Utilization of poplar wood sawdust for heavy metals removal from model solutions

Abstract

Some kinds of natural organic materials have a potential for removal of heavy metal ions from wastewater. It is well known that cellulosic waste materials or by-products can be used as cheap adsorbents in chemical treatment process. In this paper, poplar wood sawdust were used for removal of Cu(II), Zn(II) and Fe(II) ions from model solutions with using the static and dynamic adsorption experiments. Infrared spectrometry of poplar wood sawdust confirmed the presence of the functional groups which correspond with hemicelluloses, cellulose and lignin. At static adsorption was achieved approximately of 80 % efficiency for all treated model solutions. Similar efficiency of the adsorption processes was reached after 5 min at dynamic condition. The highest efficiency of Cu(II) removal (98 %) was observed after 30 min of dynamic adsorption. Changes of pH values confirmed a mechanism of ion exchange on the beginning of the adsorption process.

Using of wooden sawdust for copper removal from waters

“…In last two decades is booming for the use of low cost organic materials for heavy metal ions removal. It started with the application of biomass and agricultural waste materials as peat, rice husk, leaves or seeds (Bailey et al 1999;Vieira and (Bailey et al 1999;Demcak et al 2017b) Sawdust 3.9 3.7 -7.3 - (Bailey et al 1999;Holub et al 2016) Volesky 2000; Demcak et al 2017a). The major advantages of adsorption on natural sorbents in comparison to conventional methods include low cost, high efficiency, minimization of chemical or biological sludge, no additional nutrient requirement, regeneration of biosorbents, and possibility of metal recovery (Leng et al 2015).…”

“…In several studies (Shukla et al 2002;Šćiban et al 2007;Asadi et al 2008) it has been reported that the wooden adsorbent materials such as straw, tree bark, peanut skins, wood sawdust, moss and peat are a suitable replacement of industrial produced sorbents with comparable efficiencies of pollutants removal. The wooden sawdust is a perspective low-costs adsorbent material for the removal of heavy metal ions, some types of acid, basic dyes, and other unwanted compounds from wastewaters (Demcak et al 2017b). The efficiency of the wooden sawdust adsorption processes is also affected by the composition of the wastewater where the formation of complex compounds of metal cations with wood sawdust functional groups can take place resulting in the decrease or a failure of the heavy metals adsorption (Ahmad et al 2009).…”

Removal of Copper from Water Solutions by Adsorption on Spruce Sawdust

“…Adsorption, in comparison to other methods like chemical precipitation, electrochemical technologies, ion exchange, membrane filtration, and others, is cheaper, more flexible, more effective; has greater simplicity of design, ease of operation, and insensitivity to toxic pollutants; and results in a high quality purified product. Sorption methods have come to the forefront due to their efficiency in the removal of pollutants from water or wastewater that are too stable to be removed by biological processes [4,5].…”

Optimization of Copper Removal by Photovoltaic Electrocoagulation from Aqueous Solution Using Response Surface Methodology Towards Sustainable Development

“…However, the excessive Cu 2+ utilisation has an impact on the liver, and subsequent vomiting causes headache, nausea, respiratory problems, abdominal pain and, lastly, gastrointestinal bleeding [Simsek et al, 2013; El-Ashtoukhy and Abdel-Aziz, 2013; Parlak and Arar, 2018]. Degradation of copper ions from water can be achieved by using the chemical or physicochemical methods [Gunatilake, 2015] such as adsorption [Hossain, 2012;Balintova et al, 2012;Demcak et al, 2017] ion-exchange [Edebali and Pehlivan, 2016], photocatalysis [Kanakaraju et al, 2017], or electrochemical processes [Kamaraj et al, 2013;Dermentzis et al, 2011]. Compared to this research, electrocoagulation compares well as an alternative to the conventional wastewater removal techniques [Al-Saydeh et al, 2017].…”