Method for enhancing restoration of soil nitrobenzene contamination by anion-nonionic surfactant
A surfactant and soil restoration technology, which is applied in the field of soil organic pollution restoration, can solve the problems of unseen application reports of anion-nonionic mixed surfactants, secondary pollution, etc., and achieve easy large-scale promotion and low cost Effect
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0018] First, mix SDS and Tween80 at molar ratios of 1:0, 4:1, 3:2, 1:1, 2:3, 1:4, and 0:1, and prepare total concentrations of 0.5, 1.0, and 1.5 mmol, respectively. / L of mixed surfactant solution. Contaminate soil samples with methanol solution of nitrobenzene, the pollution amount is 10g nitrobenzene / kg soil, stir evenly, place in dark place to let methanol volatilize naturally, and prepare nitrobenzene contaminated soil samples. Spread a layer of quartz sand at the bottom of a plexiglass column with a diameter of 3cm, then weigh 100g of the contaminated soil sample and put it into the column, compact it, and then spread a layer of quartz sand evenly, and then use a mixed surfactant solution from top to bottom Rinse, the eluate is collected once per 100mL, and ends after collecting 40 groups.
[0019] Pipette the supernatant, centrifuge at 25±1°C and 4000 rpm for 10 min, measure the concentration of nitrobenzene in the eluate at 267.5 nm with a UV spectrophotometer, and ca...
Embodiment 2
[0022] First, SDS and Tween80 were mixed at a molar ratio of 3:2 to prepare mixed surfactant solutions with total concentrations of 1.0, 2.0, 3.0, and 4.0 mmol / L. Contaminate soil samples with methanol solution of nitrobenzene, the pollution amount is 10g nitrobenzene / kg soil, stir evenly, place in dark place to let methanol volatilize naturally, and prepare nitrobenzene contaminated soil samples. Spread a layer of quartz sand at the bottom of a plexiglass column with a diameter of 3 cm, then weigh 100 g of the contaminated soil sample and put it into the column, compact it, and then spread a layer of quartz sand evenly, and then spray it with a surfactant solution from top to bottom Washing, the eluate is collected once per 100mL, and ends after collecting 40 groups.
[0023] Pipette the supernatant, centrifuge at 25±1°C and 4000 rpm for 10 min, measure the concentration of nitrobenzene in the eluate at 267.5 nm with a UV spectrophotometer, and calculate the cumulative elutio...
Embodiment 3
[0026] Prepare a mixed solution of SDS-Tween80 with a total concentration of 5.0 mmol / L and a molar ratio of 3:2. Contaminate soil samples with methanol solution of nitrobenzene, the pollution amount is 10g nitrobenzene / kg soil, stir evenly, place in dark place to let methanol volatilize naturally, and prepare nitrobenzene contaminated soil samples. Spread a layer of quartz sand at the bottom of a plexiglass column with a diameter of 3 cm, then weigh 100 g of the contaminated soil sample and put it into the column, compact it, and then spread a layer of quartz sand evenly, and then spray it with a surfactant solution from top to bottom After washing, the eluate was collected every 100 mL, and the experiment ended after 40 groups were collected.
[0027] Pipette the supernatant, centrifuge at 25±1°C and 4,000rpm for 10min, measure the concentration of nitrobenzene in the eluate at 267.5nm with a UV spectrophotometer, and calculate the cumulative elution volume and elution rate....
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com