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首页> 外文期刊>RSC Advances >Phosphate adsorption onto thermally dehydrated aluminate cement granules
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Phosphate adsorption onto thermally dehydrated aluminate cement granules

机译：磷酸盐吸附到热脱水的铝酸盐水泥颗粒上

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摘要

Phosphorus is the main element for eutrophication of water bodies. Aluminate cement is a cheap building material rich in aluminium and calcium which have significant effects on phosphate adsorption. This study aimed at the investigation of removal behavior of phosphate by thermally dehydrated aluminate cement granules, treated at different temperatures, and the adsorption mechanisms. It was found that 600 °C was the optimal temperature, producing excellent granules with a particle size of 0.6–1.5 mm (T600), giving a great adsorption capacity of phosphate of 49.1 mg P per g and presenting fast and high initial adsorption, reaching a capacity of 23.7 mg P per g within 30 min at 20 °C. The phosphate adsorption process was dominated by chemical adsorption, mainly through inner-sphere complexion and phosphate precipitation on the surface of the adsorbent. Compared with other phosphate adsorbents, T600 may be an economical and efficient adsorbent.
机译：磷是水体富营养化的主要元素。铝酸盐水泥是一种廉价的建筑材料，富含铝和钙，它们对磷酸盐的吸附有显着影响。这项研究旨在研究热脱水的铝酸盐水泥颗粒在不同温度下对磷酸盐的去除行为，以及吸附机理。发现最佳温度为600°C，可生产出粒径为0.6-1.5 mm（T600）的优异颗粒，对磷酸盐的吸附能力高达49.1 mg P / g，并具有快速而高的初始吸附能力，达到在20°C下30分钟内的容量为23.7 mg P / g。磷酸盐的吸附过程主要是化学吸附，主要是内球络合和磷酸盐在吸附剂表面的沉淀。与其他磷酸盐吸附剂相比，T600可能是一种经济有效的吸附剂。

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