此外还有博主添油加醋，表示一张信用卡的芯片里，就含有0.2克黄金。 最近，一段所谓"炼金"视频在社交网络刷屏了。视频中，一位博主展示了自己如何从一堆废旧的SIM卡和电子芯片中，经过一道道 复杂的工序，最终提炼出了一块191.73克的黄金。如果按照现在的金价计算，这一小块金疙瘩价值超过20万元人民币。甚至有自媒 体号称每张SIM卡里含有0.02克黄金！难道我们都手握黄金而不自知？专家介绍，SIM卡能提炼黄金不假，但卡内黄金含量极低， 且只有专业机构，才能操作。 视频截图 在一段视频中，博主"客家炼金师一桥"站在堆积如山的电子废料前。将一些像SIM卡一样的金属片放进大桶里，经过一系列操作 后，提取了191.73克黄金。有短视频开始分析，每张SIM卡，居然有0.02克黄金。 面对舆论的沸腾，当事人后来澄清：他提炼使用了2吨原料，并未在视频中全部展现，而且并非全是SIM卡或信用卡芯片，而是富 含金镀层的电子芯片废料集合。 长期从事贵金属回收行业的从业者林先生告诉记者，贵金属回收行业已经非常成熟，从SIM卡到键盘再到各种电子设备，一般都有 镀金涂层。但一些自媒体的说法有常识性错误，相较于一张SIM卡有0.02克黄金，其 ...

长期从事贵金属回收行业的从业者林先生告诉中国之声记者，贵金属回收行业已经非常成熟，从SIM卡 到键盘再到各种电子设备，一般都有镀金涂层。但一些自媒体说法有常识性错误，相较于一张SIM卡有 0.02克黄金，其实现在常用的Nano-SIM卡能提取0.02毫克黄金就不错了，这和网上说的相差1000倍。 林先生：SIM卡也好，银行卡芯片也好，就是铜和镍，它上面只有一层非常薄的、水镀的一层黄金，差 不多0.02毫克还是有可能的。这样子换算下来就是等于说要10万张卡，而且还是芯片，有可能会炼出两 克黄金。虽然只差了一个字，但是这一下差了1000倍！去收集一两千张卡，那是根本没有意义的。 最近，一段所谓"炼金"的视频在社交网络上刷屏了。视频中，一位博主自称从一堆废旧的SIM卡和电子 芯片中，经过一道道复杂的工序，最终提炼出了一块重191.73克的黄金。按照现在的市场价格计算，这 一小块金疙瘩价值超过20万元人民币。 甚至，有自媒体说，每张SIM卡里就含有0.02克黄金，而每张信用卡芯片里能提炼出0.2克黄金。难道 说，我们平时用的手机卡、银行卡，卡本身真的这么有"含金量"吗？我们就此采访了一些专家。那专家 给出的答案是：是 ...

Core Viewpoint - The research from the University of Maryland presents a breakthrough in sustainable electronics by utilizing 3D printing technology to create water-soluble circuit boards, which could significantly reduce electronic waste and promote a more sustainable future for the consumer electronics industry [1][2]. Group 1: Innovation and Technology - The team developed circuit boards using polyvinyl alcohol (PVA), a water-soluble polymer, and demonstrated the assembly of functional electronic products like Bluetooth speakers and toys [1]. - The circuit boards can dissolve in water after a certain period, allowing for easy separation of electronic components and the recovery of up to 99% of the PVA material after evaporation [1]. Group 2: Environmental Impact - Traditional printed circuit boards contribute to significant electronic waste, with only a small fraction being recycled; the new technology offers a more environmentally friendly alternative [1][2]. - According to a UN report, Asia generates 600,000 tons of waste circuit boards annually with a recycling rate of only 17%, while Europe and North America produce around 300,000 tons each, with recycling rates of 61% and 44%, respectively [2]. Group 3: Market Application and Limitations - The dissolvable circuit boards are particularly suitable for rapid prototyping and testing of electronic devices, presenting an eco-friendly advantage over traditional circuit boards [2]. - Current limitations include the durability of the circuit boards, which makes them more appropriate for prototype development rather than large-scale production; the team is in discussions with manufacturers to explore feasible pathways for broader application [2].

Core Viewpoint - The U.S. Department of Defense has invested $400 million to become the largest shareholder in MP Materials, aiming to reduce reliance on Chinese rare earth elements and focusing on electronic waste recycling as an alternative source of critical metals [1][6]. Group 1: Investment and Market Dynamics - The U.S. is increasingly looking to electronic waste recycling to extract essential metals like gold, silver, copper, and rare earth elements, as traditional supply chains face disruptions due to tariffs and geopolitical tensions [1][5]. - The electronic waste recycling industry is projected to generate $28.1 billion in revenue by 2024, with a compound annual growth rate of 8% [4]. - The U.S. currently imports about half of its copper, and the rising copper prices due to tariffs highlight the need for domestic recycling solutions [3][4]. Group 2: Electronic Waste Statistics - In 2022, global electronic waste reached a record 62 million tons, an 82% increase since 2010, with projections to rise to 82 million tons by 2030 [4]. - The U.S. produced nearly 8 million tons of electronic waste in 2022, with only 15% to 20% being properly recycled, indicating significant potential for resource recovery [4]. Group 3: Technological Innovations and Initiatives - Companies like Illumynt and Western Digital are initiating projects to recover rare earth elements and other valuable metals from electronic waste [6]. - Cyclic Materials, a Canadian startup, is developing technology to extract rare earth metals from various electronic waste sources, planning to invest over $20 million in a new recycling facility in Arizona [6]. Group 4: Challenges and Future Outlook - The recycling of lithium batteries is gaining attention due to the critical metals they contain, but potential changes in federal tax incentives could impact investment in these projects [7]. - The industry is witnessing a trend towards localizing electronic waste processing, as companies and consumers recognize the availability of metals domestically rather than relying on imports [5].