A novel technique for detoxification of phenol from wastewater: Nanoparticle Assisted Nano Filtration (NANF)

Abstract

BackgroundPhenol is one of the most versatile and important organic compound. It is also a growing concern as water pollutants due to its high persistence and toxicity. Removal of Phenol from wastewaters was investigated using a novel nanoparticle adsorption and nanofiltration technique named as Nanoparticle Assisted Nano Filtration (NANF).MethodsThe nanoparticle used for NANF study were silver nanoparticles and synthesized to three distinct average particle sizes of 10 nm, 40 nm and 70 nm. The effect of nanoparticle size, their concentrations and their tri and diparticle combinations upon phenol removal were studied.ResultsTotal surface areas (TSA) for various particle size and concentrations have been calculated and the highest was 4710 × 1012 nm2 for 10 nm particles and 180 ppm concentration while the lowest was for 2461 × 1011 for 70 nm and 60 ppm concentrations. Tri and diparticle studies showed more phenol removal % than that of their individual particles, particularly for using small particles on large membrane pore size and large particles at low concentrations. These results have also been confirmed with COD and toxicity removal studies.ConclusionsThe combination of nanoparticles adsorption and nanofiltration results in high phenol removal and mineralization, leading to the conclusion that NANF has very high potential for treating toxic chemical wastewaters.

Technological advancements in valorisation of industrial effluents employing hydrothermal liquefaction of biomass: Strategic innovations, barriers and perspectives

“…On the other hand, HTWW from manure and sewage sludge yield mostly neutral wastewater, whereas HTWW from algae was found to be more alkaline. Therefore, pH of HTWW is a very crucial parameter as it indicates the future application of wastewater (Naidu et al, 2016). Another critical parameter, COD, varies from 9.4 g/L for HTWW obtained from swine manure (Yang et al, 2018) to 185 g/L in case of the wastewater generated from hydrothermal treatment of algal biomass (Si et al, 2018).…”

MEUF for removal and recovery of valuable organic components present in effluents: A process intensified technology

“…Several techniques are practiced for mitigation of phenols from wastewater, such as photooxidation (Adán et al, 2014), Advanced Oxidation Processes (AOP) such as Wet Air Oxidation (WAO), Catalytic Wet Air Oxidation (CWAO), H 2 O promoted CWAO (Zhou et al, 2017), ozonation (Turhan & Uzman, 2008), NF (Naidu et al, 2016), and adsorption with activated carbon adsorbents (Roostaei & Tezel, 2004). Among them, membrane processes are the most sustainable and energy‐efficient options.…”

Facile Synthesis of rGO/Mn3O4 Composite for Efficient Photodegradation of Phenol under Visible Light

“…Thus, it is important to develop an adhesive-like material to remove the organic pollutants from water bodies to minimize pollution [11][12][13]. Many techniques have been used to remove phenol from wastewater such as photocatalytic degradation, membrane filtration, chemical oxidation, and solvent extraction [14][15][16][17][18][19][20][21]. Recently, Wang et al prepared 2D/2D γ-MnO 2 /rGO using rGO and KMnO 4 for the catalytic ozonation of 4-chlorophenol in the presence of PMS [22].…”