Preparation method of amido modified ferrihydrite material and application thereof

• Main Authors: HAN MENGRAN, HUANG XIANG
• Format: Patent
• Language: Chinese; English
• Published: 21.01.2022
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; METALLURGY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; THEIR RELEVANT APPARATUS; TRANSPORTING; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

The invention discloses a preparation method of an amido-modified ferrihydrite material and an application thereof, and ferrihydrite is modified by using amido-rich polyethyleneimine with an iron element widely existing in nature as a raw material to obtain a chromium removal adsorbent with high adsorption capacity. The preparation method is a co-precipitation method and is environment-friendly, energy-saving and simple, the raw materials required by the preparation method are common, easy to obtain and non-toxic, and the obtained adsorbent has high performance on hexavalent chromium in wastewater and good cyclic utilization, and is a novel adsorbent for effectively treating the wastewater containing hexavalent chromium. 本发明公开一种胺基改性水铁矿材料的制备方法及其应用，以自然界广泛存在的铁元素为原料，利用富含胺基的聚乙烯亚胺对水铁矿进行改性，得到高吸附量的除铬吸附剂。本发明制备方法为共沉淀法，环保节能、方法简单，本发明所需原材料常见易得，无毒，得到的吸附剂对于废水中六价铬性能高，循环利用良好，是有效处理含六价铬废水的一种新型吸附剂。