Abstract In this study, we focused on the performance of an adsorbent such as a hydromagnesite stromatolite (HS) for rapid and efficient ultrasonic-assisted adsorption of Basic Blue 3, Basic Yellow 28 and Acid Red 336 dyes from aqueous solution. The initial dye concentration (0.05-0.10 g/L), adsorbent dose (0.1–0.5 g), pH (2–10), and temperature (20-40 °C) were evaluated. HS was characterized by means of BET, FTIR, SEM, and XRD. The surface area was observed to be 20.12 m2/g for HS. Different kinetic models, isotherm models (Langmuir, Freundlich, Temkin, Dubinin–Radushkevich, Redlich-Peterson, Frumkin, Harkins - Jura, Halsey and Henderson) and error analysis were calculated to explain the adsorption mechanism of dye on the surface of HS. The kinetic parameters of adsorption of all dyes were well-defined by the pseudo-second-order with R2 of 0.984-1.000 while the thermodynamic parameters demonstrated endothermic and feasible nature of the adsorption with ΔHo of 24.6-45.1 kJ/mol and ΔSo of 109.4-322.5 J/mol K. The uptake (%) values of HS for BB3, BY28 and AR336 were %31, %50, and %91, respectively. An eco-friendly and low-cost HS for removal of dyes from the aqueous solution within 100 s – 1200 s; HS was proposed in wastewater treatment.

中文翻译：

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碱性蓝 3、碱性黄 28 和酸性红 336 染料在水菱镁矿叠层石上的超声辅助吸附对比研究：动力学、等温线和误差分析

摘要 在本研究中，我们重点研究了水菱镁石叠层石 (HS) 等吸附剂在超声波辅助下从水溶液中快速有效吸附碱性蓝 3、碱性黄 28 和酸性红 336 染料的性能。评估了初始染料浓度 (0.05-0.10 g/L)、吸附剂剂量 (0.1-0.5 g)、pH (2-10) 和温度 (20-40 °C)。HS 通过 BET、FTIR、SEM 和 XRD 进行表征。观察到 HS 的表面积为 20.12 平方米/克。计算了不同的动力学模型、等温线模型（Langmuir、Freundlich、Temkin、Dubinin-Radushkevich、Redlich-Peterson、Frumkin、Harkins-Jura、Halsey 和 Henderson）和误差分析来解释染料在 HS 表面的吸附机制。所有染料的吸附动力学参数均由 R2 为 0 的伪二级定义。984-1.000 而热力学参数表明吸附的吸热和可行性质，ΔHo 为 24.6-45.1 kJ/mol，ΔSo 为 109.4-322.5 J/mol K。 BB3、BY28 和 AR336 的 HS 吸收 (%) 值为分别为 %31、%50 和 %91。一种环保且低成本的 HS，可在 100 秒至 1200 秒内从水溶液中去除染料；HS 被提议用于废水处理。