Division of Bioresource, Paper and Coatings Technology, School of Industrial Technology, Universiti Sains Malaysia, 11800 Penang, Malaysia.
J Hazard Mater. 2010 May 15;177(1-3):70-80. doi: 10.1016/j.jhazmat.2009.12.047. Epub 2009 Dec 14.
In this article, the use of low-cost adsorbents for the removal of methylene blue (MB) from solution has been reviewed. Adsorption techniques are widely used to remove certain classes of pollutants from waters, especially those which are not easily biodegradable. The removal of MB, as a pollutant, from waste waters of textile, paper, printing and other industries has been addressed by the researchers. Currently, a combination of biological treatment and adsorption on activated carbon is becoming more common for removal of dyes from wastewater. Although commercial activated carbon is a preferred adsorbent for color removal, its widespread use is restricted due to its relatively high cost which led to the researches on alternative non-conventional and low-cost adsorbents. The purpose of this review article is to organize the scattered available information on various aspects on a wide range of potentially low-cost adsorbents for MB removal. These include agricultural wastes, industrial solid wastes, biomass, clays minerals and zeolites. Agricultural waste materials being highly efficient, low cost and renewable source of biomass can be exploited for MB remediation. It is evident from a literature survey of about 185 recently published papers that low-cost adsorbents have demonstrated outstanding removal capabilities for MB.
本文综述了从溶液中去除亚甲基蓝 (MB) 的廉价吸附剂的应用。吸附技术被广泛用于从水中去除某些类别的污染物，特别是那些不易生物降解的污染物。研究人员已经针对纺织、造纸、印刷和其他行业废水中的 MB 作为污染物的去除问题开展了研究。目前，生物处理与活性炭吸附相结合，越来越多地用于从废水中去除染料。尽管商业活性炭是一种用于去除颜色的首选吸附剂，但由于其相对较高的成本，其广泛应用受到限制，这导致了对替代非传统和低成本吸附剂的研究。本文综述的目的是整理有关各种潜在的低成本吸附剂去除 MB 方面的广泛信息。这些吸附剂包括农业废物、工业固体废物、生物质、粘土矿物和沸石。农业废料作为高效、低成本和可再生的生物质资源，可以用于 MB 的修复。从最近发表的约 185 篇论文的文献综述中可以明显看出，低成本吸附剂对 MB 的去除具有出色的能力。
