Biomass adsorbent prepared by acid hydrolysis

A biomass adsorbent and biomass technology, applied in the direction of adsorption of water/sewage treatment, water pollutants, water/sludge/sewage treatment, etc., can solve problems such as polluting the atmosphere, wasting energy, endangering the health of the people, and achieving The effect of low cost, simple preparation process and abundant reserves

Inactive Publication Date: 2008-11-19
ZHEJIANG UNIV
View PDF0 Cites 26 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, more than 600 million tons of agricultural straw are produced in my country every year, about 80% of which are discarded or burned, which not only wastes a lot of en

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] (1) dry and pulverize the waste biomass of stalks, and sieve 20 orders;

[0019] (2) Add 100 g of sieved waste biomass to the reactor, add 1 L of 0.5 mol / L hydrochloric acid solution, and acidify at 70 °C for 1 hour, and the treated product is washed, filtered, dried, Crush and sieve to 20 meshes to obtain the biomass adsorbent SB-1.

Embodiment 2

[0021] (1) drying and pulverizing the waste biomass of stalks, and sieving through 100 orders;

[0022] (2) Add 100 g of sieved waste biomass to the reactor, add 10 L of 6.0 mol / L hydrochloric acid solution, and acidify it at 100 ° C for 6 hours. The processed product is washed, filtered, dried, Pulverize and sieve to 100 meshes to obtain the biomass adsorbent SB-2.

Embodiment 3

[0024] (1) dry and pulverize the waste biomass of stalks, and sieve 50 orders;

[0025] (2) Add 100 g of sieved waste biomass to the reactor, add 4 L of 3.0 mol / L hydrochloric acid solution, and acidify at 100 ° C for 12 hours. The processed product is washed, filtered, dried, Crush and sieve to 50 meshes to obtain the biomass adsorbent SB-3.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses an acidolysis prepared biomass adsorbent which comprises the following steps: firstly, waste biomass is dried, crushed, and screened from 20-mesh to 80-mesh; secondly, the screened waste biomass is put into a reactor, hydrochloric acid solution of 0.5-6.0 mol/L is added, and the weight percentage of the biomass is 1 to 10 percent; thirdly, the acidolysis lasts for 1 to 12 hours at 70-100 DEG C, and the processed product is washed, filtered, dried, crushed and screened from 20-mesh to 100-mesh, thereby preparing the biomass adsorbent; fourthly, the prepared biomass adsorbent is used for removing persistent organic pollutants in waste water or drinking source water, and the processed biomass adsorbent is regenerated and recycled at 200-400 DEG C and under the restrictive oxygen condition. The acidolysis prepared biomass adsorbent belongs to the second reclamation of the agricultural byproduct waste, and has the remarkable advantages that the prepared material comes from the nature, the reserves are rich, no toxic action exists, the preparation flow is simple, the cost is low, the purification efficiency of the adsorption material is obvious, and the recovery and the reuse after the adsorption treatment are easy.

Description

technical field [0001] The invention relates to an adsorbent, in particular to an acid hydrolysis preparation of a biomass adsorbent. Background technique [0002] Along with economic development, my country's organic micro-pollution (such as PAHs, PCBs, aromatic nitro compounds) is becoming more and more serious. Among them, trace organic pollutants often have high bioaccumulation and "three causes" effects, and the current treatment technology It is difficult to effectively remove such organic pollutants, which pose a serious threat to human health. It has become one of the focuses in the field of environmental science and engineering to find new cost-effective adsorbents suitable for organic pollution treatment, which involve activated carbon, organoclay, triolein-activated carbon composite adsorbent, etc., but are environmentally friendly. The development and application of biosorbents are almost nonexistent. [0003] Biosorbent (biosorbent) was first used to adsorb hea...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): B01J20/30C02F1/28C02F101/30
Inventor 陈宝梁李云桂陈再明
Owner ZHEJIANG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap