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Biological charcoal material for removing iodate in water and preparation method thereof

A biochar and water removal technology, applied in biofuels, water pollutants, chemical instruments and methods, etc., can solve the problems that iodate cannot be recycled and reused, resources are wasted, and the price is high

Inactive Publication Date: 2018-10-16
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the above method is expensive and produces certain impurities, and the iodate group cannot be recycled and reused, resulting in a waste of resources

Method used

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  • Biological charcoal material for removing iodate in water and preparation method thereof
  • Biological charcoal material for removing iodate in water and preparation method thereof
  • Biological charcoal material for removing iodate in water and preparation method thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0118] (3) The equipment for preparing biochar of the present invention is simple and beneficial to popularization; and it is not necessary to continuously feed nitrogen, which saves costs;

[0119] (4) The biochar of the present invention can be applied to remove iodate ions in wastewater, and the removal efficiency can reach more than 90%, and the removal efficiency is high;

[0120] (5) The method for removing iodate ions with biochar of the present invention can reclaim iodate and some biochar materials, broaden the selection range of adsorbents in the biological treatment process of wastewater purification, realize resource utilization of waste, and realize social benefits and economic benefits.

Embodiment 1

[0124] Crush corn stalks into powder;

[0125] Add 100g of corn stalk powder into the reactor of the carbonization equipment, and pass through the reactor to replace the reactor with nitrogen for 10-15 minutes, then heat at a rate of 6.5°C / min, the temperature rises from room temperature to 200°C, and keeps at 200°C for 60 minutes , and then continue heating at a heating rate of 3.5°C / min to 400°C and hold for 2 hours; then continue to heat up at a rate of 9.5°C / min to 500°C and hold for 2 hours, then continue to heat up at a rate of 9.5 °C / min, raise the temperature to 600 °C, and keep it warm for 2 hours; cool down to room temperature, open the reaction kettle, and obtain the generated carbonized powder;

[0126] Wash the above-mentioned carbonized powder with 300 mL of 0.1 mol / L hydrochloric acid, stir and wash for 3 hours, then filter, wash the filter cake with deionized water until neutral, and dry at 70°C for 24 hours to obtain biochar, with a mass of 30.0539 g; Denote ...

Embodiment 2

[0128] Crush corn stalks into powder;

[0129] Add 100g of corn stalk powder into the reactor of the carbonization equipment, and pass through the reactor to replace the reactor with nitrogen for 10-15 minutes, then heat at a rate of 6.5°C / min, the temperature rises from room temperature to 200°C, and keeps at 200°C for 60 minutes , and then continue to heat, the heating rate is 3.5 ° C / min, the temperature is raised to 400 ° C, and kept for 6 hours; when it is lowered to room temperature, the reaction kettle is opened to obtain the generated carbonized powder;

[0130] Wash the carbonized powder with 300mL of 0.1mol / L hydrochloric acid, stir and wash for 3h, then filter, wash the filter cake with deionized water until neutral, and dry at 70°C for 24h to obtain biochar with a mass of 35.2826g; for BC-2.

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Abstract

The invention provides a biological charcoal material for removing iodate in water and a preparation method thereof. The biological charcoal material comprises the following steps: taking waste plantstraws as raw materials and preparing the raw materials in powder; carrying out carbonization reaction at certain temperature; then carrying out post-treatment on carbonized powder, so as to obtain the biological charcoal material for removing iodate, wherein the removing efficiency of the biological charcoal material reaches 90 percent or more; the biological charcoal material has the advantagesof high efficiency of removing iodate in the water, low cost, wide material source, environment friendliness, no secondary pollution and simple preparation method; the reclamation of wastes is realized, and the biological charcoal material has social benefits and economic benefits; the invention further provides carbonization equipment for preparing the biological charcoal material; the equipmentis simple, convenient to use and low in cost, and is easy to popularize.

Description

technical field [0001] The invention relates to waste water purification treatment, in particular to a biochar material for removing iodate in waste water and a preparation method thereof. Background technique [0002] Wastewater containing iodate mainly comes from industrial wastewater. The iodate in water is a by-product of disinfection. The iodate has strong oxidative properties and is irritating to the eyes, mucous membranes, skin and upper respiratory tract; the iodate has a combustion-supporting effect, and can produce chemical Reactions, even burning, are irritating. [0003] In addition, part of the radioactive iodine produced in the atomic energy industry exists in the waste water in the form of iodate, and once it enters the environment, it will have an important impact on human production and life. [0004] Therefore, it is necessary to remove iodate in wastewater to protect the environment and create a harmonious and green ecology. [0005] At present, redox m...

Claims

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Application Information

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IPC IPC(8): B01J20/20B01J20/28B01J20/30C02F1/28C10B1/02C10B53/02C02F101/12C02F101/36
CPCB01J20/20B01J20/28016B01J2220/485C02F1/283C02F2101/12C02F2101/36C10B1/02C10B53/02Y02E50/10
Inventor 陈涛张奎许晋铭牛风雷元高才刘飘
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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