文章基本信息

标题：The Removal of Phosphorus in Solution by the Magnesium Modified Biochar from Bamboo
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作者：Jing Dai ; Xitong Zheng ; Hong Wang 等
期刊名称：Nature, Environment and Pollution Technology
印刷版ISSN：0972-6268
出版年度：2020
卷号：19
期号：1
页码：389-393
语种：English
出版社：Technoscience Publications
摘要：The eutrophication of water would cause the quality of the water to deteriorate and the algae to grow in large quantities. The recovery of phosphorus from sewage can not only purify the water quality, but also achieve the recycling of phosphorus. Its environmental and economic benefits are considerable. In this study, bamboo was used as raw material and modified with MgCl2 solution to prepare Mg-loaded biochar from bamboo (Mg@B). The adsorption experiments of phosphorus in solution by Mg@B were carried out. The adsorption kinetics of phosphorus by Mg@B was depicted by pseudo-first order kinetic and pseudo-second order kinetic models. The results showed that the surface of Mg@B is covered with the compound of Mg(OH)2. The adsorption process fits well with the pseudo-second order kinetics equation. The predominant process is chemisorption, which involves a sharing of electrons between the adsorbate and the surface of the adsorbent. The factor limiting the rate of reaction is primarily the number of surface-active sites of the adsorbent. The mechanism of Mg@B adsorbing phosphate ions in solution has physical adsorption, electrostatic adsorption and chemical precipitation.
关键词：Phosphorus;Magnesium modified biochar;Bamboo