tailieunhanh - Sorption studies of crude oil on acetylated sawdust

The results showed that the acetylation of sawdust enhanced the equilibrium sorption capacity of biomass towards the crude oil. Kinetic studies have shown that the data better fitted the Langmuir moldel than the Freundlich model. The maximum adsorption capacity of AS was g/g of crude oil. These values indicated that the acetylated sawdust is a suitable sorbent with potential for further development for oil spill treatment. | Journal of Science and Technology 54 (2A) (2016) 201-206 SORPTION STUDIES OF CRUDE OIL ON ACETYLATED SAWDUST Nguyen Trung Duc*, Nguyen Thanh Tung, Nguyen Van Khoi Institute of Chemistry, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay District, Hanoi, Vietnam * Email: ducnt224@ Received: 1 April 2016; Accepted for publication: 15 June 2016 ABSTRACT Acetylated sawdust (AS) has been studied as sorbent for crude oil spill clean-up operations in the aqueous environment. Sorption kinetics and isotherm studies were carried out under various experimental conditions. The experimental data were particularly tested using the Langmuir isotherm model and the Freundlich isotherm model. The results showed that the acetylation of sawdust enhanced the equilibrium sorption capacity of biomass towards the crude oil. Kinetic studies have shown that the data better fitted the Langmuir moldel than the Freundlich model. The maximum adsorption capacity of AS was g/g of crude oil. These values indicated that the acetylated sawdust is a suitable sorbent with potential for further development for oil spill treatment. Keywords: crude oil, acetylated, sawdust, sorption. 1. INTRODUCTION Oil spill causes a major problem on the environment. Various processes have been developed to remove oil from contaminated areas. There are three major classes of oil sorbents, namely, inorganic mineral products, organic synthetic products and organic natural products [1]. Most commonly used commercial sorbents are organic synthetic products. They have good hydrophobic and oleophilic properties, but their non-biodegradability is a major disadvantage [2]. A wide variety of natural organic products such as rice straw, corn corb, sawdust, kapok fiber are presently attractive sorbents for oil spill clean-up application [3, 4]. This is because cellulose fiber are inexpensive, biodegradable and posses high mechanical properties. The cellulosic products which exist in fibrous .

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