Feasibility of montmorillonite-assisted adsorption process for the effective treatment of organo-pesticides

Abstract

A B S T R A C TOver the years, the emergence of pesticides practice has prevailed to be the most intricate environmental turmoil amongst the scientific community. Specifically, pesticides constitute an accumulative, persistent and detrimental impact towards the survival of flora, fauna and environmental matrix. This has inspired a developing research with a variety of treatment technologies. Adsorption is recognized as the most efficient and promising approach, due to the ease of operation, simplicity of design, insensitivity to the toxic substances and superior capability for removing a broad range of pollutants. Its diverse applications, however, are retarded by the high cost of adsorbents and difficulties associated with regeneration. Montmorillonite and its derivatives, a unique group of under-utilized clay-based minerals has been proposed to be a suitable candidate for the treatment of contaminated wastewater. It plays a key role as the natural scavenger of pesticides, due to the abundantly availability, large specific surface area and high adsorptive and ion exchange properties. This paper describes the origin, physical, chemical and physicochemical properties of natural montmorillonite. The preparation procedure, reusability, commercial product and economical evaluation are highlighted. The specific classification, environmental and health implication of organo-pesticide are discussed. The revolution of montmorillonite-assisted adsorption process for the remediation of organo-pesticide was summarized. Additionally, the characterizations, surface chemistry and mechanism investigation are outlined.

Preparation and characterisation of activated carbon from Vitisvinifera leaf litter and its adsorption performance for aqueous phenanthrene

“…These includes; adsorption, precipitation, coagulation-flocculation, sedimentation, flotation, filtration, membrane processes, electrochemical techniques, biological processes, chemical reactions and ion exchange amongst others [5][6][7]. In recent times, adsorption treatment technology, which is a surface phenomenon had been recognised as the most efficient and promising approach in wastewater treatment, due to its simplicity, economic viability, technical feasibility, insensitivity to toxicants, high removal capacity for wide-range of pollutants and environmental friendliness [5,8]. Meanwhile, adsorption technique has its own limitations; such as non-destructive nature of the pollutant which could lead to secondary pollution, challenges of regeneration and post treatment of adsorbents.…”

Rapid Monitoring of Organochlorine Pesticide Residues in Various Fruit Juices and Water Samples Using Fabric Phase Sorptive Extraction and Gas Chromatography-Mass Spectrometry

“…Therefore, detection of OCP residues is of utmost importance in estimating potential health risks, performing ecotoxicological risk assessments, and enforcing regulations [12,13]. The development of simple, fast, reliable and environmentally friendly methods that enable the determination of OCPS at trace levels in aqueous samples is of great concern nowadays [14,15].…”

Synthesis of Si /rgo Nano-composites as Anode Electrode for Lithium-ion Battery by Ctab and Citrate Methods: Physical Properties and Voltage-capacity Cyclic Characterizations.

“…Several methods have been reported for the synthesis of Si-graphene nano-composites: mixing the synthesized Si nanocrystals with graphene or graphene oxide Physically or by chemical vapor deposition (CVD) [34]. Direct growth of graphene on Si nanoparticles, Si coating on graphene by CVD, thermal reduction [35], freeze drying / thermal reduction [36][37][38][39], spray drying / thermal reduction [40], microwave drying / thermal reduction [41] is used to make Si-graphene nano-composite.…”