지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2011.8
- 수록면
- 615 - 624 (10page)
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초록· 키워드
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The discharge of heavy metals into aquatic ecosystems has become a matter of concern in over the world the last few decades. In this study, the lyophilized cells of Pleurotus eryngii (mushroom) were used as an inexpensive biosorbent for Cd(II) and Pb(II) removal from aqueous solutions. The effect of various physicochemical factors on Cd(II) and Pb(II) biosorption such as pH (2.0-7.0), initial metal concentration (0.0-300 mg L<sup>-1</sup>), temperature, fungal biomass and contact time (0-120 min) were studied. Optimum pH for removal of Cd(II) and Pb(II) was 6.0, and the contact time was 45 min at room temperature. The nature of biosorbent and metal ion interaction was evaluated by Infrared (IR) spectroscopic technique. IR analysis of mushroom biomass revealed the presence of amino, carboxyl, hydroxyl and methyl groups, which are responsible for biosorption of Cd(II) and Pb(II). The maximum adsorption capacities of P. eryngii for Pb(II) and Cd(II) calculated using Langmuir adsorption isotherm were 82.0 and 16.13 mg g<sup>-1</sup>, respectively. The adsorption isotherms for two biosorbed heavy metals were fitted well with Freundlich isotherm as well as Langmuir model with correlation coefficient (r<sup>2</sup>>0.99). Thus, this study indicated that the P. eryngii is an efficient biosorbent for the removal of Cd(II) and Pb(II) from aqueous solutions.
목차
Introduction
Materials and Methods
Results and Discussion
Conclusion
References
참고문헌 (51)
참고문헌 신청
Ahalya, N. / 2003 / Biosorption of heavy metals / Res. J. Chem. Environ 7(4):71~78
Aksu, Z. / 1992 / The biosorption of copper / Environ Technol 13:579~586
Bai, R.S / 2002 / Studies on enhancement of Cr(VI) biosorption by chemically modified biomass of Rhizopus nigricans / Water Res 36:1224~1236
Baldrian, P / 2003 / Interactions of heavy metals with white rot fungi / Enzyme and Microbial Technology 32:78~91
Baldrian, P / 2003 / Lignocellulose degradation by Pleurotus ostreatus in the presence of cadmium / Fems Microbiol. Lett 220:235~240
Aksu, Z. / 1992 / The biosorption of copper / Environ Technol 13:579~586
Bai, R.S / 2002 / Studies on enhancement of Cr(VI) biosorption by chemically modified biomass of Rhizopus nigricans / Water Res 36:1224~1236
Baldrian, P / 2003 / Interactions of heavy metals with white rot fungi / Enzyme and Microbial Technology 32:78~91
Baldrian, P / 2003 / Lignocellulose degradation by Pleurotus ostreatus in the presence of cadmium / Fems Microbiol. Lett 220:235~240
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