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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 catalytic pretreatment method for degradation-resistant biomass. The method comprises the steps of structural treatment and nature regulation of the biomass. Prepared biomass suspension slurry or wastewater concentrated liquor is added into an ultraviolet catalytic reactor, then 1-10 g / L of oxidant is added, 0.1-0.8 MPa of compressed air is introduced for aeration and stirring, an electrodeless ultraviolet lamp is stimulated to emit ultraviolet light through microwaves, and the biomass in the biomass suspension slurry or wastewater is subjected to catalytic pretreatment under the synergetic action of the microwaves, the ultraviolet light and a catalyst. According to the method, multiple actions such as catalytic cracking, photo-catalytic oxidation and homogeneous catalytic oxidation occur simultaneously in a microwave electrodeless ultraviolet light catalyst system, so that reaction efficiency is high; the oxidation stage can be controlled by controlling pretreatment conditions, so that the treated biomass is suitable for microorganism utilization, and environment friendliness is achieved.

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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