Відео

Tropospheric ozone patterns, trends, primary photolytic cycle, photostationary state relation, pseudo-stead-state assumption

Methane (CH4) chemistry, formadelhyde, alkanes, alkenes, aromatics

Photochemistry, radicals, OH radical, carbon monoxide (CO) chemistry, radical cycling

(modified from deNevers Ex. 7.10) One-hundred grams of a “typical Pittsburgh seam coal” has a molar composition of C6.32H5.0N0.11S0.05O0.66. It is burned with 20% excess air, and combustion is complete. What are the concentrations of the products in the exhaust gas?

This is a goofy video I made in 2007 about how transformations of nanoparticles in the atmosphere affect their fate.

Example problem applying the Deutsch-Anderson equation to calculate the surface area of plates needed to achieve 99% control for a specific scenario.

How they work, efficiency, Deutsch-Anderson equation, design considerations

The New Source Performance Standards regulate emissions from point sources such as power plants, cement plants, chemical plans, refineries, and more. www.epa.gov/stationary-sources-air-pollution/new-source-performance-standards

Definition of an emission factor, example applying SO2 emission factor from EPA's AP-42 Compilation of Emission Factors with New Source Performance Standards to determine required control efficiency, derivation of the SO2 emission factor 39S.

Solving the mass balance equation with first-order loss for concentration as a function of time, C(t).

How to incorporate first-order reactions in a box model

Estimate the level of SO2 control that would need to be added to a new 600 MW, 35% efficient power plant designed to burn typical Pittsburgh seam coal with a heating value of 13,600 Btu lb-1. The coal contains 2% sulfur by weight. What is the resulting emission rate of SO2 in kilograms per hour?

Definition of the air change rate and how to measure it through tracer gas decay test or constant injection

An educational video by Ph.D. student Alexandra Longest.

Plume rise

Gaussian plume example problem

Gaussian plume reflection and final equation

Gaussian plume model derivation

Gaussian plume dispersion model overview

Mixing depth

Vertical wind profile

Pasquill stability classes

Stopping distance and Stokes number

DIY HEPA filters for masks

Settling velocity

Mass balance and box model

Volume and mass flow rates, standard and actual conditions

Flow rates example problem

Molecular weight of a mixture of gases