Temat: adsorption of lead ions - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Comparative studies on the adsorption of Pb(II) ions by fly ash and slag obtained from CFBC technology
Autorzy:: Kalak, Tomasz
Cierpiszewski, Ryszard
Powiązania:: https://bibliotekanauki.pl/articles/780077.pdf
Data publikacji:: 2019
Wydawca:: Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:: fly ash
slag
adsorption of lead ions
isotherms
kinetics
Opis:: Fly ash and slag were examined for the removal processes of Pb(II) ions from water in batch experiments under different conditions of adsorbent dosage, initial concentration, pH and contact time. The materials are industrial waste generated from the high temperature treatment of sewage sludge by the circulating fluidized bed combustion (CFBC) technology. Physical and chemical properties, as well as adsorption efficiency and calculated maximum adsorption capacity of Pb(II) ions were determined using a variety of methods. The kinetic analysis revealed that the adsorption process is better described by the pseudo-second order equation and it is well fitted to the Freundlich model.
Źródło:: Polish Journal of Chemical Technology; 2019, 21, 4; 72-81
1509-8117
1899-4741
Pojawia się w:: Polish Journal of Chemical Technology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Removal of lead(II) ions by an adsorption process with the use of an advanced SiO2/lignin biosorbent
Autorzy:: Klapiszewski, Ł.
Bartczak, P.
Szatkowski, T.
Jesionowski, T.
Powiązania:: https://bibliotekanauki.pl/articles/949403.pdf
Data publikacji:: 2017
Wydawca:: Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:: adsorption
SiO2/lignin biosorbent
lead(II) ions
treatment of aqueous systems
adsorption kinetics
Opis:: We demonstrate here that lignin can be successfully combined with silica to create a multifunctional material with considerable sorption capabilities. Experiments were carried out in which a silica/lignin hybrid was used for the removal of lead(II) ions from water solutions. Adsorption kinetics were also determined and preliminary regeneration tests were performed. The effectiveness of the adsorption process depends on the following parameters: contact time of adsorbent and adsorbate (equilibrium times: 5 min for concentration 25 mg/L, 10 min for 50 and 75 mg/L, 60 min for 100 mg/L), pH (optimal pH = 5) and adsorbent mass. The kinetics of the adsorption of lead(II) ions on the SiO₂/lignin biosorbent are best described by a pseudo-second-order model. Adsorption isotherms of lead(II) ions were also determined. The experimental data were found to be in agreement with the Langmuir model, and the maximal sorption capacity of the adsorbent with respect to lead(II) was 89.02 mg/g.
Źródło:: Polish Journal of Chemical Technology; 2017, 19, 1; 48-53
1509-8117
1899-4741
Pojawia się w:: Polish Journal of Chemical Technology
Dostawca treści:: Biblioteka Nauki

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