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A kind of preparation method of wood-based solar energy seawater desalination material

A solar and wood-based technology, applied in the field of solar seawater desalination, can solve the problems of limited large-scale application, complex preparation process, expensive price, etc., and achieve excellent thermal insulation performance, high solar energy absorption rate, and lightweight structural thermal insulation performance Effect

Active Publication Date: 2022-07-01
CHINA UNIV OF MINING & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the high price and complex preparation process of these materials limit their large-scale application

Method used

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  • A kind of preparation method of wood-based solar energy seawater desalination material
  • A kind of preparation method of wood-based solar energy seawater desalination material
  • A kind of preparation method of wood-based solar energy seawater desalination material

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Embodiment 1

[0024] A preparation method of wood-based solar energy desalination seawater material, comprising the following steps:

[0025] (a) Cut the wood transversely along the growth direction, and the cutting size is 3cm×3cm×1cm (longitudinal × tangential × radial);

[0026] (b) ultrasonically cleaning the cut wood sample with deionized water for 15min, and then soaking it in a dilute sulfuric acid solution with a concentration of 1mol / L for 10min;

[0027] (c) directly immersed in potassium permanganate solution with a concentration of 0.2mol / L after taking out, the immersion time is 30min, then transferred to a constant temperature water bath and heated for 1h at a heating temperature of 60°C;

[0028] (d) After heating, take out the wood sample, wash the excess potassium permanganate on the surface and the potassium salt generated by the reaction with ethanol and deionized water respectively, and dry in a vacuum drying oven at a drying temperature of 40 °C and a drying time of 12 ...

Embodiment 2

[0032] A preparation method of wood-based solar energy desalination seawater material, comprising the following steps:

[0033] (a) Cut the wood transversely along the growth direction, and the cutting size is 3cm×3cm×1cm (longitudinal × tangential × radial);

[0034] (b) ultrasonically cleaning the cut wood samples with deionized water for 20 minutes, and then soaking them in a dilute sulfuric acid solution with a concentration of 0.1 mol / L for 30 minutes;

[0035] (c) after taking out, directly soak in potassium permanganate solution with a concentration of 0.1mol / L, soaking time is 40min, then transfer to constant temperature water bath and heat for 1h, heating temperature is 70℃;

[0036] (d) After heating, take out the wood sample, wash the excess potassium permanganate on the surface and the potassium salt generated by the reaction with ethanol and deionized water respectively, and dry in a vacuum drying oven at a drying temperature of 60 °C and a drying time of 6 h . ...

Embodiment 3

[0039] A preparation method of wood-based solar energy desalination seawater material, comprising the following steps:

[0040] (a) Cut the wood transversely along the growth direction, and the cutting size is 3cm×3cm×1cm (longitudinal × tangential × radial);

[0041] (b) ultrasonically cleaning the cut wood sample with deionized water for 25min, and then soaking it in a dilute sulfuric acid solution with a concentration of 0.5mol / L for a soaking time of 20min;

[0042] (c) after taking out, directly immersed in potassium permanganate solution with a concentration of 0.02mol / L, the immersion time is 60min, then transferred to a constant temperature water bath and heated for 2h, and the heating temperature is 80°C;

[0043] (d) After heating, take out the wood sample, wash the excess potassium permanganate on the surface and the potassium salt generated by the reaction with ethanol and deionized water respectively, and dry in a vacuum drying oven at a drying temperature of 80 °...

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Abstract

The invention discloses a preparation method of a wood-based solar energy seawater desalination material. The steps are as follows: cutting wood transversely along the growth direction; then ultrasonically cleaning it with deionized water for 15-25 minutes, and then soaking it in a dilute sulfuric acid solution for 10-30 minutes ; After taking out, soak the wood sample in potassium permanganate solution for 30-60min, and then heat it at 60-80°C for 1-2h; after heating, take out the wood sample and wash until the filtrate is neutral , drying to obtain a wood-based solar water desalination material with black manganese dioxide deposited on the surface. The invention uses wood cut laterally along the growth direction as the raw material, and has the advantages of light weight, good hydrophilicity, low cost, etc.; at the same time, it also has natural water transportation channels, high light-to-heat conversion efficiency, and can fully utilize solar energy to achieve high efficiency. Seawater desalination can be directly applied to large-scale industrial production and market promotion.

Description

technical field [0001] The invention relates to the technical field of solar seawater desalination, in particular to a preparation method of a wood-based solar energy seawater desalination material. Background technique [0002] The shortage of fresh water resources is a serious problem facing the world. Over the past few years, many methods have been widely developed to improve access to clean water, such as membrane filtration or distillation processes and reverse osmosis technology. However, the adoption of these technologies results in a large amount of energy consumption and greenhouse gas emissions in the water treatment process, causing enormous pressure on energy and the environment. Solar energy is an abundant renewable energy, only 0.1% of the total solar energy can meet the global energy consumption for one year. As a sustainable green technology, solar powered water evaporation system is considered as one of the most effective ways to solve the shortage of fres...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/14C02F103/08
CPCC02F1/14C02F2103/08Y02A20/212
Inventor 黄丛亮李东升
Owner CHINA UNIV OF MINING & TECH
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