Environmental engineering: control

Concentrations at or lower than those normal or working exposures are usually maintained by environmental engineering controls. Operations that generate large amounts of dusts or vapors are conducted in enclosed spaces that are vented separately or under hoods. Other spaces are ventilated adequately, and temperature and humidity controls are installed where necessary. 

In the present study, we show an example of the application of this experimental methodology to the investigation of adsorption characteristic of local bentonite clay. Adsorption / desorption experiment were performed at laboratory scale with model-contaminated gaseous stream containing o-xylene that has been selected as rep resentative VOC because it is environmentally relevant regarding industrial concern. The work aimed to help further development of low cost materials involved in environmental engineering control. 

Using traditional environmental engineering controls such as dust collection systems, fume hoods, and vacuums ... 

L. K. Wang and N. C. Pereira, eds.. Handbook of Environmental Engineering Vol. 1—Air and Noise Pollution Control, The Humana Press, CHfton, N.J., 1979. 

Factors in Control-Equipment Selection In order to solve an air-poUrrtion problem, the problem mrrst be defined in detail. A nrrm-ber of factors mrrst be considered prior to selecting a particrrlar piece of air-polhrtion-control eqrripment. In general, these factors can be grorrped into three categories environmental, engineering, and economic. 

Rossano, A. T. Jr., Engineering Control of Air Pollution, Environmental Science Service Division, Stamford, Coim., (1969), pages 128-135. 

Membrane filtration processes have been successfully applied to the field of environmental engineering for air pollution control,34 potable water purification,22-24 groundwater decontamination,35,36 industrial effluent treatment,37 hazardous leachate treatment,35,36 and site remediation,36 mainly because membrane filtration can remove heavy metals and organics. 

Disaster Control Research Center, School of Civil and Environmental Engineering, Tohoku University, Sendai-980-8579 JAPAN (e-mail Iiton2005 gmail.com)... 

Catalysis plays a prominent role in our society. The majority of all chemicals and fuels produced in the chemical industry have been in contact with one or more catalysts. Catalysis has become indispensable in environmental pollution control selective catalytic routes are replacing stoichiometric processes that generate waste problems. The three-way catalyst effectively reduces pollution from car engines. Catalytic processes to clean industrial exhaust gases have been developed and installed. In short, catalysis is vitally important for our economy now, and it will be even more important in the future. 

Because practically all aromatic organic pollutants that release phenols or anilines in the course of their degradation could bind HS through enzymatic catalysis, methods employing enzyme-catalyzed polymerization reactions minimizing their presence by partial removal in aquatic and terrestrial environments might be utilized in pollution control. This can have a remarkable effect in environmental engineering practice. 

Jensen, P. Noise control. In Handbook of Environmental Engineering, Volume 1, Air and Noise Pollution Control Wang, L.K., Pereira, N.C., Eds. Clifton, NJ 1979, 411-474. 

Lundgren, D. A. Durham, M. D. and Genoble, A. L. "Analysis of Proposed Dust Control Program and Predicted Ambient Air Impact for Agrico Chemical Company s Big Bend Sulfur Nugget Terminal" Environmental Engineering Consultants Gainesville, Florida, February 1978. 

H. Gregor Rigo attended Ohio University and earned his Ph.D. in mechanical and environmental engineering from the University of Illinois. He is currently president of Rigo Rigo Associates, Inc., in Berea, Ohio. He has extensive experience in plant start-up, process and environmental engineering, and applied statistics focused on the use and control of emissions from nontraditional fuels technical, environmental, and economic evaluations and multipathway health risk assessments. 

---