Ultraviolet catalytic pretreatment method for degradation-resistant biomass

A biomass and ultraviolet light technology, applied in the field of ultraviolet photocatalytic pretreatment of refractory biomass, can solve the problems of complex treatment and high cost of biomass treatment, achieve high reaction efficiency, solve the problem of nutrient source, and reduce the overall cost Effect

Inactive Publication Date: 2016-09-28
ANHUI XINSHENGLI BIOLOGY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an ultraviolet photocatalytic pretreatment method for refractory biomass, through the simultaneous occurrence of catalytic cracking, photocatalytic oxidation, homogeneous catalytic oxidation, etc. Some refractory biomass treatment costs are high and complex issues are dealt with

Method used

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Embodiment Construction

[0022] The technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0023] A concrete step of this embodiment is:

[0024] (1) according to mass percentage proportioning, the described active ingredient comprises transition metal oxide MxOy0.1Kg (10%), CeO20.15Kg (15%), ZrO20.2Kg (20%), gamma-Al2O30.2Kg ( 20%), TiO20.2Kg (20%), clay SiO20.15Kg (15%), wherein the transition metal oxide MxOy is CuO;

[0025] (2) After mixing the powder weighed in the process (1), mix it with water and add it to the ball mill in a wet ball mill. min, ball milled for 10 hours to make it evenly mixed;

[0026] (3) Take out and mix the p...

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Abstract

The invention discloses an ultraviolet photocatalytic pretreatment method for refractory biomass. Including biomass structure treatment and tempering treatment, the prepared biomass suspension or wastewater concentrate is added to the ultraviolet photocatalytic reactor, then 1‑10g / L oxidant is added, and 0.1‑0.8MPa compressed air is introduced for exposure Gas stirring, and then microwave excitation electrodeless ultraviolet lamp to generate ultraviolet light, under the synergistic effect of microwave, ultraviolet light, catalyst and oxidant, carry out catalytic pretreatment on biomass suspension or biomass in wastewater. In the present invention, multiple functions such as catalytic cracking, photocatalytic oxidation, and homogeneous catalytic oxidation occur simultaneously in the microwave electrodeless ultraviolet photocatalyst system, and the reaction efficiency is high, and the oxidation stage can be controlled by controlling the pretreatment conditions, so that the treated biomass is suitable for The use of microorganisms is green and environmentally friendly.

Description

technical field [0001] The invention belongs to the technical field of biomass degradation, in particular to an ultraviolet photocatalytic pretreatment method for refractory biomass. Background technique [0002] Cellulosic and lignocellulosic feedstocks and wastes are the most common renewable biomass feedstocks from a wide range of sources, and conventional pretreatment methods include chemical, mechanical, and enzymatic methods. Elshafei A. et al. (Bioresource Tech. (1991) 35:73-80) used NaOH to pretreat corn stover. Kim, T and Y Lee (Bioresource Tech, (2005) 96:2007-2013) used a large amount of ammonia to pretreat corn stover straw. [0003] Organic wastewater is also a kind of biomass source. With the development of industry, the discharge of pollutants is increasing day by day, and most of the discharged wastewater is composed of complex components and high concentrations of refractory biodegradable substances, which brings great harm to the ecological environment and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/00C02F9/08B09B3/00
CPCC02F11/00B09B3/00C02F1/281C02F1/283C02F1/302C02F1/32C02F1/5236C02F1/66C02F1/722C02F1/76C02F1/78C02F9/00C02F2201/3227
Inventor 方许
Owner ANHUI XINSHENGLI BIOLOGY TECH
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