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Posted: April 30th, 2022
Environmental health perspectives on the disposal of toxic wastes
The disposal of toxic wastes is a major environmental and public health challenge that requires urgent attention and action. Toxic wastes are any materials that contain substances that can harm living organisms or the environment, such as infectious, chemical, radioactive, or pharmaceutical wastes. These wastes are generated by various sources, such as health-care facilities, laboratories, industries, households, and agricultural activities. Improper disposal of toxic wastes can lead to soil, water, and air pollution, as well as exposure to hazardous substances that can cause acute and chronic diseases, birth defects, cancers, and genetic mutations.
According to the World Health Organization (WHO), about 15% of the waste generated by health-care activities is considered hazardous material that may be infectious, toxic or radioactive . Every year an estimated 16 billion injections are administered worldwide, but not all of the needles and syringes are properly disposed of afterwards . Open burning and incineration of health care wastes can, under some circumstances, result in the emission of dioxins, furans, and particulate matter . These pollutants can have adverse effects on the respiratory system, the immune system, the reproductive system, and the nervous system .
The impacts of hazardous and toxic waste management are not limited to the health sector. Other sectors, such as agriculture, industry, energy, and transportation, also produce toxic wastes that need to be managed safely and environmentally soundly. For example, improper disposal of industrial wastes can contaminate soil and water resources with heavy metals, organic chemicals, and persistent organic pollutants (POPs) . These substances can accumulate in the food chain and pose risks to human health and wildlife . Moreover, some toxic wastes can contribute to climate change by releasing greenhouse gases, such as methane and carbon dioxide .
Therefore, it is essential to adopt a systematic approach to address the problem of toxic waste disposal. This approach should include the following elements:
– Prevention: reducing the generation of toxic wastes at the source by applying cleaner production techniques, waste minimization strategies, and green chemistry principles .
– Segregation: separating hazardous wastes from non-hazardous wastes at the point of generation to facilitate their proper handling and treatment .
– Collection: ensuring that toxic wastes are collected in appropriate containers and transported safely to designated facilities .
– Treatment: applying suitable technologies to treat toxic wastes according to their characteristics and risks, such as autoclaving, chemical disinfection, microwave irradiation, encapsulation, vitrification, or bioremediation .
– Disposal: disposing of treated toxic wastes in secure landfills or other approved facilities that prevent their leakage or migration to the environment .
– Monitoring: conducting regular inspections and audits to ensure compliance with waste management regulations and standards .
– Education: raising awareness and providing training to waste generators, handlers, and managers on the hazards and impacts of toxic wastes and the best practices for their management .
– Research: conducting scientific studies to assess the health and environmental effects of toxic waste disposal and to develop innovative solutions for waste reduction and recovery .
By implementing these measures, it is possible to protect human health and the environment from the harmful consequences of toxic waste disposal. Moreover, it is possible to create economic opportunities and social benefits by recovering valuable resources from waste streams and by creating green jobs in the waste management sector .
References:
: WHO. (2018). Health-care waste. https://www.who.int/news-room/fact-sheets/detail/health-care-waste
: Fazzo et al. (2017). Hazardous waste and health impact: a systematic review of the scientific literature. Environmental Health 16(107). https://doi.org/10.1186/s12940-017-0311-8
: Scale Climate Action. (2023). Dangers of Improper Garbage Disposal: Health Effects and Environmental Contamination. https://scaleclimateaction.org/environment/dangers-of-improper-garbage-disposal-health-effects-and-environmental-contamination/
: ISS International Journal Labs. (2021). The Impacts of Hazardous and Toxic Waste Management: A Systematic Review. https://iss.internationaljournallabs.com/index.php/iss/article/view/20
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