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Wyszukujesz frazę "model wastewater" wg kryterium: Temat


Wyświetlanie 1-6 z 6
Tytuł:
Adsorption of Lead, Zinc, and Nickel Ions from Wastewater Using Coriander Seeds as an Adsorbent
Autorzy:
Shamkhi, Hibatallah Jamil
Hussein, Tamara Kawther
Powiązania:
https://bibliotekanauki.pl/articles/2025731.pdf
Data publikacji:
2021
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
coriander seed
adsorption
heavy metals
isotherm model
wastewater
kinetic model
Opis:
This research focused on using coriander seeds as low cost adsorbent to remove heavy metals ions such as lead, zinc, and nickel from wastewater. Different parameters were studied to obtain the best results, such as pH, contact time, adsorbent dosage, concentration of initial metals and agitation speed. The highest results were obtained at pH 6, 105 min contact time, 1 g/100 ml dosage, 50 mg/l initial concentration of metal ions and 200 rpm agitation speed at temperature 25 ± 2 °C, which were 95.926%, 89.799% and 79.255% for lead, zinc and nickel ions, respectively. The results were also categorized as the Langmuir and Freundlich models, and found that the Freundlich isotherm fit the experimental data better than the Langmuir isotherm. The pseudo-second order was shown to have a high degree of fitness based on kinetic data. The adsorbent was characterized using a variety of techniques, including Fourier transform infrared spectroscopy (FTIR), Field Emission Scanning Electron Microscope (FESEM).
Źródło:
Journal of Ecological Engineering; 2022, 23, 1; 158-168
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Kinetic Model of Wastewater Treatment in Horizontal Flow Flotation Tank
Autorzy:
Antonova, Ekaterina Sergeevna
Sazonov, Dmitry Vasil'evich
Powiązania:
https://bibliotekanauki.pl/articles/123615.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
flotation
mathematical model
wastewater treatment
horizontal flotation tank
Opis:
The flotation wastewater treatment was considered in the paper. The main stages and parameters of flotation process were pointed out. The multistage flotation model considering all main stages of flotation process is presented. However, its main disadvantage is that for the definition of constant characterizing the bubble-particle aggregate formation, the constant value of superficial gas velocity was used, which is incorrect for horizontal flow flotation tank. The modified multistage flotation model with superficial gas velocity as the function of time was proposed. The experiments were carried out on a laboratory setup with a pneumohydraulic system of aeration in order to verify the proposed model. The comparison of experimental and theoretical results proved the importance of superficial gas velocity change consideration.
Źródło:
Journal of Ecological Engineering; 2019, 20, 11; 190-196
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mathematical Prediction of Sorption Processes of Heavy Metals on Cation Exchangers Using the Thomas Model
Autorzy:
Koliehova, Anastasiia
Trokhymenko, Hanna
Gomelya, Mykola
Powiązania:
https://bibliotekanauki.pl/articles/1955572.pdf
Data publikacji:
2021
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
heavy metals
ion exchange
sorption
Thomas model
wastewater treatment
Opis:
On a production scale, it is advisable to use mathematical models for predicting the treatment of effluents from heavy metal ions, which will increase the efficiency of enterprises. The sorption processes of copper, zinc, nickel and cadmium ions on the KU-2-8 cation exchange resin in the acid form at different concentrations were studied in this scientific work. At the same time, the sorption curves calculated were constructed using the Thomas model. The study results showed that this model very clearly describes the sorption processes of metals on the resin. Thus, it can be used to predict the processes of wastewater treatment in production.
Źródło:
Journal of Ecological Engineering; 2021, 22, 9; 232-236
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Ability of Peat in Adsorption of Biogenic Elements from Water Environment
Autorzy:
Matsuska, Oksana
Suchorska, Olga
Gumnitsky, Jaroslaw
Powiązania:
https://bibliotekanauki.pl/articles/124877.pdf
Data publikacji:
2020
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
wastewater
ammonium nitrogen
phosphates
adsorption
peat
adsorption isotherms
coefficient of determination
Langmuir model
Freundlich model
Opis:
The possibilities of using a natural sorbent – peat for the wastewater treatment of ammonium ions and phosphates discharged from runoff into natural reservoirs at high concentrations were investigated. The peat of from the Vereshchytsya-Yanovske deposit of Ukraine of two depths: lowland and upland, was studied. It was established that the lowland samples of peat have higher sorption properties to the investigated pollutants from the aquatic environment than the upland ones. A greater moisture loss in the lowland peat species was observed, as well as the major part of the plant fibers in its structure, which explains its sorption properties. Due to the high content of humic substances, the extraction of cations from the water by peat can occur due to the ion exchange. The adsorption isotherms of both ammonium and phosphate ions on the top and lowland peat species of the Vereshchytsya-Yanovske deposit were constructed and presented. The adsorption isotherm obtained in the experimental studies was used to mathematically establish the isotherm equation, using the Langmuir and Freundlich models to describe the equilibrium of the sorption processes under study. The degree of appropriation of linear equations to the experimental data was evaluated on the basis of the deterministic coefficient, which enabled to determine that in each case the Langmuir equations describe the adsorption isotherms more adequately.
Źródło:
Journal of Ecological Engineering; 2020, 21, 4; 224-230
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Tryptophan-Based Organoclay for Aqueous Naphthol Blue Black Removal – Preparation, Characterization, and Batch Adsorption Studies
Autorzy:
Julinawati, Julinawati
Febriani, Febriani
Mustafa, Irfan
Fathurrahmi, Fathurrahmi
Rahmi, Rahmi
Sheilatina, Sheilatina
Ahmad, Khairunnas
Puspita, Kana
Iqhrammullah, Muhammad
Powiązania:
https://bibliotekanauki.pl/articles/27323827.pdf
Data publikacji:
2023
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
amino acids
bentonite
diazo dye
freundlich
Sips isotherm model
montmorillonite
textile wastewater
Opis:
To prevent the serious threat of textile wastewater, researchers have developed adsorption-based wastewater treatment using cheap, yet effective, adsorbent materials. Of which is natural bentonite, that has the advantages for adsorption due to its porous structure and functional groups but still suffers from its low affinity against anionic and hydrophilic azo dyes. Herein, we aimed of improving the affinity by amino acid tryptophan embedment into the locally isolated natural bentonite collected from Aceh Province, Indonesia. The prepared bentonite samples were characterized using Fourier transform infrared, X-ray diffraction, and scanning electron microscopy. Adsorptive removal was performed on naphthol blue black (NBB) in a batch system with variations of contact time, pH, and adsorbent dosage. The isotherm studies were carried out at optimum conditions (contact time=15 minutes; pH 1; adsorbent dosage=0.2 g) with several models including Langmuir, Freundlich, Sips, and Redlich-Peterson isotherm models. The characterization results revealed that the modification altered its functional group, crystallinity, and micro-surface morphology that add more benefits for adsorption. At optimum conditions, 99.2% NBB has been successfully removed from the aqueous solution. The isotherm studies suggested that the NBB adsorption onto the tryptophane-modified natural bentonite was dependent on Sips isotherm model (R2=0.999; root-mean-square-errors=1.11×10-4 mg/g).
Źródło:
Journal of Ecological Engineering; 2023, 24, 7; 274--284
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Badania symulacyjne procesu fermentacji w układzie komory psychrofilnej i komory mezofilnej w odniesieniu do ilości wytwarzanego biogazu
Anaerobic digestion model analysis of the fermentation process in psychrophilic and mesophilic chamber in accordance with the amount of biogas sourced
Autorzy:
Zdebik, D.
Głodniok, M.
Zawartka, P.
Powiązania:
https://bibliotekanauki.pl/articles/401605.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
model stabilizacji beztlenowej
ścieki dowożone
ścieki mleczarskie
ścieki rzeźnicze
komora psychrofilna
komora mezofilna
anaerobic digestion model
waste transported
dairy wastewater
slaughterhouse waste
psychrophilic chamber
mesophilic chamber
Opis:
W artykule przedstawiono problematykę dotyczącą modelowania stabilizacji beztlenowej osadu czynnego wraz z dodatkowym substratem (ścieki dowożone, mleczarskie, rzeźnicze) w warunkach fermentacji psychrofilnej w zakresie 10–20 °C oraz mezofilnej w temperaturze 35 °C. Badanie symulacyjne przeprowadzono w układzie ciągu dwóch komór fermentacyjnych. Wyniki badań pozwoliły na ocenę skuteczności prowadzenia tych procesów w oddzielnych komorach tj. komorze psychrofilnej i komorze mezofilnej. W badaniach symulacyjnych wskazano na warunki uzyskiwania lotnych kwasów tłuszczowych oraz biogazu w powiązaniu z warunkami pracy komór.
The paper presents problems concerning the modelling of anaerobic sludge stabilization, with the additional substrate (waste transported, dairy butchery sewage) in psychrophilic fermentation conditions in the range 10–20 °C and mesophilic at 35 °C. Simulation test was conducted in the two digesters. Results of the study allowed to evaluate the effectiveness of conducting these processes in separate chambers, i.e. the psychrophilic and mesophilic chamber. During the simulations, terms of obtaining volatile fatty acids and biogas in conjunction with the operating conditions of the chambers indicated.
Źródło:
Inżynieria Ekologiczna; 2015, 42; 63-71
2081-139X
2392-0629
Pojawia się w:
Inżynieria Ekologiczna
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-6 z 6

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