Fast adsorbent used for emergency treatment of abrupt environmental pollution, and preparation method and application thereof

Abstract

The invention discloses a fast adsorbent used for emergency treatment of abrupt environmental pollution, and a preparation method and an application thereof. The fast adsorbent is prepared from rosin, an iron salt and an alkaline solution. Raw materials used in the invention have wide sources and low price, so the cost is low; and the preparation method is simple, so the method is suitable for large-scale production. Compared with other similar heavy metal and industrial dye adsorbents, the adsorbent disclosed in the invention has an extremely fast adsorption rate to heavy metals and industrial dyes under same conditions, and also has very high heavy metal and industrial dye adsorption ability. The removal of the heavy metals and the industrial dyes by other iron like oxide adsorbent is highly influenced by the pH value of a liquid, and the adsorbent disclosed in the invention can well adsorb the heavy metals and the industrial dyes under acidic and alkaline conditions. The pH range of practical wastewater is wide, and the adsorbent disclosed in the invention has very good heavy metal and industrial dye adsorption efficiency whether in acidic or alkaline environment, so the adsorbent has very high practical application values.

Description

technical field [0001] The invention belongs to the field of environmental science, and in particular relates to a fast adsorbent used for emergency treatment of sudden environmental pollution and its preparation method and application. Background technique [0002] In recent years, sudden environmental pollution accidents have occurred frequently in my country. According to some statistics, there are more than 2,000 accidents every year, with an average of more than 3 accidents per day. Among them, the hazards are serious, and there have been many sudden pollution incidents that once caused a sensation, including the Songhua River water pollution incident in 2005, the cadmium pollution incident in the Beijiang River Basin in Guangdong, the Tingjiang copper pollution incident caused by the dam collapse of Fujian Zijin Mining in 2010, and the 2011 incident. The Manganese Pollution Incident in Fujiang River in Sichuan, and the 2011 incident in Qujing, Yunnan Province, which po...

AI Technical Summary

Problems solved by technology

Previously, we reported that under the condition of adding clay as the support of iron oxide, biochar was prepared by pyrolyzing rosin to support nano-iron oxide (Journal of Materials Chemistry A, 2015, 3, 4595-4603). The addition of clay only serves to increase the viscosity of the rosin solution during the preparation of the adsorbent, but reduces the adsorption capacity of the adsorbent.