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Ramya Prasanthi Mokkapati, Jayasravanthi Mokkapati and Venkata Nadh Ratnakaram

, G.M., Chen, L., Deng, J.H., Zhang, X.R. & Niu, Q.Y. (2012). Copper (II) removal by pectin–iron oxide magnetic nanocomposite adsorbent. Chem. Eng. J. 185, 100–107. DOI: 10.1016/j.cej.2012.01.050. 21. Li, K., Fu, S., Zhan, H., Zhan, Y. & Lucia, L. (2010). Analysis of the chemical composition and morphological structure of banana pseudo-stem. Bioresources 5(2), 576–585. DOI: 10.15376/biores.5.2.576-585 22. Firdous, R. & Gilani, A.H. (2001). Changes in chemical composition of sorghum as influenced by growth stages and cultivar. Asian Australas. J

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Łucja Dybowska-Sarapuk, Sławomir Rumiński, Grzegorz Wróblewski, Marcin Słoma, Anna Młożniak, Ilona Kalaszczyńska, Małgorzata Lewandowska-Szumieł and Małgorzata Jakubowska

Res. 4(7), 675–684. DOI: 10.1007/s12274-011-0123-z. 3. Jangho, K., Kyoung, S.C., Yeonju, K., Ki-Tack, L., Hoon, S., Yensil, P., Deok-Ho, K., Pill-Hoon, C., Chong-Su, C., Soo, Y.K., Yun-Hoon, C. & Jong, H.C. (2013). Bioactive effects of graphene oxide cell culture substratum on structure and function of human adipose-derived stem cells. J. Biomed. Mater. Res. Part A. 101(12), 3520–3530. DOI: 10.1002/jbm.a.34659. 4. Carrow, J.K. & Gaharwar, A.K. (2015). Bioinspired Polymeric Nanocomposites for Regenerative Medicine. Macromol. Chem. Phys. 216(3), 248

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Elwira Tomczak and Paweł Tosik

model for the sorption of cadmium onto tree fern: A comparison of linear and non-linear methods. Wat. Res., 40, 119-125. DOI:10.1016/j.watres.2005.10.040. Ho Y.S., Wang C.C., 2004. Pseudo-isotherms for the sorption of cadmium ion onto tree fern. Proc. Biochem., 39, 761-765. DOI:10.1016/S0032-9592(03)00184-5. Jain M., Garga V.K., Kadirvelub K., 2009. Chromium(VI) removal from aqueous system using Helianthus annuus (sunflower) stem waste. J. Haz. Mat., 162(1), 365-372. DOI: 10.1016/j.jhazmat.2008.05.048. Lambrecht R

Open access

Maciej Pilarek

fluorinated liquids. J. Chem. Thermodyn., 39, 847-854. DOI: 10.1016/j.jct.2006.11.012. Dias A.M.A., Freire M., Coutinho J.A.P., Marrucho I.M., 2004. Solubility of oxygen in liquid perfluorocarbons. Fluid Phase Equilibr., 222-223, 325-330. DOI: 10.1016/j.fluid.2004.06.037. Douglas T.E.L., Pilarek M., Kalaszczyńska I., Senderek I., Skwarczyńska A., Cuijpers V.M.J.I., Modrzejewska Z., Lewandowska-Szumieł M., Dubruel P., 2014. Enrichment of chitosan hydrogels with per fluorodecalin promotes gelation and stem cell vitality. Mater. Lett., 128, 79

Open access

Valentina V. Pidlisnyuk, Larry E. Erickson, Josef Trögl, Pavlo Y. Shapoval, Jan Popelka, Lawrence C. Davis, Tetyana R. Stefanovska and Ganga M. Hettiarachchi

Abstract

Peculiarities of metals uptake by the biofuel crop Miscanthus x giganteus were explored during plant growth at soil from the military site (Sliač, Slovakia). The experiment was carried out in greenhouse during two vegetation seasons. Research soil was predominantly elevated in Fe and Ti, while other metals (As, Cu, Mn, Sr, Zn and Zr) were presented at order of magnitude lower concentrations. No inhibition of plant growth was observed. The calculated Bioconcentration Factor showed that levels of metals’ accumulation by plant roots, stems and leaves were independent of metals’ concentrations in the soil. The accumulation of metals by stems and leaves was much lower than by roots. As, Zr, Ti were almost not accumulated by stems and leaves during both seasons; accumulation of Cu, Fe, Mn, Zn and Sr was not essential which confirmed that biomass of M. x giganteus might be processed for the energy purpose.

Open access

Hajira Haroon, Syed Mubashar Hussain Gardazi, Tayyab Ashfaq Butt, Arshid Pervez, Qaisar Mahmood and Muhammad Bilal

Abstract

Cr(VI) adsorption was studied for abundantly available low-cost lignocellulosic adsorbents in Pakistan namely, tobacco stalks (TS), white cedar stem (WCS) and eucalyptus bark (EB). Several process variables like contact time, adsorbent dose, pH, metal concentration, particle size and temperature were optimized in batch mode. EB showed high Cr(VI) adsorption of 63.66% followed by WCS 62% and TS 57% at pH 2, which is higher than most of the reported literature. Langmuir isotherm (R2 = 0.999) was well fitted into the equilibrium Cr(VI) data of EB, suggesting homogeneous active sites and monolayer coverage of Cr(VI) onto the EB surface. Freundlich (R2 = 0.9982) isotherm was better fitted to the equilibrium data of TS and WCS, revealing the adsorption sites with heterogeneous energy distribution and multilayer Cr(VI) adsorption. Moreover, the Cr(VI) adsorption of studied adsorbents followed the pseudo-second order kinetic model. Thermodynamic properties were investigated in two temperature ranges, i.e., T1 (303–313 K) and T2 (313–323 K). TS and EB showed the exothermic at T1 and endothermic reactions at T2 with entropy controlled adsorption at the solid-liquid interface, and WCS exhibited an opposite thermal trend with decreasing disorderness at solid-liquid interface as temperature rises. Gibbs free energy (ΔG>0) confirmed the non-spontaneous adsorption process for all studied adsorbents.

Open access

K. Szmuc, M. Kus-Liskiewicz, Ł. Szyller, D. Szmuc, M. Stompor, I. Zawlik, T. Ruman, S. Wołowiec and J. Cebulski

Abstract

The composite containing nanosilver uniformly deposited on matrix composed of CaHPO4 x 2H2O (brushite, ca 89 mass %), CaHPO4 (monteonite, ca 9.5 mass%), and Ag3PO4 (0.5 mas%) was obtained by addition of calcium nitrate and silver nitrate aqueous solution at 30:1 Ca:Ag molar ratio into excess of (NH4)2PO4 solution at pH 5.0 – 5.5. The isolated solid was characterized by STEM, XRD, and LDI mass spectrometry. It has been found that nanosilver was uniformly distributed within composite as <10 nm diameter sized nanoparticles. Determination of silver by AAS showed that 60% of silver is present as Ag(0) nanoparticles, the present as matrix Ag3PO4 as identified by XRD method. The composite showed strong growth inhibition in E. coli and P. aeruginosa strains, and moderate towards S. aureus. The C. albicans cells were the most resistant to the tested material, although still composite was moderately cytostatic for the yeast.

Open access

Li Cong, Zhang Li, Zhang Guanqun, Xu Jianguo and Zhang Long

ned Kraft Pulp. Holzforschung 54(6), 618-624. DOI:10.1515/HF.2000 .104. 16. Xiao, B., Sun, X.F. & Run, R.C. (2001). Chemical, structural, and thermal charactcrizations of alkali-soluble ligins and hemicelluloses and cellulose from maize stems, ryc straw, and rice straw, Polym. Degrad. Stab. 74(2), 307-319. DOI: 10.1016/ S0141-3910(01)00163-X. 17. Sain, M. & Panthapulakkal, S. (2006). Bioprocess preparation of wheat straw fi bers and their characterization , Ind Crop Prod. 23(1), 1-8. DOI: 10.1016/j.indcrop.2005

Open access

Krzysztof Górnicki, Agnieszka Kaleta, Andrzej Bryś and Radosław Winiczenko

drying time and product quality. Bioresources 8(1), 855–863. DOI: 10.15376/biores.8.1.855-863. 6. Dincer, I. (1998). Moisture transfer analysis during drying of slab woods. Heat Mass Trans. 34(4), 317–320. DOI: 10.1007/s002310050265. 7. Gigler, J.K., van Loon, W.K.P., van den Berg, J.V., Sonneveld, C. & Meerdink, G. (2000). Natural wind drying of willow stems. Biomass Bioenerg 19(3), 153–163. DOI: 10.1016/S0961-9534(00)00029-5. 8. Weres, J., Olek, W. & Guzenda, R. (2000). Identification of mathematical model coefficients in the analysis of the

Open access

Elżbieta Gąsiorek and Marta Wilk

.02.002. Nielsen, C. (1995). Utilisation of straw and similar agricultural residues. Biomass and Bioenergy , 9(1-5), 315-323, DOI:10.1016/0961-9534(95)00099-2. Paukszta, D. (2006). Chemical composition of the lignified part of the rape straw stem. Zeszyty Instytutu Hodowli i Aklimatyzacji Roślin w Radzikowie , Zeszyt 1, 143-150 (in Polish). Van de Velde, K. & Kiekens, P. (2001). Thermoplastic pultrusion of natural fibre reinforced composites. Composite Structures 54(2-3), 355-360, DOI:10.1016/S0263