tailieunhanh - Research on Oil Adsorption Capacity of Carbonized Material Derived from Agricultural by-product (Corn Cob, Corn Stalk, Rice Husk) Using in Oily Wastewater Treatment
Oily wastewater discharged from machinery producing, mining, storage service, marine transporting. is one of the polluting sources to receiving waterbody. Adsorption onto carbonized material derived from agricultural by-products are proved to be the promising treatment for this type of wastewater. | VNU Journal of Science: Natural Sciences and Technology, Vol. 32, No. 3 (2016) 105-111 Research on Oil Adsorption Capacity of Carbonized Material Derived from Agricultural by-product (Corn Cob, Corn Stalk, Rice Husk) Using in Oily Wastewater Treatment Nguyen Thanh Ha*, Le Van Cat, Pham Vy Anh, Tran Thi Thuy Lien3* Department of Environmental chemistry, Institute of Chemistry, Vietnam Academy of Science and Technology Received 17 May 2016 Revised 15 August 2016; Accepted 01 September 2016 Abstract: Oily wastewater discharged from machinery producing, mining, storage service, marine transporting. is one of the polluting sources to receiving waterbody. Adsorption onto carbonized material derived from agricultural by-products are proved to be the promising treatment for this type of wastewater. Experiments implemented with the agro-wastes including: corn cob, corn stalk and rice husk with carbonizing temperature of 300-600 oC and retention time of 1-3h. According to the results of all carbonized materials, the decrease of oil adsorption accosiated with higher pyrolysis temperature, as well as longer retention duration. Under the same carbonizing conditions, the carbon derived from corn stalk have the higher adsorption capacity. The highest oil sorption capacity of g/g is of corn stalk derived carbon with temperature of 300 oC, retention time of 1h; while the lowest one of g/g is of material derived corn cob with temperature of 600 oC, 1h. The oil adsorption capacity is closely related to the porosity and oleophilic groups on the surface of the material. The results indicated that materials made from agricultural by-products, corn stalk in particular, are promising for oily wastewater treatment. Keywords: Corn cob, corn stalk, rice husk, oily wastewater. 1. Introduction * high C content, specific porosity of cellulose derived material, accordant with C based material production by carbonizing. The product is able to use for treatment wastewater, especially
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