【正文】 效的磷酸鹽吸附和水體和土壤中磷的固定中發(fā)揮主要作用。﹣對磷酸的去除也是正在被調(diào)查?！? and CO?178。IntroductionAs a main nutrient, phosphate is very essential for growth of organisms in most ecosystems. However, excessive amounts of phosphate supply to water bodies may cause eutrophication and subsequent deterioration of water quality [1,2]. In fact, the presence of trace amounts of phosphate (even less than 1 mg/L) in the treated wastewater from municipalities and industries is often responsible for entrophication in receiving water bodies [3]. Therefore, removing phosphate is very necessary before discharging wastewater into water techniques such as chemical precipitation [4], adsorption [5], reverse osmosis [6], biological removal [7,8], and constructed wetlands [9] have been employed for removal of phosphate from wastewaters. Among these available approaches,chemical precipitation and biological removal are generally not able to meet the stringent effluent standards and reverse osmosis is a high capital cost, while the adsorption methods proved to be more promising due to their low cost, effective treatment in dilute solutions, and high uptake capacity. Another attractive feature of this technique is that the nutrientloaded ?lters can be used in agriculture as phosphate fertilizer and soil conditioner [10]. A large number of materials from natural minerals to synthetic ones have been used as adsorbents to adsorb phosphate from wastewater [11–15]. Recently, the application of low cost and easily available materials for phosphate removal has been widely investigated,such as fly ash [16–18], blast furnac