Lee Chang-Gu, Lee Soonjae, Park Jeong-Ann, Park Chanhyuk, Lee Sang Jeong, Kim Song-Bae, An Byungryul, Yun Seong-Taek, Lee Sang-Hyup, Choi Jae-Woo
Center for Water Resource Cycle Research, Korea Institute of Science and Technology, Hwarangno 14-gil 5, Seongbuk-gu, Seoul, 02792, Republic of Korea.
Department of Earth and Environmental Sciences, Korea University, Seoul, 02841, Republic of Korea.
Chemosphere. 2017 Jan;166:203-211. doi: 10.1016/j.chemosphere.2016.09.093. Epub 2016 Sep 30.
In this study, the characterizations and adsorption efficiencies for chromium, copper and nickel were evaluated using manufacture-grade FeO-carbon foam. SEM, XRD, XRF and BET analyses were performed to determine the characteristics of the material. Various pore sizes (12-420 μm) and iron contents (3.62%) were found on the surface of the FeO-carbon foam. FeO-carbon foam was found to have excellent adsorption efficiency compared to carbon foam for mixed solutions of cationic and anionic heavy metals. The adsorption capacities for chromium, copper and nickel were 6.7, 3.8 and 6.4 mg/g, respectively, which were obtained using a dual exponential adsorption model. In experiments with varying dosages of the FeO powder, no notable differences were observed in the removal efficiency. In a fixed-bed column test, FeO-carbon foam achieved adsorption capacities for chromium, copper and nickel of 33.0, 12.0 and 9.5 mg/g, respectively, after 104 h. Based on these results, FeO-carbon foam was observed to be a promising material for treatment of plating wastewater.
在本研究中，使用工业级FeO-碳泡沫评估了对铬、铜和镍的表征及吸附效率。进行了扫描电子显微镜（SEM）、X射线衍射（XRD）、X射线荧光光谱（XRF）和比表面积分析（BET）以确定该材料的特性。在FeO-碳泡沫表面发现了各种孔径（12 - 420μm）和铁含量（3.62%）。对于阳离子和阴离子重金属混合溶液，发现FeO-碳泡沫相比于碳泡沫具有优异的吸附效率。使用双指数吸附模型得到铬、铜和镍的吸附容量分别为6.7、3.8和6.4mg/g。在不同剂量的FeO粉末实验中，未观察到去除效率有显著差异。在固定床柱试验中，104小时后FeO-碳泡沫对铬、铜和镍的吸附容量分别达到33.0、12.0和9.5mg/g。基于这些结果，观察到FeO-碳泡沫是一种用于处理电镀废水的有前景的材料。
