用巴西莓石和巴西坚果壳制备的 HPO 活性炭：吸附法从水溶液中去除碱性蓝 26 染料。
HPO-activated carbons produced from açai stones and Brazil nut shells: removal of basic blue 26 dye from aqueous solutions by adsorption.
机构信息
School of Chemical Engineering, Federal University of Pará, Augusto Corrêa Street, 01, Belém, PA, 66075-110, Brazil.
School of Chemical Engineering, University of Campinas, Albert Einstein Avenue, 500, Campinas, SP, 13083-970, Brazil.
出版信息
Environ Sci Pollut Res Int. 2019 Oct;26(28):28533-28547. doi: 10.1007/s11356-019-04215-0. Epub 2019 Jan 30.
The adsorption characteristics of C.I. basic blue 26 (BB26) from aqueous solutions onto HPO-activated carbons (ACs) produced from açai stones (Euterpe oleracea Martius) and Brazil nut shells (Bertholletia excelsa H. B. K) were investigated in a batch system. The ACs were characterized by XRD, FT-IR, N adsorption at 77 K, mercury porosimetry, and acidity/basicity analysis. The pseudo-first-order, pseudo-second-order kinetic models and intraparticle diffusion model were used for the kinetic interpretations. The adsorption processes follow the pseudo-second-order kinetic model. The Boyd plots revealed that the adsorption processes were mainly controlled by film diffusion. Equilibrium data were analyzed by the Langmuir and Freundlich models, at different temperatures. The equilibrium data were best represented by the Langmuir isotherm. The adsorption processes were found to be favorable, exothermic, and spontaneous. The açai stones and Brazil nut shells-based ACs were shown to be effective adsorbents for removal of BB26 from aqueous solutions.
从水溶液中用 HPO 活化的巴西莓石（Euterpe oleracea Martius）和巴西果壳（Bertholletia excelsa H. B. K）制备的活性炭（AC）对 C.I.碱性蓝 26（BB26）的吸附特性进行了批处理系统研究。通过 XRD、FT-IR、77 K 下氮气吸附、压汞法和酸度/碱度分析对 AC 进行了表征。采用伪一级、伪二级动力学模型和内扩散模型对动力学进行了解释。吸附过程遵循伪二级动力学模型。Boyd 图表明，吸附过程主要受膜扩散控制。在不同温度下，通过 Langmuir 和 Freundlich 模型对平衡数据进行了分析。平衡数据最好用 Langmuir 等温线表示。吸附过程是有利的、放热的和自发的。巴西莓石和巴西果壳基活性炭被证明是从水溶液中去除 BB26 的有效吸附剂。
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