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Modified papermaking sludge adsorbent, and preparation method and application thereof

A papermaking sludge and adsorbent technology, applied in the field of environmental science, can solve the problems of high cost and difficult treatment, and achieve the effects of no secondary pollution, obvious adsorption effect, and simple preparation method

Inactive Publication Date: 2015-10-07
SOUTH CHINA AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Moreover, the treatment of these pollutions is more difficult and costly, so it is particularly important to solve this problem

Method used

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  • Modified papermaking sludge adsorbent, and preparation method and application thereof
  • Modified papermaking sludge adsorbent, and preparation method and application thereof
  • Modified papermaking sludge adsorbent, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1) Papermaking ink sludge (purchased from Guangzhou Paper Group Co., Ltd.) was dried and made into powder at a drying temperature of 80° C. and a drying time of 12 hours.

[0029] (2) Add ferric chloride solution to the sludge, stir evenly, add ammonia solution, adjust pH=9, let stand for 24 hours, suction filter to obtain solid, and fully dry. The concentration of iron salt is kept at 1mol / L, and the mass of sludge is 30%.

[0030] (3) Carbonize in a muffle furnace, the carbonization temperature is 300°C, and the carbonization time is 20 minutes. After cooling, it is ground into powder to obtain the modified papermaking sludge adsorbent.

Embodiment 2

[0032] (1) After the papermaking ink sludge is dried, it is made into a powder at a drying temperature of 80°C and a drying time of 12 hours.

[0033] (2) Add ferric chloride solution to the sludge, stir evenly, add ammonia solution, adjust pH=9, let stand for 24 hours, suction filter to obtain solid, and fully dry. The concentration of iron salt is kept at 0.5mol / L, and the mass of sludge is 20%.

[0034] (3) Carbonize in a muffle furnace, the carbonization temperature is 500°C, and the carbonization time is 10 minutes. After cooling, it is ground into powder to obtain the modified papermaking sludge adsorbent.

Embodiment 3

[0036] (1) After the papermaking ink sludge is dried, it is made into a powder at a drying temperature of 80°C and a drying time of 12 hours.

[0037] (2) Add ferric chloride solution to the sludge, stir evenly, add ammonia solution, adjust pH=9, let stand for 24 hours, suction filter to obtain solid, and fully dry. The concentration of iron salt is kept at 0.1mol / L, and the mass of sludge is 10%.

[0038] (3) Carbonize in a muffle furnace, the carbonization temperature is 800°C, and the carbonization time is 5min. After cooling, it is ground into powder to obtain the modified papermaking sludge adsorbent.

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Abstract

The invention discloses a modified papermaking sludge adsorbent, and a preparation method and an application thereof. The preparation method of the adsorbent comprises the following steps: drying sludge, and processing to form powder; adding an iron salt solution to the obtained sludge powder, uniformly stirring, adding an alkaline solution, adjusting the pH value to 7-9, standing, carrying out pumping filtration to obtain a solid, and fully drying; and keeping the iron salt concentration in a range of 0.1-1mol / L and the sludge mass in a range of 10-30%; and carbonizing the dried solid, cooling, and grinding to form powder which is the modified papermaking sludge adsorbent. A raw material used in the invention is papermaking ink sludge, and is cheap and easily available, so secondary utilization of wastes is realized. The preparation method has the advantages of simplicity, no secondary pollution and environmental protection. The sludge adsorbent prepared in the invention can be used for adsorbing heavy metal wastewater, dye wastewater and the like in order to solve the pollution problem, has an obvious adsorption effect, and has an adsorption rate reaching 90%.

Description

technical field [0001] The invention belongs to the field of environmental science, and relates to a modified papermaking sludge adsorbent and its preparation method and application, in particular to an adsorbent obtained by using papermaking sludge to load iron salts under the action of lye and its preparation method with application. Background technique [0002] According to a conservative estimate, the amount of papermaking sludge produced by waste paper pulping in the Pearl River Delta reaches 17,000 to 55,000 tons per year. Today, the main methods of disposal are incineration and landfill, which will cause secondary pollution, and the accumulation of heavy metals in the sludge has a negative impact on The environment has a huge impact. By making it into an adsorbent, it can be turned into a resource to achieve resource reuse. [0003] With the continuous progress of various industries, the discharge of wastewater has increased sharply, and the pollution of heavy meta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/30C02F1/28C02F1/62C02F1/58
Inventor 蒋刚彪刘永林曹飘杨吴锦华黄健菲阮仲航
Owner SOUTH CHINA AGRI UNIV
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