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Compound for restoring contaminated soil or contaminated water

A technology of polluted soil and compounds, applied in the restoration of polluted soil, water pollutants, water/sludge/sewage treatment, etc., can solve the problems of difficult treatment, groundwater pollution, etc., and achieve strong heavy metal removal ability and formaldehyde removal ability Effect

Active Publication Date: 2021-01-22
FNG RES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006]On the other hand, volatile organic compounds i.e. formaldehyde are not only present in the air but their aqueous solution i.e. formaldehyde solution is also widely used in preservatives for preventing spoilage, preservative wood, Wooden adhesives, textiles and other industries, if this formaldehyde solution infiltrates into the soil accidentally in the preparation factory, its treatment is very difficult, not only the soil but also serious groundwater pollution

Method used

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  • Compound for restoring contaminated soil or contaminated water
  • Compound for restoring contaminated soil or contaminated water
  • Compound for restoring contaminated soil or contaminated water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0109] 3,6,9,12-tetrakis(carboxymethyl)-3,6,9,12-tetraazatetradecanedioic acid (3,6,9,12-tetrakis(carboxymethyl)-3,6,9 , the preparation of 12-tetraazatetradecanedioic acid) (chemical formula 1e)

[0110]

[0111] Add 10.0g of triethylenetetramine (Triethylenenetetramine) and 400.0ml of acetonitrile (ACN) and stir, add 66.1g of K 2 CO 3 And 78.8g of ethyl bromoacetate (Ethyl bromoacetate) was heated and refluxed and stirred for 48 hours, and then the reaction was terminated. After cooling to normal temperature, filter, and vacuum concentrate the filtrate after the waste gas is solid. After adding 200 ml of dichloromethane (MC) and 300 ml of purified water to the concentrate, it was stirred for 30 minutes and left to stand for layer separation. with MgSO 4 After working up the organic layer and concentrating in vacuo, column purification with MC-MeOH (MC-MeOH) afforded 29.6 g of 3,6,9,12-tetrakis(2-ethoxy-2-oxoethyl)-3 , 6,9,12-tetraazatetradecanedioate (Diethyl 3,6,9,1...

Embodiment 2

[0116] 4,4',4",4"'-(((ethane-1,2-diylbis((4-carboxyphenyl)azanediyl))bis(ethane-2,1-diyl ))bis(azanetriyl))tetrabenzoic acid (4,4',4",4"'-(((ethane-1,2-diylbis((4-carboxyphenyl)azanediyl))bis(ethane-2 , Preparation of 1-diyl))bis(azanetriyl))tetrabenzoic acid) (chemical formula 1f)

[0117]

[0118] 10.0 g of triethylenetetramine, 108.1 g of ethyl 4-bromobenzoate (ethyl4-bromobenzoate), 46.0 g of t-BuONa, and 600 ml of toluene were added and stirred. After heating up to 35°C, add 2.8g of 50% (t-Bu) 3 The P toluene solution was stirred for 30 minutes, then warmed up to 50° C., and then 2.0 g of Pd(dba) 2 was added. After the temperature was raised, the mixture was stirred under reflux, and then the reaction was terminated. After cooling to room temperature, 1000 ml of pure water was added, stirred for 30 minutes, left to stand for layer separation, and the water layer was discarded. with MgSO 4After working up the organic layer and concentrating in vacuo, column purifica...

Embodiment 3

[0123] 5,5'-((2-((5-carboxypyridin-3-yl)(2-((5-carboxypyridin-3-yl)(2-((5-carboxypyridin-3-yl)(2 -carboxypyridin-4-yl)amino)ethyl)amino)ethyl)amino)ethyl)azanediyl)nicotinic acid (5,5'-((2-((5-carboxypyridin-3-yl )(2-((5-carboxypyridin-3-yl)(2-((5-carboxypyridin-3-yl)(2-carboxypyridin-4-yl)amino)ethyl)amino)ethyl)amino)ethyl)azanediyl) Preparation of dinicotinicacid) (chemical formula 1g)

[0124]

[0125] 10.0 g of triethylenetetramine, 108.5 g of ethyl 5-bromonicotinate (5-bromonicotinate), 46.0 g of t-BuONa, and 600 ml of xylene (Xylene) were added and stirred. After heating up to 35°C, add 2.8g of 50% (t-Bu) 3 The P toluene solution was stirred for 30 minutes, then warmed up to 50° C., and then 2.0 g of Pd(dba) 2 was added. After the temperature was raised, the mixture was stirred under reflux, and then the reaction was terminated. After cooling to room temperature, 1000 ml of pure water was added, stirred for 30 minutes, left to stand for layer separation, and the w...

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Abstract

The present invention provides a compound for restoring contaminated soil or contaminated water for the removal of heavy metals and formaldehyde wherein the compound includes at least one selected from a trientine or a trientine derivative represented by following formula 1, a cyclen or a cyclen derivative represented by following formula 2, and a cyclam or cyclam derivative represented by following formula 3 as an active ingredient.

Description

technical field [0001] The invention relates to a compound for repairing polluted soil or water by removing heavy metals and formaldehyde present in the soil or water. Background technique [0002] Today, various harmful substances discharged along with urbanization, industrialization, and indiscriminate resource development cause air pollution, soil pollution, water pollution, etc., and adversely affect human bodies and the environment. [0003] According to the 2012 survey of soil pollution in industrial parks conducted by the Ministry of Environment, soil and groundwater pollution was confirmed in 34 sites, which accounted for 5% of the 693 sites in 5 industrial parks across the country. The survey results showed that 13 sites were contaminated by copper, lead, Heavy metal pollution such as arsenic, mercury, cadmium, chromium, etc. According to a series of reports, for these industrial parks, public corporation areas, urban waste treatment areas and areas around abandoned...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09C1/08C02F1/28C02F1/62
CPCB09C1/08C02F1/285C02F2101/20C02F1/62C02F1/683C02F2101/34C02F2103/06C11D7/3245C11D7/3281
Inventor 具永三孙基男
Owner FNG RES
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