- 期刊
Adsorption Equilibrium of Heavy Metals and Dyes from Wastewater with Low-Cost Adsorbents: A Review
低價吸附劑與廢水中重金屬及染料吸附平衡之回顧
摘要
本文回顧近年來以低價吸附劑吸附廢水中重金屬及染料之吸附平衡研究，低價吸附劑以農業廢棄物、工業廢棄物、無機材料、或天然製品製成，大多數工作採用Langmuir或Freundlich等溫吸附模型描述吸附數據。雖然大部份低價吸附劑吸附量較活性碳為低，但前者之低價格為其主要競爭優勢。本文除敘述如溫度及PH等操作參數對吸附平衡之影響外，亦強調文獻中在估算相關熱力學參數時可能忽視之部份。
關鍵字
無資料並列摘要
This review surveyed recent publications on the adsorption uptakes of heavy metals and dyes from water and wastewater streams using low-cost adsorbents derived from agricultural waste, industrial wastes, inorganic particulates. or some natural products Most adsorption works adopted either the Langmuir or Freundlich isotherms (or both) for adsorption data correlation Despite a few exceptions, the waste-derived adsorbents have lower adsorption uptakes than the activated carbon However, the cheapness of the former represents the major advantage for possible applications Effects of process parameter, such as temperature and pH, on and the possible mechanisms to metals or dyes adsorption were addressed in some detail We also highlighted the compensation effects during thermodynamic parameter evaluation, which were possibly overlooked in current literature.