Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of preparation method and application of bamboo-based biochar phosphorus removal adsorbent

A phosphorus adsorbent, biochar technology, applied in chemical instruments and methods, adsorbed water/sewage treatment, water pollutants, etc., can solve the problems of poor selectivity, low adsorption capacity, limited economic value, etc., to reduce the preparation cost, The effect of high saturated adsorption capacity and high removal rate

Active Publication Date: 2022-05-03
INST OF URBAN ENVIRONMENT CHINESE ACAD OF SCI +1
View PDF15 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, bamboo charcoal is often used for harmful gas adsorption, such as formaldehyde adsorption in cars or houses, etc., but its economic value is limited, and its practical application in the field of sewage treatment is seldom, because bamboo charcoal can only physically adsorb pollutants in sewage. Combined, low adsorption capacity and poor selectivity

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of preparation method and application of bamboo-based biochar phosphorus removal adsorbent
  • A kind of preparation method and application of bamboo-based biochar phosphorus removal adsorbent
  • A kind of preparation method and application of bamboo-based biochar phosphorus removal adsorbent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] The preparation method of present embodiment bamboo-based biochar dephosphorization adsorbent comprises the following steps:

[0042] Bamboo is crushed into bamboo chips with a particle size of ≤1.5 mm, and 10 g of bamboo chips are added to 0.3 mol / L (acetic acid) in 2 L of acetic acid-ethanol-water solution (the volume ratio of ethanol to water is 3:1) and mechanically stirred for 5 hours, then washed Filter and dry at 100°C. Mix the dried bamboo chips with 10L of clean seawater and stir for 10h. Then wash and filter with water until the filtrate is detected by silver nitrate and does not produce white precipitate, that is, there is no chloride ion in the filtrate, indicating that the sample is washed clean, and then dried at 160 ° C, and finally in argon atmosphere and 850 ° C tube type Calcined in a furnace for 30 minutes to obtain a modified bamboo-based biochar phosphorus removal adsorbent, marked as ZS850.

Embodiment 2

[0044] The difference between this example and Example 1 is that the calcination temperature of Example 2 is 650° C., and the others are the same as Example 1. The obtained modified bamboo-based biochar dephosphorization adsorbent is marked as ZS650.

Embodiment 3

[0046] The difference between this example and Example 1 is that the calcination temperature of Example 3 is 750° C., and the others are the same as Example 1. The obtained modified bamboo-based biochar dephosphorization adsorbent is marked as ZS750.

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
particle diameteraaaaaaaaaa
pore sizeaaaaaaaaaa
specific surface areaaaaaaaaaaa
Login to View More

Abstract

The invention belongs to the technical field of adsorption materials, and in particular relates to a preparation method and application of a bamboo-based biochar phosphorus removal adsorbent. The preparation method comprises the following steps: S1: crushing bamboo into bamboo chips, then soaking in acetic acid solution, filtering and drying; S2: fully mixing and stirring the dried bamboo chips with seawater, washing with water and filtering until the filtrate There is no chloride ion in the mixture, then dried, and finally placed in a tube furnace and calcined at a high temperature under an inert atmosphere to obtain a bamboo-based biochar phosphorus removal adsorbent. The adsorbent prepared by the simple method of the invention is loaded with high content of CaO and MgO, has high specific surface area and high saturated adsorption capacity, and has extremely high removal rate for phosphorus.

Description

technical field [0001] The invention belongs to the technical field of adsorption materials, and in particular relates to a preparation method and application of a bamboo-based biochar phosphorus removal adsorbent. Background technique [0002] With the rapid development of economy and society, industrial pollution is becoming more and more serious. Eutrophication of water body has become one of the most serious water pollution problems, which seriously affects the growth of aquatic biological populations and the aesthetics of the environment. In order to curb further eutrophication of water body pollution , it is necessary to control the inflow of exogenous phosphorus such as domestic sewage, industrial wastewater and initial rainwater and the release of endogenous phosphorus, and use adsorption materials to effectively remove phosphorus in water bodies and wetlands. [0003] At present, the commonly used phosphorus removal methods include chemical phosphorus removal method...

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 Patents(China)
IPC IPC(8): B01J20/20B01J20/28B01J20/30C02F1/28
CPCB01J20/20B01J20/28061B01J20/3078C02F1/283B01J2220/485C02F2101/105
Inventor 李建荣郭建兵肖航
Owner INST OF URBAN ENVIRONMENT CHINESE ACAD OF SCI