Biosorption of nickel by Halobacillus sp. KN57 isolated from the Miankaleh Wetland, Iran
Heavy metals are generally discharged from untreated wastewater in the aquatic ecosystem. This study was aimed to investigating the effective parameters in the sorption of nickel metal by a native halophile bacterium isolated from sediments of the Miankaleh Wetland in the north of Iran. Halobacillus...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
University of Tehran
2019-10-01
|
| Series: | International Journal of Aquatic Biology |
| Subjects: | |
| Online Access: | http://ij-aquaticbiology.com/index.php/ijab/article/view/704 |
| _version_ | 1818310050122301440 |
|---|---|
| author | Fatemeh Kardel Nafiseh Torabi |
| author_facet | Fatemeh Kardel Nafiseh Torabi |
| author_sort | Fatemeh Kardel |
| collection | DOAJ |
| description | Heavy metals are generally discharged from untreated wastewater in the aquatic ecosystem. This study was aimed to investigating the effective parameters in the sorption of nickel metal by a native halophile bacterium isolated from sediments of the Miankaleh Wetland in the north of Iran. Halobacillus sp. KN57 as the most resistant Gram-positive strain was selected and identified by phenotypic and phylogenetic properties (16S rRNA). The optimum contact time, pH, temperature, salinity, and initial biosorbent concentration of nickel for this strain were 100 min, 7, 30°C, 10%, 1 g.L-1, and 150 mg.L-1, respectively. The nickel biosorption was 111.11 mg/g by the selected strain under the laboratory conditions, followed Langmuir isotherm with a correlation coefficient of more than 0.98 and the maximum single layer sorption. In addition, the kinetics of nickel biosorption of this strain correspond to a pseudo second order kinetic model with a correlation coefficient of more than 0.99. Scanning electron microscopy was applied to confirm the biosorption of Ni2+ by Halobacillus sp. KN57. Finally, the FT-IR spectrum identified that the amide, carbonyl, and amine functional groups were participated in binding to nickel ions. The results showed that the native bacterial strain (Halobacillus sp. KN57) isolated from Miankaleh Wetland, is potentially a promising biosorbent for sorption of nickel metal. |
| first_indexed | 2024-12-13T07:39:54Z |
| format | Article |
| id | doaj.art-8a9e0ba4460c4fac979f6472e319c1fd |
| institution | Directory Open Access Journal |
| issn | 2383-0956 2322-5270 |
| language | English |
| last_indexed | 2024-12-13T07:39:54Z |
| publishDate | 2019-10-01 |
| publisher | University of Tehran |
| record_format | Article |
| series | International Journal of Aquatic Biology |
| spelling | doaj.art-8a9e0ba4460c4fac979f6472e319c1fd2022-12-21T23:54:59ZengUniversity of TehranInternational Journal of Aquatic Biology2383-09562322-52702019-10-017528029010.22034/ijab.v7i5.704326Biosorption of nickel by Halobacillus sp. KN57 isolated from the Miankaleh Wetland, IranFatemeh Kardel0Nafiseh Torabi1Department of Marine Biology, Faculty of Marine Science, University of Mazandaran, Babolsar, Mazandaran, Iran.Department of Environmental Sciences, Faculty of Sciences, University of Mazandaran, Babolsar, Mazandaran, Iran.Heavy metals are generally discharged from untreated wastewater in the aquatic ecosystem. This study was aimed to investigating the effective parameters in the sorption of nickel metal by a native halophile bacterium isolated from sediments of the Miankaleh Wetland in the north of Iran. Halobacillus sp. KN57 as the most resistant Gram-positive strain was selected and identified by phenotypic and phylogenetic properties (16S rRNA). The optimum contact time, pH, temperature, salinity, and initial biosorbent concentration of nickel for this strain were 100 min, 7, 30°C, 10%, 1 g.L-1, and 150 mg.L-1, respectively. The nickel biosorption was 111.11 mg/g by the selected strain under the laboratory conditions, followed Langmuir isotherm with a correlation coefficient of more than 0.98 and the maximum single layer sorption. In addition, the kinetics of nickel biosorption of this strain correspond to a pseudo second order kinetic model with a correlation coefficient of more than 0.99. Scanning electron microscopy was applied to confirm the biosorption of Ni2+ by Halobacillus sp. KN57. Finally, the FT-IR spectrum identified that the amide, carbonyl, and amine functional groups were participated in binding to nickel ions. The results showed that the native bacterial strain (Halobacillus sp. KN57) isolated from Miankaleh Wetland, is potentially a promising biosorbent for sorption of nickel metal.http://ij-aquaticbiology.com/index.php/ijab/article/view/704biosorption, heavy metal, wetland, kinetic, isotherm. |
| spellingShingle | Fatemeh Kardel Nafiseh Torabi Biosorption of nickel by Halobacillus sp. KN57 isolated from the Miankaleh Wetland, Iran International Journal of Aquatic Biology biosorption, heavy metal, wetland, kinetic, isotherm. |
| title | Biosorption of nickel by Halobacillus sp. KN57 isolated from the Miankaleh Wetland, Iran |
| title_full | Biosorption of nickel by Halobacillus sp. KN57 isolated from the Miankaleh Wetland, Iran |
| title_fullStr | Biosorption of nickel by Halobacillus sp. KN57 isolated from the Miankaleh Wetland, Iran |
| title_full_unstemmed | Biosorption of nickel by Halobacillus sp. KN57 isolated from the Miankaleh Wetland, Iran |
| title_short | Biosorption of nickel by Halobacillus sp. KN57 isolated from the Miankaleh Wetland, Iran |
| title_sort | biosorption of nickel by halobacillus sp kn57 isolated from the miankaleh wetland iran |
| topic | biosorption, heavy metal, wetland, kinetic, isotherm. |
| url | http://ij-aquaticbiology.com/index.php/ijab/article/view/704 |
| work_keys_str_mv | AT fatemehkardel biosorptionofnickelbyhalobacillusspkn57isolatedfromthemiankalehwetlandiran AT nafisehtorabi biosorptionofnickelbyhalobacillusspkn57isolatedfromthemiankalehwetlandiran |