Removal of phenolic pollutants from wastewater streams using ionic liquids

Sas, Olalla G.; Sánchez, Pablo; González, Begoña; Domínguez, Ángeles

doi:10.1016/j.seppur.2019.116310

Cited by 59 publications

(17 citation statements)

References 31 publications

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“…As a class of protoplasmic toxicants, phenolic compounds have the characteristics of numerous sources, high toxicity, and difficult degradation [1][2][3]. Vast amounts of phenol and phenolic compounds are produced by industry, including textiles, ceramics, medicine, coking, and leather processing, and then discharged into the environment, producing lasting adverse effects.…”

Section: Introductionmentioning

confidence: 99%

Amino Acid-Based Natural Deep Eutectic Solvents for Extraction of Phenolic Compounds from Aqueous Environments

Liu

et al. 2021

Processes

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The environmental pollution of phenol-containing wastewater is an urgent problem with industrial development. Natural deep eutectic solvents provide an environmentally friendly alternation for the solvent extraction of phenol. This study synthesized a series of natural deep eutectic solvents with L-proline and decanoic acid as precursors, characterized by in situ infrared spectrometry, Fourier transform infrared spectrometry, hydrogen nuclear magnetic resonance spectrometry, and differential thermogravimetric analysis. Natural deep eutectic solvents have good thermal stability. The high-efficiency extraction of phenol from wastewater by natural deep eutectic solvents was investigated under mild conditions. The effects of natural deep eutectic solvents, phenol concentration, reaction temperature, and reaction time on phenol extraction were studied. The optimized extraction conditions of phenol with L-prolin/decanoic acid were as follows: molar ratio, 4.2:1; reaction time, 60 min; and temperature, 50 °C. Extraction efficiency was up to 62%. The number of extraction cycles can be up to 6, and extraction rate not less than 57%. The promising results demonstrate that natural deep eutectic solvents are efficient in the field of phenolic compound extraction in wastewater.

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Section: Introductionmentioning

confidence: 99%

Amino Acid-Based Natural Deep Eutectic Solvents for Extraction of Phenolic Compounds from Aqueous Environments

Liu

et al. 2021

Processes

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“…Compared with other pollutants, such as dye (Lazaridis et al, 2007), phenols (Sas et al 2020), inorganic anions, and pesticides (which are toxic to many living lifeforms and organisms), heavy metal ions are extremely harmful to human, animals, and plants because of their toxicity, accumulation, no biodegradable nature and causing various diseases and disorders (Patnaik et al, 2004). Different methodologies, including precipitation, flotation, ion exchange, membrane-related processes, electrochemical techniques and activated carbon adsorption, have been actually established for the removal of heavy metal ions from aqueous effluents (Carolin et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Human Hair Biogenic Fiber as a Biosorbent of Multiple Heavy Metals from Aqueous Solutions

Zhang

Carrillo-Navarrete

Palet-Ballús

2020

Journal of Natural Fibers

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Human hair natural fiber is mainly considered a waste in our society and its disposal can cause a major environmental impact. Hence, its valorization as a biosorbent of pollutants such as heavy metals is an interesting route to explore since it can reduce the amount of waste and at the same time contributes to the circular economy strategy. In this work, the ability of two kind of human hairs, used as biosorbents to remove Cr(III), Ni(II), Co(II), Mn(II), Cu(II), Zn(II), Cd(II) and Pb(II) ions from multiple-metal aqueous solutions, were examined and compared under different operating conditions. The influence of the time, pH and initial metal concentration on the metal uptake were studied. The biosorption kinetics and isotherm were also modeled observing that pseudo-second order kinetic model and Langmuir model fitted successfully experimental data. Moreover, biosorption process did not significantly modify the morphology and the chemical structure of the hair samples, which was proved by SEM and FT-IR studies. These kinetic results underline the satisfactory capacity of human hair for the biosorption of Pb(II), Cu(II) and Cr(II) (values up to 95%), pointing up the high efficacy of human hair for the removal of heavy metal ions from aqueous media.

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“…179 In another study, Chen et al also found that the removal of methylene blue dye from the aqueous phase is exothermic and decreases with an increase in temperature from 20 C to 45 C and is accompanied by simultaneous decrease in the distribution coefficient. 162,163 12. Phenol extraction from model oil using ILs [FA] has higher efficacy of 97.8% and a distribution coefficient of 27.59 using IL/model oil in 0.2 ratio at room temperature.…”

Section: Thermodynamics Of Phenol Extractionmentioning

confidence: 99%

“…and safety concern. 7,8 The permissible level of phenol discharge from industrial effluents should not be greater than 5 ppm. 12,13 Furthermore, even discharge to inland or water bodies with concentrations as low as 1 ppm is considered undesirable and toxic.…”

mentioning

confidence: 99%

Ionic liquids and deep eutectic solvents for the recovery of phenolic compounds: effect of ionic liquids structure and process parameters

et al. 2021

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Removal of phenolic pollutants from wastewater streams using ionic liquids

Cited by 59 publications

References 31 publications

Amino Acid-Based Natural Deep Eutectic Solvents for Extraction of Phenolic Compounds from Aqueous Environments

Amino Acid-Based Natural Deep Eutectic Solvents for Extraction of Phenolic Compounds from Aqueous Environments

Human Hair Biogenic Fiber as a Biosorbent of Multiple Heavy Metals from Aqueous Solutions

Ionic liquids and deep eutectic solvents for the recovery of phenolic compounds: effect of ionic liquids structure and process parameters

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