An evaluation of different preparation methods of the M. Oleífera-based natural coagulating agent in the treatment of produced water from petroleum

Abstract

Before the petroleum produced water can be rejected or disposed of, it must undergo a series of treatments. Among these is coagulation, which is an important stage for the removal of organic and inorganic materials from the water. The use of environmentally friendly coagulants has become a viable alternative for the treatment of water, and has shown advantages, as opposed to inorganic chemicals, specifically in terms of biodegradability, low toxicity, and a low production index of residual mud. As such, this work's objective is to evaluate different preparation methods for a moringa-based coagulant and to determine its efficacy in removing the oils and gravels present in the produced water. Five preparation methods of the moringa-based coagulant were proposed. The coagulation/flocculation tests were conducted varying the concentration of Moringa oleifera Lam between 50 ppm to 300 ppm, with samples of synthetic produced water (SPW) in order to determine the best concentration in each preparation method. In general, the results proved effective, reaching a maximum removal of oil of 96%, in the concentration of 100 ppm, for the coagulant prepared mesh 20 ( ).

Keywords

• Coagulation. Produced Water from Petroleum. Oil and Gravel Content. Moringa Oleifera Lam.