4) D. B. Johnson, C. Joulian, P. d'Hugues, and K. B. Hallberg: Sulfobacillus benefaciens sp. nov., an acidophilic facultative anaerobic Firmicute isolated from mineral bioleaching operations. Extremophiles, 12, 789-798 (2008).

5) A. Bharadwaj and Y. P. Ting: Bioleaching of spent hydrotreating catalyst by acidophilic thermophile Acidianus brierleyi: leaching mechanism and effect of decoking, Bioresour. Technol., 130, 673-680 (2013).

6) 千田佶編著、微生物資源工学、p55、コロナ社（1996）

7) Z. Chenglong, W. Jingwei, B. Jianfeng, W. Wenjie: Life cycle assessment of the bio-hydrometallurgical process of recycling copper from printed circuit boards scraps. Adv. Mater. Res., 156-157, 929-932 (2011).

8) 安達毅、茂木源人：鉱山費用推定システムによる採掘・選鉱プロセスを考慮した銅地金生産の CO₂ 排出に関するインベントリ分析、日本 LCA 学会誌、Vol. 2、No.3、238-244 (2006).

9) 成田暢彦、匂坂正幸、稲葉敦：電気銅生産システムにおける $ CO_{2} $ 排出のライフサイクルインベントリ分析、資源と素材、Vol.117、49-55 (2001).

10) 物質・材料研究機構、金属元素の精錬・精製段階における環境負荷算定に関する調査、2003.3.

11） 産業環境管理協会、MiLCA Database (IDEA)、2010

12) 日本鉱業協会、非鉄金属地金の LCI データの概要、日本 LCA フォーラムデータベース、2003.1.30.

13) 石油天然ガス・金属鉱物資源機構、湿式製錬による銅鉱山開発技術 SX-EX 法、2005.4

14) N. Miyata, Y. Tani, K. Maruo, H. Tsuno, M. Sakata, and K. Iwahori: Manganese(IV) oxide production by Acremonium sp. strain KR21-2 and extracellular Mn(II) oxidase activity. Appl. Environ. Microbiol., 72(10), 6467-6473 (2006).

15) J. Chang, Y. Tani, H. Naitou, N. Miyata, H. Seyama, and K. Tanaka: Cobalt(II) sequestration on fungal biogenic manganese oxide enhanced by manganese(II) oxidase activity. Appl. Geochem., 37, 170-178 (2013).

16) J. Wang, J. Bai, J. Xu, and B. Liang: Bioleaching of metals from printed wire boards by Acidithiobacillus ferrooxidans and Acidithiobacillus thiooxidans and their mixture. J. Hazard. Mater., 172, 1100-1105 (2009)

17) N. Zhu, Y. Xiang, T. Zhang, P. Wu, Z. Dang, P. Li, and J. Wu: Bioleaching of metal concentrates of waste printed circuit boards by mixed culture of acidophilic bacteria. J. Hazard. Mater., 192, 614-619 (2011).

18) J. Willner: Influence of physical and chemical factors on biological leaching process of copper from printed circuit boards. Metalurgija, 52 (2), 189-192 (2013).

19) T. Yang, Z. Xu, J. Wen, and L. Yang: Factors influencing bioleaching copper from waste printed circuit boards by Acidithiobacillus ferrooxidans. Hydrometallurgy, 97, 29-32 (2009).

20) A. D. Bas, H. Deveci, and E. Y. Yazici: Bioleaching of copper from low grade scrap TV circuit boards using mesophilic bacteria. Hydrometallurgy, 138, 65-70 (2013).

21) S. Ilyasa, M. A. Anwarb, S. B. Niazia, and M. A. Ghauri: Bioleaching of metals from electronic scrap by moderately thermophilic acidophilic bacteria. Hydrometallurgy, 88, 180-188 (2007).

22) G. Lianga, Y. Mob, and Q. Zhou: Novel strategies of bioleaching metals from printed circuit boards (PCBs) in mixed cultivation of two acidophiles. Enzyme Microb. Technol., 47, 322-326 (2010).

23) Y. Yanga, S. Chena, S. Lib, M. Chena, H. Chena, and B. Liu: Bioleaching waste printed circuit boards by Acidithiobacillus ferrooxidans and its kinetics aspect. J. Biotechnol., 173, 24-30 (2014).

24) R. A. Bobadilla-Fazzini, M. P. Cortes, A. Maass, and P. Parada: Sulfobacillus thermosulfidooxidans strain Cutipay enhances chalcopyrite bioleaching under moderate thermophilic conditions in the presence of chloride