Study of the possibility of using composite sorbents to purify water from oil products at low temperatures
E.A. Tatarintseva, L.N. Olshanskaya
Section: Ecologization of industry
The development of oil fields in the Arctic is associated with high risks of environmental pollution. Increased hydrocarbon production is accompanied by concerns regarding the level of preparedness for potential emergency situations associated with oil spills. The infrastructure in most areas of the Far North does not meet the requirements for the prompt elimination of large-scale environmental pollution arising from oil production activities. The aim of this study was to study the feasibility of using composite sorption materials made from industrial waste to purify water from oil spills at temperatures ranging from –5 to +20 оC. We studied the physicomechanical properties as the important characteristics of sorbents. Specific surface area of the studied sorbents ranges from 20 to 35 m2/g, density is < 1 cm3/g, porosity is approximately 80–90 %, and mechanical strength is high. The proposed sorbents were shown to possess hydrophobic properties, as evidenced by a high contact angle (130о–140о) and good buoyancy for 96 hours. The oil sorption time with a purification efficiency exceeding 99.0 % is 20 minutes. The oil absorption capacity of the obtained materials for oil recovery at low temperatures (–5 оC) ranges from 3 to 22 g/g. A sorbent with magnetic properties was obtained due to the content of ferritized galvanic sludge, significantly simplifying the process of its collection from the water surface. The obtained sorption materials solve the problem of water purification from oil as well as the problem of producing low-cost sorbents from industrial waste such as polyethylene terephthalate, galvanic sludge, and sawdust.
ISSN 1995-4301
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