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- Volume 69, Issue 1, 2025
Johnson Matthey Technology Review - Volume 69, Issue 1, 2025
Volume 69, Issue 1, 2025
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A Comprehensive Exploration of Biomass Gasification Technologies Advancing United Nations Sustainable Development Goals: Part I
Authors: M. N. Uddin and N. A. NitheThe pursuit of sustainable energy sources on a worldwide scale is a crucial and pressing matter, with the United Nations Sustainable Development Goals (UNSDGs) offering a comprehensive framework for properly addressing this challenge. This two-part paper provides an overview of the various technologies now available for the process of biomass gasification. Compared to other renewable energy sources, which have undergone significant technological advancements in recent years, the field of biomass conversion is still relatively new. Keeping up with the newest breakthroughs becomes increasingly crucial as new conversion techniques are rapidly being created. In the thermochemical conversion process called ‘biomass gasification’, biomass solid source materials are degraded or incompletely burned in an oxygen-free or oxygen-deficient high-temperature atmosphere, resulting in the production of biomass gas. Part I delves into different biomass gasification techniques, including upstream, gasification and downstream processes, highlighting their importance in transforming biomass into clean and combustible gases.
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A Comprehensive Exploration of Biomass Gasification Technologies Advancing United Nations Sustainable Development Goals: Part II
Authors: M. N. Uddin and N. A. NithePart II of this review focuses on methodologies and protocols employed in biomass gasification, recognising its pivotal role in sustainable energy generation. Additionally, the article discusses the challenges associated with gasification technology, such as tar formation, biomass heterogeneity and uneven biomass supply in different seasons. It emphasises the need for further research and infrastructure development to overcome these barriers and facilitate the efficient distribution and commercialisation of biomass gasification technology. Overall, the scope of the article extends to providing insights into the status, challenges and future prospects of biomass gasification for achieving sustainable energy goals.
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Theoretical Study on Copper Adsorption on Zinc Oxide Surfaces
Authors: Mustafa Al Salmi and Ali Alshammari
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Microplasma-Sprayed Titanium and Hydroxyapatite Coatings on Ti6Al4V Alloy: in vitro Biocompatibility and Corrosion Resistance: Part I
Authors: Darya Alontseva, Yuliya Safarova (Yantsen), Sergii Voinarovych, Aleksei Obrosov, Ridvan Yamanoglu, Fuad Khoshnaw, Assem Nessipbekova, Aizhan Syzdykova, Hasan Ismail Yavuz, Sergii Kaliuzhnyi, Alexander Krasavin, Bagdat Azamatov, Alexandr Khozhanov, Farkhad Olzhayev and Sabine WeißThis two-part paper investigates the bioactivity and mechanical properties of coatings applied to Ti6Al4V, a common titanium alloy used in endoprosthetic implants. Coatings made from hydroxyapatite (HA) powder and commercially pure titanium (CP-Ti) wires were applied using microplasma spraying. The study focuses on the responses of rat mesenchymal stem cells (MSCs), which are essential for bone healing, to these coatings. Part I shows how adjusting the microplasma spraying process allows coatings with varying porosity and surface roughness to be achieved.
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Microplasma-Sprayed Titanium and Hydroxyapatite Coatings on Ti6Al4V Alloy: in vitro Biocompatibility and Corrosion Resistance: Part II
Authors: Darya Alontsev, Yuliya Safarova (Yantsen), Sergii Voinarovych, Aleksei Obrosov, Ridvan Yamanoglu, Fuad Khoshnaw, Assem Nessipbekova, Aizhan Syzdykova, Hasan Ismail Yavuz, Sergii Kaliuzhnyi, Alexander Krasavin, Bagdat Azamatov, Alexandr Khozhanov, Farkhad Olzhayev and Sabine WeißPart II presents the results which show that HA coatings significantly enhance MSC proliferation by 13% compared to the titanium alloy base, while titanium coatings also exhibit an 11% increase. Porosity inversely affects CP-Ti’s elasticity. Coatings with lower porosity demonstrate better corrosion resistance. HA coatings promote osteogenic activity and angiogenesis, which is crucial for implant integration.
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