Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Biomass arsenic removal material and preparation method thereof

A biomass and biomass fiber technology, applied in chemical instruments and methods, water pollutants, other chemical processes, etc., can solve the problems of low removal efficiency of physical methods, long cycle of biological methods, etc., and achieve low cost, high activity and high efficiency. High adsorption and removal rate

Inactive Publication Date: 2019-04-30
NANJING FORESTRY UNIV
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The prior art adopts physical and biological methods for the removal of arsenic in water bodies, but the removal efficiency of physical methods is low and the cycle of biological methods is long. In comparison, chemical methods have the advantages of high efficiency, short cycle and economy. The present invention The preparation of biomass arsenic removal materials based on chemical methods effectively solves the problems encountered by physical and biological methods

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

[0023] a) Press NaNO 3 solution and FeCl 3 The solute molar ratio of the solution is 8:1. After the mixed solution and cotton fiber are dispersed uniformly by ultrasound for 35 minutes, they are transferred to the reaction kettle and reacted at 100°C for 11 hours, cooled, filtered, and deionized water and After washing with absolute alcohol three times, the samples were dried at 50°C to obtain fiber solids loaded with iron oxyhydroxide.

[0024] b) According to absolute alcohol and H 2 The volume ratio of O is 7:1. After adding the fiber solid loaded with ferric oxyhydroxide into the alcohol solution, add ammonia water and tetraethyl orthosilicate at a volume ratio of 6:1, and stir magnetically for 4 hours at room temperature, and the stirring speed is 600r / min, filter, wash with deionized water and absolute alcohol three times respectively, and dry the sample at 50°C to obtain a fiber solid coated with silica.

[0025] c) Under a hydrogen atmosphere, the silica-coated fibe...

Embodiment 2

[0027] a) Press NaNO 3 solution and FeCl 3 The solute molar ratio of the solution is 9:1. After the mixed solution and the ramie fiber are dispersed uniformly by ultrasound for 40 minutes, they are transferred to the reaction kettle and reacted at 80°C for 15 hours. After cooling, filtering, and using deionized water and The samples were washed four times with absolute alcohol, and the samples were dried at 55°C to obtain fiber solids loaded with iron oxyhydroxide.

[0028] b) According to absolute alcohol and H 2 The volume ratio of O is 5:1. After adding the fiber solid loaded with iron oxyhydroxide into the alcohol solution, add ammonia water and tetraethyl orthosilicate at a volume ratio of 7:1, and stir magnetically for 5 hours at room temperature, and the stirring speed is 700r / min, filter, wash with deionized water and absolute alcohol for 4 times respectively, and dry the sample at 55°C to obtain a fiber solid coated with silica.

[0029] c) Under the hydrogen-argon...

Embodiment 3

[0031] a) Press NaNO 3 solution and FeCl 3 The solute molar ratio of the solution is 5:1. After the mixed solution and jute fiber are dispersed uniformly by ultrasonication for 60 minutes, they are transferred to the reaction kettle and reacted for 10 hours at 110 ° C. After cooling, filtering, and using deionized water and The samples were washed with absolute alcohol for 5 times, and the samples were dried at 30°C to obtain fibrous solids loaded with iron oxyhydroxide.

[0032] b) According to absolute alcohol and H 2 The volume ratio of O is 9:1. After adding the fiber solid loaded with iron oxyhydroxide into the alcohol solution, add ammonia water and tetraethyl orthosilicate at a volume ratio of 10:1, and stir magnetically for 6 hours at room temperature, and the stirring speed is 500r / min, filter, wash with deionized water and absolute alcohol for 5 times respectively, and dry the sample at 30°C to obtain a fiber solid coated with silica.

[0033] c) Under a hydrogen ...

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

PropertyMeasurementUnit
diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a biomass arsenic removal material and a preparation method thereof. The biomass arsenic removal material contains a biomass fiber as a substrate, an arsenic-removing active component zero-valent iron as a middle layer and silica as a protective layer, the zero-valent iron is distributed on the surface of the biomass fiber in an array manner, and the surface of the zero-valent iron is coated with the silica. The diameter of the biomass fiber in the material is 5-30 [mu]m, the particle size of the zero-valent nano-iron is 10-100 nm, and the thickness of the silica layeris 20-200 nm, wherein a mass ratio of the biomass fiber to the zero-valent nano-iron is (10-1):1, and a mass ratio of the silica layer to the zero-valent nano-iron is (0.5-1):1. The biomass arsenic removal material can improve the removal rate of arsenic in water, reduce the cost and reduce the pollution to the environment, is a promising new biomass material, has potential economic, social and environmental benefits, and can be applied to the removal of arsenic in water.

Description

technical field [0001] The invention relates to a biomass material for removing arsenic and a preparation method thereof, belonging to the technical field of biomass material preparation. Background technique [0002] Arsenic is a toxic environmental pollutant that is released to the environment through the mining and smelting of arsenic-containing metals, the burning of coal, the application of arsenic-containing pesticides, and the manufacture of glass, paint, and paper. Arsenic generally exists in the form of trivalent arsenic and pentavalent arsenic. Trivalent arsenic is often more toxic than other arsenic compounds. Once released into the surrounding environment, it not only pollutes water, air and soil, but also enriches through the food chain. Human health poses a huge threat. At present, arsenic and inorganic arsenic compounds have been included in the list of carcinogens issued by the International Agency for Research on Cancer (ARC), so they must be removed before...

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
Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/24B01J20/30C02F1/28C02F101/10
CPCB01J20/103B01J20/24C02F1/281C02F1/286C02F2101/103
Inventor 刘慧李萍萍邱凤仙张涛俞汉强蒋苏丹
Owner NANJING FORESTRY UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com