Microwave heating and non-thermal effects of sodium chloride aqueous solution

ABSTRACT

The dielectric thermal and non-thermal properties of sodium chloride aqueous solution under the microwave region have been estimated. The dielectric properties, hydrogen bonding, transport properties, energy distribution and local structure have been evaluated by classical molecular dynamics method. In the process of microwave energy distribution, the direct coupling of rotational motion, vibration and redirection is revealed. Microwave energy is converted into kinetic energy and interaction energy between two molecules. A mechanism for exploring the effects of microwaves on the non-thermal effects of brine systems over a longer simulation time and a wider microwave range is proposed. The increase in field intensity is usually accompanied by local damage to the water structure near the hydrated ions. More specifically, above the field threshold, the residence time of water molecules near the ions significantly decreases.

Highlights

1. Microwave energy is transferred to the kinetic energy and the energy between the molecules.

2. The increase in field intensity is usually accompanied by local damage to the water structure near the hydrated ions.

3. The larger electric field strength amplifies the effect of frequency.

4. The residence time of water molecules near the ions significantly decreases.

GRAPHICAL ABSTRACT

KEYWORDS:

• Thermal and non-thermal
• microwave field
• molecular dynamic

Acknowledgments

We appreciate funding support from the Major Project of Education Department in Sichuan, China (No. 18ZA0402).

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

This work was supported by Major Project of Education Department in Sichuan, China [Grant number 18ZA0402].