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Citation: REN Yidan, WANG Aili. Adsorption of Cr (Ⅵ) by Dry Powder of Potamogeton crispus[J]. Chinese Journal of Applied Chemistry, ;2015, 32(7): 825-830. doi: 10.11944/j.issn.1000-0518.2015.07.140392 shu

Adsorption of Cr (Ⅵ) by Dry Powder of Potamogeton crispus

REN Yidan ,
WANG Aili ^,

1.
Key Laboratory of Coordination Chemistry and Functional Materials in Universities of Shandong, Dezhou University, Dezhou, Shangdong 253023, China

Corresponding author: WANG Aili,
Received Date: 14 November 2014
Available Online: 4 February 2015
Fund Project: 山东省自然科学基金高校、科研单位联合专项基金(ZR2013BL001) (ZR2013BL001)德州学院人才引进课题(2003kjrc06) (2003kjrc06)国家级大学生创新创业训练计划项目(201410448030) (201410448030)

The dry powder of Potamogeton crispus was developed as an efficient biosorbent material for the removal Cr (Ⅵ) from wastewater.The effects of adsorption equilibrium time,grain size of adsorbent particles,initial p H,the dosage of adsorbent,initial concentration of Cr (Ⅵ),and ionic strength on the adsorption performance were investigated by single-factor experiments.The adsorption process follows the pseudo secondorder kinetic with a correlation coefficient (R²) of 0.9998.The experimental data fit with Langmuir isotherm model.The maximum adsorption capacity of Cr (Ⅵ) by Potamogeton crispus is 35.0 mg/g.
- Potamogeton crispus,
- biosorbent,
- heavy metal,
- adsorption kinetics
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