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 "adsorbent" wg kryterium: Temat

  Lista filtrów
Wyrównaj
Wyświetlanie 1-15 z 50
Tytuł:
Bio-polishing sludge adsorbents for dye removal
Autorzy:
Zaini, M. A. A.
Norulaina, A.
Mohd Azizi, C. Y.
Powiązania:
https://bibliotekanauki.pl/articles/779794.pdf
Data publikacji:
2016
Wydawca:
Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:
adsorption
adsorbent
bio-polishing sludge
methylene blue
chemical treatment
Opis:
The objective of this work is to evaluate the removal of methylene blue dye by bio-polishing sludge-based adsorbents. The adsorbents were characterized according to the specific surface area, pH upon the treatment and surface functional groups. The adsorption of dye was carried out at room temperature, and the adsorption data were analyzed using the isotherm and kinetics models. The bio-polishing sludge is rich in ash content, and the presence of surface functional groups varied with the treatment strategies. The specific surface area of adsorbents is between 7.25 and 20.8 m2 /g. Results show that the maximum removal of methylene blue by sludge adsorbents was observed to have the following order: untreated sludge (SR) > zinc chloride-treated (SZ) > microwave-dried (SW) = potassium carbonate-treated (SK) > acid-washed (SH). The maximum adsorption capacities for SR and SZ as predicted by the Langmuir model are 170 and 135 mg/g, respectively. Although SR demonstrates a higher maximum removal than SZ, the latter exhibits greater removal intensity and rate constant even at high dye concentration. The bio-polishing sludge is a promising adsorbent for dye wastewater treatment.
Źródło:
Polish Journal of Chemical Technology; 2016, 18, 4; 15-21
1509-8117
1899-4741
Pojawia się w:
Polish Journal of Chemical Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Characterization of Spent Bleaching Earth as an Adsorbent Material for Dye Removal
Autorzy:
Yulikasari, Andriyan
Nurhayati, Ervin
Utama, Widya
Warmadewanthi, Idaa
Powiązania:
https://bibliotekanauki.pl/articles/2086386.pdf
Data publikacji:
2022
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
adsorbent
adsorption capacity
surface area
SBE
spent bleaching earth
Opis:
Initial research has been carried out to determine the potential of SBE as an adsorbent material through chemical and surface area characterization. Several analyses were performed, including oil content, BET, SEM-EDS, XRD, FTIR, and adsorption capacity. The oil content of the SBE samples were 0.05–0.09%, well below the standard (3%) of hazardous material classification according to the Indonesian government regulation. The chemical composition of SBE, measured by EDS, was dominated by Si and Al elements. XRD analysis revealed two 2-theta diffraction peaks indicated the presence of crystalline SiO2 and Al2O3 phases. Additionally, the results of the FTIR test also showed the dominance of Si-O and Al-O-H functional groups. The SBE morphology, as observed in SEM image, exhibited irregular shape and porous surface covered by impurities. These results supported by the BET data which showed SBE surface area of 10.86 m2g-1 and a mesopore volume of 2.49 cm3 (STP)g-1. Batch adsorption study conducted using low and high range concentration of methylene blue produced a maximum adsorption capacity of 7.993 mg/g and 40.485 mg/g, respectively. The adsorption isotherm analysis showed that the adsorption mechanism was in accordance with the Langmuir isotherm model. Considering its chemical characteristic, SBE has met the criteria for adsorbent material. Nevertheless, the small surface area requires SBE to be activated prior to use.
Źródło:
Journal of Ecological Engineering; 2022, 23, 4; 96--104
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Metody badań niejednorodności energetycznej powierzchni katalizatorów i adsorbentów
Methods of investigation energetical heterogeneity on the surface of catalysts and adsorbents
Autorzy:
Woszczyński, P.
Powiązania:
https://bibliotekanauki.pl/articles/172199.pdf
Data publikacji:
2013
Wydawca:
Polskie Towarzystwo Chemiczne
Tematy:
heterogeniczność
niejednorodność energetyczna
równanie Fredholma
adsorpcja
kalorymetria
chromatografia
odwrócona chromatografia gazowa
chromatografia z odwróconym przepływem
programowana termiczna desorpcja
heterogeneity
adsorbent
catalyst
Fredholm equation
adsorption
calorimetry
chromatography
inverse gas chromatography (IGC)
IGC
reverse-flow IGC (RF-IGC )
programmed thermal desorption (TPD)
TPD
Opis:
The knowledge of the properties and a surface structure of catalysts and adsorbents is of great importance in the selection of these materials to the relevant objectives. Interesting structural information can be obtained in many ways, for example: with the use of spectroscopic or microscopic techniques or in direct examination of the adsorption isotherms. This article focuses on these last-mentioned methods, which can be a source of information on energy heterogeneity of the catalyst or adsorbent surface. Heterogeneity is usually determined by measuring adsorption isotherms of a selected adsorbate on the examined adsorbent, which is dependent of adsorbate coverage on the adsorbent relative to the equilibrium pressure under isothermal conditions. Among the many mathematical models describing this relationship particularly interesting is the adsorption isotherm model described by generalized integral Fredholm equation. The solution of this equation is density function with the assumed local isotherm model. There are different ways to solve the Fredholm equation, depending on measurement methods of obtained adsorption isotherms. For example, an application of static techniques (gravimetric or volumetric) needs to use advanced, sophisticated numerical methods for directly solving integral equations, other techniques (e.g. such as calorimetric or chromatographic) provide specific values that simplify these calculations. The resulting energy density function allows to observe active centers as peaks or inflections of the curve on the energy spectrum graph.
Źródło:
Wiadomości Chemiczne; 2013, 67, 7-8; 635-664
0043-5104
2300-0295
Pojawia się w:
Wiadomości Chemiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modelowanie matematyczne mikrofalowej regeneracji wybranych adsorbentów węglowych i zeolitowych
Mathematical modeling of microwave regeneration of selected carbonaceous and zeolite adsorbents
Autorzy:
Witkiewicz, K.
Powiązania:
https://bibliotekanauki.pl/articles/2072981.pdf
Data publikacji:
2014
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
mikrofalowa regeneracja adsorbentów
adsorpcja zmiennotemperaturowa
wielotemperaturowa izoterma Totha
adsorbent microwave regeneration
temperature swing adsorption
multitemperature Toth isotherm
Opis:
Przedstawiono wyniki modelowania mikrofalowej regeneracji adsorbentów. Analizowano desorpcję toluenu lub propan-2-olu z adsorbentu węglowego Sorbonorit 3 oraz zeolitu HiSiv 1000. Sformułowano model matematyczny nierównowagowego, nieizotermicznego oraz nieadiabatycznego procesu desorpcji mikrofalowej. Stwierdzono, że proces najintensywniej przebiega w układach związek polarny–adsorbent węglowy. Adsorbent zeolitowy nie jest efektywnie regenerowany tą metodą, gdy desorbowany jest związek niepolarny.
Modeling results of adsorbent microwave regeneration are presented. Desorption of toluene or propan-2-ol from carbonaceous adsorbent, Sorbonorit 3 and zeolite HiSiv 1000 was analyzed. The mathematical model of nonequilibrium, non-isothermal and non-adiabatic process of microwave desorption was formulated. It was stated that the process proceeded most intensively in polar compound-carbonaceous adsorbent system. Zeolite adsorbent is not effectively regenerated using this method when nonpolar compound is to be desorbed.
Źródło:
Inżynieria i Aparatura Chemiczna; 2014, 4; 320--321
0368-0827
Pojawia się w:
Inżynieria i Aparatura Chemiczna
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Advanced Treatment of Pre-treated Commercial Laundry Wastewater by Adsorption Process: Experimental Design and Cost Evaluation
Autorzy:
Veli, Sevil
Arslan, Ayla
Gülümser, Çisil
Topkaya, Eylem
Kurtkulak, Hatice
Zeybek, Şehriban
Dimoglo, Anatoli
İşgören, Melike
Powiązania:
https://bibliotekanauki.pl/articles/124786.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
adsorbent synthesis
COD removal
experimental design
laundry wastewater
polymer supported composites
Opis:
In Turkey, the commercial laundry wastewater is usually discharged to the receiving water bodies and its reuse potential is ignored. This wastewater is grouped into the greywater due to their content of organic and inorganic pollutants. In recent years, the sequential processes have become more preferable in greywater treatment and reuse. In this study, a batch adsorption process was applied for further treatment of commercial laundry wastewater which is also pre-treated by means of the electrocoagulation process. In adsorption, two different composites of waste hazelnut shell derived activated carbons, which are supported with polyaniline (PAn/HS) and polypyrrole (PPy/HS), were used as adsorbents. The efficiency of the process was evaluated by means of an experimental design, and the response surface methodology was applied for this purpose. In the experiment with PAn/HS, the chemical oxygen demand (COD) 75% removal efficiency was accomplished with adsorbent dosage of 0.9 g, at pH 8, with 125 rpm mixing rate and for 77.5 min reaction time. For PPy/HS under the same experimental conditions, the COD removal efficiency was obtained as 20%. The utilization of waste hazelnut shell derived composites as adsorbents for commercial laundry wastewater treatment is a good alternative. The production costs of adsorbents were estimated as 0.70 USD/g and 3.21 USD/g for PAn/HS and PPy/HS, respectively. In terms of the production cost, the PAn/HS composite is approved more agreeable as adsorbents for commercial laundry wastewater treatment.
Źródło:
Journal of Ecological Engineering; 2019, 20, 10; 165-171
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Adsorption of ciprofloxacin HCl from aqueous solution using activated kaolin
Autorzy:
Tunde, Aborode Abdullahi
Powiązania:
https://bibliotekanauki.pl/articles/1030782.pdf
Data publikacji:
2020
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Activated Kaolin
Adsorbent Dose
Adsorption
Ciprofloxacin
Contact time
FTIR
SEM
UV-Spectrophotometer
Opis:
This study involves the determination of the adsorption capacity of activated kaolin for the removal of ciprofloxacin hydrochloride from aqueous medium. The kaolin was activated through chemical (HCl and HNO3) activation method, the adsorbent was characterize using Scanning electron microscopy (SEM) and Fourier transformed infrared spectroscopy (FTIR), the adsorption experiment was monitored using Ultra-violet visible spectrophotometer at maximum wavelength of 438 nm. The effect of concentration, pH, contact time and adsorbent dose were examined.
Źródło:
World Scientific News; 2020, 145; 62-73
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Isotherm studies of malachite green removal by yarn processing sludge-based activated carbon
Badanie izoterm usuwania zieleni malachitowej przez osad ściekowy modyfikowany węglem aktywnym
Autorzy:
Tang, Shu Hui
Zaini, Muhammad Abbas Ahmad
Powiązania:
https://bibliotekanauki.pl/articles/106340.pdf
Data publikacji:
2019
Wydawca:
Towarzystwo Chemii i Inżynierii Ekologicznej
Tematy:
adsorbent
adsorption
chemical activation
dye removal
sludge
adsorpcja
aktywacja chemiczna
usuwanie barwników
szlam
Opis:
Adsorption is an effective wastewater treatment technique which has been widely used in various industrial applications. However, the high operation cost involving commercial activated carbon in industrial processes is the main drawback. Sewage sludge is an auspicious precursor of activated carbon owing to its high carbon content, rich functional groups, low cost, high availability and abundance. This research was aimed to establish the feasibility of converting yarn processing sludge into activated carbon by KI + KOH activation and char at 700 °C for 1 h. The effect of preparation strategies on the properties of sludge-based adsorbents (SBA) was reviewed. The applications of SBAs in the removal of dyes and model pollutants were discussed. The results from this study proved that the preparation of yarn processing sludge-based activated carbon via KI + KOH activation is feasible and effective in the adsorption of dye. This paper provides further insight on the preparation methods of sludge-based adsorbents and dye wastewater treatment using these adsorbents.
Źródło:
Chemistry-Didactics-Ecology-Metrology; 2019, 24, 1-2; 127-134
2084-4506
Pojawia się w:
Chemistry-Didactics-Ecology-Metrology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Równowaga adsorpcji tlenu na adsorbentach zeolitowych stosowanych w procesach wydzielania ditlenku węgla ze strumieni spalin
Adsorption isotherms of oxygen over zeolite adsorbents used in the separation of CO2 from flue gases
Autorzy:
Tańczyk, M.
Warmuziński, K.
Jaschik, M.
Powiązania:
https://bibliotekanauki.pl/articles/306187.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Instytut Inżynierii Chemicznej PAN
Tematy:
adsorpcja tlenu
adsorbent zeolitowy
wydzielanie CO2
spaliny
Opis:
Przedstawiono wyniki badań równowagi adsorpcji tlenu na zeolitowych sitach molekularnych 13X, które mogą być stosowane w adsorpcyjnych procesach wydzielania CO2 ze strumieni spalin. Stwierdzono, że tlen jest najsłabiej adsorbującym się gazem, spośród głównych składników spalin suchych. Stwierdzono także, że w zakresie ciśnień 0-1 bar współczynniki selektywności są bardzo wysokie, a z obu badanych adsorbentów wyraźnie lepsze właściwości separacyjne dla mieszanin azotu, tlenu i ditlenku węgla ma sito Grace.
Experimental results are presented on the adsorption equilibria of oxygen over zeolite molecular sieves 13X which may be used in the separation of CO2 from flue gas streams. It is found that oxygen is the weakest adsorbing species among the main components of a dry flue gas. It is also concluded that, over a range of pressures between 0 and 1 bar, the selectivities are very high. Of the two adsorbents studied ZMS 13X Grace has clearly better separation properties for mixtures of N2, O2 and CO2 than its Molsiv counterpart.
Źródło:
Prace Naukowe Instytutu Inżynierii Chemicznej Polskiej Akademii Nauk; 2011, 15; 5-13
1509-0760
Pojawia się w:
Prace Naukowe Instytutu Inżynierii Chemicznej Polskiej Akademii Nauk
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ocena skuteczności adsorpcyjnego usuwania związków arsenu z roztworów wodnych na granulowanym wodorotlenku żelaza
Adsorptive removal of arsenic species from aqueous solutions using granular ferric hydroxide
Autorzy:
Szlachta, M.
Wójtowicz, P.
Powiązania:
https://bibliotekanauki.pl/articles/236892.pdf
Data publikacji:
2016
Wydawca:
Polskie Zrzeszenie Inżynierów i Techników Sanitarnych
Tematy:
oczyszczanie wody
oczyszczanie ścieków
adsorpcja
arsen(III)
arsen(V)
adsorbent żelazowy
water treatment
wastewater treatment
adsorption
arsenite
arsenate
iron based adsorbent
Opis:
Badano skuteczność adsorpcyjnego usuwania związków arsenu(III) i (V) z modelowych roztworów wodnych na granulowanym wodorotlenku żelaza (CFH-12). Badania zrealizowano w układzie porcjowym i przepływowym w skali laboratoryjnej. Maksymalna pojemność adsorpcyjna materiału CFH-12 względem As(III) i As(V), obliczona na postawie równania izotermy Langmuira, wynosiła odpowiednio 43,75 mg/g i 44,04 mg/g. Do opisu kinetyki adsorpcji anionowych form arsenu w badanym układzie wykorzystano równanie kinetyczne pseudo I i pseudo II rzędu. Zaobserwowano podobny przebieg kinetyki usuwania As(III) i As(V), polegający na szybkiej adsorpcji jonów w fazie początkowej, a następnie stopniowym spowolnieniu procesu. Badania zrealizowane w układzie przepływowym potwierdziły dużą wydajność i stabilność adsorbentu CFH-12 podczas usuwania związków arsenu. Ich stężenie w odpływie z kolumn adsorpcyjnych utrzymywało się poniżej wartości dopuszczalnej 10 µg/dm3 przez czas pracy kolumn odpowiadający wymianie 15 tys. objętości złoża. Z tego względu zastosowanie granulowanego wodorotlenku żelaza do adsorpcyjnego oczyszczania wód i ścieków z przemysłu wydobywczego zanieczyszczonych związkami arsenu można traktować jako skuteczne i niezawodne rozwiązanie.
Efficacy of arsenic(III) and (V) adsorptive removal from aqueous model solutions on the granular ferric hydroxide (CFH-12) was analyzed. Batch adsorption and fixed bed column experiments were performed on the laboratory scale. Maximum adsorption capacity of CFH-12 for As(III) and As(V) calculated by the Langmuir equation amounted to 43.75 mg/g and 44.04 mg/g, respectively. Pseudo-first and pseudo-second order equation was employed to description of adsorption kinetics of anionic arsenic species. A similar adsorption kinetics behavior of As(III) and As(V) was observed, relying on a quick ion adsorption in the initial phase, followed by a gradual process slowdown. The adsorption test results under dynamic conditions demonstrated high adsorbent efficacy and stability over a long period of time. The arsenic concentration in the effluent remained below the accepted threshold of 10 μg/dm3 during the column operation time corresponding to 15 thousand bed volumes. Hence, application of granular hydroxide to adsorptive treatment of arsenic contaminated water and wastewater from mine industry should be regarded as a robust and effective solution.
Źródło:
Ochrona Środowiska; 2016, 38, 4; 47-52
1230-6169
Pojawia się w:
Ochrona Środowiska
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Materiały kompozytowe MOF-grafen
MOF-graphene composites
Autorzy:
Szczęśniak, B.
Choma, J.
Jaroniec, M.
Powiązania:
https://bibliotekanauki.pl/articles/171770.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Chemiczne
Tematy:
kompozyty MOF-grafen
adsorpcja gazów
magazynowanie gazów
adsorbenty
CO2
VOCs
H2
CH4
MOF-graphene composites
gas adsorption
gas storage
adsorbent
Opis:
The effective capture of harmful gases and clean energy sources are of great importance for protection of the environment. In this regard, it is possible to take advantage of the MOF-graphene composites to develop new technologies for environmental and energy-related applications. These composites attract a great attention around the world due to their higher adsorption affinity toward CO2, volatile organic compounds (VOCs), H2 and CH4 reported in comparison to the parent MOFs. Integration of MOFs with graphene nanosheets can be a very effective strategy not only to improve their adsorption performance but also to generate new chemical and physical properties that are not present in MOFs alone. In this review we present the progress in the field of gas capture/storage using MOF-graphene composites with special attention on the correlation between composition, structure and adsorption properties.
Źródło:
Wiadomości Chemiczne; 2017, 71, 9-10; 671-691
0043-5104
2300-0295
Pojawia się w:
Wiadomości Chemiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The influence of chlorine substitution on the adsorption of chlorophenols on HDTMA-modified halloysite in aqueous solutions
Autorzy:
Szczepanik, Beata
Kołbus, Anna
Słomkiewicz, Piotr
Czaplicka, Marianna
Powiązania:
https://bibliotekanauki.pl/articles/27311560.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
adsorption
mechanism
chlorophenols
HDTMA-halloysite adsorbent
computational calculations
adsorpcja
mechanizm
chlorofenol
kalkulacja
haloizyt
Opis:
This article focuses on discussing the adsorption process of phenol and its chloro-derivatives on the HDTMA-modified halloysite. Optimized chemical structures of phenol, 2-, 3-, 4-chlorophenol, 2,4-dichloro-, and 2,4,6-trichlorophenol were obtained with computational calculation (the Scigress program). Charge distributions and the hypothetical structure of the system HDTMA-modified halloysite are among their key features. The above-mentioned calculations are applied in order to explain adsorption mechanism details of chlorophenols on the HDTMA-modified halloysite in aqueous solutions. The results of electron density distribution and solvent accessible surface area calculations for phenol and chlorophenols molecules illustrate the impact of chlorine substitution position in a phenol molecule, both on the mechanism and the kinetics of their adsorption in aqueous solutions. Experimental adsorption data were sufficiently represented using the Langmuir multi-center adsorption model for all adsorbates. In addition, the relations between adsorption isotherm parameters and the adsorbate properties were discussed. This study also targets at explaining the role of meta position as a chlorine substituent for mono-chloro derivatives. Given the above findings, two possible mechanisms were utilized as regards chlorophenol adsorption on the HDTMA-modified halloysite, i.e., electrostatic and partition interactions when the chlorophenols exist in a molecular form.
Źródło:
Archives of Environmental Protection; 2023, 49, 2; 66--75
2083-4772
2083-4810
Pojawia się w:
Archives of Environmental Protection
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Preparation of carbonaceous heavy metal adsorbent from palm shell using sulfur impregnation
Autorzy:
Sugawara, K.
Wajima, T.
Kato, T.
Sugawara, T.
Powiązania:
https://bibliotekanauki.pl/articles/346975.pdf
Data publikacji:
2007
Wydawca:
Politechnika Bydgoska im. Jana i Jędrzeja Śniadeckich. Wydział Technologii i Inżynierii Chemicznej
Tematy:
palm shell
heavy metal adsorption
carbonaceous adsorbent
pyrolysis
sulfur impregnation
Opis:
We attempt to prepare a heavy metal adsorbent from palm shell with a simple-two step process using pyrolysis and sulfur impregnation. Palm shell was pyrolyzed with three different methods; rapid pyrolysis, slow pyrolysis, and KOH pyrolysis, and the prepared char with high specific surface area was sulfurized with H2S impregnation to obtain the sulfur-impregnated char with the adsorption ability of heavy metals. The pyrolysis char with high specific surface area can be obtained by KOH pyrolysis, which was pre-treated with KOH solution before slow pyrolysis, and can added sulfur into KOH pyrolysis char using H2S gas. The sulfur content of sulfur-impregnated char increased with increasing the time of H2S treatment, and increased the adsorption amount of Pb2+ from aqueous solution. The sulfur impregnated char was more effective for Pb2+ and Zn2+ adsorption than commercial charcoal.
Źródło:
Ars Separatoria Acta; 2007, 5; 88-98
1731-6340
Pojawia się w:
Ars Separatoria Acta
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Adsorpcja prometryny na adsorbencie haloizytowym
Prometryn adsorption by halloysite sorbent
Autorzy:
Raczyńska-Żak, M.
Grabka, D.
Słomkiewicz, P. M.
Powiązania:
https://bibliotekanauki.pl/articles/270503.pdf
Data publikacji:
2011
Wydawca:
Centralny Ośrodek Badawczo-Rozwojowy Aparatury Badawczej i Dydaktycznej, COBRABiD
Tematy:
adsorpcja prometryny
sorbenty
adsorbent haloizytowy
prometryn adsorption
sorbents
halloysite adsorbent
Opis:
W artykule opisano przebieg adsorpcji prometryny na haloizycie. Badania przeprowadzono w układzie stacjonarnym i przepływowym. Określono najlepszy sposób modyfikacji kwasowo-zasadowej tego sorbentu. Wyznaczono wielkość masy sorbentu optymalnej dla adsorpcji prometryny o określonym stężeniu oraz czas kontaktu haloizytu z prometryną. Parametry adsorpcji wyznaczono za pomocą izotermy Freundlicha.
The effect of the Prometryn sorption on the halloysite is described. The studies were carried both in the stationary and flow systems. The optimal way of acid-base modification of this sorbent, its optimal dose and time of contact between halloysite and Prometryn were presented. The isothermal model was proposed. The adsorption data by Freundlichisoterm were determined.
Źródło:
Aparatura Badawcza i Dydaktyczna; 2011, 16, 4; 29-36
2392-1765
Pojawia się w:
Aparatura Badawcza i Dydaktyczna
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Pulp and Paper Wastewater Treatment with Bottom Ash Using Jar Test
Autorzy:
Pisceselia, Dian F.
Arita, Susila
Agustina, Tuty Emilia
Powiązania:
https://bibliotekanauki.pl/articles/2202330.pdf
Data publikacji:
2023
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
adsorbent
pulp and paper wastewater
bottom ash
jar test
Opis:
The wastewater generated from pulp and paper production still contains pollutants and contaminants, so appropriate and economical materials are needed to reduce pollutants by using adsorbents from bottom ash. This study examined the characteristics of bottom ash and pulp and paper wastewater, the effect of stirring time, stirring speed, and adsorbent activation temperature on decreasing the environmental parameters of wastewater. The synthesis of bottom ash as an adsorbent was carried out by heating at 100 and 200 °C for 1 hour. The wastewater treatment process with maximum yield occurs at a stirring speed of 100 rpm for 50 min. The use of bottom ash without heating as an adsorbent in the pulp and paper wastewater treatment process has reduced TSS 77.5%, COD 85.72%, chloride 26.9%, TDS 1143 ppm, and EC 2180 s/cm, which have met the environmental quality standards.
Źródło:
Journal of Ecological Engineering; 2023, 24, 1; 188--194
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Metal Detoxification in Nature and Its Translation into Functional Adsorbent Materials
Autorzy:
Permana, Rega
Ihsan, Yudi Nurul
Powiązania:
https://bibliotekanauki.pl/articles/1030803.pdf
Data publikacji:
2020
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
adsorbent
bioinspired
heavy metal
polyphenol
Opis:
Nature has a remarkable strategies to overcome the unfavoring environmental condition by producing a unique chemical compounds, including polyphenol. Polyphenol residues in many living organism have been documented to express numerous biological function ranging from antioxidant, mechanical reinforcement as well as metal anchoring substances. This gave us insight of how nature converts toxic metal compound and deposits it into a harmless form. This review will discuss some natural strategies of living organism to metabolize metal in a safe manner so that the metal no longer harmful to them. Example taken from aluminum accumulating plants, vanadium accumulating marine tunicate and iron-reinforced mussel byssus, which all three utilized phenol derivative compound to chelate the metal. Advances made by incorporating cutting edge characterization tools allowed us to understand the exact mechanism of metal chelation at the atomic level. A comprehensive discussion of molecular mechanism governing the complexion between the phenolic compound and metal will be beneficial for further study to fabricate functional materials, for example adsorbent, to remediate contaminated water. Translating these natural strategies into an engineered polyphenol based adsorbent materials will be prospective to be further applied as a remediation agent as it is easily found in nature, cost effective and highly efficient.
Źródło:
World Scientific News; 2020, 145; 144-155
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 50

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