Waste fish oil was obtained from a fishmeal plant (Semnan, Iran).
Some of the physical and chemical properties of WFO were summarized inTable 1.
The fatty acid compositions of the waste fish oil were analyzed
using a gas chromatography (GC) analyzer (Claus 580 GC model,
Perkin Elmer Co., USA). Powdered wood based activated carbon was
obtained from Jacobi (Sweden). Methanol (99.8%) and sulfuric acid
(98%) were obtained from Merck Co. (Germany). The chemicals were
used as received without further purification