Application Cases

With the increasing frequency of industrial activities and human endeavors, the rate of clean water regeneration has been outpaced by the rate of water pollution. Large quantities of organic compounds can be detected in polluted water resources, and the concentration of heavy metals in wastewater is also on the rise. Electro-adsorption is an emerging, energy-efficient, and easy-to-operate water treatment technology. Its fundamental principle is similar to the energy storage principle of electrochemical capacitors. Based on electrochemistry, it combines traditional physical adsorption with electrochemical methods using various adsorptive electrodes. In recent years, it has attracted the interest of many researchers because it is a robust, energy-saving, and cost-effective process.

The ATA-3000 and 300 series power amplifiers from Aigtek can provide stable and adjustable voltage outputs, ensuring the accuracy and reliability of experiments. They can also amplify low-frequency, low-level voltage signals with arbitrary waveforms with low distortion to meet the signal strength requirements of electrochemical experiments.

Experiment Name: Testing of Electro-Adsorption and Catalytic Performance

Experiment Principle:

The adsorption device consists of two highly porous electrodes separated by a water channel, with a salt solution flowing between the two electrodes. Carbon-based materials are typically used as electrode materials. Depending on the setup, water is either charged between the electrodes or flows through the charged electrodes. When the porous electrodes are charged by an applied voltage difference, the anions and cations present in the feed solution migrate along the pore surfaces to the oppositely charged electrode layers, resulting in electro-adsorption at the carbon/feed interface and the removal and separation of ions from the feed water.

Experimental Block Diagram:

Experimental Photograph:

Experimental Process:

A single-chamber cell was constructed, containing an asymmetric electrode in a typical two-electrode system. The prepared carbon-based electrode materials (polypyrrole/carbon felt electrode, graphene oxide-polypyrrole/carbon felt electrode) were used as the cathode, and a graphite rod was used as the anode. The constructed device can operate in gravity flow mode, ensuring uniform flow and mass transfer of lead ions in the solution. A function generator produces an excitation signal, which is amplified by the ATA-304 power amplifier to control the voltage between the electrodes. An electrochemical analyzer is then used to observe the experimental phenomena.

Application Directions:

• Environmental Materials and Equipment

• Environmental Protection and Water Treatment

• Bio-Medicine and Drug Analysis

• Material Science and Nanotechnology

Application Scenarios:

• Wastewater treatment

• Brackish water desalination

• Drug analysis

• Nanomaterial preparation

Product Recommendation:

Figure: Performance Parameters of the ATA-300/3000 Series Power Amplifiers

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