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  1. Article: Recycling Unused Midazolam Drug as Efficient Corrosion Inhibitor for Copper in Nitric Acid Solution.

    Kellenberger, Andrea / Duca, Delia Andrada / Dan, Mircea Laurentiu / Medeleanu, Mihai

    Materials (Basel, Switzerland)

    2022  Volume 15, Issue 8

    Abstract: The current work explores the potential for recycling unused or expired Midazolam (MID) drug, a benzodiazepine derivative, as an efficient corrosion inhibitor for copper in nitric acid solution. The technical advantage of recycling expired MID drug ... ...

    Abstract The current work explores the potential for recycling unused or expired Midazolam (MID) drug, a benzodiazepine derivative, as an efficient corrosion inhibitor for copper in nitric acid solution. The technical advantage of recycling expired MID drug relates to the avoidance of organic inhibitor production costs and the reduction of disposal costs of the expired medication. A combination of electrochemical methods (potentiodynamic polarization and electrochemical impedance spectroscopy), weight loss, and quantum chemical calculation were used to assess the inhibition mechanism and efficiency of MID. It was found that inhibition efficiency increases with inhibitor concentration, reaching a highest value of 92.9% for a concentration of 10
    Language English
    Publishing date 2022-04-16
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2487261-1
    ISSN 1996-1944
    ISSN 1996-1944
    DOI 10.3390/ma15082918
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article: Efficiency of Expired Drugs Used as Corrosion Inhibitors: A Review.

    Vaszilcsin, Nicolae / Kellenberger, Andrea / Dan, Mircea Laurentiu / Duca, Delia Andrada / Ordodi, Valentin Laurentiu

    Materials (Basel, Switzerland)

    2023  Volume 16, Issue 16

    Abstract: Corrosion inhibitors represent one of the most commonly used methods for significantly reducing the corrosion rate of metals and alloys. Adsorption inhibitors have a wide range of applications in cooling water systems, deicing solutions for aircrafts, ... ...

    Abstract Corrosion inhibitors represent one of the most commonly used methods for significantly reducing the corrosion rate of metals and alloys. Adsorption inhibitors have a wide range of applications in cooling water systems, deicing solutions for aircrafts, airports and ways, etching and degreasing solutions, oil pipelines, paints and coatings and metal processing solutions. Adsorption corrosion inhibitors of metals and alloys are generally organic compounds that contain structures with heteroatoms (N, P, S, As, O) in their molecules, having lone pair electrons or π electrons in aromatic rings or multiple bonds. They enable relatively strong interactions between the metal atoms and organic molecules, resulting in a protective layer of organic molecules adsorbed at the metal-corrosive solution interface. Most molecules of active substances from drugs contain similar structures, which is why many drugs have been already tested as corrosion inhibitors. One of the major disadvantages of using drugs for this purpose is their particularly high price. To overcome this impediment, the possibility of using expired drugs as corrosion inhibitors has been investigated since 2009. The present paper is an exhaustive compilation of the scientific published papers devoted to the use of expired drugs as corrosion inhibitors in various aggressive solutions. The inhibitory efficiencies of expired drugs are presented as a function of the studied metal or alloy and the nature of the aggressive solution, as well as the concentration of the inhibitor in such a solution. Research has especially been focused on mild and carbon steel and less on stainless steel, as well as on some metals such as copper, zinc, nickel, tin and aluminum and its alloys. The experimental methods used to assess the inhibitory efficiencies of expired drugs are briefly discussed. Also, the available information on the stability of the active substances in the drugs is presented, although most authors were not concerned with this aspect. Finally, several actions are revealed that must be undertaken by researchers so that the results obtained in the study of the anticorrosive action of expired drugs can be applied at the industrial level and not remain only an academic concern.
    Language English
    Publishing date 2023-08-10
    Publishing country Switzerland
    Document type Journal Article ; Review
    ZDB-ID 2487261-1
    ISSN 1996-1944
    ISSN 1996-1944
    DOI 10.3390/ma16165555
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Recycling of Expired Ceftamil Drug as Additive in the Copper and Nickel Electrodeposition from Acid Baths.

    Duca, Delia-Andrada / Dan, Mircea Laurențiu / Vaszilcsin, Nicolae

    International journal of environmental research and public health

    2021  Volume 18, Issue 18

    Abstract: Due to the large quantity of expired and unused drugs worldwide, pharmaceutical disposal has become a serious problem that requires increased attention. In the present paper, the study on recycling ceftazidime (CZ) as an additive in copper and nickel ... ...

    Abstract Due to the large quantity of expired and unused drugs worldwide, pharmaceutical disposal has become a serious problem that requires increased attention. In the present paper, the study on recycling ceftazidime (CZ) as an additive in copper and nickel electrodeposition from acid baths is highlighted. CZ is the active substance from expired commercial drug Ceftamil
    MeSH term(s) Baths ; Copper ; Electroplating ; Nickel ; Pharmaceutical Preparations
    Chemical Substances Pharmaceutical Preparations ; Copper (789U1901C5) ; Nickel (7OV03QG267)
    Language English
    Publishing date 2021-09-08
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2175195-X
    ISSN 1660-4601 ; 1661-7827
    ISSN (online) 1660-4601
    ISSN 1661-7827
    DOI 10.3390/ijerph18189476
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article: Corrosion Behavior of Coated Low Carbon Steel in a Simulated PEMFC Environment.

    Avram, Diana Nicoleta / Davidescu, Corneliu Mircea / Hulka, Iosif / Dan, Mircea Laurentiu / Stanciu, Elena Manuela / Pascu, Alexandru / Mirza-Rosca, Julia Claudia

    Materials (Basel, Switzerland)

    2023  Volume 16, Issue 8

    Abstract: Here, potential metallic bipolar plate (BP) materials were manufactured by laser coating NiCr-based alloys with different Ti additions on low carbon steel substrates. The titanium content within the coating varied between 1.5 and 12.5 wt%. Our present ... ...

    Abstract Here, potential metallic bipolar plate (BP) materials were manufactured by laser coating NiCr-based alloys with different Ti additions on low carbon steel substrates. The titanium content within the coating varied between 1.5 and 12.5 wt%. Our present study focussed on electrochemically testing the laser cladded samples in a milder solution. The electrolyte used for all of the electrochemical tests consisted of a 0.1 M Na
    Language English
    Publishing date 2023-04-12
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2487261-1
    ISSN 1996-1944
    ISSN 1996-1944
    DOI 10.3390/ma16083056
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article: Corrosion Resistance of AISI 442 and AISI 446 Ferritic Stainless Steels as a Support for PEMWE Bipolar Plates.

    Dan, Mircea Laurentiu / Kellenberger, Andrea / Duca, Delia / Vaszilcsin, Nicolae / Craciunescu, Corneliu Marius / Mitelea, Ion / Ercuta, Aurel / Lædre, Sigrid / Khoza, Thulile

    Materials (Basel, Switzerland)

    2023  Volume 16, Issue 4

    Abstract: Cost reduction in bipolar plates in proton exchange membrane water electrolyzers has previously been attempted by substituting bulk titanium with austenitic stainless steels protected with highly conductive and corrosion-resistant coatings. However, ... ...

    Abstract Cost reduction in bipolar plates in proton exchange membrane water electrolyzers has previously been attempted by substituting bulk titanium with austenitic stainless steels protected with highly conductive and corrosion-resistant coatings. However, austenitic steels are more expensive than ferritic steels due to their high nickel content. Herein we report on the corrosion resistance of two high chromium ferritic stainless steels, AISI 442 and AISI 446, as an alternative material to manufacture bipolar plates. Electrochemical corrosion tests have shown that AISI 442 and AISI 446 have similar corrosion resistance, while AISI 446 reveals more noble corrosion potential and performs better during potentiostatic stress tests. The current density obtained during polarization at 2 V versus the standard hydrogen electrode (SHE) is 3.3 mA cm
    Language English
    Publishing date 2023-02-10
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2487261-1
    ISSN 1996-1944
    ISSN 1996-1944
    DOI 10.3390/ma16041501
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article: Towards Replacing Titanium with Copper in the Bipolar Plates for Proton Exchange Membrane Water Electrolysis.

    Kellenberger, Andrea / Vaszilcsin, Nicolae / Duca, Delia / Dan, Mircea Laurentiu / Duteanu, Narcis / Stiber, Svenja / Morawietz, Tobias / Biswas, Indro / Ansar, Syed Asif / Gazdzicki, Pawel / Wirkert, Florian J / Roth, Jeffrey / Rost, Ulrich / Brodmann, Michael / Gago, Aldo Saul / Friedrich, K Andreas

    Materials (Basel, Switzerland)

    2022  Volume 15, Issue 5

    Abstract: For proton exchange membrane water electrolysis (PEMWE) to become competitive, the cost of stack components, such as bipolar plates (BPP), needs to be reduced. This can be achieved by using coated low-cost materials, such as copper as alternative to ... ...

    Abstract For proton exchange membrane water electrolysis (PEMWE) to become competitive, the cost of stack components, such as bipolar plates (BPP), needs to be reduced. This can be achieved by using coated low-cost materials, such as copper as alternative to titanium. Herein we report on highly corrosion-resistant copper BPP coated with niobium. All investigated samples showed excellent corrosion resistance properties, with corrosion currents lower than 0.1 µA cm
    Language English
    Publishing date 2022-02-22
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2487261-1
    ISSN 1996-1944
    ISSN 1996-1944
    DOI 10.3390/ma15051628
    Database MEDical Literature Analysis and Retrieval System OnLINE

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