The batch extraction of cobalt [Co(II)] ions from an aqueous solution, utilizing the seeds of Peganum harmala has been evaluated in this study. After gathering Peganum harmala, the plants are beaten to separate the seeds, after which the seed undergo a fine filtration process to remove any debris. The prepared adsorption material is defined by Fourier transform infrared spectroscopy (FTIR). The adsorption process is conducted an incubator in 50 mL flasks. The studied process variables included pH, contact time, Co(II) concentration, adsorbent dose and reaction temperature. Co(II) is assessed with the use of a UV-vis spectrophotometer at a wavelength of 512 nm. Optimal Co(II) removal is noted at a pH of 6; increased alkalinity resulted in the generation of cobalt hydroxide. When contact time is increased from 5 to 40 min, the removal of Co(II) ions increased from 8 to 88%. This represented the maximum adsorption of Co(II) into Peganum harmala. After this time, equilibrium was achieved, with no further Co(II) extraction occurring. The higher the dose of adsorbent, the higher the degree of Co(II) ion removal; increasing the adsorbent from 0.1 to 0.4g/L result in an increase in extraction from 60 to 84%. A larger dose of adsorbent, up to 0.5 g/L, diminished further Co(II) ion subtraction. The Langmuir adsorption isotherm show a superior model fit compared with the Freundlich isotherm.

中文翻译：

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Peganum Harmala 种子从水溶液中去除钴 (II) 离子

本研究评估了利用山茱萸种子从水溶液中批量提取钴 [Co(II)] 离子。采集山茱萸后，将植物打散以分离种子，然后种子经过精细过滤过程以去除任何碎屑。制备的吸附材料由傅里叶变换红外光谱 (FTIR) 定义。吸附过程在 50 mL 烧瓶中的培养箱中进行。研究的过程变量包括 pH 值、接触时间、Co(II) 浓度、吸附剂剂量和反应温度。使用波长为 512 nm 的紫外可见分光光度计评估 Co(II)。在 pH 值为 6 时注意到最佳的 Co(II) 去除；碱度增加导致氢氧化钴的产生。当接触时间从 5 分钟增加到 40 分钟时，Co(II) 离子的去除率从 8% 增加到 88%。这代表了 Co(II) 最大吸附到山茱萸中。此后，达到平衡，不再发生 Co(II) 萃取。吸附剂用量越高，Co(II)离子去除程度越高；将吸附剂从 0.1 增加到 0.4g/L 会导致萃取率从 60% 增加到 84%。更大剂量的吸附剂，高达 0.5 g/L，进一步减少了 Co(II) 离子的去除。与 Freundlich 等温线相比，Langmuir 吸附等温线显示出更好的模型拟合。将吸附剂从 0.1 增加到 0.4g/L 会导致萃取率从 60% 增加到 84%。更大剂量的吸附剂，高达 0.5 g/L，进一步减少了 Co(II) 离子的去除。与 Freundlich 等温线相比，Langmuir 吸附等温线显示出更好的模型拟合。将吸附剂从 0.1 增加到 0.4g/L 会导致萃取率从 60% 增加到 84%。更大剂量的吸附剂，高达 0.5 g/L，进一步减少了 Co(II) 离子的去除。与 Freundlich 等温线相比，Langmuir 吸附等温线显示出更好的模型拟合。