Characterization and Potential of Samanea saman-Activated Carbon on Adsorption of Copper from an Aqueous Solution

A. Ni’am, Muhamad Suhar, Ernso Fenelon
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引用次数: 1

Abstract

The mining and electroplating industries have resulted in the contamination of the environment with heavy metal. This has resulted in a serious threat to the ecological environment and human health due to the presence of copper pollution. To address this issue, extensive efforts have been made to develop effective methods for removing contaminants, particularly heavy metal, and Samanea saman (SS) was selected as precursor production of activated carbon. Therefore, this study is aimed at investigating Samanea saman-activated carbon (SSAC) to remove copper from an aqueous solution. SS was chemically activated by potassium carbonate and carbonized at 600°C for 5 hours, while SSAC was characterized by scanning electron microscopy-energy dispersive X-ray (SEM-EDS), Fourier-transform infrared (FTIR), and proximate tests. Copper adsorption on SSAC was evaluated by the Langmuir, Freundlich, Langmuir, Freundlich, Redlich-Peterson, Harkin-Jura, and Jovanovic models. Pseudo-first-order, pseudo-second-order, Elovich, and intraparticle diffusion models were used to identify adsorption process mechanism. SEM-EDS results presented that the pore of SSAC was heterogeneous, irregular in shape, and mesopore. In addition, FTIR analysis identified the main functional groups present in SSAC as C-H, C-O-C, and C-O. The proximate test conducted on SSAC determined the water content, volatile matter, ash content, and fixed carbon to be 0.61%, 22.26%, 9.77%, and 67.97%, respectively. The results showed that SSAC exhibited exceptional performance with copper removal efficiency of 99.49% under an adsorbent mass of 0.25 g, a reaction time of 30 minutes, and a concentration of 10 mg/L. Isotherm adsorption of SSAC followed the Redlich-Peterson model with an adsorption capacity (Qm) of 0.663 mg/g, correlation value ( R 2 ) of 0.9992, and pseudo-second-order pattern R 2 = 0.9997 . Therefore, SSAC can be proposed as a potential and economical biomaterial to treat heavy metal in wastewater.
沙曼活性炭对铜的吸附性能及应用前景
采矿和电镀工业对环境造成了重金属污染。由于铜污染的存在,对生态环境和人类健康造成严重威胁。为了解决这一问题,人们努力开发有效的去除污染物,特别是重金属的方法,并选择了Samanea saman (SS)作为活性炭的前体产品。因此,本研究旨在研究Samanea saman-活性炭(SSAC)去除水溶液中的铜。SS经碳酸钾化学活化,在600℃下碳化5小时,SSAC通过扫描电镜-能谱x射线(SEM-EDS)、傅里叶变换红外(FTIR)和近似测试进行了表征。采用Langmuir、Freundlich、Langmuir、Freundlich、Redlich-Peterson、Harkin-Jura和Jovanovic模型对铜在SSAC上的吸附进行了评价。采用拟一阶、拟二阶、Elovich和颗粒内扩散模型对吸附过程机理进行了分析。SEM-EDS结果表明,SSAC的孔隙呈非均匀、不规则形状,为中孔结构。此外,FTIR分析发现SSAC中存在的主要官能团为C-H、C-O- c和C-O。对SSAC进行近似试验,测定其含水量为0.61%,挥发物含量为22.26%,灰分含量为9.77%,固定碳含量为67.97%。结果表明,在吸附剂质量为0.25 g、反应时间为30 min、吸附剂浓度为10 mg/L的条件下,SSAC对铜的去除率达到99.49%。SSAC的等温吸附符合Redlich-Peterson模型,吸附量(Qm)为0.663 mg/g,相关值(r2)为0.9992,拟二阶模式r2 = 0.9997。因此,SSAC可作为一种有潜力且经济的生物材料来处理废水中的重金属。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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