期刊文献+
共找到1篇文章
< 1 >
每页显示 20 50 100
Removal of Fluoride from Water Using Mesoporous MCM-41: An Optimization Approach Using Response Surface Methodology (RSM) 被引量:1
1
作者 Bodhaditya Das Saumen Banerjee +4 位作者 Prasanta K. raul rashmi r. devi Iohbor M. Umlong Anup K. Talukdar Sanjai K. Dwivedi 《Advances in Nanoparticles》 2021年第3期95-114,共20页
Fluoride above 1.5 mg<span><span style="color:#4F4F4F;font-family:-apple-system, " font-size:16px;white-space:normal;background-color:#f7f7f7;"="">·</span></span>L... Fluoride above 1.5 mg<span><span style="color:#4F4F4F;font-family:-apple-system, " font-size:16px;white-space:normal;background-color:#f7f7f7;"="">·</span></span>L<sup><span style="color:#4f4f4f;">-</span></sup><sup>1</sup> is injurious to health. Removal of fluoride from water using mesoporous MCM-41 as a strong adsorbent material has been attempted. Characterization using transmission electron microscopic study of calcined MCM-41 showed the regular hexagonal array of mesoporous channels with <span style="font-family:;" "="">an </span><span style="font-family:;" "="">average size of 20 nm and the surface area (BET study) of 1306.96 m<sup>2</sup><span style="color:#4F4F4F;font-family:-apple-system, " font-size:16px;white-space:normal;background-color:#f7f7f7;"="">·</span>g<sup><span style="color:#4f4f4f;">-</span></sup></span><sup>1</sup>. The average pore size of the particles was found to be 14.21 nm. <span style="font-family:;" "="">A </span><span style="font-family:;" "="">study on the effect of contact time on the removal of fluoride revealed that more than 85% uptake of fluoride onto MCM-41 was achieved at a contact time of 120 min. From </span><span style="font-family:;" "="">the </span><span style="font-family:;" "="">Langmuir adsorption study, the maximum sorption capacity of fluoride was found to be 63.05 mg/g at 301 K. From </span><span style="font-family:;" "="">the </span><span style="font-family:;" "="">thermodynamic study, the +ΔH<span style="color:#4F4F4F;font-family:-apple-system, " font-size:16px;white-space:normal;background-color:#ffffff;"="">o</span> value of 2.29 kJ<span style="color:#4F4F4F;font-family:-apple-system, " font-size:16px;white-space:normal;background-color:#f7f7f7;"="">·</span>mol<sup><span style="white-space:normal;"><sup></sup></span><span style="white-space:normal;color:#4f4f4f;">-</span></sup></span><sup>1</sup> indicated the endothermic nature of the removal process. Application of Response Surface Model suggested that 77.88% of fluoride removal can be achieved at fluoride concentration of 10 mg<span><span style="color:#4F4F4F;font-family:-apple-system, " font-size:16px;white-space:normal;background-color:#f7f7f7;"="">·</span></span>L<sup>-</sup><sup>1</sup>, pH (6.3)<span style="font-family:;" "="">,</span><span style="font-family:;" "=""> and contact time of 120 min.</span> 展开更多
关键词 MCM-41 Mesoporous Silica Adsorption FLUORIDE Response Surface Methodology (RSM)
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部