Documents disponibles écrits par cet auteur

Adsorption and removal of a xanthene dye from aqueous solution using two solid wastes as adsorbents / Yuru Wang in Industrial & engineering chemistry research, Vol. 50 N° 14 (Juillet 2011) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 50 N° 14 (Juillet 2011) . - pp. 8734–8741 Titre : Adsorption and removal of a xanthene dye from aqueous solution using two solid wastes as adsorbents Type de document : texte imprimé Auteurs : Yuru Wang, Auteur ; Wei Chu, Auteur Année de publication : 2011 Article en page(s) : pp. 8734–8741 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Solid  waste  Aqueous  solution  Xanthene  dye  Adsorption Résumé : This study aims to explore the possibility of utilizing silica fume (SF) and coal fly ash (CFA), both of which are solid wastes and collected from producing silicon metal or ferrosilicon alloys and electric power station, respectively, as cost-effective adsorbents. Laboratory-scale experiments were carried out to investigate the adsorption equilibrium and adsorption kinetics of a xanthene dye Rhodamine B (RhB) on SF and CFA Batch experiments were conducted to evaluate the effects of various parameters including contact time, temperature, adsorbent dosage, ionic strength, and solution pH on the adsorption capacity of the two selected adsorbents. Experimental result showed that the adsorption equilibrium was achieved within 150 min for each adsorbent and both of the adsorption isotherms could be well fitted to the Freundlich model. However, the adsorption capacity and removal efficiency of SF is nearly 4 times higher than that of CFA under the same conditions. Electrostatic interaction and cation exchange reaction play an important role on the adsorption process of RhB on SF and CFA. Desorption studies showed that 50% ethanol could be used as an effective extractant for the reuse of the adsorbents and recovery of the adsorbate. The two selected adsorbents have a potential in the application of the dye wastewater treatment. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24346913 [article] Adsorption and removal of a xanthene dye from aqueous solution using two solid wastes as adsorbents [texte imprimé] / Yuru Wang, Auteur ; Wei Chu, Auteur . - 2011 . - pp. 8734–8741. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 14 (Juillet 2011) . - pp. 8734–8741 Mots-clés : Solid  waste  Aqueous  solution  Xanthene  dye  Adsorption Résumé : This study aims to explore the possibility of utilizing silica fume (SF) and coal fly ash (CFA), both of which are solid wastes and collected from producing silicon metal or ferrosilicon alloys and electric power station, respectively, as cost-effective adsorbents. Laboratory-scale experiments were carried out to investigate the adsorption equilibrium and adsorption kinetics of a xanthene dye Rhodamine B (RhB) on SF and CFA Batch experiments were conducted to evaluate the effects of various parameters including contact time, temperature, adsorbent dosage, ionic strength, and solution pH on the adsorption capacity of the two selected adsorbents. Experimental result showed that the adsorption equilibrium was achieved within 150 min for each adsorbent and both of the adsorption isotherms could be well fitted to the Freundlich model. However, the adsorption capacity and removal efficiency of SF is nearly 4 times higher than that of CFA under the same conditions. Electrostatic interaction and cation exchange reaction play an important role on the adsorption process of RhB on SF and CFA. Desorption studies showed that 50% ethanol could be used as an effective extractant for the reuse of the adsorbents and recovery of the adsorbate. The two selected adsorbents have a potential in the application of the dye wastewater treatment. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24346913

Efficient Degradation of an antibiotic norfloxacin in aqueous solution via a simulated solar - light - mediated Bi2WO6 process / Meijuan Chen in Industrial & engineering chemistry research, Vol. 51 N° 13 (Avril 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 13 (Avril 2012) . - pp. 4887–4893 Titre : Efficient Degradation of an antibiotic norfloxacin in aqueous solution via a simulated solar - light - mediated Bi2WO6 process Type de document : texte imprimé Auteurs : Meijuan Chen, Auteur ; Wei Chu, Auteur Année de publication : 2012 Article en page(s) : pp. 4887–4893 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Adsorption  Norfloxacin  Aqueous  solution Résumé : A simulated solar-light-mediated bismuth tungstate process (SSL/Bi2WO6) was employed to degrade norfloxacin photocatalytically. The effects of environmental parameters, including catalyst dosage, probe concentration, and solution pH, on the process performance were investigated systematically. Under weak alkaline conditions, an optimal decay performance that can be attributed to the beneficial effect of hydroxyl ions was obtained. The reaction rationale and related constants were determined by the Langmuir–Hinshelwood (LH) model, combined with the experimental results. Our results showed that the adsorption of norfloxacin onto Bi2WO6 benefited the SSL/Bi2WO6 process, and the Bi2WO6 maximum adsorption capacity was 3.20× 10–3 mmol/g. In the SSL/Bi2WO6 process, the degradation of norfloxacin was accompanied by the decomposition of germicidal group and benzene ring, as well as gradual generation of inorganic ions of NH4+ and F–. Furthermore, the toxicity of initial norfloxacin solution was efficiently eliminated by this SSL/Bi2WO6 process. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie300146h [article] Efficient Degradation of an antibiotic norfloxacin in aqueous solution via a simulated solar - light - mediated Bi2WO6 process [texte imprimé] / Meijuan Chen, Auteur ; Wei Chu, Auteur . - 2012 . - pp. 4887–4893. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 13 (Avril 2012) . - pp. 4887–4893 Mots-clés : Adsorption  Norfloxacin  Aqueous  solution Résumé : A simulated solar-light-mediated bismuth tungstate process (SSL/Bi2WO6) was employed to degrade norfloxacin photocatalytically. The effects of environmental parameters, including catalyst dosage, probe concentration, and solution pH, on the process performance were investigated systematically. Under weak alkaline conditions, an optimal decay performance that can be attributed to the beneficial effect of hydroxyl ions was obtained. The reaction rationale and related constants were determined by the Langmuir–Hinshelwood (LH) model, combined with the experimental results. Our results showed that the adsorption of norfloxacin onto Bi2WO6 benefited the SSL/Bi2WO6 process, and the Bi2WO6 maximum adsorption capacity was 3.20× 10–3 mmol/g. In the SSL/Bi2WO6 process, the degradation of norfloxacin was accompanied by the decomposition of germicidal group and benzene ring, as well as gradual generation of inorganic ions of NH4+ and F–. Furthermore, the toxicity of initial norfloxacin solution was efficiently eliminated by this SSL/Bi2WO6 process. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie300146h