From the B&L Website, http://www.blcremationsystems.com/Environmental.html
Here is a chart that seems to indicate crematories are low polluters. However, this chart has NO SOURCES CITED! Anyone can make a chart with any information on it, but if they cannot show where they got their input data from it is about as valuable to this conversation as a kindergartner’s art project.
By contrast, ANY and ALL claims made on this website have reputable sources cited and linked. Go ahead and check to verify that these claims are true and based in fact. Below is a chart created by Brian Kalina, one of CAN’s members. I have included his sources below. Mr. Kalina is an engineer specializing in combustion. His notes follow.
“Here CP-APPLICATION_Waterloo_Wilbert_Vault_DocID_AP3508 is the document from which I pulled expected crematory soot emissions rate for a local crematory.
Key pages for soot (otherwise referred to as particulate matter or “PM”) emissions are 13, 15, 23, 41, and 43. Key pages for toxic air pollutants such as mercury, hydrochloric acid, lead, dioxins, and furans are 11, 12, and 30.
As for the calculations I made which are shown in the picture above, I may need to modify my assumptions for how many hours each crematory operates per year.”
“The human body contains 29 different chemical elements considered necessary to sustain biological processes. Moreover, the human body contains at least 60 different chemical elements detectable in at least trace quantities. By comparison, diesel fuel primarily contains 2 different chemical elements accompanied by very small quantities of 3 or so others. The more chemical elements that are involved in the combustion process, the greater the number of different chemical compounds that can become synthesized. A problem with this greater number of chemical compounds is that a given method of filtration or aftertreatment only works most effectively for certain compounds. Where a diesel engine can get by with three different filtration/aftertreatment devices, a crematory would require significantly more different devices in order to achieve emissions characteristics comparable to a diesel engine. Though some people certainly do prefer cremation, this preference creates a unique problem in that the combustion of the human body, inherently, will not result in the discharge of biologically benign combustion products unless an exceedingly complicated network of filters, scrubbers, and after treatment devices is used.”
NOTE: Diesel trucks, unlike crematories, are heavily regulated and required to have filters.