Recycling Oily Sludge Pyrolysis Residues as Nano-adsorbents

ABSTRACT: Oily sludge is a major oily waste originating from the oil refining industry production process. It is very difficult to handle and may harm portions (i.e., ecosys-tems and human health) of the environment. Oil and gas may be separated from oily sludge and economically recovered by pyrolysis technology. However, the by-product residue of pyrolysis would likely contribute to secondary pollution if a disposal method was not competent. A novel nano-adsorbent, NMA-12, was developed by synthesization between a supermolecule compound and an oily sludge pyrolysis residue with participa-tion from chemically modified nanometer materials. Static adsorption and desorption kinetic characteristics of the adsorbent (NMA-12) were studied with Congo Red as the test adsorbate. Results suggest adsorption equilibrium time was approximately 150 min-utes and that the apparent adsorption rate constant of Congo Red was k298 = 0.02 s–1. Desorption volume of Congo Red at the same time was greater in stripping liquid where it reached 80.7 % versus in pure water. This research was devoted to finding a feasible technology for treatment of oily sludge pyrolysis residues as a means of resource recy-cling