Preparation method of undisturbed leersia hexandra heavy-metal bio-adsorbent
A biosorbent, heavy metal technology, applied in chemical instruments and methods, adsorption water/sewage treatment, water/sludge/sewage treatment, etc., can solve problems such as limitations, and achieve the effect of good adsorption effect
Inactive Publication Date: 2015-06-24
GUILIN UNIVERSITY OF TECHNOLOGY
View PDF0 Cites 7 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
At present, effective separation processes for removing heavy metals include precipitation, ion exchange, electrochemical treatment, membrane technology, evaporation and solidification, etc., but the application of these technologies is limited by technology and economy
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
[0018] one, Undisturbed Lishihe heavy metal biosorbent Preparation of:
[0019] (1) Rinse the leaves of Lishihe with tap water for 3 times, and then with ultrapure water for 3 times.
[0020] (2) Put 500 g of Lishihe leaves obtained in step (1) into a cowhide file bag, dry them in a blast drying oven at 80°C for 24 hours, then crush them with a high-speed pulverizer, and pass through a 100-mesh sieve after crushing.
[0021] (3) Put the product obtained in step (2) into a 50mL ceramic crucible, place it in a muffle furnace at 100°C for 6 hours, take it out after natural cooling, and obtain the original Lishihe heavy metal biosorbent.
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
Login to View More Abstract
The invention discloses a preparation method of an undisturbed leersia hexandra heavy-metal bio-adsorbent. The preparation method comprises the following steps: (1) washing leaves of leersia hexandra for three times by using tap water, and then washing the leaves for three times by using ultrapure water; (2) putting the leaves of leersia hexandra obtained in the step (1) into a kraft file pocket, putting the kraft file pocket into an air dry oven at the temperature of 80 DEG C, drying for 24 hours, then crushing the leaves by using a high-speed crusher, and sieving the obtained object by using a 100-mesh sieve; and (3) putting the object obtained in the step (2) into a ceramic crucible, putting the ceramic crucible into a muffle furnace at the temperature of 100 DEG C for 6 hours, carrying out natural cooling on the obtained product and then taking out the product, thus obtaining the undisturbed leersia hexandra heavy-metal bio-adsorbent. According to the preparation method, a material for absorbing heavy metals in polluted water is prepared by fully using a field weed leersia hexandra, and the material has a good adsorption effect on Cr (VI) in acidic, neutral and alkaline water environments. Meanwhile, the adsorption material prepared by using the method disclosed by the invention also has a good adsorption effect on heavy metals such as Cr (III), Pb, Zn, Mn, Ni and Cd.
Description
technical field [0001] The invention relates to the field of heavy metal wastewater treatment, in particular to a preparation method of an undisturbed Lishihe heavy metal biosorbent. Background technique [0002] With the rapid development of my country's economy, heavy metal wastewater is produced in many production processes in industries such as mining and metallurgy, machinery manufacturing, chemical industry, electronics, and instrumentation. Heavy metal wastewater has the characteristics of strong toxicity, refractory degradation, easy enrichment, carcinogenicity, and mutagenicity. It is the focus and difficulty of wastewater treatment. At present, effective separation processes for removing heavy metals include precipitation, ion exchange, electrochemical treatment, membrane technology, evaporation and solidification, etc., but the application of these technologies is limited by technology and economy. [0003] Biosorption method refers to the method of using the che...
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 Applications(China)
IPC IPC(8): B01J20/20B01J20/30C02F1/28C02F1/62C02F1/64
Inventor 张学洪张杏锋程志刚
Owner GUILIN UNIVERSITY OF TECHNOLOGY