Alayan Haiyam Mohammed, Alsaadi Mohammed Abdulhakim, Das Rasel, Abo-Hamad Ali, Ibrahim Rusul Khaleel, AlOmar Mohammed Khaled, Hashim Mohd Ali
University of Malaya Centre for Ionic Liquids, University of Malaya, Kuala Lumpur 50603, Malaysia E-mail:
Nanotechnology and Catalysis Research Centre (NANOCAT), University of Malaya, Kuala Lumpur 50603, Malaysia.
Water Sci Technol. 2018 Mar;77(5-6):1714-1723. doi: 10.2166/wst.2018.057.
In this study, carbon species were grown on the surface of Ni-impregnated powder activated carbon to form a novel hybrid carbon nanomaterial by chemical vapor deposition. The carbon nanomaterial was obtained by the precipitation of the methane elemental carbon atoms on the surface of the Ni catalyst. The physiochemical properties of the hybrid material were characterized to illustrate the successful growth of carbon species on the carbon substrate. The response surface methodology was used for the evaluation of adsorption parameters effect such as pH, adsorbent dose and contact time on the percentage removal of MB dye from aqueous solution. The optimum conditions were found to be pH = 11, adsorbent dose = 15 mg and contact time of 120 min. The material we prepared showed excellent removal efficiency of 96% for initial MB concentration of 50 mg/L. The adsorption of MB was described accurately by the pseudo-second-order model with R of 0.998 and q of 163.93 (mg/g). The adsorption system showed the best agreement with Langmuir model with R of 0.989 and maximum adsorption capacity (Q) of 250 mg/g.
在本研究中，通过化学气相沉积法在浸渍镍的粉末活性炭表面生长碳物种，以形成一种新型的混合碳纳米材料。碳纳米材料是通过甲烷元素碳原子在镍催化剂表面沉淀而获得的。对该混合材料的物理化学性质进行了表征，以说明碳物种在碳基底上的成功生长。采用响应面法评估了诸如pH值、吸附剂剂量和接触时间等吸附参数对从水溶液中去除亚甲基蓝（MB）染料百分比的影响。发现最佳条件为pH = 11、吸附剂剂量 = 15 mg和接触时间120分钟。对于初始浓度为50 mg/L的MB，我们制备的材料显示出96%的优异去除效率。用伪二级模型准确描述了MB的吸附，R为0.998，q为163.93（mg/g）。吸附系统与朗缪尔模型的拟合度最佳，R为0.989，最大吸附容量（Q）为250 mg/g。
