Preparation and Application of Adsorbent Using Jute as Raw Material

Abstract

The invention belongs to solid adsorbents and preparation methods thereof, and particularly relates to an adsorption material with ephedran as the main ingredient and a preparation method of the adsorption material. The leaves and tender shoots of jute have the excellent performance of removing hexavalent chromium in water due to the fact that tissue cells of the leaves and the tender shoots contain rich polysaccharide substances such as pectin, groups such as -OH and -NH2 in the polysaccharide substances are typical basic groups, and with the special structure, the polysaccharide substances have a chelating effect on metal ions with a certain ionic radius under a certain PH value condition and are a natural metal chelating agent. According to the adsorption material and the preparation method, the leaves and tender shoots of corchorus olitorius serve as raw materials, rich polysaccharide substances such as pectin in the leaves and the tender shoots are separated out by adopting a physical and chemical means, the obtained substances are good in adsorption effect, operation is easy, cost is low, commercialization is easy to achieve, and the additional value of the traditional fiber crop jute is increased.

Description

technical field

[0001] The invention belongs to the field of sewage treatment containing heavy metal ions, and in particular relates to a method for removing hexavalent chromium ions in water by using jute extract as an adsorption material. Background technique

[0002] Since the discovery of the metal element chromium at the end of the 18th century, chromium and its compounds have been widely used in industrial production, and have become indispensable raw materials for metallurgy, metal processing, electroplating, leather making, paint, printing and dyeing, pharmaceuticals, photographic plate making and other industries. This produces large amounts of chromium-containing wastewater. Chromium exists mainly in the form of Cr(Ⅲ) and Cr(Ⅵ) in nature, Cr(Ⅲ) is an essential trace element for human body, and water-soluble Cr(Ⅵ) is listed as the eight most harmful to human body One of the chemical substances, it is one of the three internationally recognized carcinogenic metals, ...