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Polluted water body petroleum adsorbent and preparation method thereof

An adsorbent and petroleum technology, applied in chemical instruments and methods, adsorption water/sewage treatment, other chemical processes, etc., can solve the problem of small adsorption capacity, achieve high-efficiency adsorption, reduce diffusion pollution, and solve the effects of oil pollution

Active Publication Date: 2012-12-19
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although corn straw has a certain oil absorption capacity, its adsorption capacity is small, so it is necessary to improve its adsorption effect through modification.

Method used

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  • Polluted water body petroleum adsorbent and preparation method thereof
  • Polluted water body petroleum adsorbent and preparation method thereof
  • Polluted water body petroleum adsorbent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] (1) Wash the corn stalks, dry them to constant weight, crush them and pass them through a 20-40 mesh sieve to obtain corn stalk powder;

[0042] (2) Take 1.5g of corn stalk powder (which has been sterilized by high pressure and humidity at 121°C), and evenly add 0.03g of Trichoderma viride suspension (adjusted to 10 by using a UV spectrophotometer). 7 spore ml -1 , that is, the dosage is 2%) and Mandel nutrient solution 4.5ml, at 30 ℃ and the solid-liquid ratio (g corn stalks:ml nutrient solution) is 1:3, respectively carry out solid-state fermentation culture 2, 4, 6, 8 , 10, 12 and 14 days;

[0043] (3) After cultivating for a specified number of days, use 75°C hot water to inactivate the microorganisms to terminate their reaction, rinse the modified corn stalks, and dry them to obtain an oil spill adsorbent;

[0044] (4) Measure the oil absorption of the material prepared after modification, and obtain the optimal culture time of 6 days, at which time the oil absor...

Embodiment 2

[0046] (1) Wash the corn stalks, dry them to constant weight, crush them and pass them through a 20-40 mesh sieve to obtain corn stalk powder;

[0047](2) Take 1.5g of corn stalk powder (which has been sterilized by high pressure and humidity at 121°C), and evenly add 0.03g of Trichoderma viride suspension (adjusted to 10 by using a UV spectrophotometer). 7 spore ml -1 , that is, the amount of bacterial injection is 2%) and Mandel nutrient solution, at 30 ° C, with four solid-liquid ratios of 1:1, 1:2, 1:3 and 1:4 (g corn stalks: ml nutrient solution) Carry out solid-state fermentation culture;

[0048] (3) After 6 days of cultivation, use hot water at 75°C to inactivate the microorganisms to terminate their reaction, rinse the modified corn stalks, and dry them to obtain an oil spill adsorbent;

[0049] (4) Measure the oil absorption of the material prepared after modification, and obtain the preferred solid-liquid ratio of 1:4, at which point the oil absorption reaches 13....

Embodiment 3

[0051] (1) Wash the corn stalks, dry them to constant weight, crush them and pass them through a 20-40 mesh sieve to obtain corn stalk powder;

[0052] (2) Take 1.5g of corn stalks (which have been sterilized by high pressure and humidity at 121°C), and evenly add 0.03g of Trichoderma viride suspension (adjusted to 10 by using a UV spectrophotometer). 7 spore ml -1 , that is, the dosage of bacteria is 2%) and Mandel nutrient solution 6ml, when the optimal modification days (6 days) and the optimal solid-liquid ratio (1:4), at 25°C, 30°C, 35°C and 40°C Under solid state fermentation culture;

[0053] (3) After 6 days of cultivation, use hot water at 75°C to inactivate the microorganisms to terminate their reaction, rinse the modified corn stalks, and dry them to obtain an oil spill adsorbent;

[0054] (4) The oil absorption of the modified material was measured, and the optimal cultivation temperature was 25°C, at which point the oil absorption reached 13.84g·g -1 ,Such as ...

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Abstract

The invention discloses a polluted water body petroleum adsorbent and a preparation method thereof. The preparation method comprises the following steps of: (1) cleaning maize straw, and drying to constant weight; (2) smashing the maize straw, sieving with a sieve of 20-40 meshes to obtain maize straw powder; (3) performing high-pressure moist heat sterilization on the maize straw powder, uniformly dripping an environment-friendly Trichoderma viride Persoon:Fries suspension and a Mandel nutrient fluid, and performing solid-state fermentation culturing under the condition that the temperature is 20-45 DEG C; and (4) culturing for 2-14 days, terminating a reaction, cleaning modified maize straw, and drying to obtain a petroleum adsorbent. A process adopted in the method is simple, the prepared adsorbent has high oil absorption capability and oil preserving capability, an operating process is simple, secondary pollution is avoided, and procedures from production to use are environment-friendly.

Description

technical field [0001] The invention relates to a petroleum adsorbent for polluted water and a preparation method thereof. Specifically, it is a method for preparing an adsorbent by modifying corn stalks with Trichoderma viride, and the adsorbent can be applied to the restoration of oil-polluted water bodies. Background technique [0002] Petroleum is a mixture of complex organic compounds such as alkanes, cycloalkanes and aromatics, among which aromatics have "three effects". Due to refinery emissions and ship operation leaks, about 1.2 million tons of oil enters water bodies around the world every year. Proper handling of oil spills at sea has always been a topic of concern. At present, the main methods to deal with offshore oil pollution include: (1) physical remediation; (2) chemical treatment; (3) biological remediation technology, etc. Among them, the oil spill adsorbent used in physical restoration has the possibility of removing and recovering oil spills quickly an...

Claims

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Application Information

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IPC IPC(8): B01J20/24B01J20/30C02F1/28
Inventor 党志蓝舟琳郭楚玲彭丹卢桂宁杨琛
Owner SOUTH CHINA UNIV OF TECH
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