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
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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.
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Keywords:
- Potamogeton crispus,
- biosorbent,
- heavy metal,
- adsorption kinetics
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