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Journal articles on the topic 'Bio-oxidation'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

JIANG, Tao, Qian LI, Yong-bin YANG, Guang-hui LI, and Guan-zhou QIU. "Bio-oxidation of arsenopyrite." Transactions of Nonferrous Metals Society of China 18, no. 6 (December 2008): 1433–38. http://dx.doi.org/10.1016/s1003-6326(09)60021-2.

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2

Blight, K., D. E. Ralph, and S. Thurgate. "Pyrite surfaces after bio-leaching: a mechanism for bio-oxidation." Hydrometallurgy 58, no. 3 (December 2000): 227–37. http://dx.doi.org/10.1016/s0304-386x(00)00136-5.

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3

Moro-oka, Yoshihiko, and Munetaka Akita. "Bio-inorganic approach to hydrocarbon oxidation." Catalysis Today 41, no. 4 (June 1998): 327–38. http://dx.doi.org/10.1016/s0920-5861(98)00023-6.

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4

SAVARD, M. E., R. GREENHALGH, and B. A. BLACKWELL. "BIO-OXIDATION OF BAZZANENE AND TRICHODIENE." Mycotoxins 1988, no. 1Supplement (1988): 141–42. http://dx.doi.org/10.2520/myco1975.1988.1supplement_141.

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5

Bechi, Beatrice, Susanne Herter, Shane McKenna, Christopher Riley, Silke Leimkühler, Nicholas J. Turner, and Andrew J. Carnell. "Catalytic bio–chemo and bio–bio tandem oxidation reactions for amide and carboxylic acid synthesis." Green Chem. 16, no. 10 (2014): 4524–29. http://dx.doi.org/10.1039/c4gc01321b.

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6

Montes-Rosua, Cristina, Nieves Iglesias-Gonzalez, Rafael Romero, Alfonso Mazuelos, and Francisco Carranza. "Monitoring polythionate bio-oxidation by conductivity measurement." Minerals Engineering 95 (September 2016): 40–47. http://dx.doi.org/10.1016/j.mineng.2016.06.008.

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7

Morales, Marjorie, Jonathan Arancibia, Mariana Lemus, Javier Silva, Juan Carlos Gentina, and German Aroca. "Bio-oxidation of H2S by Sulfolobus metallicus." Biotechnology Letters 33, no. 11 (July 10, 2011): 2141–45. http://dx.doi.org/10.1007/s10529-011-0689-2.

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8

Xiao, Dan, Jennifer Gregg, K. V. Lakshmi, and Peter J. Bonitatibus. "Bio-Inspired Molecular Catalysts for Water Oxidation." Catalysts 11, no. 9 (August 31, 2021): 1068. http://dx.doi.org/10.3390/catal11091068.

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The catalytic tetranuclear manganese-calcium-oxo cluster in the photosynthetic reaction center, photosystem II, provides an excellent blueprint for light-driven water oxidation in nature. The water oxidation reaction has attracted intense interest due to its potential as a renewable, clean, and environmentally benign source of energy production. Inspired by the oxygen-evolving complex of photosystem II, a large of number of highly innovative synthetic bio-inspired molecular catalysts are being developed that incorporate relatively cheap and abundant metals such as Mn, Fe, Co, Ni, and Cu, as well as Ru and Ir, in their design. In this review, we briefly discuss the historic milestones that have been achieved in the development of transition metal catalysts and focus on a detailed description of recent progress in the field.

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9

Kang, Eun-Tae, Jong-Po Kim, and Chang-Yeoul Kim. "Surface modification and bio-activation of bio-inert glasses through thermal oxidation." Journal of Non-Crystalline Solids 389 (April 2014): 1–10. http://dx.doi.org/10.1016/j.jnoncrysol.2014.01.043.

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10

Lei, Jiang. "Surface Characteristic of Pyrrhotite Bio-Oxidized by Acidithiobacillus Ferrooxidans." Advanced Materials Research 343-344 (September 2011): 920–25. http://dx.doi.org/10.4028/www.scientific.net/amr.343-344.920.

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This paper deals with the surface characteristic of pyrrhotite bio-oxidized byAcidithiobacillus ferrooxidans. Large amounts of jarosite and element sulfur were determined in the bio-oxidation processe of pyrrhotite. More complicatedly, biofilm exists on the surface of pyrrhotite. This type of structured community ofA. ferrooxidanswas enclosed in the extracellular polymeric substances (EPS), and covered with the deposition generated in the bio-oxidation processe of pyrrhotite.

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11

Wu, Zeng Ling. "Sulfide Minerals Bio-Oxidation of a Low-Grade Refractory Gold Ore." Materials Science Forum 921 (May 2018): 157–67. http://dx.doi.org/10.4028/www.scientific.net/msf.921.157.

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This paper describes the oxidative dissolution kinetics of sulfides with gold occlusion within pyrite and arsenopyrite. Shake flasks tests and column leaching of a low grade gold ore from China were carried out with domesticated mixed acidophiles isolated from acid mine drainage. Both test show that the main factors accelerating sulfide oxidation was mainly temperature and redox potential. Column bio-oxidation of mineral with a particle size less than 10 mm at 60°C resulted in higher mineral decomposition, finer fractions and eventually higher sulfide oxidation than that at 30°C. Sulfide-S dissolution increased from 58% to 77% from 30°C to 60°C after 247 ds of bio-oxidation. Further investigation into microbial community attached to the ore surface and in the leachate during the bio-oxidation was done by Real-time PCR assays. Organism of genera Acidithiobacillus was the most dominant species in both leachate and ore surface at lower temperature. For the Archaea, the iron oxidizing microbial Ferroplasma showed its predominance of 60°C. Mineral dissolution kinetics and microbial community in bio-oxidation was lucubrated in this work and suggestions were provided for pre-treatment of refractory gold ore.

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12

Bechi, Beatrice, Susanne Herter, Shane McKenna, Christopher Riley, Silke Leimkuehler, Nicholas J. Turner, and Andrew J. Carnell. "ChemInform Abstract: Catalytic Bio-Chemo and Bio-Bio Tandem Oxidation Reactions for Amide and Carboxylic Acid Synthesis." ChemInform 46, no. 11 (February 24, 2015): no. http://dx.doi.org/10.1002/chin.201511047.

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13

Wang, Ling, and Tian Li. "Anaerobic ammonium oxidation in constructed wetlands with bio-contact oxidation as pretreatment." Ecological Engineering 37, no. 8 (August 2011): 1225–30. http://dx.doi.org/10.1016/j.ecoleng.2011.03.008.

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14

Jiang, Lei, Huaiyang Zhou, Xiaotong Peng, and Zhonghao Ding. "Bio-oxidation of galena particles by Acidithiobacillus ferrooxidans." Particuology 6, no. 2 (April 2008): 99–105. http://dx.doi.org/10.1016/j.partic.2007.11.004.

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15

Tan, Kok H., Wenjing Xu, Simon Stefka, Dan E. Demco, Tetiana Kharandiuk, Volodymyr Ivasiv, Roman Nebesnyi, Vladislav S. Petrovskii, Igor I. Potemkin, and Andrij Pich. "Selenium‐Modified Microgels as Bio‐Inspired Oxidation Catalysts." Angewandte Chemie International Edition 58, no. 29 (July 15, 2019): 9791–96. http://dx.doi.org/10.1002/anie.201901161.

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16

OLDENBURG, P., and L. QUEJR. "Bio-inspired nonheme iron catalysts for olefin oxidation." Catalysis Today 117, no. 1-3 (September 30, 2006): 15–21. http://dx.doi.org/10.1016/j.cattod.2006.05.022.

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17

Zgoła-Grześkowiak, Agnieszka, Tomasz Grześkowiak, Joanna Zembrzuska, Magdalena Frańska, Rafał Frański, and Zenon Łukaszewski. "Bio-oxidation of tripropylene glycol under aerobic conditions." Biodegradation 19, no. 3 (July 18, 2007): 365–73. http://dx.doi.org/10.1007/s10532-007-9142-6.

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18

Nandy, T., S. N. Kaul, and R. A. Daryapurkar. "Aerobic bio‐oxidation of post‐anaerobic tannery effluents." International Journal of Environmental Studies 43, no. 1 (May 1993): 7–19. http://dx.doi.org/10.1080/00207239308710809.

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19

Xu, Rui, Qian Li, Feiyu Meng, Yongbin Yang, Bin Xu, Huaqun Yin, and Tao Jiang. "Bio-Oxidation of a Double Refractory Gold Ore and Investigation of Preg-Robbing of Gold from Thiourea Solution." Metals 10, no. 9 (September 10, 2020): 1216. http://dx.doi.org/10.3390/met10091216.

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Carbonaceous sulfidic gold ores are commonly double refractory and thus require pretreatment before gold extraction. In this paper, the capacity of pre-bio-oxidation can simultaneously decompose sulfides or deactivate carbonaceous matters (CM) from a double refractory gold ore (DRGO) using pure cultures of A. ferrooxidans or L. ferrooxidans, and a mixed culture containing A. ferrooxidans and L. ferrooxidans was investigated. The results showed that direct thiourea leaching of the as-received DRGO yielded only 28.7% gold extraction, which was due to the encapsulation of sulfides on gold and the gold adsorption of CM. After bio-oxidation, thiourea leaching of the DRGO resulted in gold extraction of over 75–80%. Moreover, bio-oxidation can effectively reduce the adsorption of carbon to gold. XRD, SEM-EDS and FTIR analysis showed that many oxygen-containing groups were introduced on the surface of DRGO during bio-oxidation, while the C=C bond was cleaved and the O–C–O and C–N bonds were degraded, causing a decrease in active sites for gold adsorption. Moreover, passivation materials such as jarosite were formed on the surface of DRGO, which might reduce the affinity of CM for gold in solutions. In addition, the cleavage of the S–S band indicated that sulfides were oxidized by bacteria. This work allows us to explain the applicability of pre-bio-oxidation for degrading both sulfides and CM and increasing gold recovery from DRGO in the thiourea system.

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20

Mukherjee, Shritama, Uttam Ray Chaudhuri, and Patit P. Kundu. "Biotic oxidation of polyethylene using a bio-surfactant produced by B. licheniformis: a novel technique." RSC Advances 5, no. 92 (2015): 75089–97. http://dx.doi.org/10.1039/c5ra13549d.

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21

Li, Li Xin, Qiu Xu Wang, Zhi Wei Song, and Yan Liu. "Introduction of Biofilm with an Analysis of its Typical Process." Advanced Materials Research 850-851 (December 2013): 1234–37. http://dx.doi.org/10.4028/www.scientific.net/amr.850-851.1234.

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The classification and mechanism of the biofilm for treatment wastewater were introduced in this paper. Bio-contact oxidation, a typical biofilm process was described in detail. The example of treatment sewage of Heilongjiang University of science and technology proved that bio-contact oxidation process was more efficient for treatment sewage. It was considered as a wide range of application prospects.

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22

Aguirre, Paulina, Esvar Diaz, and Juan C. Gentina. "Evaluation of Parameters in the Bio-Oxidation Process of Refractory Gold Minerals." Advanced Materials Research 825 (October 2013): 364–67. http://dx.doi.org/10.4028/www.scientific.net/amr.825.364.

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The mining districts located in the western mountain range in the south of Ecuador have gold minerals with refractory characteristics, which do not allow gold recovery by traditional methods used in Ecuador. Therefore, it is necessary to apply some technology that permits to obtain greater metal recovery. Bio-oxidation, as treatment of refractory ores that contain low grade of gold, offers an economic and sustainable alternative for this purpose. The objective of this research was to evaluate the effect of particle size, pulp density and concentration of inoculum and inducer (Fe+2) on the bio-oxidation of refractory gold minerals in order to maximize gold recovery of the bioleached minerals by means of a cyanidation process. The microbial consortium used in this work was collected and isolated from the Portovelo mining district corresponding mostly toAcidithiobacillus ferrooxidansandLeptospirillum ferrooxidansspecies. The Eh, final concentration of ferric ion, total iron and sulfates were measured. Finally, the bio-oxidized material was tested using cyanidation to determine the gold recovery. The results after the cyanidation tests showed that the highest gold recovery was obtained when the bio-oxidation step was conducted with 68-91 µm particle size, 15% pulp density, 20% v/v inoculum and 2 g/L of Fe2+as inducer. At those conditions, gold recovery was 68% compared to 26% obtained when no bio-oxidation step was performed, demonstrating that this process was favorable compared with traditional gold recovery processes

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23

Galletti, Paola, Federica Funiciello, Roberto Soldati, and Daria Giacomini. "Selective Oxidation of Amines to Aldehydes or Imines using Laccase-Mediated Bio-Oxidation." Advanced Synthesis & Catalysis 357, no. 8 (May 13, 2015): 1840–48. http://dx.doi.org/10.1002/adsc.201500165.

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24

Kato, Masaru, Jenny Z. Zhang, Nicholas Paul, and Erwin Reisner. "Protein film photoelectrochemistry of the water oxidation enzyme photosystem II." Chem. Soc. Rev. 43, no. 18 (2014): 6485–97. http://dx.doi.org/10.1039/c4cs00031e.

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25

Zhu, Chunlin, Linzhi Liu, Mengmeng Fan, Lin Liu, Beibei Dai, Jiazhi Yang, and Dongping Sun. "Microbial oxidation of graphite by Acidithiobacillus ferrooxidans CFMI-1." RSC Adv. 4, no. 98 (2014): 55044–47. http://dx.doi.org/10.1039/c4ra09827g.

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26

Quiles-Carrillo, Luis, Sergi Montava-Jordà, Teodomiro Boronat, Chris Sammon, Rafael Balart, and Sergio Torres-Giner. "On the Use of Gallic Acid as a Potential Natural Antioxidant and Ultraviolet Light Stabilizer in Cast-Extruded Bio-Based High-Density Polyethylene Films." Polymers 12, no. 1 (December 23, 2019): 31. http://dx.doi.org/10.3390/polym12010031.

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This study originally explores the use of gallic acid (GA) as a natural additive in bio-based high-density polyethylene (bio-HDPE) formulations. Thus, bio-HDPE was first melt-compounded with two different loadings of GA, namely 0.3 and 0.8 parts per hundred resin (phr) of biopolymer, by twin-screw extrusion and thereafter shaped into films using a cast-roll machine. The resultant bio-HDPE films containing GA were characterized in terms of their mechanical, morphological, and thermal performance as well as ultraviolet (UV) light stability to evaluate their potential application in food packaging. The incorporation of 0.3 and 0.8 phr of GA reduced the mechanical ductility and crystallinity of bio-HDPE, but it positively contributed to delaying the onset oxidation temperature (OOT) by 36.5 °C and nearly 44 °C, respectively. Moreover, the oxidation induction time (OIT) of bio-HDPE, measured at 210 °C, was delayed for up to approximately 56 and 240 min, respectively. Furthermore, the UV light stability of the bio-HDPE films was remarkably improved, remaining stable for an exposure time of 10 h even at the lowest GA content. The addition of the natural antioxidant slightly induced a yellow color in the bio-HDPE films and it also reduced their transparency, although a high contact transparency level was maintained. This property can be desirable in some packaging materials for light protection, especially UV radiation, which causes lipid oxidation in food products. Therefore, GA can successfully improve the thermal resistance and UV light stability of green polyolefins and will potentially promote the use of natural additives for sustainable food packaging applications.

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27

LI, Hong-xu, Chao LI, and Zhi-qian ZHANG. "Decomposition mechanism of pentlandite during electrochemical bio-oxidation process." Transactions of Nonferrous Metals Society of China 22, no. 3 (March 2012): 731–39. http://dx.doi.org/10.1016/s1003-6326(11)61238-7.

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28

Assulin, Nir, Todd A. Schwingle, and Tamar Arbel. "Upgrade of an Oxidation Ditch Using Bio-Mass Carriers." Proceedings of the Water Environment Federation 2009, no. 8 (January 1, 2009): 6965–71. http://dx.doi.org/10.2175/193864709793957670.

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29

Birjandi Nejad, H., L. Blasco, B. Moran, J. Cebrian, J. Woodger, E. Gonzalez, C. Pritts, and J. Milligan. "Bio‐based Algae Oil: an oxidation and structural analysis." International Journal of Cosmetic Science 42, no. 3 (March 6, 2020): 237–47. http://dx.doi.org/10.1111/ics.12606.

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30

Gopalakrishnan, Geetha, N. D. Pradeep Singh, V. Kasinath, M. Siva Rama Krishnan, R. Malathi, and S. S. Rajan. "Microwave- and ultrasound-assisted oxidation of bio-active limonoids." Tetrahedron Letters 42, no. 37 (September 2001): 6577–79. http://dx.doi.org/10.1016/s0040-4039(01)01261-8.

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31

Ruitenberg, R., Carl E. Schultz, and Cees J. N. Buisman. "Bio-oxidation of minerals in air-lift loop bioreactors." International Journal of Mineral Processing 62, no. 1-4 (May 2001): 271–78. http://dx.doi.org/10.1016/s0301-7516(00)00058-2.

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32

Gamez, Patrick, Peter G. Aubel, Willem L. Driessen, and Jan Reedijk. "ChemInform Abstract: Homogeneous Bio-inspired Copper-Catalyzed Oxidation Reactions." ChemInform 33, no. 13 (May 22, 2010): no. http://dx.doi.org/10.1002/chin.200213265.

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33

Urbanek, A., S. Razmadhan, and M. Jaworska. "Procedure for determination of elemental sulphur bio-oxidation rate." Bioprocess Engineering 4, no. 2 (1989): 91–94. http://dx.doi.org/10.1007/bf00373736.

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34

Zhou, Tianhua, Danping Wang, Simon Chun-Kiat Goh, Jindui Hong, Jianyu Han, Jianggao Mao, and Rong Xu. "Bio-inspired organic cobalt(ii) phosphonates toward water oxidation." Energy & Environmental Science 8, no. 2 (2015): 526–34. http://dx.doi.org/10.1039/c4ee03234a.

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35

Hüttl, Regina, Frank Ullrich, Gert Wolf, Alexander Kirchner, Per Löthman, Beate Katzschner, Wolfgang Pompe, and Michael Mertig. "Catalytic Carbon Monoxide Oxidation Using Bio-Templated Platinum Clusters." Catalysis Letters 132, no. 3-4 (August 12, 2009): 383–88. http://dx.doi.org/10.1007/s10562-009-0120-y.

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36

Zhang, Duo-rui, Hong-rui Chen, Jin-lan Xia, Zhen-yuan Nie, Xiao-lu Fan, Hong-chang Liu, Lei Zheng, Li-juan Zhang, and Hong-ying Yang. "Humic acid promotes arsenopyrite bio-oxidation and arsenic immobilization." Journal of Hazardous Materials 384 (February 2020): 121359. http://dx.doi.org/10.1016/j.jhazmat.2019.121359.

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37

Kraleva, Elka, Clarissa P. Rodrigues, Marga-Martina Pohl, Heike Ehrich, and Fabio B. Noronha. "Syngas production by partial oxidation of ethanol on PtNi/SiO2–CeO2 catalysts." Catalysis Science & Technology 9, no. 3 (2019): 634–45. http://dx.doi.org/10.1039/c8cy02418a.

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38

Videla, A. R., L. F. Matamala, S. Uribe, and M. E. Andia. "Ferrous Ion oxidation monitoring by using magnetic resonance imaging for bio-oxidation laboratory testing." Minerals Engineering 106 (May 2017): 108–15. http://dx.doi.org/10.1016/j.mineng.2016.08.020.

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39

Cheng, Ka Yu, Caroline C. Rubina Acuña, Naomi J. Boxall, Jian Li, David Collinson, Christina Morris, Chris A. du Plessis, Natalia Streltsova, and Anna H. Kaksonen. "Effect of Initial Cell Concentration on Bio-Oxidation of Pyrite before Gold Cyanidation." Minerals 11, no. 8 (July 31, 2021): 834. http://dx.doi.org/10.3390/min11080834.

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Bio-oxidation of refractory sulfidic gold minerals has been applied at the commercial scale as a pre-treatment to improve gold yields and reduce chemical consumption during gold cyanidation. In this study, the effect of initial cell concentration on the oxidation of pyritic gold ore was evaluated with four aerated bioreactors at 30 °C with 10% pulp density and pH maintained at 1.4 with NaOH. Results of NaOH consumption and changes in soluble Fe and S concentrations indicated that increasing the initial cell concentration from 2.3 × 107 to 2.3 × 1010 cells mL−1 enhanced pyrite oxidation during the first week. However, by day 18 the reactor with the lowest initial cell concentration showed profound performance enhancement based on soluble Fe and S concentrations, sulfide-S and pyrite contents in the residues, and subsequent gold leaching of the bio-oxidation residues by cyanidation. Overall, the results showed that the cell concentration was clearly beneficial during the initial stages of oxidation (first 7–8 days).

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40

Campuzano, Susana, María Pedrero, Paloma Yáñez-Sedeño, and José Pingarrón. "Antifouling (Bio)materials for Electrochemical (Bio)sensing." International Journal of Molecular Sciences 20, no. 2 (January 19, 2019): 423. http://dx.doi.org/10.3390/ijms20020423.

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(Bio)fouling processes arising from nonspecific adsorption of biological materials (mainly proteins but also cells and oligonucleotides), reaction products of neurotransmitters oxidation, and precipitation/polymerization of phenolic compounds, have detrimental effects on reliable electrochemical (bio)sensing of relevant analytes and markers either directly or after prolonged incubation in rich-proteins samples or at extreme pH values. Therefore, the design of antifouling (bio)sensing interfaces capable to minimize these undesired processes is a substantial outstanding challenge in electrochemical biosensing. For this purpose, efficient antifouling strategies involving the use of carbon materials, metallic nanoparticles, catalytic redox couples, nanoporous electrodes, electrochemical activation, and (bio)materials have been proposed so far. In this article, biomaterial-based strategies involving polymers, hydrogels, peptides, and thiolated self-assembled monolayers are reviewed and critically discussed. The reported strategies have been shown to be successful to overcome (bio)fouling in a diverse range of relevant practical applications. We highlight recent examples for the reliable sensing of particularly fouling analytes and direct/continuous operation in complex biofluids or harsh environments. Opportunities, unmet challenges, and future prospects in this field are also pointed out.

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41

Ma, Wei. "Treatment of Alcohol Wastewater by UASB+Bio-Contact Oxidation+ICEAS Process." Advanced Materials Research 1030-1032 (September 2014): 337–39. http://dx.doi.org/10.4028/www.scientific.net/amr.1030-1032.337.

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Alcohol wastewater is a high concentration organic wastewater, the influent BOD, high COD ratio, biodegradability is very good, should take the treatment process with biological treatment as the core. UASB+Bio-contact oxidation+ICEAS process is a new technology, sewage in the reaction process, in the anaerobic - aerobic - anoxic - aerobic anaerobic alternately, for high concentration organic wastewater by removing effect is very good. UASB+Bio-contact oxidation+ICEAS process , continuous flooding, intermittent drainage, overcomes the shortcomings of SBR process intermittent inflow; ICEAS reaction tank is arranged on the whole system, a sedimentation pool, no single set sedimentation tank, can reduce the amount of sludge.

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42

Ye, Yuewen, Bao Chen, Xin Li, Yue Ai, Jia Sun, Gang Ni, Ling Qin, and Tongqi Ye. "Oxidation of Bio‐Aldehyde and Bio‐Alcohol to Carboxylic Acid by Water over Modified CuZnAl Catalysts." ChemistrySelect 6, no. 9 (March 2021): 1976–83. http://dx.doi.org/10.1002/slct.202100216.

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43

Deng, Chen, Kuang‐Hsu Wu, Xinxin Lu, Soshan Cheong, Richard D. Tilley, Chao‐Lung Chiang, Yu‐Chang Lin, et al. "Ligand‐Promoted Cooperative Electrochemical Oxidation of Bio‐Alcohol on Distorted Cobalt Hydroxides for Bio‐Hydrogen Extraction." ChemSusChem 14, no. 12 (May 13, 2021): 2612–20. http://dx.doi.org/10.1002/cssc.202100722.

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44

Richter, Constanze, Harald Kalka, and Horst Märten. "Potential Bioleaching Effects in In Situ Recovery Applications." Solid State Phenomena 262 (August 2017): 456–60. http://dx.doi.org/10.4028/www.scientific.net/ssp.262.456.

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The potential role of microorganisms in the in-situ recovery (ISR) of technology metals, in particular from reduced ores, is not well understood, but attracts increasing interest worldwide. Based on the feasibility criteria for ISR applications in general, effects of biota on kinetic rates of leaching are systematized. The indirect catalysis of leaching by microbial (re-)oxidation of Fe2+ to Fe3+ as directly acting e- acceptor is a well verified mechanism, however, for practical applications this requires the availability of an oxidant in the leachant. The ex-situ bio-oxidation of Fe in an aerated bioreactor is considered as an alternative. Reactive transport simulations of ISR from sulfidic Cu ores based on kinetic rates as function of pH and oxidation potential (concentration of e- acceptors) in comparison with thermodynamically driven metal dissolution (constrained by oxidation potential) demonstrate the key parameters for (bio-)leaching productivity.

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45

Loeffen, Anthony, Duncan E. Cree, Mina Sabzevari, and Lee D. Wilson. "Effect of Graphene Oxide as a Reinforcement in a Bio-Epoxy Composite." Journal of Composites Science 5, no. 3 (March 23, 2021): 91. http://dx.doi.org/10.3390/jcs5030091.

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Graphene oxide (GO) has gained interest within the materials research community. The presence of functional groups on GO offers exceptional bonding capabilities and improved performance in lightweight polymer composites. A literature review on the tensile and flexural mechanical properties of synthetic epoxy/GO composites was conducted that showed differences from one study to another, which may be attributed to the oxidation level of the prepared GO. Herein, GO was synthesized from oxidation of graphite flakes using the modified Hummers method, while bio-epoxy/GO composites (0.1, 0.2, 0.3 and 0.6 wt.% GO) were prepared using a solution mixing route. The GO was characterized using Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM) and transmission electron microscope (TEM) analysis. The thermal properties of composites were assessed using thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). FTIR results confirmed oxidation of graphite was successful. SEM showed differences in fractured surfaces, which implies that GO modified the bio-epoxy polymer to some extent. Addition of 0.3 wt.% GO filler was determined to be an optimum amount as it enhanced the tensile strength, tensile modulus, flexural strength and flexural modulus by 23, 35, 17 and 31%, respectively, compared to pure bio-epoxy. Improvements in strength were achieved with considerably lower loadings than traditional fillers. Compared to the bio-epoxy, the 0.6 wt.% GO composite had the highest thermal stability and a slightly higher (positive) glass transition temperature (Tg) was increased by 3.5 °C, relative to the pristine bio-epoxy (0 wt.% GO).

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46

Tandon, Swetanshu, Joaquín Soriano-López, Amal C. Kathalikkattil, Guanghua Jin, Paul Wix, Munuswamy Venkatesan, Ross Lundy, Michael A. Morris, Graeme W. Watson, and Wolfgang Schmitt. "A cubane-type manganese complex with H2O oxidation capabilities." Sustainable Energy & Fuels 4, no. 9 (2020): 4464–68. http://dx.doi.org/10.1039/d0se00701c.

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A Mn coordination cluster whose core shares some features with the natural oxygen evolving complex provides a bio-inspired complex that promotes catalytic H₂O oxidation at neutral pH value.

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Shen, Zhengchang, Ganguo Dong, Qiang Chen, and Zhibin Han. "Development of a large industrial bio-oxidation reactor in hydrometallurgy." International Journal of Mineral Processing 142 (September 2015): 134–38. http://dx.doi.org/10.1016/j.minpro.2015.04.001.

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Li, Qian, Kai Yu, Ping Mu, Yan Wen Tian, and Jian Zhong Li. "Preparation of Nano-Iron Oxide Red from Bio-Oxidation Wastewater." Advanced Materials Research 233-235 (May 2011): 794–97. http://dx.doi.org/10.4028/www.scientific.net/amr.233-235.794.

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According to the difference of chemical deposition behavior of arsenic and iron ion in the different pH value solution, valuable element Fe was first recovered by the selective deposition from bio-oxidation wastewater and then it was used to prepare nano-iron oxide red pigment powders. The effect of purifying conditions, calcinations temperature and calcinations time on the product color, the average partical size had been investigated. The crystal structure, particle-size and properties of the nanoparticles were characterized by means of XRD, TEM. The optimal process conditions of the preparation of iron oxide red were: calcinations temperature was 900°C, calcinations time was 120min. Under these conditions, the color of production was bright red. The particles were fully developed, and the average diameter of nanometer particle was about 70.8nm. In the visible light region of 380 to 780nm, the particle possessed good transparency, achieving the standard of GB1863 – 89.

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Li, Hu, Ramakrishna Kotni, Qiuyun Zhang, Saravanamurugan Shunmugavel, and Song Yang. "Chemoselective Oxidation of Bio-Glycerol with Nano-Sized Metal Catalysts." Mini-Reviews in Organic Chemistry 12, no. 2 (February 25, 2015): 162–77. http://dx.doi.org/10.2174/1570193x11666141029002619.

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Qin, Songyan, Yonglei Xie, Lina Guo, Dan Shan, Shumei Li, Lin Xue, Jufang Xiao, and Fang Ma. "Ferrous bio-oxidation byAcidithiobacillus ferrooxidansin hydrochloric acid pickling waste liquor." Desalination and Water Treatment 57, no. 4 (December 6, 2014): 1836–43. http://dx.doi.org/10.1080/19443994.2014.981221.

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