Preparation and application of phosphorus-rich biochar based on mulberry branch waste

A waste and biochar technology is applied in the fields of agricultural waste recycling and resource utilization and soil improvement to achieve the effects of improving resource utilization, high phosphate content, and improving the ability to passivate heavy metals

Active Publication Date: 2021-08-24
INST OF AGRI RESOURCES & ENVIRONMENT GUANGDONG ACADEMY OF AGRI SCI
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  • Claims
  • Application Information

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Problems solved by technology

[0004] At present, there is no report on the preparation of phosphorus-rich biochar ...

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  • Preparation and application of phosphorus-rich biochar based on mulberry branch waste
  • Preparation and application of phosphorus-rich biochar based on mulberry branch waste
  • Preparation and application of phosphorus-rich biochar based on mulberry branch waste

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Embodiment 1

[0047] Example 1 Preparation of phosphorus-rich biochar based on mulberry branch waste and its application in improving heavy metal-contaminated soil

[0048] The technological process of this embodiment is as figure 1 Shown:

[0049] 1. Method for preparing phosphorus-rich biochar based on mulberry branch waste

[0050] 1.1 Preparation of conventional biochar

[0051] After the collected mulberry waste was removed, it was crushed into powder, and then the biomass was put into an anaerobic pyrolysis furnace (vacuum tube furnace BTF-1400C, Anhui Beike Equipment Technology Co., Ltd.) at 500 °C. Perform pyrolysis for 5 hours, then take out, grind and pass through a 20-100 mesh sieve to obtain conventional biochar.

[0052] 1.2 The preparation of phosphorus-rich biochar 1 comprises the following steps:

[0053] (1) Remove impurities from the collected mulberry branch waste (the waste left over from cutting branches in mulberry gardens), wash it with tap water, dry it naturally...

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Abstract

The invention belongs to the technical field of agricultural waste recycling and resourceful utilization and soil improvement, and particularly relates to preparation and application of phosphorus-rich biochar based on mulberry branch waste. Phosphorus-rich biochar is prepared through continuous pyrolysis, and the prepared phosphorus-rich biochar is applied to pollution treatment of farmland soil heavy metal; the phosphorus-rich biochar can effectively passivate soil heavy metals, inhibits the heavy metal absorption and accumulation process of crops, promotes the nutrition supply of soil to crops, and can be used as an efficient carbon-based soil conditioner for soil remediation. A large amount of mulberry branch waste can be reduced, and effective resource utilization of the mulberry branch waste can be realized.

Description

technical field [0001] The invention belongs to the technical field of agricultural waste recycling and resource utilization and soil improvement, and specifically relates to the preparation and application of phosphorus-rich biochar based on mulberry branch waste. Background technique [0002] my country is a large agricultural country. With the rapid development of modern agriculture, large-scale agricultural and forestry industries will also produce waste while harvesting fruits and wood. According to reports, the annual output of agricultural and forestry waste is close to more than 2 billion tons. Except for a small part that is reused, most of it is directly incinerated and wasted, causing direct or indirect environmental pollution. Among them, mulberry branch waste is a typical agricultural and forestry waste. my country's Chenglin mulberry garden produces 1522 tons of mulberry branches, accounting for more than 60% of the output of the mulberry garden. At present, ...

Claims

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Application Information

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IPC IPC(8): C09K17/02B09C1/08C09K101/00C09K109/00
CPCC09K17/02B09C1/08C09K2101/00C09K2109/00
Inventor 李翔刘忠珍黄连喜魏岚黄玉芬黄庆陈伟盛
Owner INST OF AGRI RESOURCES & ENVIRONMENT GUANGDONG ACADEMY OF AGRI SCI
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