Browsing by Author "Harja, Maria"

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  • Harja, Maria; Ciocinta, Ramona-Carla; Ondrasek, Gabrijel; Bucur, Daniel; Dirja, Marcel (MDPI, 2023-02-15)
    This study aimed to analyse the bioaccumulation of heavy metal ions in plants of spontaneous flora. An urban area was established from which soil samples were taken and analyses were performed on the content of heavy metal ...
  • Harja, Maria; Kotova, Olga; Samuil, Costel; Ciocinta, Ramona-Carla; Ciobanu, Gabriela (“Ion Ionescu de la Brad” University of Agricultural Sciences and Veterinary Medicine, Iaşi, 2017)
    Power plant ash and modified ash were used as the adsorbent, in this study, for the removal of textiledye direct green 6 (DG6) from aqueous solutions. The adsorbent was prepared by the alkaline attack in aqueous medium ...
  • Ciobanu, Gabriela; Favier, Lidia; Harja, Maria ("Ion Ionescu de la Brad" University of Agricultural Sciences and Veterinary Medicine, Iași, 2021-03-31)
    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 ...
  • Buema, Gabriela; Lupu, Nicoleta; Chiriac, Horia; Herea, Dumitru-Daniel; Favier, Lidia; Ciobanu, Gabriela; Forminte, Loredana; Harja, Maria ("Ion Ionescu de la Brad" University of Agricultural Sciences and Veterinary Medicine, Iași, 2021-03-31)
    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 ...
  • Favier, Lidia; Simion, Andrei-Ionuț; Hlihor, Raluca-Maria; Fekete-Kertesz, Ildiko; Molnar, Monika; Harja, Maria; Vial, Christophe (Elsevier, 2022-12-13)
    Heterogeneous photocatalysis has been increasingly investigated during the past years and has been recognized as a promising technique for clean and safe water purification. The current study exploits the advantage of this ...
  • Buema, Gabriela; Lupu, Nicoleta; Chiriac, Horia; Ciobanu, Gabriela; Bucur, Roxana-Dana; Bucur, Daniel; Favier, Lidia; Harja, Maria (Elsevier B.V., 2021-03-18)
    Five adsorbents based on fly ash treated with NaOH for the adsorption of cadmium ion from aqueous solutions were investigated. The materials were characterized using scanning electron microscopy (SEM), Fourier trans form ...
  • Harja, Maria; Guriță, Ana-Andreea; Barbuta, Marinela; Ciocinta, Ramona-Carla (“Ion Ionescu de la Brad” University of Agricultural Sciences and Veterinary Medicine, Iaşi, 2011)
    The capitalisation of ash from power plant for obtaining zeolites is very interesting, because obtained products have high environmental applications. Zeolites may be easily obtained from ash by direct alkaline conversion ...