Wastewater Adsorbent for Ternary Precursor Purification
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Solution Overview
Problem
The existing synthesis processes for ternary cathode materials generate wastewater contaminated with ammonium salts, sulfates, and organic extractants, which are difficult to treat due to high water consumption and residual impurities, leading to increased production costs and wastewater treatment challenges.
Innovation Solution
A wastewater adsorbent is developed through a method involving the modification of carbon black powder with ammonium salts and mixing with nickel-cobalt-manganese-sodium mixed salts, followed by compaction and heating to create a multi-metal-carbon-based adsorbent, which is used to treat ternary precursor wastewater by adsorption and desorption, allowing for repetitive use and efficient removal of contaminants.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If multiple pressure filtration and washing are used to remove ammonium salts, sulfates, and organic extractants, then the concentration of impurities in the ternary precursor is reduced, but water consumption increases and wastewater treatment cost increases
Solution Approach 1:
The patent extracts and removes harmful impurities (ammonium salts, sulfates, organic extractants) from the wastewater stream using a specialized adsorbent material, separating them from the water to enable reuse or safe disposal, thereby reducing overall water consumption while maintaining product purity
Solution Approach 2:
The patent changes the physical and chemical parameters of the wastewater by introducing an adsorbent material with specific surface properties and pore structures, transforming the impurity removal mechanism from physical filtration to adsorption, which allows for more efficient removal with less water
2Manufacturing precision
If multiple pressure filtration and washing are used to remove ammonium salts, sulfates, and organic extractants, then the purity of ternary precursor is improved, but the cost of wastewater treatment increases
Solution Approach 1:
The patent extracts and removes harmful impurities (ammonium salts, sulfates, organic extractants) from the wastewater stream using a specialized adsorbent material, separating them from the water to enable reuse or safe disposal, thereby reducing overall water consumption while maintaining product purity
Solution Approach 2:
The patent changes the physical and chemical parameters of the wastewater by introducing an adsorbent material with specific surface properties and pore structures, transforming the impurity removal mechanism from physical filtration to adsorption, which allows for more efficient removal with less water
3Quantity of substance
If the number of times for washing is increased, then the concentration of ammonium salts, sulfates, and organic extractants in wastewater is reduced, but deep removal becomes difficult to achieve
Solution Approach 1:
The patent extracts and removes harmful impurities (ammonium salts, sulfates, organic extractants) from the wastewater stream using a specialized adsorbent material, separating them from the water to enable reuse or safe disposal, thereby reducing overall water consumption while maintaining product purity
Solution Approach 2:
The patent changes the physical and chemical parameters of the wastewater by introducing an adsorbent material with specific surface properties and pore structures, transforming the impurity removal mechanism from physical filtration to adsorption, which allows for more efficient removal with less water
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The adsorbent exhibits high stability and adsorption capacity for various ions, significantly reducing production costs and enabling effective deep removal of ammonium salts, sulfates, and organic extractants from wastewater, with the ability to be reused, thus minimizing material waste and treatment costs.
Implementation Method 1
The adsorbent exhibits high stability and adsorption capacity for various ions, significantly reducing production costs and enabling effective deep removal of ammonium salts, sulfates, and organic extractants from wastewater
Implementation Method 2
mixing the nickel-cobalt-manganese-sodium mixed salt, ammonium salt modified carbon black and a binding agent, compacting, drying and heating to obtain a multi-metal-carbon-based adsorbent
Data Source
AI summary
Disclosed in the present invention are a wastewater adsorbent, and a preparation method therefor and the use thereof. The method comprises: mixing a carbon black powder and an ammonium salt solution, heating same for a hydrothermal reaction, followed by filtering, and washing the obtained filter residues with acid to obtain an ammonium-salt-modified carbon black; mixing and grinding a nickel-cobalt-manganese mixed salt and a sodium salt to obtain a mixture, mixing the mixture with an organic acid solution, evaporating same to remove water, subjecting same to a heating reaction in an inert atmosphere, and subjecting the reacted material to acid pickling to obtain a nickel-cobalt-manganese-sodium mixed salt; and mixing the nickel-cobalt-manganese-sodium mixed salt, the ammonium-salt-modified carbon black and a binding agent, and compacting, drying and heating same to obtain a multimetal-carbon-based adsorbent.