Zero Waste Logo The Zero Wate Network the University of Texas at Arlington Center for Environmental Excellence Environmental Training Institute Logo  

Join Us on:

Social Network Nav Bar

Lean and P2 Workshops

10/13/15 - 10/15/15

South Houston
11/10/15 - 11/12/15

New Orleans





Environmental Management Systems Workshops

Albuquerque, NM
05/12/15 - 05/15/15

Galveston, TX
07/28/15 - 07/31/15

Austin, TX
09/22/15 - 09/25/15

Arlington, TX
11/17/15 - 11/20/15



Case Study Database

           Add Story    |    Search Case Studies    |   


Nalco/Exxon Energy Chemical Company

Year Submitted: 2005

Process: Process Cleaning

Industry: Chemical Manufacturing

Wastes Reduced: Xylene

Location: Freeport TX

No. of employees: 48

Contact: Ly Nguyen

Phone: (409)233-3541


Since the products are manufactured in broad category, the reactor trains are washed after each product type is made. Xylene, a chemical listed on the Toxics Release Inventory (TRI), was used in large quantities as a solvent to clean reactors and in production. As part of the planning process, Nalco/Exxon identified xylene as a top priority for reduction and set a goal to eliminate xylene as a solvent.

P2 Application:

In 1993 the xylene solvent started to be replaced with Isopropyl Alcohol (IPA), which is not a TRI chemical. By 1996 Nalco/Exxon had successfully replaced all xylene used as solvent. IPA proved to be less efficient than xylene, requiring a larger volume of IPA solvent than the previous xylene amount. Nalco/Exxon has since gone beyond the planning requirements to look for ways to reduce the amount of IPA used.

Environmental Benefits:

Switching to Isopropyl Alcohol solvent: - reduced worker exposure to toxic chemicals and TRI releases and transfers. - resulted in a reduction of almost 50 tons of xylene waste in 1996.

Details of Reductions

Additional Information :

Nalco/Exxon has reduced its liability due to reduced worker exposure to toxic chemicals. The employees recognize the benefits of this change and support continuous improvements in waste elimination and reduction.

Source: TCEQ

SHEP Shield
Health and

ERP Shield

ESP Shield

EMP Shield

Attend a workshop and
earn credits toward a
Professional Certification



The Zero Waste Network is one of eight Pollution Prevention Resource Exchange P2RxCenters , serving as a national network of regional information centers: NEWMOA (Northeast), WRRC (Southeast), GLRPPR (Great Lakes), ZeroWasteNet (Southwest), P2RIC (Plains), Peaks to Prairies (Mountain), WSPPN (Pacific Southwest), PPRC (Northwest). We are a proud member of the National Pollution Prevention Roundtable.

National P2 Roundtable Logo
michael kors online outlet michael kors factory outlet online store michael kors outlet canada michael kors outlet online michael kors factory outlet fake michael kors bags cheap mk bags michael kors handbags clearance wholesale jordans jordans outlet cheap jordans china cheap authentic jordans cheap real jordans cheap jordans free shipping cheap jordans online discount jordans cheap jordans from china cheap air jordans louboutin pas cher louboutin soldes louboutin pas cher louboutin soldes air max pas cher air max femme pas cher air max pas cher roshe run pas cher air max one pas cher air max femme pas cher sac michael kors pas cher sac michael kors pas cher sac longchamp pas cher longchamp soldes sac longchamp pas cher longchamp pas cher moncler outlet moncler outlet moncler outlet