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1

Biosorption of Cu2+ and Ni2+ ions from aqueous solutions using waste dried activated sludge biomass

Aslan S., Yildiz S., Ozturk M.

Polish Journal of Chemical Technology

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2018

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Vol. 20, nr 3

20--28

EN

Adsorption of Cu(II) and Ni(II) ions onto the waste powdered activated sludge biomass (PWB), which was obtained from the biological wastewater treatment plant, was investigated in this experimental study. The effects of contact time, pH, temperature, initial sorbate and sorbent concentrations on the adsorption were determined. The BET surface area, pore volume, and pore diameter of PWB were found to be about 0.51 m2/g, 0.0053 cm3/g, and 41.4 nm, respectively. Considering the R2 value, qexp and qcal , the Langmuir and Freundlich models were well described for Cu(II) and Ni(II) adsorption, respectively. The adsorption mechanism of Cu(II) and Ni(II) onto the PWB could be better simulated by the pseudo-second-order kinetic mechanism than the pseudo-first-order, intra particle diffusion and Elovich models. Thermodynamic aspects of the adsorption of heavy metals were also investigated. Considering the applied desorbing agents for reuse of PWB for Ni(II) recovery, desorption cycle is not feasible due to the deterioration of the PWB structure.

2

Trace elements studies on Halilurrahmn lake, Sanliurfa, Turkey

Cetin A., Unlu Y., Ozturk M., Tulu M.

Chemia i Inżynieria Ekologiczna

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2000

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Vol. 7, nr 11

1143-1151

EN

The present investigation was undertaken in order to enlighten the pollution load of Halilurrahman lake in Turkey by investigating its physico-chemical parameters.The water analysis showed class I and II characteristics according to the international standards, but slightly higher levels of nitrate and chloride depict a contamination in its water. The levels of trace elements: Cr, Co, Bi, As, Se, Hg, Ba, Fe, Zn, Pb, Cd, Cu, Al and F as well as radionuclids like mU, 208n, 134CS, 214Bi and 4°K were determined in the sediments and different organs of fish specimen. Co and Cr levels were higher as compared to other trace elements. 137 Cs and 40K were detected both in the sediments vis-a-vis fish steak.

PL

Przedstawiono badania ładunku zanieczyszczeń w jeziorze Halilurrahman poprzez analizę parametrów fizykochemicznych jego wody. Badana wodę zaliczono do I i II klasy czystości, jednak zawartość azotanów i chlorków przewyższała poziom określony dla tych klas. W osadach dennych oraz w różnych częściach ryb oznaczono stężenie pierwiastków śladowych: Cr, Co, Bi, As, Se, Hg, Ba, Fe, Zn, Pb, Cd, Cu, Al i F oraz radionuklidów,jak: 235U, 208Tl, 134CS, 214Bi i 40K. W porównaniu z innymi mikroelementami największe stężenie wykazywał Co i Cr. Zbadano również zawartość I37Cs i 40K w osadach dennych.

3

Roadside Plants as Possible Indicators of Heavy Metal Pollution in Turkey

Aksoy A., Celik A., Ozturk M., Tulu M.

Chemia i Inżynieria Ekologiczna

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2000

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Vol. 7, nr 10

991-996

EN

Cynodon dactylon, Nerium oleander and Pinus brutia a herb, a shrub and a tree; are very commonly met alongside the roads in the Mediterranean region of Turkey. Since roadside plants in this region are under a great pressure of traffic, an attempt was made to determine lead and cadmium accumulation in the species cited above. During summer, a peak traffic season in the Mediterranean above ground parts of C. dactylon, leaves of N. oleander and bark of P. brutia were collected between 0-5 m distance from 15 localities alongside the roads. These were subjected to an analysis in unwashed form. Results obtained revealed that Pb and Cd varied between 4.65-106.30 and 0.165-1.615 mg/g dry weight, respectively. The highest accumulation was in C. dactylon followed by leaves of N. oleander. Bark of P. brutia showed the lowest values.

PL

Cynodon dactylon, Nerium oleander i Pinus brutia to, odpowiednio, trawa, krzew i drzewo; są one stosunkowo dobrze poznanymi roślinami przydrożnymi regionu wybrzeża M. Śródziemnego w Turcji. Ponieważ w tym regionie rośliny przydrożne znajdują się pod wpływem ruchu drogowego, dlatego oznaczano w nich ołów i kadm. Latem, w okresie wzmożonego ruchu na drogach, pobierano nadziemne części C. dactylon, liście N. oleander i korę P. brutia w odległości 0-5 m w 15 wybranych miejscach w pobliżu drogi. Rośliny poddano analizie w formie niemytej. Uzyskane dane zawartości Pb i Cd mieściły się w zakresie 4,65-106,30 i 0,165-1,615 mg/g suchej masy. Największą kumulację wykazywał C. dactylon, następnie liście N. oleander. Kora P. brutia oznaczała się najmniejszymi wartościami analizowanych metali.