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Silica-loaded sulfuric acid-xanthogenate sewage processing agent

A xanthate, silica technology, applied in water/sewage treatment, water/sludge/sewage treatment, water pollutants, etc., can solve problems such as environmental impact, achieve simple preparation process, wide application range, Removal of visible effects

Inactive Publication Date: 2017-09-15
YANGZHOU POLYTECHNIC INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, excessive chromium will have serious effects on humans, animals and the environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Add 2 g of silica gel (300-400 mesh), 6 mmol of concentrated sulfuric acid, and 6 mmol of sodium ethyl xanthate to 10 mL of ether, stir at room temperature for 0.5-1 h, remove the ether with a rotary evaporator, and heat the remaining mixture to 100°C, kept at 100°C for 24 hours under vacuum to obtain a yellow powder, which is silica-supported sulfuric acid-sodium ethyl xanthate (hereinafter referred to as product A).

Embodiment 2

[0015] Add 2 g of silica gel (300-400 mesh), 6 mmol of concentrated sulfuric acid, and 6 mmol of sodium butyl xanthate to 10 mL of diethyl ether, stir at room temperature for 0.5-1 h, remove the diethyl ether with a rotary evaporator, and heat the remaining mixture to 105°C, kept at 105°C for 24 hours under vacuum to obtain a yellow powder, which is silica-supported sodium butylxanthate sulfate (hereinafter referred to as product B).

Embodiment 3

[0017] Add 2 g of silica gel (300-400 mesh), 6 mmol of concentrated sulfuric acid, and 6 mmol of sodium amyl xanthate to 10 mL of ether, stir at room temperature for 0.5-1 h, remove the ether with a rotary evaporator, and heat the remaining mixture to 105°C, kept at 105°C for 24 hours under vacuum to obtain a yellow powder, which is silica-supported sodium amyl xanthate sulfate (hereinafter referred to as product C).

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PUM

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Abstract

The invention relates to a silica-loaded sulfuric acid-xanthogenate sewage processing agent. The preparation method comprises the following steps: adding 300-400 meshes silica gel in ether, concentrated sulfuric acid and xanthogenate, stirring the materials for 0.5-1 h at room temperature, steaming the material by a rotary evaporation instrument to remove ether, heating a residual mixture to the temperature of 100-105 DEG C under vacuum, and keeping vacuum heating for 24-36 h to obtain yellow powder which is the silica-loaded sulfuric acid-xanthogenate, wherein, the usage amount of ether, silica gel, concentrated sulfuric acid and xanthogenate is 1 g of silica gel, 3 mmol concentrated sulfuric acid and 3 mmol of xanthogenate added in every 5 mL of ether, and the xanthogenate preferably selects sodium ethyl-xanthonate, potassium ethyl xanthogenate, sodium n-butyl-xanthate and potassium amyl xanthate.

Description

technical field [0001] The invention belongs to the field of sewage treatment, in particular to a silica-loaded sulfuric acid-xanthate sewage treatment agent. Background technique [0002] The aluminum alloy itself contains metals such as aluminum, zinc, magnesium, copper, etc., through the surface alkali cleaning and pickling process, and in the process of producing aluminum alloy, the surface oxidation treatment of aluminum alloy should be carried out with materials containing chromium and nickel, which will generate a lot of waste water , Wastewater contains a large amount of aluminum ions and a small amount of zinc, magnesium ions and heavy metal ions nickel, chromium, copper and so on. [0003] Chromium is one of the essential trace elements for humans and animals, and plays an important role in the metabolism of the human body. However, excessive chromium will have serious effects on human body, animals and environment. State for Total Chromium and Cr 6+ The dischar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/62C02F101/22
CPCC02F1/62C02F2101/22
Inventor 王芳徐忠娟周寅飞
Owner YANGZHOU POLYTECHNIC INST
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