Zobrazeno 1 - 10
of 196
pro vyhledávání: '"Gabriela Ciobanu"'
Publikováno v:
Scientific Study & Research: Chemistry & Chemical Engineering, Biotechnology, Food Industry, Vol 24, Iss 1, Pp 049-060 (2023)
The fly ash wastes (materials rich in silica, aluminum, and iron) could be advanced valorized by using as pozzolanic materials in the formulation of mortar and concrete. The partial hydrolysis of its, during alkali activation process, gel formation,
Externí odkaz:
https://doaj.org/article/379605229e1c46f39a5c67c88ddbfb82
Autor:
Gabriela BUEMA, Nicoleta LUPU, Horia CHIRIAC, Dumitru Daniel HEREA, Lidia FAVIER, Gabriela CIOBANU, Loredana FORMINTE (LITU), Maria HARJA
Publikováno v:
Journal of Applied Life Sciences and Environment, Vol 54, Iss 1(185), Pp 42-50 (2021)
The fly ash generated from a Romanian power plant was used as a starting material in this study. The aim of the study was to obtain a low cost material based on the treatment of fly ash with Fe3O4 for utilization as an adsorbent for cadmium ion remov
Externí odkaz:
https://doaj.org/article/90f7fa8aac764490ad6d24fae0c94f9f
Publikováno v:
Journal of Applied Life Sciences and Environment, Vol 54, Iss 1(185), Pp 70-76 (2021)
This work focused on the use of cellulose acetate polymer for the preparation of porous asymmetric membranes using a phase inversion process. These membranes were characterised by scanning electron microscopy, a bubble-point method and sorption measu
Externí odkaz:
https://doaj.org/article/fe09edb9a74a47c9a1d0d0239eb62a0f
Autor:
Catalina Nutescu Duduman, Consuelo Gómez de Castro, Gabriela Antoaneta Apostolescu, Gabriela Ciobanu, Doina Lutic, Lidia Favier, Maria Harja
Publikováno v:
Water, Vol 14, Iss 17, p 2711 (2022)
TiO2 nanoparticles synthesized by the sol-gel method and doped with Ag were characterized by SEM, EDAX, FTIR, BET, XRD and TEM, then tested in the photocatalytic degradation of methylene blue (MB) under UV irradiation. The experimental results indica
Externí odkaz:
https://doaj.org/article/5a728668bc8346dd9682bb7eb65a6234
Autor:
Maria Harja, Carmen Teodosiu, Dorina Nicolina Isopescu, Osman Gencel, Doina Lutic, Gabriela Ciobanu, Igor Cretescu
Publikováno v:
Materials, Vol 15, Iss 2, p 644 (2022)
Fly ash wastes (silica, aluminum and iron-rich materials) could be smartly valorized by their incorporation in concrete formulation, partly replacing the cement. The necessary binding properties can be accomplished by a simple procedure: an alkali ac
Externí odkaz:
https://doaj.org/article/64deaad41d5a4865b6eeb75a60effcfe
Autor:
Madalina Simona Baltatu, Andrei Victor Sandu, Marcin Nabialek, Petrica Vizureanu, Gabriela Ciobanu
Publikováno v:
Micromachines, Vol 12, Iss 12, p 1447 (2021)
Over the last decade, researchers have been concerned with improving metallic biomaterials with proper and suitable properties for the human body. Ti-based alloys are widely used in the medical field for their good mechanical properties, corrosion re
Externí odkaz:
https://doaj.org/article/6779209c2efc4d1d9c5315a006c292aa
Autor:
Gabriela Buema, Maria Harja, Nicoleta Lupu, Horia Chiriac, Loredana Forminte, Gabriela Ciobanu, Daniel Bucur, Roxana Dana Bucur
Publikováno v:
Water, Vol 13, Iss 2, p 207 (2021)
The initial characteristics of Romanian fly ash from the CET II Holboca power plant show the feasibility of its application for the production of a new material with applicability in environmental decontamination. The material obtained was characteri
Externí odkaz:
https://doaj.org/article/e67360669aef4375addff4185f1454d7
Autor:
Amalia Maria Sescu, Lidia Favier, Doina Lutic, Nicolas Soto-Donoso, Gabriela Ciobanu, Maria Harja
Publikováno v:
Water, Vol 13, Iss 1, p 19 (2020)
This work highlights new insights into the performance of TiO2 doped with noble metal catalysts for the photocatalytic degradation of organic water pollutants. Different samples of titanium dioxide doped with noble metals (Au and Pd) were successfull
Externí odkaz:
https://doaj.org/article/a0a5add6aae44551ac9dbbbedc42df2f
Autor:
Maria Harja, Gabriela Buema, Nicoleta Lupu, Horia Chiriac, Dumitru Daniel Herea, Gabriela Ciobanu
Publikováno v:
Materials, Vol 14, Iss 1, p 63 (2020)
Fly ash/magnetite material was used for the adsorption of copper ions from synthetic wastewater. The obtained material was characterized by scanning electron microscopy (SEM), energy dispersive X-ray analysis (EDAX), X-ray diffractometer (XRD), Fouri
Externí odkaz:
https://doaj.org/article/342b66f08c084b739d0307dd4e52ee03
Autor:
Gabriela Buema, Nicoleta Lupu, Horia Chiriac, Tiberiu Roman, Marieta Porcescu, Gabriela Ciobanu, Daniela Vasilica Burghila, Maria Harja
Publikováno v:
Materials, Vol 13, Iss 16, p 3584 (2020)
Wastes are the sustainable sources of raw materials for the synthesis of new adsorbent materials. This study has as objectives the advanced capitalization of fly ash, by sulphuric acid activation methods, and testing of synthesized materials for heav
Externí odkaz:
https://doaj.org/article/71bcfdb849174ac7930b81cd522bb87e