کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6977462 | 1453825 | 2018 | 37 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Performance and mechanism of biosorption of nickel(II) from aqueous solution by non-living Streptomyces roseorubens SY
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
شیمی کلوئیدی و سطحی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Performance and mechanism of biosorption of nickel(II) from aqueous solution by non-living Streptomyces roseorubens SY Performance and mechanism of biosorption of nickel(II) from aqueous solution by non-living Streptomyces roseorubens SY](/preview/png/6977462.png)
چکیده انگلیسی
The biosorption of nickel(II) ions from aqueous solution by non-living strain Streptomyces roseorubens SY was thoroughly investigated as a function of pH, nickel(II) concentration, dosage, temperature, agitation speed and contact time. This versatile strain Streptomyces roseorubens SY was proved to be a highly efficient biosorbent for the removal of nickel(II) from aqueous solution. The optimum adsorption condition was occurred at a pH of 5.0, an initial nickel (II) concentration of 100â¯mg/L, a biomass of 1.0â¯g/L, an agitation speed of 150â¯rpm with a contact time of 60â¯min. The adsorption behavior of nickel(II) on strain Streptomyces roseorubens SY was evaluated by both Langmuir and Freundlich isotherms, resulting in R2 of 0.9584 and 0.9166, respectively. The biosorption data showed an excellent fit to Langmuir isotherm and the maximum adsorption capacity of nickel(II) by strain Streptomyces roseorubens SY was found to be 208.39â¯mg/g at 313â¯K. The pseudo-second-order model (R2â¯=â¯0.9998) provides the best fit for biosorption data than did pseudo-first-order model (R2â¯=â¯0.8988). Results from thermodynamic analysis indicated that the nickel(II) biosorption by strain Streptomyces roseorubens SY was endothermic and spontaneous. The biosorption mechanism was mainly ascribed to the contributions from functional groups of OH, CO, CO, NH, etc. Our findings suggest that strain Streptomyces roseorubens SY is a promising, cost-effective and environment-friendly biosorbent for the treatment of industrial wastewater containing nickel(II) ions.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Colloids and Surfaces A: Physicochemical and Engineering Aspects - Volume 548, 5 July 2018, Pages 125-133
Journal: Colloids and Surfaces A: Physicochemical and Engineering Aspects - Volume 548, 5 July 2018, Pages 125-133
نویسندگان
Jianyou Long, Xiaoning Gao, Minhua Su, Haipeng Li, Diyun Chen, Shuyi Zhou,