A feasibility study on the use of chemically modified sawdusts bearing fatty alkyl chains for removal of oleic acid and olive-oil from water

Cellulosic Substrates for Removal of Pollutants from Aqueous Systems: A Review. 3. Spilled Oil and Emulsified Organic Liquids

“…Increased uptake of oil onto cellulosic substrates has been shown following alkylation, which made the materials more hydrophobic (Ball 1973;Maurin et al 1999;Sun et al 2002Sun et al , 2003Ludwick et al 2003;Deschamps et al 2003a,b;Adebajo and Frost 2004;Dankovich and Hsieh 2007;Rattanawong et al 2007;Said et al 2009;Sathasivam and Haris 2010;Bayer et al 2011;Tao et al 2011;Gao et al 2010Gao et al , 2011Gao et al , 2012Cervin et al 2012;Payne et al 2012). Alternatively, wax can be applied to render the surfaces more hydrophobic and more capable of sorbing oil (Raible 1990).…”

“…Even greater benefits, in terms of oil sorption capacity, have been demonstrated when cellulosic structures have been derivatized with longerchain alkyl groups (Ball 1973;Maurin et al 1999;Deschamps et al 2003a,b;Ludwick et al 2003;Dankovich and Hsieh 2007;Said et al 2009;Cervin et al 2012) or with oilloving cyclodextrins (Ding et al 2011;He et al 2012). Rosin, a hydrophobic agent that is often used to reduce the water-absorptivity of paper, has been shown also to improve the ability of papermaking fibers to take up oil (Ericsson 1985).…”

“…As already discussed, many investigators have treated cellulosic substrates with hydrophobic agents in an effort to make them more suitable for collection of oils (Ball 1973;Maurin et al 1999; and many others). However, as reported by Payne et al (2012), such an approach does not aid in the sorption of oils onto dry cellulosic material.…”

Chemical modification of cellulose by acylation: Application to adsorption of methylene blue

“…During the last years, many research teams have had an interest in cellulose compounds for waste treatment, because they are quite easily available and renewable. Cellulose is the most abundant polymer on earth (Satge et al 2002, Chauvelon et al 1998, Gourson et al 1999 and derived substrates are suitable for trapping dyes (Marchetti et al 2000), organic (Maurin et al 1999, Aloulou et al 2006, Alila and Boufi, 2009) and inorganic (Randall et al 1976, Li and Bai 2005, Navarro et al 1999 pollutants. Chemical modification of cellulose (e.g.…”

Preparation and use of sawdusts bearing quaternary ammonium groups for removal of anionic dyes from water

“…Wood-byproducts have received during the last few years particular attention owing to their economic advantages for the removal of many pollutants. Inorganic pollutants like heavy metal ions (Randall 1977;Henderson et al 1977a, b;Larsen and Schierup 1981;Srivastava et al 1986;Bhargava et al 1987;Aoyama et al 1993;Gaballah et al 1993;Seti et al 1998) as well as organic pollutants like fats (Mazet et al 1993;De Petris 1993;Noma 1993;Yamada 1994;Maurin et al 1999) or dyes (Mazet et al 1990;Dusart et al 1991) have been reported to be removed by various natural substances such as barks, sawdusts or other agricultural by-products. All these natural adsorbants are inexpensive and easily available but possess relatively low binding capacities.…”