DALLAS — Dell Inc. plans to triple the amount of electronics it can recycle by 2009, the company said in an annual report outlining its environmental goals and achievements.

The announcement comes as Dell and other computer makers, bowing to demands from consumers and environmental groups, have become increasingly sensitive to the safe handling of the toxic brew of materials such as cadmium, mercury and lead contained in many electronics.

Dell's updated recycling efforts, highlighted in the Round Rock, Texas-based company's 83-page "Sustainability Report," were issued Wednesday in Oakland, Calif., at an environmental business conference. Dell has been issuing such reports since 1998.

Dell said that in the fiscal year ending Feb. 3, it recovered more than 70 million pounds of used computers, monitors and printers — a 72 percent increase over last year's efforts. Dell officials said the goal is to recover 210 million pounds by the end of 2009.