| Autor: |
Taibi, Bouziane, Bouras, Brahim, Rahmouni, Abdelkader |
| Předmět: |
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| Zdroj: |
Water, Air & Soil Pollution; Mar2023, Vol. 234 Issue 3, p1-12, 12p |
| Abstrakt: |
Dyes are usually present in the effluent water of many industries, such as textiles, leather, paper, printing, and cosmetics. The effectiveness of dye adsorption from wastewater has made to get alternative different low-cost adsorbents to other expensive treatment methods. The adsorption of methylene blue onto juniper wood powder (JWP) was investigated at temperatures (25–55 °C), initial methylene blue (MB) concentrations (1 to 32) 10−6 mol L−1, and adsorbent dosage at the given contact time for the removal of dye. The optimum adsorption conditions were found to be as medium pH of 5 and at the temperature of 25 °C for the varying adsorbent dosage. Equilibrium isotherms were analyzed by Langmuir isotherm. Adsorption data were well described by the Langmuir mode. The mass transfer model as intraparticle diffusion was applied to the experimental data to examine the mechanisms of the rate-controlling step. It was found that at the higher initial MB concentration, intraparticle diffusion is becoming a significant controlling step. The thermodynamic constants of the adsorption process were also evaluated by using the Langmuir constants related to the equilibrium of adsorption at temperatures varied in the range of 25–55 °C. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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