Preparation method of mulberry stem active carbon/ferrum and manganese oxide composite adsorbent

An iron-manganese oxide, composite adsorption technology, applied in chemical instruments and methods, adsorption water/sewage treatment, other chemical processes, etc., can solve problems such as limited reserves of adsorbent materials, reduce production costs, and simplify the process. , the effect of improving performance indicators

Active Publication Date: 2015-09-09
GUILIN UNIVERSITY OF TECHNOLOGY
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Problems solved by technology

Common adsorbents include: activated carbon, activated clay, zeolite, biological materials, nanomaterials, etc., but due to the limited resources, the r...

Method used

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  • Preparation method of mulberry stem active carbon/ferrum and manganese oxide composite adsorbent

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Embodiment

[0016] (1) Peel the mulberry stems and crush them with a crusher, pass through a 20-mesh sieve, and dry them for later use.

[0017] (2) Take 10g of the crushed and dried mulberry stalks obtained in step (1) and place them in a 500mL beaker, add 100mL of potassium permanganate solution with a concentration of 40g / L, stir mechanically for 10 minutes, fully and evenly, use a glass surface Cover the dish and filter after soaking for 24 hours.

[0018] (3) Put the filter residue filtered in step (2) into a beaker, add 100mL ferrous chloride solution with a concentration of 40mg / L under rapid stirring, stir mechanically for 10 minutes, fully evenly, cover with a glass watch glass, After maceration for 24 hours, filter.

[0019] (4) Put the filter residue filtered in step (3) into a beaker, add 50mL of 7% sodium hydroxide solution, stir well, cover with a glass watch glass, filter after soaking for 6 hours, and then use ultra-pure Wash well with water.

[0020] (5) Put the filter...

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Abstract

The invention discloses a preparation method of a mulberry stem active carbon/ferrum and manganese oxide composite adsorbent. The preparation method comprises the following steps: adding 10g of dried and broken 20-mesh mulberry stems into 100ml of 20g/L-50/L potassium permanganate solution, mechanically stirring for 10 minutes, dipping for 12-48 hours, and filtering; putting filter residue into a beaker, adding 100mL of 10g/L-40g/L ferrous chloride solution, stirring for 10 minutes, dipping for 12-48 hours, and filtering; putting filter residue into the beaker, adding 50mL of 7% sodium hydroxide solution, stirring evenly, dipping for 6 hours, filtering, and washing fully by ultrapure water; drying obtained filter residue at 60 DEG C-70 DEG C for 12 hours, putting an obtained dried mixture into a crucible, forging at 400 DEG C-550 DEG C for 1-4 hours, cooling, grinding, and sieving by a 100-mesh sieve so as to obtain the mulberry stem active carbon/ferrum and manganese oxide composite adsorbent. By the method provided by the invention, the device is simple, the cost is low, and the obtained composite adsorbent has a good effect of treatment of wastewater containing arsenic.

Description

technical field [0001] The invention relates to a method for preparing a mulberry stalk activated carbon / iron-manganese oxide composite adsorbent, which uses agricultural waste mulberry stalks as the main raw material to prepare the activated carbon / iron-manganese oxide composite adsorbent. Background technique [0002] Today, with the rapid economic development, environmental problems have become the main factor restricting the rapid economic development, and the problem of heavy metal pollution has become increasingly prominent. At the same time, countries have successively reduced the maximum allowable concentration of arsenic in drinking water from 0.05mg / L to 0.01mg / L. This change in value shows that the treatment of arsenic-containing water has become a matter of great concern to environmental protection workers at home and abroad. There is arsenic in the constituent elements of humans and animals, but arsenic is not an essential element needed by the human body. The ...

Claims

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Application Information

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IPC IPC(8): B01J20/20B01J20/30C02F1/28C02F1/58
Inventor 梁美娜秦艳敏王敦球唐沈朱义年朱宗强
Owner GUILIN UNIVERSITY OF TECHNOLOGY
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