Tag Archives: zinc

905–914 K. Tihomirova, V. Denisova, L. Jaudzema and L. Mezule
Hydrolysed biomass waste as a potential biosorbent of zinc from water
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Hydrolysed biomass waste as a potential biosorbent of zinc from water

K. Tihomirova*, V. Denisova, L. Jaudzema and L. Mezule

Riga Technical University, Faculty of Civil Engineering, Research Centre for Civil Engineering, Water Research Laboratory, Kipsalas 6a–263, LV–1048 Riga, Latvia
*Correspondence: kristina.tihomirova@rtu.lv

Abstract:

In the last 10 years recycling of various materials and metal recovery from waste with low cost biosorbents or agricultural biomass has become popular trend. Lignocellulosic biomass is regarded as a sustainable resource for biofuel production. In this process, lignocellulosic biomass is partly degraded during chemical or biological hydrolysis, as a result, these agricultural waste materials usually present a disposal problem and have no economic value. Therefore, reuse of lignocellulosic waste materials as inexpensive and alternative sorbent for heavy metals in polluted aqueous solution.
The aim of this research was to evaluate the applicability of hydrolysed biomass waste for zinc removal from water solution. To evaluate the potential use of lignocellulosic biomass for biosorption, experiments were performed with dry, washed from organic matter and hydrolysed hay. The results showed that hydrolysed hay have lower biosorption capacity than washed and dried hay, however, it still can be used as a low-cost biosorbent for the removal of Zn in polluted aqueous solutions, because it showed relatively high cink sorption capasity (336–391 mg g-1).

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418–427 A. Kasiuliene, V. Paulauskas and J. Kumpiene
Influence of nitrogen fertilizer on Cd and Zn accumulation in rapeseed (Brassica napus L.) biomass
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Influence of nitrogen fertilizer on Cd and Zn accumulation in rapeseed (Brassica napus L.) biomass

A. Kasiuliene¹*, V. Paulauskas¹ and J. Kumpiene²

¹Aleksandras Stulginskis University, Institute of Environment and Ecology,
Studentu str. 11, Akademija, LT-53361 Kaunas dist., Lithuania
²Lulea University of Technology, Department of Civil, Environmental and Natural
Resources Engineering, SE 971 87 Lulea, Sweden
*Correspondence: alfreda.kasiuliene@gmail.com

Abstract:

Diffuse soil contamination with heavy metals and Cd in particular is a matter of serious concern. Application of conventional remediation methods usually is not feasible due to the large territories and relatively low heavy metal content. Thus, phytoremediation is seen as an alternative. Rapeseed was grown on Cd and Zn contaminated as well as clean soil under the greenhouse conditions. Solid and liquid nitrogen fertilizers were applied during the pot experiment in order to test their influence on heavy metal accumulation in plant tissues. Vegetative parameters were measured four times during the pot experiment and it was concluded, that the elevated concentrations of Cd and Zn in the soil did not disrupt the development of rapeseed plants. Furthermore, plants from contaminated soil produced significantly bigger seeds in comparison to plants from uncontaminated soil. Calculated Bioconcentration factors for rapeseed grown on Cd and Zn contaminated soil in all cases were below unity, thus possibility to use this plant species for phytoextraction purposes is limited, but it can be successfully grown on contaminated land as an energy crop. Application of nitrogen fertilizers had a significant effect on heavy metal accumulation and decreased Cd and Zn concentrations in rapeseed roots and stems with leaves were recorded. Accumulation differences between the liquid and solid fertilizer applications were negligible.

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509-516 M. Gibczyńska, E. Meller, S. Stankowski and Cz. Wołoszyk
Metal content in soil fertilized with brown coal fly ash
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Metal content in soil fertilized with brown coal fly ash

M. Gibczyńska¹, E. Meller², S. Stankowski³ and Cz. Wołoszyk⁴

¹ General Chemistry Department, University of Agriculture, 71 434 Szczecin,ul Słowackiego 17, Poland; e-mail: margi@px.pl
² Department of Soil Science, University of Agriculture, 71 434 Szczecin, ul Słowackiego 17,Poland; e-mail: Edward.Meller@agro.ar.szczecin.pl
³ Soil, Plant Cultivation and Biometry Department, University of Agriculture, 71 434 Szczecin,ul Słowackiego 17, Poland; e-mail: mail sstankowski@hoga.pl
⁴ Department of Environmental Chemistry, University of Agriculture, 71 434 Szczecin,ul Słowackiego 17, Poland; e-mail: woloszyk@agro.ar.szczecin.pl

Abstract:

The aim of the studies was evaluation of brown coal ash produced by Power Plant Group Pątnów-Adamów-Konin for agricultural purposes. The subject matter was the estimation of the influence of fly ash applied to light soil on the metal content of soils (aluminium, iron, manganese, copper, nickel and cobalt). The field experiment was conducted on light soil at the area of the Agricultural Experimental Station in Lipnik, Poland. The experiment was set up by means of randomized complete blocks in 4 replications. The study consisted of testing 7 variants (controlburned lime (CaO) dolomite lime CaCO3⋅MgCO3, ash from 1st electrofilterzone, from 2nd electrofilter zone, from 3rd electrofilter zone and mixture of ashes from three electrofilter zones). Lime fertilizers and ashes were applied in a dose corresponding to 1.0 hydrolytic soil acidity expressed in cmol H+ kg-1 of soil. Brown coal fly ash produced by Power Plants ZE PAK S.A., used as soil fertilizer, did not contribute to changes of content of the following metals: iron, zinc, copper, nickel, lead and cobalt in the tested soil. Soil-incorporated brown coal fly ash significantly increased the content of manganese. However, the obtained results did not exceed the allowable standard. In the soil of all fertilizer variants, where brown coal ash was applied, the content of mobile aluminium diminished. When brown coal ash produced by Power Plants ZE PAK S.A. was applied in the experiment, soil reaction changed from acid to neutral and its hydrolytic acidity decreased by ca 50%.

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