吸附
水溶液
废水
核化学
粒径
铈
傅里叶变换红外光谱
朗缪尔吸附模型
水溶液中的金属离子
化学工程
生物吸附
化学
材料科学
金属
无机化学
环境工程
有机化学
吸附
工程类
作者
Opeyemi A. Oyewo,Amanda Boshielo,Amos Adeniyi,Maurice S. Onyango
标识
DOI:10.1080/02726351.2019.1658666
摘要
Abstract The use of biomass as low cost and eco-friendly adsorbent has been investigated as alternative to current chemically synthesized media, which are used for the removal of toxic metals from wastewater. The effectiveness of nano-adsorbents obtained from orange (ORN) peels in the adsorption of cerium from simulated water has been studied. The nano-adsorbent were characterized by Brunauer–Emmett–Teller, Fourier transform infrared and transmission electron microscopy analyses. Analyses revealed that ORN exhibited narrow particle size distribution (4–50 nm), spherical morphology and enhanced surface area. The functional group found to be responsible for the coordination and removal of the metal ion was mainly the carboxyl group. The adsorption performance was studied as a function of adsorbent dosage, initial concentration, solution pH and temperature. The results were compared with banana peels nano-adsorbent (BPN), which contained similar biomolecules to ORN. In both samples, the adsorption process followed Langmuir isotherm model with the capacity of 45.2 mg g−1 for the ORN and 35.9 mg g−1 for BPN. The higher performance achieved using ORN might be due to the smaller particle size and higher surface area of ORN compared to the BPN. The results obtained indicated that nanostructured agricultural wastes could be potential adsorbents for Ce removal from wastewater.
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