![]() If you must use these chemicals, use safer ones.Ħ. Use safer solvents and reaction conditions: Avoid using solvents, separation agents, or other auxiliary chemicals. Design safer chemicals and products: Design chemical products that are fully effective yet have little or no toxicity.ĥ. Design less hazardous chemical syntheses: Design syntheses to use and generate substances with little or no toxicity to either humans or the environment.Ĥ. Maximize atom economy: Design syntheses so that the final product contains the maximum proportion of the starting materials. Prevent waste: Design chemical syntheses to prevent waste. These principles demonstrate the breadth of the concept of green chemistry:ġ. ![]() Using the nonhazardous sorbent means that the hazardous sorbent is never manufactured and so the remediation technology meets the definition of green chemistry. One example is replacing a hazardous sorbent used to capture mercury from the air for safe disposal with an effective, but nonhazardous sorbent. If a technology reduces or eliminates the hazardous chemicals used to clean up environmental contaminants, this technology would qualify as a green chemistry technology. Remediation removes hazardous materials from the environment on the other hand, green chemistry keeps the hazardous materials out of the environment in the first place. Most remediation activities do not involve green chemistry. Remediation may include separating hazardous chemicals from other materials, then treating them so they are no longer hazardous or concentrating them for safe disposal. This is unlike cleaning up pollution (also called remediation), which involves treating waste streams (end-of-the-pipe treatment) or cleanup of environmental spills and other releases. Green chemistry reduces pollution at its source by minimizing or eliminating the hazards of chemical feedstocks, reagents, solvents, and products. How green chemistry differs from cleaning up pollution Designs chemical products and processes to reduce their intrinsic hazards. ![]()
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