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Biomass charcoal for improving saline alkali soil, preparation method, and preparation of derivative of biomass charcoal and application thereof

A biomass charcoal and saline-alkali soil technology, applied in the restoration, application, soil conditioning materials and other directions of polluted soil, can solve the problems such as being unsuitable for large-scale transformation of saline-alkali soil, high cost, and time-consuming, and achieve improved structure and Organic carbon stocks, effects on germination and growth

Inactive Publication Date: 2020-06-05
YANCHENG INST OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional saline-alkali soil improvement methods are costly and time-consuming, and are not suitable for large-scale improvement of saline-alkali soil
For example, the improvement of saline-alkali soil in coastal beaches generally requires ditches for drainage, spraying salt to refresh alkali, surrounding fields to store freshwater, planting reeds to raise fish, and then diverting water to grow rice, etc., which is costly and time-consuming, and does not conform to the rapid development of modern market-oriented agricultural production. need

Method used

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  • Biomass charcoal for improving saline alkali soil, preparation method, and preparation of derivative of biomass charcoal and application thereof
  • Biomass charcoal for improving saline alkali soil, preparation method, and preparation of derivative of biomass charcoal and application thereof
  • Biomass charcoal for improving saline alkali soil, preparation method, and preparation of derivative of biomass charcoal and application thereof

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Embodiment Construction

[0024] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0025] The application principle of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0026] 1. Preparation of biochar and its derivative products

[0027] 1.1 The present invention provides a method for utilizing tidal flat plants to produce improved saline-alkali soil biochar, and the specific steps are as follows:

[0028] (1) Collect tidal flat plants such as reeds and Spartina alterniflora.

[0029] (2) Air-dry the tidal flat plants until the water content is <25%, and then crush them and screen them through a sieve with a mesh size of no more than 5 mm to obtain...

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Abstract

The invention discloses biomass charcoal for improving saline alkali soil, a preparation method of the biomass charcoal and a preparation of a derivative of the biomass charcoal and an application thereof. The preparation method of the biomass charcoal comprises the steps that tidal flat plants are placed into thermal cracking equipment after being air-dried and smashed, under the protection of nitrogen, carbonization is conducted for 3-5 h at the temperature of 400-500 DEG C, and biochar is obtained; the biomass charcoal is dissolved in hydrochloric acid with the concentration of 0.05-0.15 Maccording to the mass-to-liquid ratio of 1: (10-20), oscillation is conducted for 20-24 h at the temperature of about 25 DEG C, then centrifugation and filtration are conducted, and the biochar agingliquid is obtained. The biochar prepared by the method can fully absorb salt in saline alkali soil, improve the structure of the soil and the inventory of organic carbon, and enable the saline alkalisoil to have the ability of planting crops. Meanwhile, the aging liquid of the biomass charcoal is also prepared, and the aging liquid can effectively promote germination and growth of the biomass charcoal.

Description

technical field [0001] The invention belongs to the technical field of saline-alkali soil improvement, and in particular relates to a biochar for improving saline-alkali soil, a preparation method, and preparation and application of derivatives thereof. Background technique [0002] Saline-alkali soil is a widely distributed soil type, and the global saline-alkali soil area accounts for about 25% of the total land area. my country's saline-alkali land is mainly distributed in the North China Plain, Northeast Plain, Northwest Inland and coastal areas. At the same time, my country is also a country with shortage of cultivated land resources in the world. In 2008, there were 1.826 billion mu of cultivated land in my country, which was a net decrease of 123 million mu from 1.949 billion mu in 1997. Normal agricultural production can provide a supplementary approach to achieve the balance of cultivated land occupation and compensation. [0003] Coastal saline-alkali soil general...

Claims

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Application Information

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IPC IPC(8): C09K17/02B09C1/08B09C1/00C09K101/00
CPCB09C1/00B09C1/08C09K17/02C09K2101/00
Inventor 崔立强严金龙丁成陈天明
Owner YANCHENG INST OF TECH
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