Evaluation of a Sodic Organoclay as Adsorbent for Removing Oil/Water in a Synthetic Wastewater

Abstract

This study aims to conduct an investigation on the performance of an organophilic clay as adsorbent in the oil/water separation process. One goal of this work is to prepare and characterize untreated sodium clay (BSN-01) from Argentina and treated BSN-01. The method used to prepare the organoclay replaces the interlayer cations of the clay (Na+) by quaternary ammonium cations. Tests used X-ray diffraction to verify the obtaining of organoclays. The diffractograms showed that the basal distance of the clay BSN-01 was modified, indicating that the quaternary ammonium salt was intercalated. The results of Cation Exchange Capacity suggested that the interlayer cations of the clay were exchanged with the quaternary cations of the surfactant. Finite bath tests determined the rate and capacity of oil removal by the treated clay. Up to 42.63 mg/g of oil removal capacity (92.34% efficiency) was reached, indicating that the clay treated with CTAC is an excellent alternative in the process of oil removal.

Batch and continuous of oil removal using organoclay and low-cost ceramic membrane

“…This significant increase in d(001) of organoclay shows the effective incorporation of surfactant in the interlayer of the clay layers. This expansion of the clay layer was also found in the literature regardless of the salt used (Bergaya, 2006;Rodrigues et al, 2010;Mota el al., 2011;Silva et al, 2014).…”

Preparation of Three‐Dimensional Chitosan–Graphene Oxide Aerogel for Residue Oil Removal

“…Among these methods, the adsorption process is widely adopted in this area because of its complete collection and removal of oil. Adsorbents such as peat (Cojocaru et al, 2011), kapok (Ali et al, 2012;Wang et al, 2013), straw (Ibrahim et al, 2010), sawdust (Chouchene et al, 2010), organophilic clays (da Silva et al, 2014), exfoliated graphite (Ji et al, 2009;, expanded perlite (Alihosseini et al, 2010), and activated carbon (Sorlini et al, 2015;Tan et al, 2009) have been tried in the adsorption of waste oil. Nevertheless, these systems require preliminary treatment using physicochemical and microbiological treatments to enhance the adsorption.…”