environmental impact

Choosing Between Lead and Lead-Free PCBA Processes: Why Lead-Free Dominates and What Supports Lead-Based?

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Choosing Between Lead and Lead-Free PCBA Processes: Why Lead-Free Dominates and What Supports Lead-Based?

Why Use Lead-Free PCBA Lead-free processes use environmentally friendly solder, aligning with modern green trends. Lead is a toxic heavy metal, and prolonged exposure to lead-containing materials can pose potential health risks to operators, while the disposal of lead waste can also pollute the environment. Additionally, lead-free solder has a higher melting point, typically between … Read more

Cover Article | Long-term Monitoring of Large-scale Active Landslides Using an Integrated Sensor Network for Non-Engineering Disaster Mitigation

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Cover Article | Long-term Monitoring of Large-scale Active Landslides Using an Integrated Sensor Network for Non-Engineering Disaster Mitigation

Citation Catelan FT, Bossi G, Schenato L, et al. (2025) Long-term monitoring of active large-scale landslides for non-structural risk mitigation – integrated sensors and web-based platform. Journal of Mountain Science 22(1). https://doi.org/10.1007/s11629-024-9211-x Cover Article Large slow-moving landslides and Deep-Seated Gravitational Slope Deformations (DSGSD) pose a significant threat to long linear infrastructures due to their continuous … Read more

What Are the Costs and Profits of Recycling Old Circuit Boards? Real Data on Profitability

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What Are the Costs and Profits of Recycling Old Circuit Boards? Real Data on Profitability

The basic materials of old circuit boards are fiberglass and reinforced resin, with a significant amount of copper. Additionally, there are metals such as gold, aluminum, nickel, lead, and silicon, including a mix of rare metals. If not recycled, they become typical heavy metal waste pollution. With the advancement of technology, the refining processes of … Read more

Notes | Green IoT Energy Harvesting Technology (GIoTEH)

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Notes | Green IoT Energy Harvesting Technology (GIoTEH)

The main contribution or innovation of this article is the proposal of an architecture called GIoTEH (Green IoT Energy Harvesting), which aims to build a more sustainable and efficient green IoT ecosystem through Environmental Energy Harvesting (EH) technology. The specific contributions and innovations include: Integration of EH Technology with IoT: Proposing the combination of green … Read more

The Value of Recycling Old PCBs

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Recycling Market Value The price of waste circuit boards mainly depends on the content of precious metals inside. For example, the price of a ton of waste circuit boards from TV circuit boards is around 30,000 to 40,000 yuan. A ton of computer boards typically contains about: 300-500g of gold, 130kg of copper, 10kg of … Read more

Research Progress on Crystal Transformation Mechanism of Phosphogypsum

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Research Progress on Crystal Transformation Mechanism of Phosphogypsum

Click the blue words Follow us [Source] Jiang Junde, Yang Yan, Hu Qian, et al. Research progress on the crystal transformation mechanism of phosphogypsum [J]. Ecological Industry Science and Phosphorus and Fluorine Engineering, 2024, 39(9):60-65. Research Progress on Crystal Transformation Mechanism of Phosphogypsum Jiang Junde1, Yang Yan2, Hu Qian1, He Xi1, Xia Zhichen1, Xiang Shuanglong1, … Read more