Research Centre for Chemistry, National Research and Innovation Agency Republic of Indonesia, Jakarta, Indonesia.
Laboratory of Physical Chemistry, Department of Chemistry, Andalas University, Padang, Indonesia.
Int J Phytoremediation. 2024 Feb;26(3):393-404. doi: 10.1080/15226514.2023.2245053. Epub 2023 Aug 11.
The performance of sago bark for Cd(II) ions removal in the aqueous solution has been investigated using the batch method. The sago bark was facile-treated using HNO 0.01 M and its ability on Cd(II) removal was evaluated under specific parameters such as pH, contact time, agitation speed, temperature, initial concentration, and adsorbent mass. The adsorption capacity of sago bark was found to be 2.473 mg/g. The Langmuir isotherm model corresponding to the monolayer adsorption process described the adsorption data well. The kinetic and thermodynamic evaluation confirmed that the Cd(II) ion sorption followed a pseudo-second-order model and endothermic. The adsorption capacity decreased after three times adsorption-desorption cycles. This result showed that the treated sago bark could be a good candidate as an adsorbent for Cd(II) removal.
采用批量法研究了西米棕榈树皮在水溶液中去除 Cd(II)离子的性能。使用 0.01 M 的 HNO 对西米棕榈树皮进行了简便处理，并在特定参数下评估了其去除 Cd(II)的能力，如 pH 值、接触时间、搅拌速度、温度、初始浓度和吸附剂质量。发现西米棕榈树皮的吸附容量为 2.473 mg/g。Langmuir 等温模型很好地描述了描述单层吸附过程的吸附数据。动力学和热力学评价证实，Cd(II)离子的吸附遵循准二级动力学模型和吸热过程。三次吸附-解吸循环后，吸附容量下降。该结果表明，经过处理的西米棕榈树皮可以作为一种去除 Cd(II)的吸附剂。
