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Application of palygorskite clay serving as adsorbent in treatment of picric acid waste water

A palygorskite clay and adsorbent technology, which is applied in the direction of adsorption of water/sewage treatment, other chemical processes, chemical instruments and methods, etc., to achieve the effect of less addition, low cost and high removal rate

Active Publication Date: 2012-07-25
临泽县奋君矿业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the use of palygorskite clay to adsorb picric acid in wastewater has not been reported yet.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] (1) Treatment of palygorskite clay

[0023] Pulverize the palygorskite clay raw ore and pass it through a 200-mesh sieve for later use.

[0024] (2) Treatment of wastewater containing picric acid

[0025] Relevant indicators of wastewater: picric acid concentration 100mg / L, pH=4

[0026] Treatment method: Take 10mg of palygorskite clay, add it to 10mL of wastewater, stir for 30min, and settle for 15min.

[0027] Relevant indicators of treated wastewater: picric acid concentration 1.9mg / L, pH=6.8.

Embodiment 2

[0029] (1) Purification of palygorskite clay

[0030] Pulverize the palygorskite clay raw ore, pass through a 200 mesh sieve, disperse in distilled water, mechanically stir at a speed of 130r / min for 0.5~1h, ultrasonically disperse for 30min, leave to settle, dry, and pass through a 800 mesh sieve after crushing to obtain pure slope Gallostone clay.

[0031] (2) Treatment of wastewater containing picric acid

[0032] Relevant indicators of wastewater: picric acid concentration 100mg / L, pH=4

[0033] Treatment method: Take 10mg of purified palygorskite clay, add it to 10mL of wastewater, stir for 30min, and settle for 15min.

[0034] Relevant indicators of treated wastewater: picric acid concentration 1.8mg / L, pH=6.9.

Embodiment 3

[0036] (1) Treatment of palygorskite clay

[0037] Crush the palygorskite clay raw ore, pass through a 200-mesh sieve, disperse in distilled water, stir mechanically at a speed of 130r / min for 0.5-1h, ultrasonically disperse for 30min, and let it settle to obtain pure palygorskite clay; Disperse the stone clay in distilled water to form a suspension, add 1~2mol / L acid (hydrochloric acid, sulfuric acid or nitric acid, the amount of acid added is based on the fact that the palygorskite clay suspension no longer has bubbles), stir, centrifuge, and wash , dried, and crushed through a 600-mesh sieve for subsequent use.

[0038] (2) Treatment of wastewater containing picric acid

[0039] Relevant indicators of wastewater: picric acid concentration 100mg / L, pH=4

[0040] Treatment method: Take 10 mg of acid-treated palygorskite clay, add it to 10 mL of wastewater, stir for 30 minutes, and settle for 15 minutes.

[0041] Relevant indicators of treated wastewater: picric acid concen...

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Abstract

The invention relates to an application of palygorskite clay serving as an adsorbent in treatment of picric acid waste water, belonging to the technical field of wastewater treatment. The palygorskite clay serving as the adsorbent can be powder obtained after the palygorskite clay raw ore is crushed directly, purified palygorskite clay or palygorskite clay physically modified by utilizing acid treatment or thermal treatment or chemically modified by utilizing a surface active agent or coupling agent. The adsorption test proves that all types of palygorskite clay can favorably adsorb the picric acid in an aqueous phase with low adding amount and low cost. The wastewater treatment result fully meets the requirement of the Detection and Analysis Methods of Water and Wastewater (Fourth Edition) and GB8978-1996. Therefore, palygorskite clay has bright application prospect.

Description

technical field [0001] The invention belongs to the technical field of wastewater treatment, and relates to a treatment method for picric acid wastewater, in particular to the application of palygorskite clay as an adsorbent in the treatment of picric acid wastewater. Background technique [0002] Picric acid, chemical name is 2,4,6-trinitrophenol, yellow needle or block crystal, odorless, very bitter taste, density: 1.767; freezing point: 122.5°C, explosion point: 300°C, flash point: 150 ℃; not easy to absorb moisture, hardly soluble in cold water, easily soluble in hot water, easily soluble in boiling water; soluble in ethanol, ether, benzene and chloroform. It is mainly used in industries such as explosives, matches, dyes, pharmaceuticals and leather; picric acid can dissolve plastics and make them hydrolyze, and is a good solution for environmental protection industries to dissolve white garbage. Picric acid is toxic, and its main hazards to the human body are: inhalati...

Claims

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Application Information

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IPC IPC(8): C02F1/28B01J20/12
Inventor 张哲高淑玲杨翠玲李芳红崇雅丽王其召马恒昌雷自强
Owner 临泽县奋君矿业有限公司
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