Environment and Occupational Health Programme, School of Health Sciences, Health Campus, Universiti Sains Malaysia, 16150 Kubang Kerian, Kelantan, Malaysia.
Bioresour Technol. 2013 Apr;134:166-72. doi: 10.1016/j.biortech.2013.01.139. Epub 2013 Feb 6.
This study evaluates the sugarcane bagasse derived activated carbon (SBAC) prepared by microwave heating for the adsorptive removal of ammonical nitrogen and orthophosphate from the semi-aerobic landfill leachate. The physical and chemical properties of SBAC were examined by pore structural analysis, scanning electron microscopy, Fourier transform infrared spectroscopy and elemental analysis. The effects of adsorbent dosage, contact time and solution pH on the adsorption performance were investigated in a batch mode study at 30°C. Equilibrium data were favorably described by the Langmuir isotherm model, with a maximum monolayer adsorption capacity for ammonical nitrogen and orthophosphate of 138.46 and 12.81 mg/g, respectively, while the adsorption kinetic was best fitted to the pseudo-second-order kinetic model. The results illustrated the potential of sugarcane bagasse derived activated carbon for the adsorptive treatment of semi-aerobic landfill leachate.
本研究评估了由微波加热制备的甘蔗渣衍生活性炭（SBAC），用于从半好氧垃圾填埋渗滤液中吸附去除氨氮和正磷酸盐。通过孔隙结构分析、扫描电子显微镜、傅里叶变换红外光谱和元素分析对 SBAC 的物理化学性质进行了研究。在 30°C 的间歇模式研究中，考察了吸附剂用量、接触时间和溶液 pH 值对吸附性能的影响。平衡数据很好地符合朗缪尔等温吸附模型，对氨氮和正磷酸盐的最大单层吸附容量分别为 138.46 和 12.81mg/g，而吸附动力学最符合拟二级动力学模型。结果表明，甘蔗渣衍生活性炭具有吸附处理半好氧垃圾填埋渗滤液的潜力。
