A kind of oil soil remediation agent and preparation thereof

A technology of soil remediation agent and oil pollution, which is applied in the field of soil remediation and can solve problems such as environmental secondary pollution, environment and tidal flat damage

Active Publication Date: 2022-06-07
ZHEJIANG OCEAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most of the existing oil soil remediation agents are chemical remediation agents, which will cause secondary pollution to the environment
[0004] Shells are one of the important economic shellfish in my country, but most of the by-products of mussel shells after processing are discarded, causing serious damage to the environment and tidal flats

Method used

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  • A kind of oil soil remediation agent and preparation thereof
  • A kind of oil soil remediation agent and preparation thereof
  • A kind of oil soil remediation agent and preparation thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Example 1 Preparation of oily soil remediation agent

[0050] A preparation method of an oily soil remediation agent, comprising the following steps:

[0051] 1) Shell pretreatment

[0052] Soak 500 g of blue mussel shells in 50 L of 1% HCl solution for 24 hours to remove impurities, rinse with distilled water to remove residual hydrochloric acid on the surface, and then dry in an oven at 60°C for 24 hours to obtain 400.8 g of pretreated blue mussel shells;

[0053] 2) Surfactant freeze penetration

[0054] Soak the blue mussel shells pretreated in step 1) in 20L 0.5% fatty alcohol polyoxyethylene ether (AEO-9) surfactant for 48h, freeze at -20°C for 24h, and then store in an oven at 80°C Medium drying for 24h;

[0055] 3) High temperature calcination

[0056] Grind the frozen shells in step 2) into powder with a particle size of 50 meshes for subsequent high-temperature calcination treatment, place them in a muffle furnace, and raise the temperature to 300 °C at a ...

Embodiment 2

[0058] Example 2 Preparation of oily soil remediation agent

[0059] A preparation method of an oily soil remediation agent, comprising the following steps:

[0060] 1) Shell pretreatment

[0061] Soak 100g of blue mussel shells in 10L of 1% HCl solution for 24 hours to remove impurities, rinse with distilled water to remove residual hydrochloric acid on the surface, and then dry in an oven at 60°C for 24 hours to obtain 82 g of pretreated blue mussel shells;

[0062] 2) Surfactant freeze penetration

[0063] Soak the blue mussel shells pretreated in step 1) in 4L 0.5% fatty alcohol polyoxyethylene ether (AEO-9) surfactant for 48h, freeze at -20°C for 24h, and then store in an oven at 80°C Medium drying for 24h;

[0064] 3) High temperature calcination

[0065] Grind the frozen shells in step 2) into powder with a particle size of 50 meshes for subsequent high-temperature calcination treatment, place them in a muffle furnace, and raise the temperature to 300 °C at a rate o...

Embodiment 3

[0067] Example 3 Preparation of oily soil remediation agent

[0068] A preparation method of an oily soil remediation agent, comprising the following steps:

[0069] 1) Shell pretreatment

[0070] Soak 150 g of blue mussel shells in 15L of 1% HCl solution for 24 hours to remove impurities, rinse with distilled water to remove residual hydrochloric acid on the surface, and then dry in an oven at 60°C for 24 hours to obtain 124 g of pretreated blue mussel shells;

[0071] 2) Surfactant freeze penetration

[0072] Soak the blue mussel shells pretreated in step 1) in 6L of 0.5% fatty alcohol polyoxyethylene ether (AEO-9) surfactant for 48h, freeze at -20°C for 24h, and then store in an oven at 80°C Medium drying for 24h;

[0073] 3) High temperature calcination

[0074] Grind the frozen shells in step 2) into powder with a particle size of 50 meshes for subsequent high-temperature calcination treatment, place them in a muffle furnace, and raise the temperature to 300 °C at a r...

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Abstract

The invention relates to an oily soil remediation agent and a preparation method thereof. The oily soil remediation agent has a gray-black appearance, a pore diameter of 2-30nm, and a pore volume of 1.118×10 ‑3 ‑1.391×10 ‑ 3 cm 3 / g, the specific surface area is 1.021‑1.811m 2 / g, X-ray diffraction spectrometer analyzes that it has diffraction peaks at 29.40°, 35.96°, 39.40°, 43.16°, 47.51°, 48.50°, and infrared spectrum shows that it has a diffraction peak at 2680cm ‑1 , 2516cm ‑1 , 2335cm ‑1 , 1800cm ‑1 , 1445cm ‑1 , 876cm ‑1 , 708cm ‑1 There is an absorption peak. The present invention adopts surfactant freezing infiltration and high-temperature calcination to prepare shells into an oily soil remediation agent, which can effectively absorb and degrade oily soil in the soil, and the removal rate reaches 49.38%, and the seed germination rate and total biomass after repairing reach 100% and 71.08g / m 2 .

Description

technical field [0001] The invention relates to the technical field of soil remediation, in particular to an oily soil remediation agent and a preparation method thereof. [0002] technical background [0003] With the rapid development of the oil industry, oil spills have also increased, causing widespread soil pollution. Oil-contaminated soils usually contain benzene, toluene, ethylbenzene or petroleum hydrocarbons, which can enter the soil through different routes and cause serious harm to the environment. In recent years, a variety of oily soil remediation technologies have been developed, ranging from solvent extraction, adsorption, bioremediation technology to emerging technologies such as electrodynamic remediation and ultrasonic waves. Among these methods, adsorption method is considered to be an economical and sustainable oily soil source. Bit repair technology. At present, most of the existing oily soil remediation agents are chemical remediation agents, which wil...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B09C1/08
CPCB09C1/08B09C2101/00
Inventor 纪丽丽王振宋文东郭健蔡璐王亚宁
Owner ZHEJIANG OCEAN UNIV
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