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DEET is a chemical compound that repels mosquitoes, flies, ticks, and other biting insects. It is effective, but can damage some types of synthetic fabrics and plastics, and has some health risks and contraindications.
Learn about the definition, characteristics, and effects of persistent organic pollutants (POPs), a group of toxic chemicals that resist degradation and accumulate in the environment and human tissues. Find out the list of POPs regulated by the Stockholm Convention and their sources, transport, and health impacts.
In 1945, DDT was made available to farmers as an agricultural insecticide [5] and played a role in the elimination of malaria in Europe and North America. [15] [40] [41] Despite concerns emerging in the scientific community, and lack of research, the FDA considered it safe up to 7 parts per million in food. There was a large economic incentive ...
Reclaimed water is water that is recycled from wastewater for various purposes, such as irrigation, industry, or drinking. Learn about the process, technologies, and advantages of water reclamation and reuse, especially in arid regions and cities.
Published in 1962, Silent Spring exposed the harmful effects of pesticides on humans and wildlife, and sparked a movement for environmental protection. The book was based on extensive research, scientific evidence, and personal experience, and faced opposition from the chemical industry and the government.
Formaldehyde, also known as methanal or methylene oxide, is a colorless gas with a pungent odor. It is widely used as a disinfectant, preservative, and building material, but it can also cause irritation and allergic reactions.
During this process, oxidizing substances are added to PFAS-contaminated water and then the liquid is heated above its critical temperature of 374 degrees Celsius at a pressure of more than 220 bars. The water becomes supercritical, and, in this state, water-repellent substances such as PFASs dissolve much more readily. [224]
Learn about the definition, sources, collection, processing and valorization of biodegradable waste, which includes organic matter that can be broken down by micro-organisms or other living things. Find out how biodegradable waste can be used for composting, incineration, anaerobic digestion, biofuel, bioplastics and other products.