Mitigation of clofibric acid pollution by adsorption: A review of recent developments. Issue 5 (October 2020)

• Record Type: Journal Article
• Authors: Ighalo, Joshua O.; Ajala, Oluwaseun Jacob; Umenweke, Great; Ogunniyi, Samuel; Adeyanju, Comfort Abidemi; Igwegbe, Chinenye Adaobi; Adeniyi, Adewale George
• Is Part Of: Journal of environmental chemical engineering. Volume 8:Issue 5(2020)
• Publication Date: 2020-10
• Subjects: AC activated carbon -- BDD boron-doped diamond -- CA clofibric acid -- DFT density functional theory -- EDCs endocrine disruption chemicals -- HMS hexagonal mesoporous silica -- MIP molecularly imprinted polymers -- MOF metal organic frameworks -- MIEX magnetic ion-exchange resin -- NOEC no observed effect concentration -- NOM natural organic matter -- PhACs pharmaceutically active compounds -- PPCPs pesticides and personal care products -- TSH thyroid stimulating hormone -- UV ultra-violet -- WTP wastewater treatment plant; Adsorption -- Clofibric acid -- Ecotoxicology -- Environment -- Pollution; Chemical engineering -- Environmental aspects -- Periodicals; Environmental engineering -- Periodicals; Chemical engineering -- Environmental aspects; Environmental engineering; Periodicals; 660.0286
• DOI: 10.1016/j.jece.2020.104264
• Languages: English
• ISSNs: 2213-2929

Abstract

Graphical abstract: Highlights: Clofibric acid (CA) adsorption studies in the last decade was reviewed. Carbon-based materials were the best class of adsorbents (>300 mg/g) for CA adsorption. CA adsorption was mostly best fit to Langmuir or Freundlich isotherm. Kinetics was majorly according to the pseudo-second order model. The disposal for used adsorbent after CA uptake could be explored in future work. Abstract: Clofibric acid (CA) is one of the recalcitrant pharmaceutical compounds observed as a pollutant in the environment in recent times. This paper aimed to evaluate the recent developments in the last decade on the mitigation of CA from aqueous media by adsorption. The adsorbents were classed into carbon-based materials, clay and minerals, and polymer and resins. It was observed that the best class of adsorbents (with adsorption capacity >300 mg/g) for CA adsorption were carbon-based materials. The highest reported adsorption capacity for CA in the last decade was 994 mg/g by graphene nano-sheets. CA adsorption was mostly best fit to Langmuir or the Freundlich isotherm and kinetics was majorly according to the pseudo-second order model. CA can successfully be desorbed form adsorbent media by suitable eluents and reused. This suggests that adsorption can be economical in an industrial scale for the removal of CA from effluents. For future work, graphene oxide and metal organic frameworks could be modified for higher adsorption capacity. The disposal technique for used adsorbent after CA uptake could be explored.