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Mercury ion adsorbing material prepared from swill-cooked dirty oil and diatomite and preparation method thereof

An adsorption material, diatomite technology, applied in chemical instruments and methods, adsorption water/sewage treatment, other chemical processes, etc., can solve the problems of high treatment cost, limited production raw materials, difficult to popularize and apply, etc., and achieve high removal rate , The process is simple and easy, and the raw materials are cheap and abundant

Inactive Publication Date: 2018-12-14
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, many researches have been carried out on the treatment methods of mercury-containing wastewater in China, such as ion exchange method, activated carbon adsorption method, redox method, sulfide precipitation method, etc., but these methods are limited by raw materials, and the treatment cost is very high Promote application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) Firstly, grind diatomaceous earth into powder, sieving through a 200-mesh standard sample sieve, pass 40% sulfuric acid with a solid-liquid ratio of 1:4, mechanically stir, heat to 80℃, treat for 8h, and then use distilled water Wash to neutral, filter with suction, put it in a drying oven at 50-100°C for 24h, and finally put it in a muffle furnace at 450°C, heat it for 4h and seal it for later use;

[0025] (2) Take 9g of sulfur and add it to a 250ml round bottom flask. Heat the oil bath to 185°C to form an orange solution. Then, add 1g of waste oil to the round bottom flask and stir for 30min, then add 1g of diatomaceous earth, then heat and stir 10min, finally, add 20g of pre-milled NaCl. Within 10-15min, add NaCl several times under stirring to produce a thick paste mixture, cool for 1h, take out the product from the flask, grind and crush.

[0026] (3) Take the ground product and transfer it to a 1000ml beaker, then add a certain amount of deionized water, stir at r...

Embodiment 2

[0028] (1) The synthesis is the same as step (1) in Example 1;

[0029] (2) Take 7g of sulfur and add it to a 250ml round bottom flask. Heat the oil bath to 185℃ to form an orange solution. Then, drop 3g of waste oil into the round bottom flask and stir for 30min, then add 1g of diatomaceous earth and heat and stir. 10min. Finally, add 20g of pre-ground NaCl. Within 10-15min, add NaCl several times under stirring to produce a thick paste mixture. Cool for 1h, take out the product from the flask, grind and crush;

[0030] (3) The synthesis is the same as step (3) in Example 1; at this time, the adsorption amount of the product is 53.47 mg / g.

Embodiment 3

[0032] (1) The synthesis is the same as step (1) in Example 1;

[0033] (2) Take 5g of sulfur and add it to a 250ml round bottom flask. Heat the oil bath to 185°C to form an orange solution. Then, add 5g of waste oil to the round bottom flask and stir for 30min, then add 1g of diatomaceous earth and heat and stir. 10min. Finally, add 20g of pre-ground NaCl. Within 10-15min, add NaCl several times under stirring to produce a thick paste mixture. Cool for 1h, take out the product from the flask, grind and crush;

[0034] (3) The synthesis is the same as step (3) in Example 1; at this time, the adsorption capacity of the product is 63.12 mg / g.

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Abstract

The invention relates to a mercury ion adsorbing material prepared from swill-cooked dirty oil and diatomite, wherein the mercury ion adsorbing material is prepared from swill-cooked dirty oil, diatomite and sublimated sulfur as raw materials and through pickling, impurity removal and addition of a pore-making agent. The raw materials are added according to the following weight ratio: 3-9 parts ofsublimated sulfur, 1-6 parts of swill-cooked dirty oil and 1-3 parts of diatomite. After the components are subjected to reaction, the actually measured mercury ion adsorbing amount can reach 50-80 mg / g. The cheap diatomite and swill-cooked dirty oil are directly used as raw materials, molten sulfur is used as a solvent and NaCl is used as the pore-making agent, and the process has the advantagesof abundant required raw material sources, simple preparation process and cost saving; the adsorbent has strong acid and alkali resistance abilities, is easy to use, and is suitable for adsorption ofmercury ions in industrial wastewater.

Description

Technical field [0001] The invention belongs to the technical field of mercury ion adsorption, and relates to a mercury ion adsorption material prepared by using waste oil and diatomaceous earth and a preparation method thereof. Background technique [0002] Waste oil, the trash that flows quietly in urban sewers, is a reddish paste. Its main component is still triglycerides, but it has many more pathogenic and carcinogenic toxic substances than real edible oil. Sulfur is also known as sulfur, colloidal sulfur, and sulfur block. Sulfur can trap and stabilize mercury, but it is subject to several chemical and physical limitations that prevent it from being directly used for adsorption. For example, sulfur has a low ignition point (190°C), is easy to sublime, agglomerates easily and increases the hydraulic resistance in the filtration process, it is difficult to wet and mix in the batch processing of waste fluids, and it is difficult to prepare the required size for durability 性par...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/24C02F1/28B01J20/30C02F101/20
CPCB01J20/14B01J20/24C02F1/281C02F1/285C02F1/286C02F2101/20
Inventor 胡建设秦子雯付永
Owner NORTHEASTERN UNIV
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