인문학
사회과학
자연과학
공학
의약학
농수해양학
예술체육학
복합학
DBpia AI
AI 에이전트
AI 아이디어
AI 리더
AI 뷰어
Citeasy
크롬 서지관리 다운로드
지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록·키워드
Abstract The rapid expansion of the photovoltaic industry has precipitated an imminent waste crisis, creating an urgent need to recover high-value silver from end-of-life modules. While bioleaching is a green process, it is constrained by slow kinetic reactions and low efficiency. Although external electric fields show potential for enhancing the process, their mechanisms of action, particularly at the metabolic and molecular levels remain unclear. This study reveals how milliampere-level direct current overcomes inherent rate-limiting steps in silver bioleaching through a dual mechanism. Under 10 mA stimulation, cyanide yield and silver leaching efficiency increased significantly by 58% and 788% respectively, compared to the control group. The electric field not only accelerated reaction kinetics but also strengthened Ag-C bonds, enhanced [Ag(CN)₂]⁻ stability and reactivity, and increased electron density around silver atoms, thereby promoting leaching. Furthermore, the electric field induced profound metabolic reprogramming within the microbial community. By upregulating key metabolic pathways including those involving glycine and other precursors, it accelerated cyanide synthesis. The electric field selectively enriched genera, such as Pseudomonas with potent amino acid metabolism genes, thereby coordinating the upregulation of core metabolic pathways. The synergistic mechanism of electric field-induced metabolic reprogramming coupled with interfacial reaction activation overcomes the inherent bottlenecks in conventional bioleaching. Preliminary techno-economic assessments confirm the economic viability of this electro-stimulation process, offering an innovative and sustainable strategy for recovering precious metals in urban mining. Graphical Abstract
인공지능 문자 인식 모델을 통해 추출된 텍스트로, 일부 오타나 오류가 포함될 수 있으나 지속적으로 개선 중입니다.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
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