Separation of dyes/oils from water by diesel exhaust emission soot coated polyurethane foam: a kinetic and equilibrium isotherm study

Diesel exhaust emission soot (DEES) collected and coated on polyurethane foam (PUF). DEES coated foam (DEES-foam) was found hydrophobic and oleophilic in nature and can be used for oil-water separation. Kinetic study of oil sorption showed that the rate of sorption directly dependent on the viscosity of the oil. Petrol and engine oils were found fastest and slowest to absorb on DEES-foam, respectively. Pseudo-second order kinetic models fitted best to both oil and dye adsorption kinetic data. Maximum adsorption capacity for the adsorption of rhodamine B (RB) was found to be 17.7 g g−1. Langmuir isotherm was most appropriate to isotherm data of adsorption and RL < 1 (Langmuir dimensionless constant) showed favorability of adsorption process. The adsorbed dye was successfully desorbed in ethanol and DEES was found reusable for multiple cycles.

• Publication year

  2019

• Venue

  Engineering Research Express

• Publication date

  2019-07-18

• Fields of study

  Materials Science, Physics, Chemistry, Environmental Science

• Identifiers
  DOI 10.1088/2631-8695/ab2fa0
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar

• No claims are published for this paper.

• No concepts are published for this paper.

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