Động học hấp phụ phenol từ dung dịch nước trên vật liệu tổ hợp tio2/hydroxyapatit

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Tác giả: Thị Trúc Linh Nguyễn, Văn Dũng Nguyễn, Đình Tuấn Phan

Ngôn ngữ: vie

Ký hiệu phân loại: 628.5 Pollution control technology and industrial sanitation engineering

Thông tin xuất bản: Hóa học, 2013

Mô tả vật lý: 704-708

Bộ sưu tập: Metadata

ID: 557484

In this study, the TiO2/Hydroxyapatite (TiO2/HAp) composite prepared by chemical precipitation method were used as the adsorbent, and the potential of TiO2/HAp composite for phenol adsorption from aqueous solution was studied. The effect of contact time, initial phenol concentration, pH, adsorbent dosage and adsorption kinetic were investigated. The results showed that the increase in the initial phenol concentration could increase the phenol adsorption capacity. At the same time, increase in the pH over 11 or decrease in the pH under 4 resulted in the increase in the phenol adsorption capacity. The maximum phenol adsorption capacity was obtained as 4.13 mglg for 100 mg/L initial phenol concentrations at pH 6.4 and 35°C. The adsorption kinetic and the isotherm studies showed that the first order model and the Freundlich isotherm model were the best choices to describe the adsorption behaviors.
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