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首页> 外文期刊>Current Science: A Fortnightly Journal of Research >Adsorption of arsenic using low cost adsorbents: guava leaf biomass, mango bark and bagasse
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Adsorption of arsenic using low cost adsorbents: guava leaf biomass, mango bark and bagasse

机译：使用低成本吸附剂吸附砷：番石榴叶生物量，芒果树皮和甘蔗渣

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摘要

Adsorbents prepared from inexpensive materials of guava leaf biomass, mango bark and bagasse were studied for As(III) removal from the aqueous solution. The effects of pH, contact time, initial As(III) concentration and adsorbent dosage on the adsorption of As(III) were studied using batch experiments. Adsorption process was also verified with Langmuir, Freundlich, Temkin and Redlich-Peterson models. Langmuir isotherm fitted best in the experimental data. Application of Langmuir isotherm to the system yielded the maximum capacities of 1.35 mg g(-1), 1.25 mg g(-1) and 1.05 mg g(-1) for bagasse, mango bark and guava leaf biomass respectively, in the range of As(III) concentration as 10-140 mg l(-1). The dimensionless equilibrium parameter, R-L, signifies favourable adsorption of As(III) on all adsorbents and was observed to be in the range of 0.029-0.294, 0.021-0.235 and 0.021-0.234, for bagasse, mango bark and guava leaf biomass respectively (0 R-L 1). The adsorption process was observed to follow pseudo-second-order kinetic model.
机译：研究了由廉价的番石榴叶生物质，芒果树皮和甘蔗渣制备的吸附剂，用于从水溶液中除去。使用批量实验研究了pH，接触时间，初始作为（III）浓度和吸附剂对As（III）的吸附的影响。吸附过程也用Langmuir，Freundlich，Temkin和Redlich-Peterson模型验证。 Langmuir等温线在实验数据中最适合。 Langmuir等温线的应用分别产生1.35mg g（-1），1.25mg g（-1）和1.05mg g（-1）的最大容量，分别为甘蔗渣，芒果树皮和番石榴叶生物量，在范围内（iii）浓度为10-140mg l（-1）。无量纲平衡参数R1表示良好的吸附（III）在所有吸附剂上，分别观察到Bagasse，Mango Bark和Guava叶生物量的0.029-0.294,0.021-0.235和0.021-0.234（ 0＆ rl＆ 1）。观察到吸附过程遵循伪二阶动力学模型。

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