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Preparation and application methods of modified corncob biochar adsorbent

An application method, corn cob technology, applied in the direction of chemical instruments and methods, adsorption water/sewage treatment, water pollutants, etc., to achieve the effect of low price, easy availability, low price and low cost

Pending Publication Date: 2021-11-02
SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there is currently a lack of an excellent and inexpensive adsorbent material

Method used

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  • Preparation and application methods of modified corncob biochar adsorbent
  • Preparation and application methods of modified corncob biochar adsorbent
  • Preparation and application methods of modified corncob biochar adsorbent

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Embodiment Construction

[0033] specific implementation plan

[0034] The present invention will be described in detail below in conjunction with examples.

[0035] A preparation method of modified corn cob biochar adsorbent, said method comprising the following preparation process:

[0036] (1) Accurately weigh corn cobs and fill them in a crucible, place them in a muffle furnace for calcination at 500°C for 1.5 h, after natural cooling, take them out, pass through a 180-mesh sieve, and set aside.

[0037] (2) Saturated with 50 mL of NaHCO 3 The solution modified 10 g of corncobs after carbonization, and ultrasonicated for 5 min in an ultrasonic cleaner

[0038] (3) Stir in a water bath for 30 minutes in a magnetic stirrer, centrifuge after standing for 30 minutes, dry for 4 hours, wash with distilled water until neutral, and then dry in an oven.

[0039] (4) Put 8.0 g of the obtained particles into 2 mol / L 100 mL of FeCl 3 ·6H 2 O solution, sonicate for 5 min, then slowly drop in 1 mol / L NaOH s...

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Abstract

The invention discloses preparation and application methods of a modified corncob biochar adsorbent, and relates to preparation and application methods of the adsorbent; corncob biochar is used as a raw material, Fe is loaded on the corncob biochar, ASA and As (v) combined pollution wastewater is adsorbed at the same time, and the adsorbent is large in specific surface area, contains multiple functional groups, can be subjected to chemical adsorption and physical adsorption with ASA and As (v) at the same time, and has good arsenic fixing effect. The ASA and As (v) combined pollution wastewater is simultaneously and comprehensively treated, so that the methods are more suitable for the actual situation of industrial and agricultural pollution, the defect that only single pollution can be treated in the past is overcome, and the used corncob biochar raw material is wide in source, low in cost and recyclable, and has the characteristics of energy conservation, high efficiency and no secondary pollution; and the method is simple to operate and easy to industrialize, can provide a feasible way for large-scale production of a purifying agent, and is a promising method for treating wastewater / sediment containing ASA and As (v).

Description

technical field [0001] The invention relates to a preparation method of a biochar adsorbent and its application, in particular to a preparation and application method of a modified corncob biochar adsorbent. Background technique [0002] P-aminophenylarsenic acid, also known as arsanic acid (ASA), is an organic arsenic preparation. ASA is often widely used as a feed additive because of its effects of promoting growth, improving feed utilization, and improving the appearance of livestock and poultry. A large number of studies have shown that although arsenic preparations are easily absorbed by livestock and poultry, the utilization rate is very low, generally only about 5%. The unabsorbed arsenic is metabolized by animals and enters the soil and the in water environment. Since the early 1980s in Xinjiang, it was found that the arsenic content in drinking water and soil exceeded the standard, and people had been drinking the water in this place for a long time, which led to ...

Claims

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Application Information

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IPC IPC(8): B01J20/20B01J20/28B01J20/30C02F9/04C02F1/28C02F101/10C02F101/30
CPCB01J20/20B01J20/06B01J20/28057C02F1/283C02F9/00B01J2220/485C02F1/38C02F1/66C02F2101/103C02F2101/30
Inventor 臧淑艳邱洪未崔立志周华峰王娟
Owner SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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