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| 1 | Application of high silica zeolite ZSM-5 in a hybrid treatment process based on sequential adsorption and ozonation for VOCs elimination显示文摘In this study,a hydrophobic synthetic zeolite,namely ZSM-5 is chosen as an adsorbent/catalyst for toluene removal.Experimental results showed that toluene adsorption onto ZSM-5 was favourable,following a Langmuir adsorption isotherm model.ZSM-5 zeolite was regenerated using gaseous ozone at low temperature.Adsorbed toluene was oxidised,releasing mainly CO_2 and H_2O.Traces of oxidation by-products such as acetic acid and acetaldehyde were formed and remained adsorbed after the oxidativate regeneration with ozone.After four successive cycles of adsorption/ozonation,the adsorption efficiency was not affected(92%-99%).These results showed that volatile organic compound(VOC)removal by adsorption onto ZSM-5 zeolite followed by ozone regeneration could be used as a promising hybrid process for the control of VOC emissions in terms of efficiency. | Hicham Zaitan Marie Hélène Manero Héctor Valdés | 2016 | Journal of Environmental Sciences2016，28，3： | 23 |
| 2 | FTIR determination of adsorption characteristics for volatile organic compounds removal on diatomite mineral compared to commercial silica显示文摘 | Hicham Zaitan Tarik Chafik | 2005 | Comptes rendus - Chimie2005，，9： | 1 |
| 3 | 天然硅藻土矿物的高值化利用:在批式和固定床反应器中去除水溶液中的阴离子染料显示文摘以摩洛哥硅藻土(ND)为低成本吸附剂,采用批式和柱式吸附法对污染水体中刚果红(CR)染料的去除效率进行研究。考察了实验条件(p H、吸附剂剂量和温度)对ND吸附CR的影响。实验结果表明,在15 g/L ND、p H=6、接触时间为3 h、温度为25℃的条件下,CR的吸附量为6.07 mg/g,拟二级吸附模型与实验动力学数据吻合较好,Langmuir等温线模型能较好地描述吸附平衡数据。再生实验结果表明,当以乙醇为洗脱剂时,ND的解吸率达到50%。此外,还研究了连续模式下的吸附过程。用Yoon-Nelson模型可以很好地解释穿透曲线。在25℃条件下,当吸附剂用量为0.114 g,CR浓度为6 mg/L,流量为1 m L/min时,吸附量可达5.71 mg/g。 | HADRI Mohamed EL MRABET Imane CHAOUKI Zineb DRAOUI Khalid HAMDAOUI Mustapha DOUHRI Hikmat ZAITAN Hicham | 2022 | Journal of Central South University2022，29，6： | 1 |
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