Definition Colorimetry is an analytical technique used to determine the concentration of a substance in a solution by measuring the intensity of its color. It is based on the principle that colored compounds absorb specific wavelengths of light, and the…
Definition An electrolyte is a substance that produces electrically conductive ions when dissolved in a solvent, melted, or in solid state. These ions enable the conduction of electric current through the medium. In chemical and electrochemical engineering, electrolytes are essential…
Definition Conductivity, also known as specific conductance, refers to the ability of a material or solution to conduct electric current. It is the reciprocal of resistivity and is commonly represented by the symbol κ (kappa). In chemical and process engineering,…
Definition Water (H₂O) is a fundamental chemical substance composed of hydrogen and oxygen. It exists widely in nature and industrial systems in liquid, solid, and gaseous states. In chemical and process engineering, water is not only a natural resource but…
Overview In chemical and process industries, hazard analysis and risk assessment are two foundational elements of process safety engineering. They are used to systematically identify potential hazards in industrial systems and evaluate the associated risks to ensure safe design, operation,…
Definition New energy materials refer to a broad class of functional materials used in energy conversion, storage, and utilization systems that support renewable and low-carbon energy technologies. Unlike conventional industrial materials, new energy materials are designed to enable or improve…
Definition Degradable plastics are polymer materials designed to undergo structural breakdown under specific environmental conditions such as heat, moisture, oxygen exposure, or microbial activity. Unlike conventional plastics, which remain chemically stable for long periods, degradable plastics are engineered to reduce…
Definition Renewable feedstock refers to raw materials that originate from renewable or recoverable sources and can be reintroduced into industrial production systems. Unlike virgin fossil-based feedstocks, renewable feedstocks are derived from waste streams, recycled materials, or biomass-based resources that can…