Informacja

Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

English (EN)·Polski (PL)·Yкраїнський (UK)
Przejdź do strony domowej biblioteki Centralna Biblioteka Wojskowa Link otwiera się w nowym oknie Logo biblioteki Prolib Integro - strona głównaCentralna Biblioteka Wojskowa

Wyszukujesz frazę "reactive adsorption" wg kryterium: Temat

  Lista filtrów
Wyrównaj
    Wyświetlanie 1-11 z 11
    Tytuł:
    Adsorption Kinetics of Reactive Dyes on Ash from Town Heating Plant
    Autorzy:
    Djordjevic, D.
    Stojiljkovic, D.
    Smelcerovic, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/205104.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    kinetics
    reactive dye
    adsorption
    ashes
    Opis:
    In order to investigate the mechanism of adsorption of reactive dyes from the textile industry on ash from heating plant produced by brown coal combustion, some characteristic sorption constants are determined using Langergren adsorption equations for pseudo-first and pseudo-second order. Combined kinetic models of pseudo-first order and pseudo-second order can provide a simple but satisfactory explanation of the adsorption process for a reactive dye. According to the characteristic diagrams and results of adsorption kinetic parameters of reactive dyes on ashes, for the applied amounts of the adsorbents and different initial dye concentrations, it can be concluded that the rate of sorption is fully functionally described by second order adsorption model. According to the results, the rate constant of pseudo-second order decreases with increasing initial dye concentration and increases with increasing amount of adsorbent – ash.
    Źródło:
    Archives of Environmental Protection; 2014, 40, 3; 123-135
    2083-4772
    2083-4810
    Pojawia się w:
    Archives of Environmental Protection
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Adsorption of reactive dyes and their mixtures on activated carbon. Kinetics, equilibrium and thermodynamic evaluation
    Autorzy:
    Kouhail, Meriem
    Elahmadi, Zakia
    Benayada, Abbes
    Dewil, Raf
    Powiązania:
    https://bibliotekanauki.pl/articles/206912.pdf
    Data publikacji:
    2020
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    adsorption efficiency
    adsorption kinetics
    Langmuir isotherm
    reactive dye
    COD
    efektywność adsorpcji
    kinetyka adsorpcji
    izoterma Langmuira
    barwnik reaktywny
    ChZT
    Opis:
    The adsorption of three reactive dyes (Reactive Bezactiv Yellow (RBY), Reactive Bezactiv Blue (RBB) and Reactive Bezactiv (RBR)) on a commercially available activated carbon (CAC) has been evaluated. It was shown that CAC is capable to effectively remove these dyes from a solution. The adsorption increased with higher contact time, adsorbent dose, and initial dye concentration. The data indicated that the adsorption kinetics of dyes on CAC followed a pseudo-second order model. The adsorption isotherms followed the Langmuir isotherm model. Evaluation of thermodynamic parameters revealed that the adsorption process is endothermic for all dyes and spontaneous in a single system and became spontaneous in mixture systems at high temperature, expect RBY and RBB in the ternary mixture. Adsorption was higher for RBY, followed by RBB, and was lowest for RBR. The total adsorption efficiency was confirmed by chemical oxygen demand (COD) measurements.
    Źródło:
    Environment Protection Engineering; 2020, 46, 2; 5-24
    0324-8828
    Pojawia się w:
    Environment Protection Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Hydrocarbons removal from underground coal gasification water by organic adsorbents
    Autorzy:
    Lutynski, M.
    Suponik, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/110448.pdf
    Data publikacji:
    2014
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    underground coal gasification
    permeable reactive barrier
    Langmuir adsorption isotherm
    Opis:
    The main problems in the case of the undergorund coal gasificiation process is the possible pollution of surrounding aquifers. The underground gasification cavity is a source of both gaseous and liquid pollutants and these are mainly aromatic hydrocarbons, phenols, heavy metals and others. In order to prevent underground water from pollution a permeable reactive barrier was proposed. The filling was granulated activated carbon and SPILL-SORB (peat) – two commonly available sorbents adequate for hydrocarbons removal. The wastewater (synthetic solution which simulated groundwater contaminated with the UCG products) was prepared by mixing distilled water with desired amounts of substances such as phenols, benzene, toluene, xylene, naphthalene etc. Batch tests were performed in order to measure sorption of phenols and benzene from the post-UCG water on the mentioned sorbents. Experimental results were fitted with linear and non-linear Freundlich and Langmuir isotherm models. The obtained data showed that removal of phenols and benzene in case of GAC was much more efficient. However, sorption was lower than in the case of literature data and can be explained by complex composition of the solution and pre-treatment of the samples. The Langmuir model gave a better fit in the case of GAC, whereas Freundlich isotherm model was matching the data better in case of SPILL-SORB.
    Źródło:
    Physicochemical Problems of Mineral Processing; 2014, 50, 1; 289-298
    1643-1049
    2084-4735
    Pojawia się w:
    Physicochemical Problems of Mineral Processing
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Kinetic and equilibrium studies on adsorption of Reactive Blue 19 dye from aqueous solutions by nanohydroxyapatite adsorbent
    Autorzy:
    Ciobanu, G.
    Barna, S.
    Harja, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/204660.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Reactive Blue 19 dye
    hydroxyapatite
    adsorption
    Opis:
    In the present study the adsorption of Reactive Blue 19 dye on the hydroxyapatite (HAp) nanopowders was investigated. The batch adsorption experiments were performed by monitoring the adsorbent dosage, contact time, dye solution concentration, pH and temperature. At pH 3 and 20ºC, high dye removal rates of about 95.58% and 86.95% for the uncalcined and calcined nanohydroxyapatites, respectively, were obtained. The kinetic studies indicated the dye adsorption onto nanohydroxyapatite samples to follow a pseudo-second order model. The Langmuir isotherm was found to be the best to represent the equilibrium with experimental data. The maximum adsorption capacity of uncalcined and calcined nanohydroxyapatite samples has been found to be 90.09 mg/g and 74.97 mg/g, respectively.
    Źródło:
    Archives of Environmental Protection; 2016, 42, 2; 3-11
    2083-4772
    2083-4810
    Pojawia się w:
    Archives of Environmental Protection
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Photocatalytic removal of reactive yellow 145 dye from simulated textile wastewaters over supported (Co, Ni)3O4/Al2O3 co-catalyst
    Autorzy:
    Mohammad, E. J.
    Lafta, A. J.
    Kahdim, S. H.
    Powiązania:
    https://bibliotekanauki.pl/articles/778209.pdf
    Data publikacji:
    2016
    Wydawca:
    Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
    Tematy:
    supported co-catalyst
    photocatalytic removal of RY 145
    removal of RY 145 from wastewaters
    reactive yellow 145
    adsorption processes
    Opis:
    The supported co-catalyst (Co, Ni)3O4/Al2O3 was prepared via using a co-precipitation method. Three sets of these materials were prepared by calcination at three different temperatures 500, 600, and 700°C. Crystal structure of the prepared materials was investigated using powder X-rays diffraction (PXRD), Fourier transform infrared spectroscopy (FTIR), Atomic force microscope (AFM), and specific surface area (BET). The activity of the prepared catalysts was investigated by following both of photocatalytic and adsorption removal of Reactive yellow 145 dye (RY 145) from simulated industrial wastewaters. In this study, different reaction conditions were performed such as effect of pH of the reaction mixture, mass dosage of the used catalyst, and effect of temperature. In addition to that adsorption isotherms and reaction kinetics were investigated. Also the activity of these catalysts were investigated after cyclization of the used catalysts.
    Źródło:
    Polish Journal of Chemical Technology; 2016, 18, 3; 1-9
    1509-8117
    1899-4741
    Pojawia się w:
    Polish Journal of Chemical Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Physicochemical Properties of Marl and Travertine and their Thermally Modified Forms in the Perspective of Phosphorus Removal from Wastewater
    Autorzy:
    Gubernat, Sylwia
    Masłoń, Adam
    Czarnota, Joanna
    Koszelnik, Piotr
    Powiązania:
    https://bibliotekanauki.pl/articles/24201764.pdf
    Data publikacji:
    2023
    Wydawca:
    Polskie Towarzystwo Inżynierii Ekologicznej
    Tematy:
    wastewater treatment
    green chemistry
    ecotechnology
    reactive material
    adsorption
    phosphorus
    Opis:
    The paper presents physicochemical studies of nine reactive materials for removing phosphorus from wastewater and water. The materials under analysis are raw forms of marl and travertine along with their thermally treated forms at temperatures of 500 °C, 650 °C, 700 °C (travertine), 700 °C, 900 °C, 1000 °C (marl) and the commercial material Polonite®. The scope of the research included morphological analysis and elemental composition, specific surface area, pore volume and diameter, losses on ignition and the amount of elements leached from materials. The results of the research allowed assessing the impact of physicochemical properties and thermal modification on the efficiency of phosphorus binding by these materials. All the tested sorbents show the highest calcium content among the elements with the ability to bind phosphorus. The size of the specific surface does not determine the efficiency of phosphorus retention by the tested materials; therefore it is advisable to study the mechanism of its binding. The thermal modification process, along with the increase in the treatment temperature, improves the regularity of marl and travertine structures, which also manifests itself in increasing the efficiency of phosphorus removal.
    Źródło:
    Journal of Ecological Engineering; 2023, 24, 5; 56--65
    2299-8993
    Pojawia się w:
    Journal of Ecological Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Sorption-enhanced steam methane reforming (SE-SMR) – a review: reactor types, catalyst and sorbent characterization, process modeling
    Autorzy:
    Cherbański, R.
    Molga, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/185562.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    reactive adsorption
    adsorptive reactors
    reactor modeling
    sorption-enhanced reaction
    process SERP
    steam methane reforming (SMR)
    reaktywna adsorpcja
    modelowanie reaktora
    reakcja zwiększona przez sorpcję
    proces (SERP)
    reformowanie metanu parowego (SMR)
    Opis:
    In this review, research carried out on sorption-enhanced steam methane reforming (SESMR) process is presented and discussed. The reactor types employed to carry out this process, fixed packed bed and fluidized bed reactors, are characterized as well as their main operating conditions indicated. Also the concepts developed and investigations performed by the main research groups involved in the subject are summarized. Next the catalysts and CO2 sorbents developed to carry out SE-SMR are characterized and the relationships describing the reaction and sorption kinetics are collected. A general approach to model the process is presented as well as results obtained for a calculation example, which demonstrate the main properties of SE-SMR.
    Źródło:
    Chemical and Process Engineering; 2018, 39, 4; 427--448
    0208-6425
    2300-1925
    Pojawia się w:
    Chemical and Process Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Symulacja zjawisk zachodzących w barierach reaktywnych ograniczających wpływ odpadów pogórniczych na środowisko
    Simulation of sorption possesses on permeable reactive barriers using for limiting contaminants release from wastes of coal mining
    Autorzy:
    Łączny, J. M.
    Iwaszenko, S.
    Słowikowski, D.
    Huzarski, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/349222.pdf
    Data publikacji:
    2007
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    odpady
    popiół lotny
    odpady z kopalni węgla kamiennego
    zanieczyszczenie
    zanieczyszczenia z wód gruntowych
    modelowanie matematyczne
    sorpcja
    adsorpcja
    sorption
    adsorption
    wastes
    fly ash
    by-product of coal mining
    groundwater contamination
    permeable reactive barriers
    semi-permeable reactive barriers
    mathematical modelling
    Opis:
    Odpady powstające w procesach wydobycia i oczyszczania węgla mogą stanowić zagrożenie środowiska wodno--gruntowego w przypadku braku odpowiednich zabezpieczeń. Najczęściej ma to miejsce podczas wykorzystywania ich do prac rekultywacyjnych, niwelacyjnych itp. Reaktywne bariery przepuszczalne lub półprzepuszczalne stanowią jedną z możliwości zapobiegania lub przynajmniej znacznego ograniczenia uwalniania się poza środowisko obszaru składowania niektórych zanieczyszczeń. W pracy przeanalizowano i przebadano możliwości usuwania z infiltrujących wód jonów następujących pierwiastków: As, B, Ba i Sr. Zróżnicowane pod względem właściwości chemicznych i interakcji w środowisku wodnym wymagają selektywnego doboru składu i struktury bariery. Na bazie przeprowadzonych badań laboratoryjnych, symulacji komputerowych w oparciu o oprogramowanie PHREEQC oraz własne zaprojektowano system barier reaktywnych selektywnych odpowiednio dla połączeń każdego z wymienionych pierwiastków. Zgromadzono niezbędną dla tego celu bazę danych.
    Wastes, as a byproduct of coal mining and conditioning, could cause serious groundwater contamination danger when introduced to environment without appropriate protection. It is especially true in using such wastes for reclamation and leveling purposes. Contaminants release from deposits can be stopped or at least highly limited by use of permeable and semi-permeable reactive barriers. The possibilities of removal of As, B, Ba and Sr ions from infiltrating water were investigated. Diversity of chemical properties and interactions in water environment requires selective selection of barrier's construction materials and structure. Upon experimental data and results of mathematical modeling with PHREEQC and self developed code, a system of reactive barriers was designed, addressing each of mentioned elements.
    Źródło:
    Górnictwo i Geoinżynieria; 2007, 31, 3/1; 351-370
    1732-6702
    Pojawia się w:
    Górnictwo i Geoinżynieria
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The use of chitin and chitosan for the removal of reactive black 5 dye
    Autorzy:
    Szymczyk, Paula
    Filipkowska, Urszula
    Jóźwiak, Tomasz
    Kuczajowska-Zadrożna, Małgorzata
    Powiązania:
    https://bibliotekanauki.pl/articles/1034825.pdf
    Data publikacji:
    2015
    Wydawca:
    Sieć Badawcza Łukasiewicz - Polskie Towarzystwo Chitynowe
    Tematy:
    Reactive Black 5 (RB5)
    adsorption
    chitin
    chitosan
    Opis:
    In this study, we investigated the effectiveness of Reactive Black 5 dye adsorption onto chitin and chitosan flakes. Adsorption capacity of chitin and chitosan, optimal pH of the adsorption process and reaction equilibrium time were determined. Results achieved were described with Freundlich, Langmuir and double Langmuir models. The pH value ensuring the highest dye adsorption effectiveness onto chitosan was pH 4. In turn, the highest dye adsorption effectiveness onto chitin was determined at pH 2, however considering that the pH value of industrial wastewater containing reactive dyes ranges from pH 3 to pH 4, further analyses with chitin were continued at pH 3. The time needed to reach the equilibrium concentration of dye was 360 min for chitin and 72 hours for chitosan. The study demonstrated that chitosan is the most effective sorbent of RB5. Its maximum adsorption capacity of the reactive dye accounted for 696.99 mg/g d.m., compared to 131.56 mg/g d.m. determined for chitin. Higher effectiveness of RB5 removal by chitosan is result of more number of amine groups in the chemical structure of this polymer, compared to chitin.
    Źródło:
    Progress on Chemistry and Application of Chitin and its Derivatives; 2015, 20; 260-272
    1896-5644
    Pojawia się w:
    Progress on Chemistry and Application of Chitin and its Derivatives
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Zastosowanie kompostu jako taniego sorbentu do usuwania barwników z roztworów wodnych
    Application of Compost as a Cheap Sorbent for Dyes Removal from Aqueous Solutions
    Autorzy:
    Jóźwiak, T.
    Filipkowska, U.
    Rodziewicz, J.
    Mielcarek, A.
    Owczarkowska, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/1819113.pdf
    Data publikacji:
    2013
    Wydawca:
    Politechnika Koszalińska. Wydawnictwo Uczelniane
    Tematy:
    tani sorbent
    usuwanie barwników
    roztwór wodny
    reactive dyes
    textile dyes
    waste water
    basic dyes
    acid dyes
    fly-ash
    adsorption
    sorption
    chitosan
    equilibrium
    Opis:
    This study was aimed at determining the feasibility of using compost as an unconventional sorbent for dyes removal from aqueous solutions. Compost applied in the study was a product of sewage sludge composting with plant residues (birch wood chips and rapeseed straw). Experiments were conducted for two anionic reactive dyes: Reactive Yellow 84 [RY84] (1701 g/mol – λmax = 357.5 nm) and Reactive Black 5 [RB5] (991 g/mol – λmax = 600.0 nm), and for two cationic dyes: Basic Green 4 [BG4] (365 g/mol – λmax = 618.0 nm) and Basic Violet 10 [BV10] (479 g/mol – λmax = 547.5 nm). The scope of the study included: determination of the optimal pH value of dyes adsorption onto compost, determination of equilibrium time of dyes sorption onto compost, determination of the maximum sorption capacity of the analyzed dyes on compost. During each experiment, sorbent concentration in the solution was at 5 g d.m./dm3. The concentration of dye remaining in the solution was determined with the spectrophotometric method on a UV-VIS SP 2000 spectrophotometer. Analyses were conducted at a room temperature – T = 22°C. The pH value of solutions was adjusted with aqueous solutions of HCl and NaOH. Sorption of the anionic reactive dyes RY84 and RB5 was the most effective at pH = 3. The optimal pH value of cationic dyes sorption was established at pH = 5. At a high pH value (pH = 9), the sorption of each type of dye was impaired due to partial solubilization of the compost sorbent. The equilibrium time of dyes sorption on compost accounted for 180 min in the case of RY84, RB5 and BG4, and for 240 min in the case of BV10 – 240 min. Analyses of the maximum sorption capacity of the selected dyes on compost were carried out already after establishing the optimal pH value of the sorption process for each dye. Results obtained were described with the use of two sorption models: a heterogenous Langmuir 2 model (double Langmuir equation), and a heterogenousFreundlich model. The Langmuir 2 model showed the best fit to experimental data (R2> 0.99). Due to the presence of functional groups -COOH and -OH, compost is negatively charged in aqueous solutions owing to which it prefers compounds with a positive charge (cationic dyes) during sorption. Electrostatic repulsion significantly impairs the adsorption of anionic dyes. The maximum sorption capacity of compost in the case of RY84 and RB5 reached 2.15 mg/g d.m. and 4.79 mg/g d.m., whereas in the case of BG4 and BV10 – 26.41 mg/g d.m. and 27.20 mg/g d.m., respectively. Results of the maximum sorption capacity of dyes on compost were referred to results obtained with other unconventional and cheap sorbents.
    Źródło:
    Rocznik Ochrona Środowiska; 2013, Tom 15, cz. 3; 2398-2411
    1506-218X
    Pojawia się w:
    Rocznik Ochrona Środowiska
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Zintegrowany proces produkcji wodoru przez konwersję metanu parą wodną z równoczesną sorpcją CO2
    Integrated hydrogen production process by means of methane-steam conversion and simultaneous CO2 sequestration
    Autorzy:
    Molga, E.
    Cherbański, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/2071124.pdf
    Data publikacji:
    2010
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    procesy zintegrowane
    reaktywna adsorpcja
    konwersja metanu z parą wodną
    sekwestracja CO2
    integrated processes
    reactive adsorption
    methane-steam conversion
    CO2 sequestration
    Opis:
    Przedstawiono koncepcję produkcji wodoru z jednoczesną sekwestracją C02. Do praktycznej realizacji zaproponowano zastosowanie zintegrowanego procesu adsorpcji reaktywnej. Jako adsorbent, zaproponowano wykorzystać popioły lotne, które stanowią użyteczny odpad z elektrowni i elektrociepłowni. Koncepcja ta umożliwi wyeliminowanie technologicznych problemów związanych z regeneracją adsorbentu, a jednocześnie poprzez trwałe związanie CO2 zapewni ograniczenie emisji tego gazu do atmosfery.
    Idea of hydrogen production with simultaneous CO2 sequestration is presented in the paper. The application of the integrated reactive adsorption process is proposed. The use of fly ashes from power plants as well as from combined power and heat plants are recommended for this purpose. This idea helps to eliminate technological problems with adsorbent regeneration and simultaneously to reduce the C02 emission to atmosphere.
    Źródło:
    Inżynieria i Aparatura Chemiczna; 2010, 3; 73-74
    0368-0827
    Pojawia się w:
    Inżynieria i Aparatura Chemiczna
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-11 z 11

      Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies