1. Research Unit, Materials, Processes and Environment (UR-MPE) , M’Hamed Bougara University , 35000 Boumerdes , Algeria
2. Laboratory of Natural Materials Technology, Wood and Paper Chemistry , Åbo Akademi University , Porthansgatan 3-5 , 20500 Turku , Finland
3. Environmental and Chemical Engineering Department , University of the Basque Country (UPV/EHU) , Plaza Europa, 1 , 20018 Donostia-San Sebastián , Spain