A method for removing rhodamine b dye in wastewater by walnut shell biochar adsorbent
A technology of biomass charcoal and walnut shells, which is applied in the direction of adsorption of water/sewage treatment, chemical instruments and methods, and other chemical processes. It can solve the problems of waste of resources, environment, incineration or discarding, and difficulty in recycling fruit shells, etc., and achieve good adsorption. performance effect
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
preparation example Construction
[0023] Sorbent preparation
[0024] Take a certain amount of commercially available common walnut shells, wash them with tap water, dry them, crush them, and sieve them to 300-600 μm, mix the crushed walnut shells and zinc chloride solution according to the mass of walnut shells (g): the mass of zinc chloride solution (g) mixed and impregnated in a conical flask with a ratio of 1:6, in which the concentration of zinc chloride solution was 30%, and then heated by 560W microwave for 15 minutes, and the obtained walnut shell biochar was pickled with 10% hydrochloric acid, Wash with distilled water until the pH is neutral, and dry to obtain adsorbent A.
[0025] Take a certain amount of commercially available common walnut shells, wash them with tap water, dry them, crush them, and sieve them to 300-600 μm, mix the crushed walnut shells and zinc chloride solution according to the mass of walnut shells (g): the mass of zinc chloride solution (g) mixed and impregnated in a conical ...
Embodiment 1
[0030] Take adsorbent B and sodium chloride and add the pH value of the solution to 2, 4, 7, 9, respectively, in the rhodamine B solution of 650mg / L, wherein every 0.05g of adsorbent B corresponds to 2.5g of sodium chloride and 50mL of rhodamine B After the solution was stirred or shaken at 25°C for 6 hours, it was separated by filtration, and the filtrate was adjusted to neutrality before being discharged.
[0031] The effect of different initial pH on the removal effect of rhodamine B is as follows: figure 1 Shown, along with the raising of pH, the adsorption value of adsorbent B to rhodamine B increases thereupon, illustrate that the method for removing rhodamine B of the present invention is applicable to the treatment of alkaline wastewater, and the higher the pH, the better the treatment effect it is good.
Embodiment 2
[0033] Take adsorbent C and add it to pH=4.0, 600mg / L rhodamine B solution, wherein every 0.15g of adsorbent C corresponds to 50mL rhodamine B solution, and add sodium chloride at the same time so that the percentage mass concentration is 0%, 2%, respectively. 5%, 10%, 15%, 30%, after stirring or shaking at 45°C for 8 hours, filter and separate, adjust the filtrate to neutral and discharge.
[0034] The effect of sodium chloride concentration on the removal effect of rhodamine B is as follows: figure 2 shown. Depend on figure 2 It can be seen that the presence of sodium chloride is very beneficial to the removal of Rhodamine B. From figure 2 It can also be found that when the concentration of sodium chloride is between 2% and 30%, there is basically no difference in the adsorption amount of rhodamine B by adsorbent C.
PUM
| Property | Measurement | Unit |
|---|---|---|
| adsorption capacity | aaaaa | aaaaa |
| adsorption capacity | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More