environmental sustainability - Answers everything that we need for our survival/well-being depends
directly or indirectly on our natural environment
alkalinity - Answers measure of a water's capacity to neutralize acids
adsorption - Answers chemical adsorbs to the surface
absorption - Answers chemical absorbs (partitions) into a phase (3D)
organic compounds (OC) - Answers many are hydrophobic, energetically unfavorable compounds to
be dissolved in water
sorption - Answers influences mobility, natural degradation, and engineered remediation of
pollutants
sorbate - Answers substance being captured, sticking to or soaking into sorbent
sorbent - Answers solid material that does the capturing
1/n < 1 - Answers surface becomes saturated
1/n > 1 - Answers sorbate modifies original surface + enhances sorption
octanol - Answers surrogate for tissue or some fluids in animals or organic carbon on soil
partitioning - Answers determines the fate of compound after it enters environment
batch reactor - Answers no mass flows into or out of the reactor
change in concentration results from chemical reaction only
ex: sealed beaker
d[C]/dt= -k[C]^n
completely mixed flow (CMFR) - Answers concentration at any location within reactor volume is
constant
C_out = C_in / (1+kv/Q)
Ct/Co = e^-(Q/v + k )t
plug flow reactor (PFR) - Answers not mixing between plugs as they move through the reactor
net chemical reaction within the plug
V(dC/dt) = -VkC
Ct/Co = e^-kt
which reactor is more efficient? - Answers PFR is more efficient but CMFR is more common since it
can handle the spikes in flow better
have the same flow rate, kinetics, order but better performance is the lower C_out/C_in ratio and the
lower the volume needed the better
heat internal energy - Answers delta E = mc(T2-T1) MCAT
chemical internal energy - Answers delta E = delta H rxn at constant volume
chemical bonds - ex: combustion of hydrocarbon fuels, metabolism of food
molecular interactions - overcoming intermolecular forces in liquid (H2O (l) to water vapor),
overcoming in solid
heat + heat capacity - Answers water's heat capacity is higher than other liquids
oceans help moderate surface temp
temp buffer prevents large, rapid changes in temp + protects aquatic organisms
heat loss - Answers (1/R)(A)(t)
infiltration heat loss - Answers V(infiltration rate)(heat to raise temp of air 1 degree F)
how to reduce heat loss in buildings - Answers thermal storage walls, ventilation, overhangs
evapotranspiration - Answers water is transferred land to atmosphere through evaporation from soil
+ plants
energy balance for urban heat islands - Answers deltaQs = (net radiation) + (anthropogenic heat) -
(sensible heat flux) - (evapotranspiration)
obligate anaerobes - Answers require no oxygen
facultative anaerobes - Answers can survive with or without oxygen, uses aerobic respiration with
oxygen present since its more efficient
primary producers - Answers autotrophs + foundation of ecosystems; primarily plants,
phytoplankton, produce their own food using photosynthesis
primary consumer - Answers primarily get energy/food from primary producers; herbivores
secondary consumer - Answers primarily get energy/food from primary consumer, are carnivores or
omnivores