Preparation method of racomitrium canescens charcoal adsorbent

Abstract

The invention discloses a preparation method of a racomitrium biochar adsorbent, which comprises the following steps: preparing racomitrium biochar, specifically, washing the racomitrium by using deionized water to remove dust and impurities of the racomitrium, drying the racomitrium at 105 DEG C for 6 hours, crushing, and filtering by using a 0.45 mm screen; the preparation method comprises the following steps: filling 5g of racomitrium canescens into an ark with the volume of 120ml, putting the ark into a tubular furnace, and heating at constant temperature under the continuous nitrogen flow condition of 60cm < 3 > / min to prepare the racomitrium canescens biochar adsorbent, specifically, the constant-temperature heating temperature is 400-1000 DEG C, and the heating time is 60-120min; the preparation method comprises the following steps: spraying silane coupling agent modified Fe3O4-TiO2 mixed slurry on the surface of the racomitrium biochar, washing with water, drying, and activating in a nitrogen atmosphere for 1-3 hours to prepare the racomitrium biochar adsorbent. The racomitrium canescens charcoal adsorbent prepared by the invention has a remarkable surface pore structure and surface groups, is high in mesoporous rate, greatly improves the adsorption capacity to strontium, and provides an important reference material for solving strontium pollution.

Description

technical field [0001] The invention belongs to the technical field of environmental pollution treatment and sewage purification, and more specifically, the invention relates to a preparation method of sand moss biochar adsorbent. Background technique [0002] In recent years, biomass materials with high cellulose and lignin have been widely used in the preparation of biochar and in the treatment of water pollution. As a representative new environmental pollutant, strontium (Sr) poses a huge threat to human beings due to its persistence, bioavailability and toxicity. Using biochar adsorbents to solve this problem is one of the low-cost and effective channels. The increasingly serious environmental pollution, such as the serious shortage of water resources in many regions of the world, is one of the reasons for the rapid development of the nuclear energy industry and the imperfect production management system. As a relatively new type of industrial element, Sr has gradually...

AI Technical Summary

Problems solved by technology

Compared with other biomass, moss has high levels of sugar components, cellulose, lignin, carbohydrates and amino acids, which all contribute to the formation of a better carbon structure after pyrolysis, and are suitable for the development and application of lignocellulosic materials. It is beneficial to solve the problems of high cost, harsh application conditions, and easy secondary environmental pollution in traditional sewage treatment methods (J.g.llaurado, 2011; Quangvietly, et al, 2019)

In the application research of moss biomass, miat moss is more common, which has obtained good evaluation in sewage treatment and electrochemical research, but the research on other moss species is relatively scarce

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