Badania skuteczności adsorpcji 2,4,6-trichlorofenolu z modelowych roztworów wodnych na wybranych trocinach

• Autorzy: Kuśmierek K. , Olkowicz K. , Świątkowski A.

Warianty tytułu

EN

Efficacy assessment of 2,4,6-trichlorophenol adsorption on sawdust from model water solutions

• Języki publikacji: PL

Abstrakty

PL

Celem pracy była ocena przydatności trocin do usuwania 2,4,6-trichlorofenolu (TCP) z wody. Do badań wybrano cztery biosorbenty pochodzące z drewna dębowego, olchowego, wiśniowego i sosnowego. Zbadano wpływ dawki trocin, pH roztworu oraz siły jonowej na skuteczność usuwania TCP z modelowego roztworu wodnego. Do opisu kinetyki adsorpcji zastosowano równania pseudo I i pseudo II rzędu, wykazując, że kinetyka przebiegała zgodnie z modelem pseudo II rzędu. Izotermy adsorpcji TCP na trocinach w warunkach równowagowych opisano równaniami Freundlicha, Langmuira, Langmuira-Freundlicha oraz Sipsa. Wykazano, że TCP był najskuteczniej usuwany na trocinach dębowych, podczas gdy najgorszym adsorbentem okazały się trociny sosnowe. Uzyskane wyniki pokazały, że trociny mogą być skutecznym i tanim adsorbentem do usuwania chlorofenolu z wody. Można je wykorzystać np. do tworzenia barier ochronnych oraz ekranów ograniczających przenikanie i migrację zanieczyszczeń organicznych do wód powierzchniowych i podziemnych.

EN

The aim of this study was to evaluate the usefulness of sawdust for 2,4,6-trichlorophenol (TCP) removal from water. Four different wood-derived biosorbents, namely oak, alder, cherry and pine sawdust, were selected for experiments. Effect of the sorbent dose, solution pH and ionic strength on efficacy of TCP removal from a model solution was investigated. The adsorption kinetic data were analyzed using the pseudo-first and pseudo-second order models, demonstrating the latter to represent the adsorption kinetics. The isotherms of TCP adsorption on the sawdust were fitted against the Langmuir, Freundlich, Langmuir-Freundlich and Sips equations. It was demonstrated that the oak sawdust removed TCP most efficiently, while the pine sawdust was the worst sorbent. The results revealed that sawdust might be an efficient low cost adsorbent for chlorophenol removal from water. It may be employed e.g. in protective barriers and shields limiting organic contaminant penetration and diffusion into surface and groundwater.

Słowa kluczowe

PL

sorbenty; związki organiczne; izotermy adsorpcji; kinetyka adsorpcji

EN

low-cost sorbents; organic compounds; adsorption isotherms; adsorption

• Wydawca: Polskie Zrzeszenie Inżynierów i Techników Sanitarnych, Oddział Dolnośląski
• Czasopismo: Ochrona Środowiska
• Rocznik: 2015
• Tom: Vol. 37, nr 4
• Strony: 19--24
• Opis fizyczny: Bibliogr. 33 poz., tab., wykr.

Twórcy

autor

Kuśmierek K.

• Wojskowa Akademia Techniczna, Wydział Nowych Technologii i Chemii, ul. S. Kaliskiego 2, 00-908 Warszawa

autor

Olkowicz K.

• Wojskowa Akademia Techniczna, Wydział Nowych Technologii i Chemii, ul. S. Kaliskiego 2, 00-908 Warszawa

autor

Świątkowski A.

• Wojskowa Akademia Techniczna, Wydział Nowych Technologii i Chemii, ul. S. Kaliskiego 2, 00-908 Warszawa

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