Advanced Waste Treatment _ A Field Study Training Program Exam Questions and Answers

ABSORPTION - Answer-The taking in or soaking up of one substance into the body of another by molecular or chemical action. ADSORPTION - Answer-The gathering of a gas, liquid, or dissolved substance on the surface or interface zone of another material. AEROBES - Answer-Bacteria that must have dissolved oxygen to survive. Aerobes are aerobic bacteria. AMBIENT - Answer-Temperature of the surroundings. ANAEROBES - Answer-Bacteria that do not need dissolved oxygen to survive. BENZENE - Answer-An aromatic hydrocarbon (C6H6) that is a colorless, volatile, flammable liquid. Benzene is obtained chiefly from coal tar and is used as a solvent for resins and fats and in the manufacture of dyes. Benzene has been found to cause cancer in humans. BIOMASS - Answer-A mass or clump of organic material consisting of livign organisms feeding on wastes, dead organisms, and other debris. BLOCKOUT - Answer-The physical prevention of the operation of equipment. ELECTROLYTE - Answer-A substance that dissociates into two or more ions when it is dissolved in water. ELECTROLYTIC - Answer-A process that causes the decomposition of a chemical compound by the use of electricity. FACULTATIVE - Answer-Facultative bacteria can use either dissolved oxygen or oxygen obtained from food materials such as sulfate or nitrate ions. In other words, facultative bacteria can live under aerobic, anoxic, or anaerobic conditions. INDOLE - Answer-An organic compound (C8H7N) containing nitrogen that has an ammonia odor. MATERIAL SAFETY DATA SHEET - Answer-A document that provides pertinent information and a profile of a particular hazardous substance or mixture. The MSDS is required to be made available to employees and operators or inspectors whenever