Biochar-manganese composite material coated with biochar as well as preparation method and application of biochar-manganese composite material

A technology of manganese composite material and biochar, which is applied to the application of the above composite material in the restoration of Tl-containing groundwater, biochar-manganese composite material, and the preparation field of the above composite material, which can solve the problems of multiple pore structures, large specific surface area, and low Oxidation properties and other problems, to achieve the effect of easy large-scale production, low cost and simple operation

Active Publication Date: 2022-03-15
CHINESE RES ACAD OF ENVIRONMENTAL SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006]Biological charcoal has a wide range of raw materials, cheap and easy to obtain, and biochar prepared at high temperature is also an environmentally friendly adsorption material. Because its surface contains a variety of functional groups, it has a large specific surface area , There are many pore structures, so it shows strong adsorption performance for common pollutants in groundwater, but it does not have oxidation properties, because it cannot take advantage of the removal of heavy metals that can be removed by oxidation precipitation at the same time

Method used

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  • Biochar-manganese composite material coated with biochar as well as preparation method and application of biochar-manganese composite material
  • Biochar-manganese composite material coated with biochar as well as preparation method and application of biochar-manganese composite material
  • Biochar-manganese composite material coated with biochar as well as preparation method and application of biochar-manganese composite material

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The whole process can be referred to figure 1 .

[0037] (1) Take a ring Pseudomonas PUTIDA MN B1 (ATCC 23483) (size of 1-10 μm) strain, after high temperature and high pressure sterilization Nb liquid medium (containing 10 g / L protein, 3g / L beef powder, 5g / L NaCl, pH = 7) amplified 24h;

[0038] (2) 1 ml of the above-mentioned cultured bacterial liquid in a certain volume of growth medium (containing 0.5 g / L yeast, 0.222 g / l) CaCL 2 , 0.8118g / L MGSO 4 · 7h 2 O, 0.001G / L FECL 3 · 6h 2 O, 2.38g / L HEPES (pH = 7) and 1ml / L trace elements (including 6.4mg / l Cuso 4 44mg / l znso 4 · 7h2 O, 20mg / L CoCl 2 · 6h 2 O, 13mg / L Na 2 MOO 4 · 2h 2 O), the adjustment of the initial bacterial concentration bacteria OD600≈0.8, provided the initial Mn (II) at a concentration of 30mg / L; reacted at 26 ℃, 150rpm dark reaction 3d, to form a black suspension.

[0039] (3) wheat straw was added at 700 ℃ biocoke 6h of sterile charcoal (through 400 mesh) was added to the bla...

Embodiment 2

[0043] (1) Pseudomonas putida Mn B1 to select NB solid medium after autoclaving (containing 10g / L peptone, 3g / L beef extract powder, 5g / L NaCl, 20g / L agar, pH = 7) were incubated after incubation 24h, Cultivation one loopful of strain in the well-NB liquid medium after autoclaving (containing 10g / L peptone, 3g / L beef extract powder, 5g / L NaCl, pH = 7) was amplified 24h; take 1mL bacteria (0.15g / L ferrous ammonium sulfate, 0.15g / L sodium citrate, 0.075g / L yeast extract, 0.05g / L sodium pyrophosphate) in the nutrient medium, adjustment of the initial bacterial concentration OD600 ≈0.8;

[0044] (2) deg.] C while adding 800 to the system sterile charcoal biochar walnut shell (200 mesh) and 15mg / L of Mn (II), and the reaction was placed 30 ℃, shaking at 200rpm 5d dark reaction conditions, the reduction processes Mn (II) to a concentration of 0.086mg / L;

[0045] (3) adding 2mg / L Bioflocculant 24h the reaction to the reaction system, the resulting precipitate ...

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Abstract

The invention relates to a charcoal-manganese composite material coated with charcoal. The charcoal-manganese composite material is prepared by the following steps: (1) amplifying a pseudomonas putida strain in a sterilized NB liquid culture medium; (2) putting the bacterial liquid cultured in the step (1) into a growth culture medium or a nutrient culture medium, adjusting the bacterial liquid to enable the initial bacterial liquid concentration OD600 to be approximately equal to 0.8, setting the initial Mn (II) concentration to be 15-30mg / L, and reacting at room temperature under a dark condition to form a black suspension; and (3) adding sterile biochar into the black suspension prepared in the step (2), continuously reacting under room-temperature dark conditions to form macroscopic black precipitates, continuously adding a microbial flocculant, and reacting under room-temperature dark conditions to obtain a target product. The invention also discloses a preparation method of the composition. The material provided by the invention can give full play to the oxidation performance of BMO and the adsorption performance of BC, and is an efficient, environment-friendly and novel bioremediation material capable of well removing highly toxic heavy metal thallium in underground water.

Description

Technical field [0001] The present invention belongs to the field of environmental functional composites and water treatment technology, and more particularly to bio-manganese (BMO @ BC) composites for wrapping bio-carbon (BC). [0002] The invention also relates to the preparation method of the above composite material. [0003] The present invention also relates to the application of the composite material in the formation of TL (I) groundwater repair. Background technique [0004] 铊 (TL) is a versatile rare heavy metal that is much more than Hg, CD, PB, Zn, etc., is one of the 13-priority-controlled metal pollutants in the world, and TL in recent years. The exceeding standard detection in groundwater has caused increasing attention to them. The main presence form of TL in the water body is TL (I) and TL (III), wherein TL (I) has high solubility and mobility in water, which is extremely harmful; TL (i) is formed in a state of oxidation. Ineuled TL 2 O 3 It can significantly red...

Claims

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Application Information

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IPC IPC(8): B01J20/20B01J20/30C02F1/28C02F1/72C02F3/34C12P3/00C12R1/40C02F101/20C02F103/06
CPCB01J20/20B01J20/06C02F1/283C02F1/72C02F3/34C12P3/00C02F2101/20C02F2103/06
Inventor 姜永海杨昱张良静徐祥健韩旭邓圣夏甫吴叔璇
Owner CHINESE RES ACAD OF ENVIRONMENTAL SCI
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