GLORIA

GEOMAR Library Ocean Research Information Access

X

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
Material
Publisher
Person/Organisation
Language
Years
FID
Subjects(RVK)
  • 11
    Online Resource
    Online Resource
    Photo fermentative biohydrogen production potential using microalgae–activated sludge co-digestion in a sequential flow batch reactor (SFBR)
    Royal Society of Chemistry (RSC) ; 2022
    In:  RSC Advances Vol. 12, No. 46 ( 2022), p. 29785-29792
    Details
    In: RSC Advances, Royal Society of Chemistry (RSC), Vol. 12, No. 46 ( 2022), p. 29785-29792
    Abstract: Biohydrogen (bioH 2 ) is a sustainable energy source that can produce carbon-free energy upon combustion. BioH 2 can be generated from microalgae by photolytic and anaerobic digestion (AD) pathways. The AD pathway faces many challenges when scaling up using different bioreactors, particularly the continuous stirred tank reactor (CSTR) and sequential flow batch reactor (SFBR). Therefore, the performance characteristics of SFBR were analysed in this study using Chlorella vulgaris and domestic wastewater activated sludge (WWAS) co-culture. An organic loading rate (OLR) of 4.7 g COD L −1 day −1 was fed to the SFBR with a hydraulic retention time (HRT) of five days in the presence of light under anaerobic conditions. The pH of the medium was maintained at 6 using a pH controller for the incubation period of 15 days. The maximum bioH 2 concentrations of 421.1 μmol L −1 and 56.6 μmol L −1 were observed in the exponential and steady-state phases, respectively. The effluent had an unusually high amount of acetate of 16.6 g L −1 , which remained high with an average of 11.9 g L −1 during the steady state phase. The amount of bioH 2 produced was found to be inadequate but consistent when operating the SFBR with a constant OLR. Because of the limitations in CSTR handling, operating a SFBR by optimizing OLR and HRT might be more feasible in operation for bioH 2 yield in upscaling. A logistic function model was also found to be the best fit for the experimental data for the prediction of bioH 2 generation using co-culture in the SFBR.
    Type of Medium: Online Resource
    ISSN: 2046-2069
    URL: Article
    DOI: 10.1039/D2RA06014K
    Language: English
    Publisher: Royal Society of Chemistry (RSC)
    Publication Date: 2022
    detail.hit.zdb_id: 2623224-8
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
  • 12
    Online Resource
    Online Resource
    Immobilized Algae for Produced Water Treatment and Desalination
    EJournal Publishing ; 2022
    In:  International Journal of Environmental Science and Development Vol. 13, No. 6 ( 2022), p. 264-269
    Details
    In: International Journal of Environmental Science and Development, EJournal Publishing, Vol. 13, No. 6 ( 2022), p. 264-269
    Abstract: Produced water (PW) is the effluent generated during oil mining and extraction. On average, for every barrel of oil, 4-5 barrels of PW are generated worldwide. The presence of various contaminants in PW makes it toxic. Disposal of untreated PW into oceans and water bodies can cause adverse effects on human health and the environment. Taking into account the large volumes of it being generated, and its effects on the environment, proper treatment is required before reuse or disposal. Microalgal treatment is an effective method for the bioremediation and biodesalination of produced water when acclimatized algal biomass is used for the treatment. However, harvesting this acclimatized high-value algal biomass for reuse and recycling, and the reuse or disposal of produced water is challenging. Thus, the immobilization of microalgae into polymer matrices will be beneficial in solving both problems. Different polymers, both natural and synthetic are used as matrices for immobilizing cells. In this study, experiments were done with alginate and chitosan matrices to immobilize algae. Microalgae enriched and grown in wastewater were acclimatized to three different produced water samples by progressive adaptation in a steadily increasing ratio of produced water. The algae which could adapt and grow in the highest ratio in minimum time were immobilized and used for bioremediation of produced water. The study also evaluated the stability of the matrix in produced water and the treatment efficiency. The results of the study led to the conclusion that produced water is highly toxic for the stability of alginate and chitosan matrices. A more stable matrix has to be determined and experimented with for immobilizing algae and treatment of produced water.
    Type of Medium: Online Resource
    ISSN: 2010-0264
    URL: Article
    DOI: 10.18178/ijesd.2022.13.6.1403
    Language: Unknown
    Publisher: EJournal Publishing
    Publication Date: 2022
    detail.hit.zdb_id: 2715487-7
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
  • 13
    Online Resource
    Online Resource
    The role of oxygen regulation and algal growth parameters in hydrogen production via biophotolysis
    Elsevier BV ; 2022
    In:  Journal of Environmental Chemical Engineering Vol. 10, No. 1 ( 2022-02), p. 107003-
    Details
    In: Journal of Environmental Chemical Engineering, Elsevier BV, Vol. 10, No. 1 ( 2022-02), p. 107003-
    Type of Medium: Online Resource
    ISSN: 2213-3437
    URL: Article
    DOI: 10.1016/j.jece.2021.107003
    Language: English
    Publisher: Elsevier BV
    Publication Date: 2022
    detail.hit.zdb_id: 2710047-9
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
  • 14
    Online Resource
    Online Resource
    A Survey on the Use of Plastic versus Biodegradable Bottles for Drinking Water Packaging in the United Arab Emirates
    MDPI AG ; 2022
    In:  Sustainability Vol. 14, No. 5 ( 2022-02-24), p. 2664-
    Details
    In: Sustainability, MDPI AG, Vol. 14, No. 5 ( 2022-02-24), p. 2664-
    Abstract: Due to intensive utilization and extensive production, plastic waste is becoming a serious threat to the environment and human health. The situation is even worse in countries such as the United Arab Emirates (UAE), where single-use plastic water bottles add to the load of plastic pollution. The main objective of this survey was to assess the extent of bottled water utilization by the UAE residents and their awareness of the environmental concerns arising from single-use plastic bottles. The aim was also to evaluate their willingness to shift towards using biodegradable plastic bottles. This study involved the feedback of 2589 respondents living in the UAE. The eigenvalue decomposition (EVD) was applied to determine the most responsible variables explaining the variability of our data set. A chi-square analysis was also used to determine the significance among the responses. Most of the respondents to this survey were UAE nationals (79.8%) of ages ranging from 21 to 35 years (42%), who were educated, with most holding a university degree (69.6%). Regardless of their gender, age, occupation, education, and income, a large group of respondents (40.7%) was concerned about the impact of their purchased items on the environment; however, the frequency of plastic products recycled was observed to be low (49.7%). According to the findings of this survey, 42.4% of the respondents were likely to purchase 100% biodegradable bottles, and about 70% of the respondents expressed a willingness to spend at least AED 1 more for purchasing 100% biodegradable bottles.
    Type of Medium: Online Resource
    ISSN: 2071-1050
    URL: Article
    DOI: 10.3390/su14052664
    Language: English
    Publisher: MDPI AG
    Publication Date: 2022
    detail.hit.zdb_id: 2518383-7
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
  • 15
    Online Resource
    Online Resource
    Thermal Regeneration of Activated Carbon Used as an Adsorbent for Hydrogen Sulfide (H2S)
    MDPI AG ; 2023
    In:  Sustainability Vol. 15, No. 8 ( 2023-04-10), p. 6435-
    Details
    In: Sustainability, MDPI AG, Vol. 15, No. 8 ( 2023-04-10), p. 6435-
    Abstract: The treatment of gaseous contaminants, such as hydrogen sulfide (H2S), is often carried out with adsorbent materials that are disposed of after saturation. The reuse of such materials promotes sustainability and the reduction in unnecessary waste. Granular activated carbon (GAC) is a well-known adsorbent used to capture gaseous H2S which can be reused. It is hypothesized that it can also concentrate contaminants for future treatment, thereby reducing secondary treatment costs. Cyclic adsorption/desorption experiments were completed with samples of GAC to investigate the feasibility of implementing the concept of repeated H2S adsorption/desorption in the construction of a pilot odor control device. A column filled with GAC was exposed to a stream of H2S gas and then heated to 500 °C to regenerate the carbon. The concentration of H2S at the inlet and outlet of the column was measured at regular intervals. Three samples of GAC had an average adsorption efficiency of 82% over the course of three cycles and were regenerated to 70% of initial adsorptive capacity after one cycle, and 60% after two cycles. These results indicate that after being saturated with H2S, GAC can be regenerated at high temperatures, evidence that H2S may become concentrated during the process. Additional characterization experiments confirmed that the sulfur content of the carbon increased after adsorption and decreased after thermal regeneration. The procedures demonstrated in this experiment were further utilized with a pilot device designed to provide a low-cost method for reducing odors in landfill gas.
    Type of Medium: Online Resource
    ISSN: 2071-1050
    URL: Article
    DOI: 10.3390/su15086435
    Language: English
    Publisher: MDPI AG
    Publication Date: 2023
    detail.hit.zdb_id: 2518383-7
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
  • 16
    Online Resource
    Online Resource
    Selective Oxidation Using Flame Aerosol Synthesized Iron and Vanadium-Doped Nano-TiO 2
    Hindawi Limited ; 2011
    In:  Journal of Nanotechnology Vol. 2011 ( 2011), p. 1-11
    Details
    In: Journal of Nanotechnology, Hindawi Limited, Vol. 2011 ( 2011), p. 1-11
    Abstract: Selective photocatalytic oxidation of 1-phenyl ethanol to acetophenone using titanium dioxide (TiO 2 ) raw and doped with Fe or V, prepared by flame aerosol deposition method, was investigated. The effects of metal doping on crystal phase and morphology of the synthesized nanostructured TiO 2 were analyzed using XRD, TEM, Raman spectroscopy, and BET nitrogen adsorbed surface area measurement. The increase in the concentration of V and Fe reduced the crystalline structure and the anatase-to-rutile ratios of the synthesized TiO 2 . Synthesized TiO 2 became fine amorphous powder as the Fe and V concentrations were increased to 3 and 5%, respectively. Doping V and Fe to TiO 2 synthesized by the flame aerosol increased photocatalytic activity by 6 folds and 2.5 folds, respectively, compared to that of pure TiO 2 . It was found that an optimal doping concentration for Fe and V were 0.5% and 3%, respectively. The type and concentration of the metal dopants and the method used to add the dopant to the TiO 2 are critical parameters for enhancing the activity of the resulting photocatalyst. The effects of solvents on the photocatalytic reaction were also investigated by using both water and acetonitrile as the reaction medium.
    Type of Medium: Online Resource
    ISSN: 1687-9503 , 1687-9511
    URL: Article
    DOI: 10.1155/2011/209150
    Language: English
    Publisher: Hindawi Limited
    Publication Date: 2011
    detail.hit.zdb_id: 2523901-6
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
  • 17
    Online Resource
    Online Resource
    Groundwater remediation using zero-valent iron nanoparticles (nZVI)
    Elsevier BV ; 2021
    In:  Groundwater for Sustainable Development Vol. 15 ( 2021-11), p. 100694-
    Details
    In: Groundwater for Sustainable Development, Elsevier BV, Vol. 15 ( 2021-11), p. 100694-
    Type of Medium: Online Resource
    ISSN: 2352-801X
    URL: Article
    DOI: 10.1016/j.gsd.2021.100694
    Language: English
    Publisher: Elsevier BV
    Publication Date: 2021
    detail.hit.zdb_id: 2848215-3
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
  • 18
    Online Resource
    Online Resource
    Achieving Stable Biological Oxidation of Erratic Waste Gas Streams by Utilizing Cyclic Adsorption/Desorption Beds
    Sycamore Global Publications ; 2010
    In:  Journal of Advanced Oxidation Technologies Vol. 13, No. 1 ( 2010-01-1)
    Details
    In: Journal of Advanced Oxidation Technologies, Sycamore Global Publications, Vol. 13, No. 1 ( 2010-01-1)
    Type of Medium: Online Resource
    ISSN: 2371-1175 , 1203-8407
    URL: Article
    DOI: 10.1515/jaots-2010-0101
    Language: Unknown
    Publisher: Sycamore Global Publications
    Publication Date: 2010
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
  • 19
    Online Resource
    Online Resource
    ANALYSIS OF FLOWRATE, SULFATE, AND TOTAL SULFUR PATTERN IN WASTEWATER INLET TANKS FOR HS MANAGEMENT
    ISEC Press ; 2022
    In:  Proceedings of International Structural Engineering and Construction Vol. 9, No. 1 ( 2022-6)
    Details
    In: Proceedings of International Structural Engineering and Construction, ISEC Press, Vol. 9, No. 1 ( 2022-6)
    Abstract: Hydrogen sulfide (H2S) is a major source of concrete corrosion in a wastewater treatment plant (WWTP) that causes significant financial losses. Variations in the flow rate and composition of incoming wastewater has significant impact on H2S generation. During anaerobic conditions, sulfur present in excreta and sulfate from rainfall become the source of electron acceptors for the conversion of sulfate to sulfide in wastewater. Sulfide, in turn, is converted to H2S and later to sulfuric acid which leads to concrete corrosion. Flowrate directly relates to the amount of wastewater entering the plant. Hence understanding flow rate pattern will help to analyze H2S generation. Flow rate and H2S concentrations were recorded every two-hours for four days in a wastewater treatment plant. Wastewater samples of 50ml were collected at each sampling event coinciding the recording intervals. Samples were analyzed for sulphate and sulfide concentrations using HACH© kits. Total sulfur was calculated from the collected data. The correlations were analyzed using Minitab©. It was found out that average flow rate was negatively related to average H2S concentration. H2S concentration is higher during night when the flow rate is lower, which is a result of greater resident time. Flowrate changes in a cyclic manner throughout the day. During night, sulfate and total sulfur concentrations are higher, H2S concentration is maximum during this time. It is contrariwise during the day. Sulfate and total sulfide follow a pattern that is similar to that of flowrate. Analyzing these parameters is a critical step in successfully modelling H2S generation.
    Type of Medium: Online Resource
    ISSN: 2644-108X
    URL: Article
    DOI: 10.14455/10.14455/ISEC.2022.9(1).AAW-03
    Language: English
    Publisher: ISEC Press
    Publication Date: 2022
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
  • 20
    Online Resource
    Online Resource
    ANALYSIS OF FLOWRATE, SULFATE, AND TOTAL SULFUR PATTERN IN WASTEWATER INLET TANKS FOR HS MANAGEMENT
    ISEC Press ; 2022
    In:  Proceedings of International Structural Engineering and Construction Vol. 9, No. 1 ( 2022-7)
    Details
    In: Proceedings of International Structural Engineering and Construction, ISEC Press, Vol. 9, No. 1 ( 2022-7)
    Abstract: Hydrogen sulfide (H2S) is a major source of concrete corrosion in a wastewater treatment plant (WWTP) that causes significant financial losses. Variations in the flow rate and composition of incoming wastewater has significant impact on H2S generation. During anaerobic conditions, sulfur present in excreta and sulfate from rainfall become the source of electron acceptors for the conversion of sulfate to sulfide in wastewater. Sulfide, in turn, is converted to H2S and later to sulfuric acid which leads to concrete corrosion. Flowrate directly relates to the amount of wastewater entering the plant. Hence understanding flow rate pattern will help to analyze H2S generation. Flow rate and H2S concentrations were recorded every two-hours for four days in a wastewater treatment plant. Wastewater samples of 50ml were collected at each sampling event coinciding the recording intervals. Samples were analyzed for sulphate and sulfide concentrations using HACH© kits. Total sulfur was calculated from the collected data. The correlations were analyzed using Minitab©. It was found out that average flow rate was negatively related to average H2S concentration. H2S concentration is higher during night when the flow rate is lower, which is a result of greater resident time. Flowrate changes in a cyclic manner throughout the day. During night, sulfate and total sulfur concentrations are higher, H2S concentration is maximum during this time. It is contrariwise during the day. Sulfate and total sulfide follow a pattern that is similar to that of flowrate. Analyzing these parameters is a critical step in successfully modelling H2S generation.
    Type of Medium: Online Resource
    ISSN: 2644-108X
    URL: Article
    DOI: 10.14455/ISEC.2022.9(1).AAW-03
    Language: English
    Publisher: ISEC Press
    Publication Date: 2022
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Online Resource
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...