Adsorption of p-cresol on novel diatomite/carbon composites

作者：Hadjar H; Hamdi B; Ania C O^*

来源：Journal of Hazardous Materials, 2011, 188(1-3): 304-310.

DOI：10.1016/j.jhazmat.2011.01.108

• Adsorption
• p-cresol
• Diatomite
• Carbon composite

Hybrid inorganic/organic adsorbents were synthesized using mixtures of diatomite and carbon charcoal as precursors. and explored for the removal of p-cresol from aqueous solution. The carbon/diatomite composites displayed a bimodal and interconnected porous structure which was partially inherited from both precursors. They display moderate surface areas (between 100 and 400 m(2) g(-1)) due to their large inorganic content (between 70 and 90 wt.%), since the diatomite is a non-porous material. Compared to activated carbons with a more developed porosity, p-cresol adsorption on the prepared carbon/diatomite composites was much faster, showing adsorption capacities similar to those of conventional adsorbents over a wide pH range. These results show a good affinity of p-cresol molecules towards the hybrid inorganic/organic composites, and demonstrate the suitability of these novel materials for the removal of aromatic (polar) molecules, despite their dominant inorganic character.

• 出版日期2011-4-15