Triarrhena lutarioriparia based modified charcoal preparation method, triarrhena lutarioriparia based modified charcoal and application

A biochar and modification technology, applied in chemical instruments and methods, restoration of polluted soil, other chemical processes, etc., can solve problems that have not yet been reported in research, and achieve the effect of rich pore structure and high adsorption rate

Inactive Publication Date: 2017-11-07
HUNAN AGRICULTURAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, in addition to being used as a biomass energy source, Nandi can also be used as a biochar material after processing, and is widely us

Method used

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  • Triarrhena lutarioriparia based modified charcoal preparation method, triarrhena lutarioriparia based modified charcoal and application
  • Triarrhena lutarioriparia based modified charcoal preparation method, triarrhena lutarioriparia based modified charcoal and application
  • Triarrhena lutarioriparia based modified charcoal preparation method, triarrhena lutarioriparia based modified charcoal and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The preparation method of Nandi-based modified biochar, specifically, the method includes the following steps:

[0033] (1) Preparation of Nandi-based biochar: clean Nandi (collected from Miscanthus Plant Resource Nursery of Hunan Agricultural University), bake at 70°C for 4h, take out and cool, cut into 2cm sections and smash into powder, take 10g of the Nandi powder in The crucible is placed in a vacuum atmosphere furnace, carbonized at 400°C for 2 hours and then cooled to obtain biochar;

[0034] (2) Nandi-based biochar treatment: weigh 0.5g of the biochar described in step (1) into a 100mL beaker, add 60mL of 1mol / L HCl and soak for 12h, wash the soaked biochar with distilled water at 2h intervals Second, then suction filtration, drying at 70°C, weighing, grinding and sieving to obtain acid-treated biochar;

[0035] (3) Nandi-based biochar alkali treatment: weigh 0.5g of the acid-treated biochar in step (2) into a 100mL beaker, add 0.4g (that is, the mass of the acid-trea...

Embodiment 2

[0039] The preparation method of Nandi-based modified biochar, specifically, the method includes the following steps:

[0040] (1) Preparation of Nandi-based biochar: Wash Nandi (collected from Miscanthus Plant Resource Nursery of Hunan Agricultural University), bake at 90°C for 6h, take out and cool, cut into 10cm sections and smash into powder, take 80g of the Nandi powder in The crucible is placed in a vacuum atmosphere furnace, carbonized at 700°C for 2 hours and then cooled to obtain biochar;

[0041] (2) Nandi-based biochar treatment: weigh 0.5g of the biochar described in step (1) into a 100mL beaker, add 60mL1mol / L HCl soak for 12h, wash the soaked biochar twice with distilled water at 4h intervals Second, then suction filtration, drying at 90°C, weighing, grinding and sieving to obtain acid-treated biochar;

[0042] (3) Nandi-based biochar alkali treatment: weigh 0.5g of the acid-treated biochar in step (2) into a 100mL beaker, add 0.6g (that is, the mass of the acid-treate...

Embodiment 3

[0046] The preparation method of Nandi-based modified biochar, specifically, the method includes the following steps:

[0047] (1) Preparation of Nandi-based biochar: Clean Nandi (collected from Miscanthus Plant Resource Nursery of Hunan Agricultural University), bake at 80°C for 5h, take out and cool, cut into 4cm sections and smash into powder, take 30g of the Nandi powder in The crucible is placed in a vacuum atmosphere furnace, carbonized at 500°C for 2 hours and then cooled to obtain biochar;

[0048] (2) Nandi-based biochar treatment: Weigh 0.5g of the biochar described in step (1) into a 100mL beaker, add 60mL of 1mol / L HCl to soak for 12h, and wash the soaked biochar with distilled water at intervals of 3h. Second, then suction filtration, drying at 80°C, weighing, grinding, sieving to obtain acid-treated biochar;

[0049] (3) Nandi-based biochar alkali treatment: weigh 0.5g of the acid-treated biochar in step (2) into a 100mL beaker, add 0.5g (that is, the mass of the acid-...

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Abstract

The invention discloses a triarrhena lutarioriparia based modified charcoal preparation method. According to the preparation method, Hunan endemic species triarrhena lutarioriparia is utilized as a raw material to prepare the triarrhena lutarioriparia based charcoal, and the triarrhena lutarioriparia based charcoal is treated by potassium hydroxide and hydrochloric acid to prepare a triarrhena lutarioriparia based modified charcoal material. The invention further discloses the triarrhena lutarioriparia based modified charcoal prepared by the preparation method and application of the triarrhena lutarioriparia based modified charcoal. The triarrhena lutarioriparia based modified charcoal has rich pore structures; meanwhile pore transport channels of the triarrhena lutarioriparia plants for conveying nutrients and water are kept and used for adsorbing heavy metal cadmium; an application way of the fast-growing grass triarrhena lutarioriparia is fully widened; the triarrhena lutarioriparia has the advantages of low cost, easiness in obtaining and extreme potency in environmental pollution treatment.

Description

Technical field [0001] The present invention relates to the technical field of agricultural production and processing, in particular to a preparation method of Nandi-based modified biochar and Nandi-based modified biochar, and also relates to the application of Nandi-based modified biochar for the adsorption of heavy metal cadmium. Background technique [0002] Heavy metals are widely present in the natural environment, including natural water bodies, agricultural soils, and the atmosphere. Excessive heavy metal content will cause harm to humans and other organisms. Not only can heavy metals not be biodegraded, they can also be accumulated through the accumulation of biological chains. If the content of heavy metals is enlarged step by step, its harm will also increase significantly. Moreover, this harm is long-term and irreversible. In addition, the rapid development of contemporary industry and agriculture in the Xiangjiang River Basin of Hunan Province has promoted metallurgy, ...

Claims

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Application Information

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IPC IPC(8): B01J20/20B01J20/30B09C1/00
CPCB01J20/20B09C1/00
Inventor 喻鹏曹哥尽易自立
Owner HUNAN AGRICULTURAL UNIV
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