Lohum Cleantech Operator Interview Questions, Process, and Tips

Solvent extraction is a method used to separate compounds based on their solubility in different solvents.

• Solvent extraction involves mixing a sample with a solvent that can selectively dissolve the desired compound.

• The mixture is then separated into layers, with the compound of interest being extracted into the solvent layer.

• Common examples include extracting caffeine from coffee beans using water or extracting essent

Distillation is a process of separating components of a liquid mixture based on differences in boiling points.

• Distillation involves heating the liquid mixture to create vapor, then cooling the vapor to condense it back into liquid form.

• The components with lower boiling points will vaporize first and be collected, while the components with higher boiling points will remain in the liquid phase.

• Common examples of distilla...read more

Evaporation is the process by which a liquid turns into a gas due to heat energy.

• Evaporation occurs when molecules at the surface of a liquid gain enough energy to escape into the air.

• It is a cooling process as it removes heat from the liquid.

• Examples include water evaporating from a puddle on a hot day or sweat evaporating from our skin.

• Evaporation is an important part of the water cycle.

Heat transfer is the process of energy moving from a warmer object to a cooler object.

• Heat transfer can occur through conduction, convection, or radiation.

• Conduction is the transfer of heat through direct contact between objects, like a metal spoon heating up in a hot drink.

• Convection is the transfer of heat through the movement of fluids, like boiling water in a pot.

• Radiation is the transfer of heat through electromag...read more

Solvent extraction involves using a solvent to separate compounds, while distillation involves separating compounds based on their boiling points.

• Solvent extraction uses a solvent to dissolve the desired compound, which is then separated from the solvent. Distillation involves heating a mixture to separate compounds based on their boiling points.

• Solvent extraction is often used in the extraction of essential oils from ...read more

Vaporization is the process of turning a liquid into a gas through heat, while evaporation is the process of a liquid turning into a gas at a temperature below its boiling point.

• Vaporization requires heat to change a liquid into a gas, while evaporation can occur at room temperature.

• Vaporization is a rapid process, such as boiling water to create steam, while evaporation is a slower process, like a puddle drying up.

• Vap...read more