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Preparation method and application of iris manganese-enriched biochar

A biochar and enrichment technology, applied in the field of environmental ecology, can solve the problem of low solubility

Active Publication Date: 2021-11-02
CHINA THREE GORGES UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to the strong affinity between carbon atoms, biochar has high chemical and biological stability and low solubility

Method used

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  • Preparation method and application of iris manganese-enriched biochar
  • Preparation method and application of iris manganese-enriched biochar
  • Preparation method and application of iris manganese-enriched biochar

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Plant selection and cultivation

[0042] Plant cultivation: Iris was transplanted from the library of China Three Gorges University, and seedlings with good growth conditions were selected in the same area, and three plants were transplanted in each pot, with 4kg of shredded coconut and desiccated coconut (3:1) soil in each pot. A blank control group and two experimental groups were set up, with three repetitions in each group. The blank control was irrigated with water, and the experimental group was watered with prepared MnSO 4 The metal solution is watered to enrich the iris with manganese.

[0043] In order to prevent the plants from being unable to grow healthily due to the high concentration of the metal ion solution, first water with a low concentration of metal solution, and increase the concentration of the metal solution when the plant growth condition is good. The first stage of metal solution preparation: MnSO 4 ·H 2 O (9.22g / L, 1L), add culture medium onc...

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Abstract

In this paper, Iris without Mn stress was used as the blank group, and MnSO 4 The solution stresses the iris of the experimental group for 1 month and 2 months respectively. After harvesting and processing in N 2 Biochar enriched in manganese in situ was obtained by pyrolysis under atmosphere, and the biochar was named after the collection site, respectively BC‑L0, BC‑L1, BC‑L2; BC‑R0, BC‑R1, BC‑R2. Using rhodamine b as a probe molecule, the effects of pyrolysis temperature (500°C, 700°C, 900°C) and pyrolysis time (0.5h, 1h, 2h) on the adsorption capacity of biochar were studied, and the adsorption capacity of biochar was screened out. The preparation conditions when the capacity is at its best. The biochar was physically characterized by SEM, EDS, XRD, AAS, etc., and a Fenton-like system was established to study the catalytic ability of the biochar enriched in manganese. Using a glassy carbon disc electrode modified with biochar particles, the H in neutral medium was investigated by cyclic voltammetry scanning 2 o 2 The electrocatalytic reduction reaction on different biochar catalysts, and then the electrocatalytic properties of different biochars were characterized.

Description

technical field [0001] The invention relates to a preparation method and application of manganese-enriched biochar by transplanting iris and belongs to the technical field of environmental ecology. Background technique [0002] The development of social industry is inseparable from the development and utilization of mineral resources. Mineral mining activities will cause great damage to the surrounding environment, such as vegetation destruction in mining areas, geological disasters, groundwater pollution, waste gas, waste residue, and waste liquid "three wastes" pollution, etc. The development and utilization of non-ferrous metal minerals will also produce heavy metal pollution, causing serious damage to the surrounding atmospheric environment, water environment, and soil environment. Heavy metals are difficult to degrade in the environment and are bioaccumulative. Heavy metals that exist in various chemical forms will accumulate and migrate after entering the ecosystem, en...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/20B01J20/30B01J23/34C02F1/28C02F1/30C02F1/72C02F101/34C02F101/36C02F101/38
CPCB01J20/20B01J23/34B01J35/0033B01J35/004C02F1/283C02F1/30C02F1/722C02F1/725C02F2101/34C02F2101/36C02F2101/38C02F2305/026C02F2305/10
Inventor 方艳芬黄应平牛慧斌
Owner CHINA THREE GORGES UNIV