Laboratory Pollution Prevention continued from page 1
Economy of Size Myth- Cost Analysis of Xylene Package Size Purchase price Unit purchase price per ml when 2,000 ml are used Unit purchase price per ml Disposal costs Purchase + disposal cost per ml used
Purchase + disposal cost From “Less is Better,” American Chemical Society, 2002
Substitute less hazardous or non-hazardous materials.
Substitution of less hazardous or non-hazardous materials can effectively reduce the amount of hazardous waste generated from your lab and risk of exposure to lab workers.
Examples of Substituting Less Hazardous Chemicals
propylene glycol instead of ethylene glycol;
ethyl alcohol instead of methylene alcohol;
alcohol thermometers instead of mercury thermometers;
Alconox, Pierce RBS35 and Nochromix instead of chromic acid cleaning solutions; and
detergent and hot water instead of organic solvent cleaning solutions
Implement a Purchasing/Inventory Control Program.
This consists of:
rotating stock “first-in, first-out”;
addressing shelf-life issues;
completing an inventory review at least once per year; and
using surplus chemicals within an organization or distributing to others via a chemical/
OMEx - The Ohio Materials Exchange distributes free information on surplus and/or waste materials available from or wanted by industrial and commercial entities. There are details on the Office of Compliance Assistance and Pollution Prevention’s (OCAPP) Web site.
The Ohio National Guard’s 180th Fighter Wing, Swanton, OH implemented a Hazardous Materials Pharmacy (HMP), or inventory control system, as part of an enforcement settlement with DHWM in 1998. The HMP provides a centralized storage and distribution center for all hazardous materials. The Guard saved an estimated at $10,000-$30,000 per year in chemical purchase costs and reduced disposal of expired chemicals by 1,000 pounds per year.
Segregate your waste.
Keep individual hazardous waste streams segregated: hazardous from non-hazardous and recyclable from non-recyclable.
Success story: A lab in Arizona reduced hazardous waste generation by 87 percent in one year by training employees to segregate waste.
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