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Production method of mulberry trunk biomass charcoal/iron and manganese oxide compound adsorbent

A technology of iron-manganese oxide and composite adsorption, applied in chemical instruments and methods, adsorption of water/sewage treatment, water pollutants, etc., can solve problems such as poor effect, achieve simple process equipment, improve performance indicators, and reduce production costs Effect

Inactive Publication Date: 2019-06-07
GUILIN UNIVERSITY OF TECHNOLOGY
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these unmodified biochars have poor adsorption and removal effect on heavy metals.

Method used

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  • Production method of mulberry trunk biomass charcoal/iron and manganese oxide compound adsorbent
  • Production method of mulberry trunk biomass charcoal/iron and manganese oxide compound adsorbent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0020] (1) Peel the mulberry stems and dry them in the air, crush them with a universal crusher, pass through a 20-mesh sieve, and dry them in an oven at 85°C for later use.

[0021] (2) Weigh 40 g of the mulberry rod powder obtained in step (1) into a 2 L beaker, add 500 mL of zinc chloride solution with a concentration of 0.6 mol / L, stir evenly with an electric motor, heat it in a water bath to 95 °C, and heat it at 200 r / min oscillation frequency oscillation reaction for 4 hours.

[0022] (3) The product obtained in step (2) was naturally cooled, filtered, and dried at 60°C for 48 hours.

[0023] (4) Carbonize the product obtained in step (3) at 450°C, then grind it, and pass it through a 200-mesh sieve. The filter cake was washed repeatedly with water, and when the pH value of the filtrate reached 6.5, it was filtered, and the filter cake was placed in a porcelain plate and dried at 110° C. for 8 hours to obtain mulberry stalk biochar.

[0024] (5) Add 3 g of mulberry r...

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Abstract

The invention discloses a production method of a mulberry trunk biomass charcoal / iron and manganese oxide compound adsorbent. The production method of the trunk biomass charcoal / iron and manganese oxide compound adsorbent comprises the steps of adding crushed dried mulberry trunk powder into a ZnCl2 solution, stirring a mixture, and heating the mixture in a water bath for oscillation reaction; after naturally cooling, filtering and drying a product, conducting carbonization, grinding, screening, washing and drying on the product to obtain mulberry trunk biomass charcoal; placing a mulberry trunk biomass charcoal material in ultrapure water for ultrasonic treatment, adding a KMnO4 solution with magnetic stirring, heating a mixture in a water bath, and stirring the mixture; adding a NH4HCO3solution, and stirring a mixture; adding a FeSO4 solution dropwise, then using a NaOH solution for adjusting a mixture pH value to 6.0-8.0, heating a mixture in a water bath, and stirring the mixture;after naturally cooling, filtering and washing a product, drying the product to obtain the mulberry trunk biomass charcoal / iron and manganese oxide compound adsorbent. The production method of the mulberry trunk biomass charcoal / iron and manganese oxide compound adsorbent is simple in technology and equipment and easy to implement; and the obtained adsorbent has a good effect on treating chromium-containing wastewater, and can be widely applied in chromium-containing wastewater advanced treatment working procedures of industrial and mining enterprises.

Description

technical field [0001] The invention relates to a method for preparing a mulberry rod biomass char / iron-manganese oxide composite adsorbent. Using mulberry rods as the main material, the preparation method of the mulberry rod biomass carbon / iron-manganese oxide composite adsorbent is studied. The invention belongs to the field of material preparation and water treatment. Background technique [0002] In recent years, the problem of heavy metal pollution has become increasingly prominent. Chromium is a very harmful environmental pollutant, which often exists in the form of Cr(VI) and Cr(III). Especially, Cr(VI) is the most toxic and is often regarded as the first type of carcinogen. Hexavalent chromium is mainly chromate (CrO 4 2- ) and dichromate (Cr 2 o 7 2- ) form exists in water bodies. Chromium mainly comes from industries such as metallurgy, metal processing, electroplating, tanning, paint, pigment, printing and dyeing, and pharmaceuticals. Studies have shown th...

Claims

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Application Information

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IPC IPC(8): B01J20/20B01J20/30C02F1/28C02F101/22C02F103/10
Inventor 梁美娜徐水萍颜利玲王敦球张庆唐沈
Owner GUILIN UNIVERSITY OF TECHNOLOGY
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