Preparation method for fleur-de-lis manganese-enriched biochars and application thereof

A biochar, enrichment technology, applied in the field of environmental ecology, can solve problems such as low solubility

Active Publication Date: 2019-03-29
CHINA THREE GORGES UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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 for fleur-de-lis manganese-enriched biochars and application thereof
  • Preparation method for fleur-de-lis manganese-enriched biochars and application thereof
  • Preparation method for fleur-de-lis manganese-enriched biochars and application thereof

Examples

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

The invention takes Mn stress-free fleur-de-lis as a blank group and utilizes a MnSO4 solution to respectively stress experimental groups of fleur-de-lis for 1 month and 2 months. In situ manganese-enriched biochars are acquired through pyrolysis under N2 atmosphere after harvesting treatment; the biochars are respectively named as BC-L0, BC-L1, BC-L2, BC-R0, BC-R1 and BC-R2 on the basis of collection parts; Rhodamine B is taken as a probe molecule for researching influences of conditions of pyrolysis temperature (500 DEG C, 700 DEG C and 900 DEG C) and pyrolysis time (0.5 h, 1 h and 2 h) andthe like on adsorption capacity of biochars, and screening the preparation conditions when the adsorption capacity of biochars is optimal; SEM, EDS, XRD, AAS and the like are adopted for physically representing biochars, and meanwhile establishing a Fenton-like system and researching the catalytic capacity of the manganese-enriched biochars; a biochar particle modified glassy carbon disc electrodeis utilized to research electrocatalytic reduction reaction of H2O2 in neutral medium on different biochar catalysts through a cyclic voltammetry scanning method, so as to represent electro-catalyticperformances of different biochars.

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 Applications(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
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