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1

A comparative study of metals solubilization and electrocoagulation methods’ effectiveness in orthophosphate removal from synthetic wastewater

100%
Wysocka I.
Polish Journal of Environmental Studies
|
2013
|
tom 22
|
nr 3
A comparative study was carried out to evaluate the effectiveness of orthophosphate removal from wastewaters using two methods: electrocoagulation and metals solubilization. Both methods were found to enable orthophosphate removal with more than 90% effectiveness at relatively low concentration of orthophosphates in crude wastewaters. The method of metals solubilization is based on spontaneous corrosive processes occurring in wastewater. In contrast to electrocoagulation, its advantage is a lack of the necessity of applying voltage to solubilized electrodes (no consumption of electric current at this stage), while its drawback is the longer duration of the treatment process. This manuscript presents a comparative analysis of both these methods applied for the treatment of synthetic wastewaters with pH=3, pH=5, and pH=8. Depending on the type of wastewaters subject to the treatment process, the metals solubilization method may appear more justified economically, especially with both methods resuling in similar parameters of wastewaters after treatment.
2

Effects of total phosphorus and orthophosphates removal with the method of metals solubilisation on steel, aluminium, and mixed media

63%
Wysocka I., Krzemieniewski M.
Polish Journal of Natural Sciences
|
2007
|
tom 22
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nr 4
670-678
Studies were carried out of a new, unconventional method for phosphorus removal from wastewater, making use of the phenomenon of metals corrosion in wastewater. Metal ions are introduced to the solution as an effect of corrosion, instead of the up till now applied coagulation method. Likewise in the coagulation process, as a result of the occurring reactions (simplifying the mechanism more complicated in practice), sludge precipitates containing among others phosphorus. The experiments were carried out with media contain steel and aluminium. The most effective in phosphorus removal from wastewater was the uniform steel medium. The concentration of 1 mg P dm⁻³ orthophosphates in the effluent seems very realistic and even lower values can be achieved.
3

Influence of metal ions introduction to the solution by corrosion on phosphorus removal from waste water

51%
Wysocka I., Krzemieniewski M., Janczukowicz W., Pesta J.
Natural Sciences
|
2001
|
tom 09
4
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Thallium hyperaccumulation in Polish populations of Biscutella laevigata (Brassicaceae)

39%
Wierzbicka M., Pielichowska M., Abratowska A., Wilkomirski B., Wysocka I., Panufnik-Medrzycka D., Bulska E.
Acta Biologica Cracoviensia. Series Botanica
|
2016
|
tom 58
|
nr 2
Biscutella laevigata L. is known as a Tl hyperaccumulator. In Poland Biscutella laevigata occurs in the Tatra Mts (Western Carpathians) and on the calamine waste heap in Bolesław near Olkusz (Silesian Upland). The purpose of this work was to evaluate whether plants of both populations were able to accumulate an elevated amount of thallium in their tissues. The plants were cultivated in calamine soil in a glasshouse for a season and studied at different ages – from 2-week-old seedlings to 10-month-old adults. Additionally, the plants were grown for ten weeks in calamine soil with EDTA to enhance Tl bioavailability. The total content of Tl in plant tissues after digestion was determined by ICP-MS, whereas its distribution in leaves was studied by LA-ICP-MS. Of the total content of Tl in the soil in the range of (15.2–66.7) mg·kgˉ¹d.m., only (1.1–2.1) mg·kgˉ¹d.m. was present in a bioavailable form. The mean content in all the plants grown on the soil without EDTA was 98.5 mg·kgˉ¹d.m. The largest content was found in leaves – 164.9 mg·kgˉ¹d.m. (max. 588.2 mg·kgˉ¹d.m.). In the case of plants grown on the soil enriched with EDTA, the mean content in plants increased to 108.9 mg·kgˉ¹d.m., max. in leaves – 138.4 mg·kgˉ¹d.m. (max. 1100 mg·kgˉ¹d.m.). The translocation factor was 6.1 in the soil and 2.2 in the soil with EDTA; the bioconcentration factor amounted to 10.9 and 5.8, respectively. The plants from both populations did not contain a Tl amount clearly indicating hyperaccumulation (100–500 mg·kgˉ¹d.m.), however, high (>1) translocation and bioconcentration factors suggest such an ability. It is a characteristic species-wide trait; B. laevigata L. is a facultative Tl hyperaccumulator. The largest Tl amount was located at the leaf base, the smallest at its top. Thallium also occurred in trichomes, which was presented for the first time; in this way plants detoxify Tl in the above-ground parts. Leaves were much more hairy in the Bolesław plants. This is an adaptation for growth in the extreme conditions of the zinc-lead waste heap with elevated Tl quantity.
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