, they were 29.3% and 16.8%, respectively, after 72 h. Moreover, the biosorption efficiency of strain KMS3-1 for both metal ions was dependent on its EPS production and peaked at the maximum EPS production. The copious EPS production by KMS3-1 was observed in metal-treated media (50 mg/L), in the following order: Pb2+ ions (1925.7 mu g/mL) > binary metal mixtures (1286.8 mu g/mL) > Cd2+ ions (1185.5 mu g/mL), > control (1099 mu g/mL) after 72 h of incubation. This result indicates that the metal biosorption efficiency of the KMS3-1 strain was enhanced by the increased EPS production in the surrounding metal-treated broth. SEM-EDS and FTIR characterization studies revealed that the KMS3-1 biomass effectively adsorbed Cd2+ and Pb2+ ions from the medium by interacting with their surface functional groups (hydroxyl, carbonyl, carboxyl, amide, and phosphate). Moreover, the biosorbed Cd2+ and Pb2+ ions were transformed into CdS and PbS, respectively, by the KMS3-1 biomass. This study suggests that the Bacillus cereus KMS3-1 strain may be a promising candidate for the treatment of metal contamination.
资助项目	Post-doctoral research plan at the Institute of Oceanology, Chinese Academy of Sciences, China[329010]
WOS关键词	HEAVY-METALS ; BACTERIA ; CADMIUM ; LEAD ; RESISTANT ; EXOPOLYSACCHARIDE ; TOXICITY ; DETOXIFICATION ; URANIUM ; CR(VI)
WOS研究方向	Environmental Sciences & Ecology ; Public, Environmental & Occupational Health
语种	英语
出版者	ACADEMIC PRESS INC ELSEVIER SCIENCE
WOS记录号	WOS:000990654400001
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/182987]
专题	中国科学院海洋研究所
通讯作者	Mathivanan, Krishnamurthy; Zhang, Ruiyong
作者单位	1.Bharathidasan Univ, Dept Marine Sci, Tiruchirappalli 620024, Tamil Nadu, India 2.Chinese Acad Sci, Inst Oceanol, 7 Nanhai Rd, Qingdao 266071, Peoples R China 3.Alagappa Univ, Sch Marine Sci, Dept Fisheries Sci, Karaikkudi 630003, Tamil Nadu, India 4.Manonmaniam Sundaranar Univ, Sri Paramakalyani Ctr Excellence Environm Sci, Environm Nanotechnol Div, Alwarkurichi 627412, Tamil Nadu, India
推荐引用方式 GB/T 7714	Mathivanan, Krishnamurthy,Chandirika, Jayaraman Uthaya,Srinivasan, Rajendran,et al. Exopolymeric substances production by Bacillus cereus KMS3-1 enhanced its biosorption efficiency in removing Cd(2+)and Pb2+ in single and binary metal mixtures[J]. ENVIRONMENTAL RESEARCH,2023,228:10.
APA	Mathivanan, Krishnamurthy,Chandirika, Jayaraman Uthaya,Srinivasan, Rajendran,Charles, Partheeban Emmanuel,Rajaram, Rajendran,&Zhang, Ruiyong.(2023).Exopolymeric substances production by Bacillus cereus KMS3-1 enhanced its biosorption efficiency in removing Cd(2+)and Pb2+ in single and binary metal mixtures.ENVIRONMENTAL RESEARCH,228,10.
MLA	Mathivanan, Krishnamurthy,et al."Exopolymeric substances production by Bacillus cereus KMS3-1 enhanced its biosorption efficiency in removing Cd(2+)and Pb2+ in single and binary metal mixtures".ENVIRONMENTAL RESEARCH 228(2023):10.