Separation of motor oils, oily wastes and hydrocarbons from contaminated water by sorption on chrome shavings.

In this paper, the ability of chrome shavings to remove motor oils, oily wastes and hydrocarbons from water has been studied. To determine amount of hydrocarbons sorbed on tanned wastes, a FT-NIR methodology was used and a multivariate calibration based on partial least squares (PLS) was employed for data treatment. The light density, porous tanned waste granules float on the surface of water and remove hydrocarbons and oil films. Wastes fibers from tannery industry have high sorption capacity. These tanned solid wastes are capable of absorbing many times their weight in oil or hydrocarbons (6.5-7.6g of oil and 6.3g of hydrocarbons per gram of chrome shavings). The removal efficiency of the pollutants from water is complete. The sorption of pollutants is a quasi-instantaneous process.

[1]  B. Nair,et al.  Use of Chromium−Collagen Wastes for the Removal of Tannins from Wastewaters , 2004 .

[2]  W. Doane,et al.  Oil Absorbency of Graft Copolymers from Softwood Pulp , 1986 .

[3]  P. Gschwend,et al.  Sorption of monoaromatic hydrocarbons to wood , 2000 .

[4]  E. L. Schrader.  Remediation of floating, open water oil spills: Comparative efficacy of commercially available polypropylene sorbent booms , 1991 .

[5]  Maryann M. Taylor,et al.  Treatment of Sheepskin Chrome Shavings. Isolation of High Value Protein Products and Reuse of Chromium in the Tanning Process , 1999 .

[6]  M. Toyoda,et al.  Heavy oil sorption using exfoliated graphite: New application of exfoliated graphite to protect heavy oil pollution , 2000 .

[7]  S. J. Gregg,et al.  Adsorption Surface Area and Porosity , 1967 .

[8]  W. S. Anthony.  Absorption of Oil with Cotton Products and Kenaf , 1994 .

[9]  Maryann M. Taylor,et al.  Production and potential uses of co-products from solid tannery waste , 1996 .

[10]  Maryann M. Taylor,et al.  Processing of leather waste: pilot scale studies on chrome shavings. I. Isolation and characterization of protein products and separation of chrome cake , 1998 .

[11]  M. Radetić,et al.  Recycled wool-based nonwoven material as an oil sorbent. , 2003, Environmental science & technology.

[12]  M. Azzi,et al.  Removal of methylene blue from aqueous solutions by absorption on tanned solid wastes , 2002 .

[13]  G. Deschamps,et al.  Oil removal from water by selective sorption on hydrophobic cotton fibers. 1. Study of sorption properties and comparison with other cotton fiber-based sorbents. , 2003, Environmental science & technology.

[14]  I. Gaballah,et al.  Removal of Hydrocarbons from Wastewater Using Treated Bark , 2001, Journal of the Air & Waste Management Association.

[15]  L. M. Viana,et al.  UV/Vis spectra and solubility of some naphthoquinones, and the extraction behavior of plumbagin from Plumbago scandens roots in supercritical CO2 , 2006, Analytical and bioanalytical chemistry.

[16]  M. Azzi,et al.  Removal of dyes from aqueous solutions by adsorption on chrome-tanned solid wastes generated in the leather industry , 2003 .

[17]  Hyung-Min Choi,et al.  Cotton Nonwovens as Oil Spill Cleanup Sorbents , 1993 .

[18]  Rinn M. Cloud,et al.  Natural sorbents in oil spill cleanup , 1992 .