Journal
KOREAN JOURNAL OF CHEMICAL ENGINEERING
Volume 34, Issue 4, Pages 1073-1080Publisher
KOREAN INSTITUTE CHEMICAL ENGINEERS
DOI: 10.1007/s11814-016-0348-3
Keywords
Polycyclic Aromatic Hydrocarbons; Adsorbents; Acid Hydrolysis; Partitioning; Adsorption Coefficients
Funding
- International Joint Key Project from Chinese Ministry of Science and Technology [2010DFB23160]
- National Natural Science Foundation of China [41273092]
- Public welfare project of Chinese Ministry of Environmental Protection [201409042]
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Development and application of low-cost and effective adsorbents to remove polycyclic aromatic hydrocarbons from effluents has become a research focus in recent years. We selected reed stem, ginkgo nut shell and hazelnut shell as adsorbents, and used acid hydrolysis as a simple modification technology. The adsorption isotherms of naphthalene to raw and modified adsorbents were controlled by partitioning. The adsorption capability of the hydrolysed hazelnut shell was notably enhanced at a higher level compared with that of other adsorbents. Results showed that the adsorption capacity (17250.42 mu g/g) of modified hazelnut shell was observed for an initial naphthalene concentration of 25mg/L, with a contact time of 72 h, adsorbent dosage of 1 g/L and initial pH of 7.0. Furthermore, the regeneration capability of hydrolyzed hazelnut shell indicated that it was a promising adsorbent for naphthalene removal in wastewater treatment.
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