LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 4 of total 4

Search options

  1. Article: Local volumetric mass transfer coefficient estimation for Scenedesmus microalgae culture in a cylindrical airlift photobioreactor

    Ojah, Aastha / Sabri, Laith S / Aldahhan, Muthanna H

    Journal of chemical technology and biotechnology. 2021 Mar., v. 96, no. 3

    2021  

    Abstract: A plug flow model without axial dispersion was utilized to evaluate the mass transfer coefficient in Scenedesmus microalgae culture grown in a split airlift photobioreactor. The local volumetric mass transfer coefficient and the local interfacial area ... ...

    Abstract A plug flow model without axial dispersion was utilized to evaluate the mass transfer coefficient in Scenedesmus microalgae culture grown in a split airlift photobioreactor. The local volumetric mass transfer coefficient and the local interfacial area also were calculated at various gas velocity (1.0, 2.0 and 2.8 cm s–¹). In the riser and the downcomer section, the local volumetric mass transfer coefficients were dominated by interfacial area and gas holdup values, and were favored by lower optical densities (ODs) and higher values of superficial gas velocities of microalgae cultures. The OD effects on the liquid side and the local volumetric mass transfer coefficient were analyzed over the growth period divided into three zones: Zone I, for OD ≤0.08; Zone II, OD between 0.08 and 0.19; and Zone III, OD between 0.19 and 0.30. Although the local volumetric mass transfer coefficient was constant axially in the riser, it decreased axially on moving through the downcomer. The estimated local volumetric mass transfer coefficient was found always to be higher than that estimated from the available correlations. © 2020 Society of Chemical Industry (SCI)
    Keywords Scenedesmus ; algae culture ; liquids ; mass transfer ; microalgae ; models ; photobioreactors
    Language English
    Dates of publication 2021-03
    Size p. 764-774.
    Publishing place John Wiley & Sons, Ltd.
    Document type Article
    Note JOURNAL ARTICLE
    ZDB-ID 1479465-2
    ISSN 1097-4660 ; 0268-2575
    ISSN (online) 1097-4660
    ISSN 0268-2575
    DOI 10.1002/jctb.6590
    Database NAL-Catalogue (AGRICOLA)

    More links

    Kategorien

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

  2. Article: Integration of dynamic growth modeling and hydrodynamics in an internal‐loop split photobioreactor

    Sabri, Laith S / Ojha, Aastha / Sultan, Abbas J / Aldahhan, Muthanna H

    Journal of chemical technology and biotechnology. 2022 May, v. 97, no. 5

    2022  

    Abstract: In this study, new high‐quality experimental data for culturing green microalgae Scenedesmus in tubular and cylindrical split airlift photobioreactors were obtained under different operating conditions. The obtained experimental data of culturing ... ...

    Abstract In this study, new high‐quality experimental data for culturing green microalgae Scenedesmus in tubular and cylindrical split airlift photobioreactors were obtained under different operating conditions. The obtained experimental data of culturing microalgae Scenedesmus in a tubular photobioreactor were used for determining the kinetic parameters of the photosynthetic reaction. On the other hand, the culturing of green microalgae in a split airlift photobioreactor was used to measure the microalgae cell trajectory using an advanced radioactive particle tracking (RPT) technique. The obtained results in terms of kinetic parameters of the photosynthetic reaction and microalgae cell trajectory were integrated for the first time to obtain the three‐state dynamic growth model. This integration between dynamic growth and cell trajectories will provide a direct and comprehensive tool for photobioreactor analysis, which is essential for proper and efficient reactor design and scale‐up for large‐scale biomass production. © 2021 Society of Chemical Industry (SCI).
    Keywords Scenedesmus ; biomass production ; growth models ; hydrodynamics ; microalgae ; photobioreactors ; photosynthesis
    Language English
    Dates of publication 2022-05
    Size p. 1112-1127.
    Publishing place John Wiley & Sons, Ltd.
    Document type Article
    Note JOURNAL ARTICLE
    ZDB-ID 1479465-2
    ISSN 1097-4660 ; 0268-2575
    ISSN (online) 1097-4660
    ISSN 0268-2575
    DOI 10.1002/jctb.6996
    Database NAL-Catalogue (AGRICOLA)

    More links

    Kategorien

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

  3. Article ; Online: Correction: Mechanism and principle of doping: realizing of silver incorporation in CdS thin film

    Najm, A S / Aljuhani, Abdulwahab / Naeem, Hasanain Salah / Sopian, K / Ismail, Raid A / Holi, Araa Mebdir / Sabri, Laith S / Abdullah Al-Zahrani, Asla / Rasheed, Rashed Taleb / Moria, Hazim

    RSC advances

    2022  Volume 12, Issue 50, Page(s) 32327

    Abstract: This corrects the article DOI: 10.1039/D2RA04790J.]. ...

    Abstract [This corrects the article DOI: 10.1039/D2RA04790J.].
    Language English
    Publishing date 2022-11-11
    Publishing country England
    Document type Published Erratum
    ISSN 2046-2069
    ISSN (online) 2046-2069
    DOI 10.1039/d2ra90111k
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

  4. Article ; Online: Mechanism and principle of doping: realizing of silver incorporation in CdS thin film

    Najm, A S / Aljuhani, Abdulwahab / Naeem, Hasanain Salah / Sopian, K / Ismail, Raid A / Holi, Araa Mebdir / Sabri, Laith S / Abdullah Al-Zahrani, Asla / Rasheed, Rashed Taleb / Moria, Hazim

    RSC advances

    2022  Volume 12, Issue 46, Page(s) 29613–29626

    Abstract: A high-quality buffer layer serves as one of the most significant issues that influences the efficiency of solar cells. Doping in semiconductors is an important strategy that can be used to control the reaction growth. In this study, the influence of Ag ... ...

    Abstract A high-quality buffer layer serves as one of the most significant issues that influences the efficiency of solar cells. Doping in semiconductors is an important strategy that can be used to control the reaction growth. In this study, the influence of Ag doping on the morphological, optical and electrical properties of CdS thin films have been obtained. Herein, we propose the mechanism of CdS film formation with and without Ag ions, and we found that changes in the reaction of preparing CdS by the chemical bath deposition (CBD) method cause a shift in the geometric composition of the CdS film. XRD showed that the position of peaks in the doped films are displaced to wider angles, indicating a drop in the crystal lattice constant. The optical analysis confirmed direct transition with an optical energy gap between 2.10 and 2.43 eV. The morphological studies show conglomerates with inhomogeneously distributed spherical grains with an increase of the Ag ratio. The electrical data revealed that the annealed Ag-doped CdS with 5% Ag has the highest carrier concentration (3.28 × 10
    Language English
    Publishing date 2022-10-17
    Publishing country England
    Document type Journal Article
    ISSN 2046-2069
    ISSN (online) 2046-2069
    DOI 10.1039/d2ra04790j
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

To top