A kind of biochar modification method of garden waste
A technology of garden waste and biochar, applied in the field of biochar modification, can solve problems such as limited adsorption performance, achieve the effects of reducing wastewater treatment costs, simple operation, and improving wastewater removal capacity
Active Publication Date: 2021-07-02
XIAN UNVERSITY OF ARTS & SCI
View PDF5 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] The purpose of the present invention is to solve the shortcomings of the limited adsorption performance of garden waste biochar in the prior art, and propose a method for modifying garden waste biochar
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment
[0022] Embodiment: a kind of garden waste biochar modification method comprises the following steps:
[0023] S1. Add 100g of sycamore deciduous garden biochar into the crusher for crushing to obtain powder, filter the powder through an 80-mesh screen to obtain sieved matter, and transfer the unfiltered matter back to the crusher for crushing again until the garden biochar All pass through the sieve and set aside;
[0024] S2, the pretreatment of garden biochar: the garden biochar is cleaned and dried to obtain garden biochar I, the garden biochar I is soaked with 200ml of phosphoric acid solution with a mass percentage concentration of 40% for 2 hours, then suction filtered , and use 1000ml deionized water to clean the garden biochar I until the pH of the cleaned filtrate is the same as the pH of the deionized water, and dry the garden biochar I to obtain the garden biochar II for subsequent use;
[0025] S3. Modification treatment of garden biochar: use 1500ml of ferrous su...
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
| Property | Measurement | Unit |
|---|---|---|
| specific surface area | aaaaa | aaaaa |
| specific surface area | aaaaa | aaaaa |
Login to View More
Abstract
The invention discloses a method for modifying garden waste biomass charcoal, S1, crushing garden biomass charcoal through a screen; S2, pretreatment of garden biomass charcoal; S3, modification treatment of garden biomass charcoal: using Ferrous sulfate solution Stir and immerse the garden biochar II in a constant temperature water bath for 10h‑12h, filter with suction, wash the garden biochar II with deionized water until the pH of the filtrate is the same as that of the deionized water, then add potassium hydroxide solution After stirring and immersing for 1h-2h, suction filter, clean the garden biochar II with deionized water until the pH of the filtrate is the same as that of the deionized water, and obtain the modified garden biochar after drying. In the present invention, by adopting chemical modification Activation method, the pore structure and oxygen-containing functional groups of the pretreated garden biochar were modified, and the prepared garden biochar had significantly more pores, specific surface area, and oxygen-containing functional groups. The removal ability of garden biochar to wastewater containing methylene blue was significantly improved.
Description
technical field [0001] The invention relates to the technical field of biochar modification, in particular to a method for modifying garden waste biochar. Background technique [0002] Garden waste biochar can be used in water purification, soil heavy metal pollution remediation and soil improvement, but its adsorption performance is limited. Modification methods such as oxidation and reduction modification can significantly change the surface properties of biochar, such as enriching the pores of biochar, increasing the specific surface area, and increasing the number of characteristic functional groups. These characteristics are beneficial to the biochar in water pollution. The efficiency of treatment by adsorption method; Wang Yueying found that pickling treatment can change the functional groups on the surface of biomass charcoal, thereby improving its adsorption performance; Li Kunquan used KOH to modify Spartina alterniflora stalks and cotton stalks, and the modified bi...
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
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/20B01J20/28B01J20/32C02F1/28C02F101/30
CPCB01J20/20B01J20/28054B01J20/28061B01J20/3234B01J2220/4825C02F1/281C02F2101/308
Inventor 申圆圆林倩麻李娜郝恒星李乐刘田田王雪梅
Owner XIAN UNVERSITY OF ARTS & SCI