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Acid Bath: In this method, the e-waste is soaked in solutions of sulphuric, hydrochloric, and nitric acids to get the metal
out. The salvaged metal is then used to make other things. However, acid solutions are difficult to dispose of. Releasing
acids into water is bad for living things.
Mechanical recycling: The most effective and environmentally responsible method is to recycle. In this method, used
circuit boards, ICs, motherboards, and other parts are taken from e-waste and recycled by dry physical separation.
A printed circuit board (PCB) recycling machine may be used to separate precious metals like copper, lead, and other
metals from e-waste.
8.10.2 Awareness about Health Concerns
Technology has had a great impact on our social and cultural environment. The technology revolution, especially the
Internet, has changed everything, from education to entertainment to health to how we celebrate holidays and how
we talk to our friends, family, and coworkers. While technology has brought numerous benefits and advancements,
it is crucial to understand and address potential health risks associated with its use. Here are some common health
concerns related to technology:
1. Computer vision syndrome: Spending long hours in front of screens, such as computers, smartphones, and tablets,
can lead to eye strain, dryness, blurred vision, and headaches. This is often referred to as computer vision syndrome.
To mitigate these effects, it is recommended to take regular breaks, adjust screen brightness, use proper lighting,
and follow the 20-20-20 rule (look at something 20 feet away for 20 seconds every 20 minutes).
2. Sleep disturbances: The use of technology, particularly before bedtime, can negatively impact sleep quality. The
blue light emitted by screens can interfere with the production of melatonin, a hormone that regulates sleep. It is
advisable to limit screen time before bed and use features like night mode or blue light filters on devices.
3. Musculoskeletal problems: Prolonged use of technology, especially when adopting poor posture, can contribute
to musculoskeletal issues such as neck and back pain, shoulder strain, and repetitive strain injuries. Maintaining
ergonomic setups, taking regular breaks, and practicing good posture can help alleviate these problems.
4. Mental health issues: Excessive use of technology, especially social media, can contribute to mental health concerns
such as anxiety, depression, loneliness, and poor self-esteem. It is important to balance screen time, engage in
offline activities, and cultivate healthy social interactions.
5. Electromagnetic radiation: Some individuals express concerns about the potential health effects of prolonged
exposure to electromagnetic fields emitted by devices such as smartphones, Wi-Fi routers, and power lines.
However, scientific research has not established clear evidence of harmful effects at typical exposure levels.
6. Digital addiction: The constant availability and engagement offered by technology can lead to addictive behaviors,
where individuals struggle to control their use of devices. This addiction can have adverse effects on mental health,
relationships, productivity, and overall well-being. Setting boundaries, practicing digital detox, and seeking support
when needed are important steps in addressing digital addiction.
To address these concerns, it is essential to promote digital literacy and encourage responsible technology use.
Educating individuals about healthy habits, advocating for breaks, promoting a balanced lifestyle, and fostering mindful
technology usage can help mitigate potential health risks associated with technology. Additionally, researchers,
industry professionals, and policymakers are continuously working on developing guidelines and technologies that
prioritize user health and well-being.
Give two examples of:
1. E-waste management techniques
2. Health concerns related to technology
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