Development of phenols recovery process with novel solvent methyl propyl ketone for extracting dihydric phenols from coal gasification wastewater

Guo, Chao; Tan, Yangtong; Yang, Siyu; Qian, Yu

doi:10.1016/j.jclepro.2018.07.161

Cited by 36 publications

(21 citation statements)

References 32 publications

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“…Different solvents (diisopropyl ether (DIPE) and methyl isobutyl ketone (MIBK)) can be used for phenol removal, depending on the type of phenols contained in the coal wastewater. Guo et al [131] assessed the removal of total phenols and hydroquinone (dihydric phenol) using three different solvents: (i) methyl propyl ketone (MPK), (ii) DIPE, and (iii) MIBK. Besides, one-stage, two-stages, and three-stages of countercurrent extraction were also performed.…”

Section: High Added-value Productsmentioning

confidence: 99%

Towards the Implementation of Circular Economy in the Wastewater Sector: Challenges and Opportunities

Guerra-Rodríguez

Oulego

Rodríguez

et al. 2020

Water

126

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The advancement of science has facilitated increase in the human lifespan, reflected in economic and population growth, which unfortunately leads to increased exploitation of resources. This situation entails not only depletion of resources, but also increases environmental pollution, mainly due to atmospheric emissions, wastewater effluents, and solid wastes. In this scenario, it is compulsory to adopt a paradigm change, as far as the consumption of resources by the population is concerned, to achieve a circular economy. The recovery and reuse of resources are key points, leading to a decrease in the consumption of raw materials, waste reduction, and improvement of energy efficiency. This is the reason why the concept of the circular economy can be applied in any industrial activity, including the wastewater treatment sector. With this in view, this review manuscript focuses on demonstrating the challenges and opportunities in applying a circular economy in the water sector. For example, reclamation and reuse of wastewater to increase water resources, by paying particular attention to the risks for human health, recovery of nutrients, or highly added-value products (e.g., metals and biomolecules among others), valorisation of sewage sludge, and/or recovery of energy. Being aware of this situation, in the European, Union 18 out of 27 countries are already reusing reclaimed wastewater at some level. Moreover, many wastewater treatment plants have reached energy self-sufficiency, producing up to 150% of their energy requirements. Unfortunately, many of the opportunities presented in this work are far from becoming a reality. Still, the first step is always to become aware of the problem and work on optimizing the solution to make it possible.

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Section: High Added-value Productsmentioning

confidence: 99%

Towards the Implementation of Circular Economy in the Wastewater Sector: Challenges and Opportunities

Guerra-Rodríguez

Oulego

Rodríguez

et al. 2020

Water

126

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“…Recently many authors have studied the LLE of various organic solvents and phenol solutions and measured related phase equilibrium data. The main solvents for extraction of phenol from water are alcohols, ketones, ,, esters, ethers, alkanes, aromatic hydrocarbons . However, these solvents have relatively high water solubility and require relatively high energy consumption in the solvent recovery stage.…”

Section: Introductionmentioning

confidence: 99%

Experimental Measurement and Thermodynamic Model of Liquid–Liquid Equilibrium for the Ternary System of 1-Dodecanol–Phenol–Water

2019

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1-Dodecanol with low solubility in water is a potential solvent to extract phenol from wastewater. The liquid–liquid equilibrium data of the ternary system (1-dodecanol–phenol–water) were measured at 298.15, 313.15, 323.15, 333.15, and 343.15 K under atmospheric pressure. The experimental data were correlated by the nonrandom two liquids (NRTL) and universal quasi-chemical (UNIQUAC) models, and the corresponding binary parameters were obtained. The results show that the two models agree well with experimental values. Comparison of the average values of the root mean squared deviation (RMSD) from both models reveals that the NRTL model is more accurate than the UNIQUAC model. The effect of temperature on the extraction process is discussed, and temperature has little effect on extraction efficiency. The van’t Hoff equation is used to correlate the relationship of distribution coefficient to temperature. The enthalpy change of the extraction process was calculated, and the result shows that extraction of phenol from water by 1-dodecanol is an exothermic process.

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“…Therefore, synergistic can be regarded as a good pathway to improve extraction efficiency. 19,20 Guo et al 21 reported that alcohol and benzene, 23 ethers, 25 ketones, 24 esters, 22 and so on have a synergistic extraction effect on phenols. Liquid−liquid equilibrium (LLE) data of the quaternary system (DIPE + n-pentanol + phenol + water) are necessary because it is rarely reported and is indispensable for separation process design.…”

Section: Introductionmentioning

confidence: 99%

“…Compared with the single-solvent DIPE, the mixed solvent has the desired extraction efficiency. Therefore, synergistic can be regarded as a good pathway to improve extraction efficiency. , Guo et al reported that alcohol and benzene, ethers, ketones, esters, and so on have a synergistic extraction effect on phenols.…”

Section: Introductionmentioning

confidence: 99%

Liquid–Liquid Equilibria for the Quaternary System: Diisopropyl Ether + n-Pentanol + Phenol + Water at 298.15 K

2020

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The synergistic extraction of phenol from aqueous solution with diisopropyl ether (DIPE) and n-pentanol was studied at 298.15 K under 101.3 kPa. The liquid−liquid equilibrium (LLE) data of the quaternary system (DIPE + n-pentanol + phenol + water) were studied using several proportions of mixed solvents, and the data of the ternary system (DIPE + phenol + water) were supplemented. Compared with single-solvent DIPE or n-pentanol, the extraction effect of the mixture (DIPE + n-pentanol) on phenol was significantly improved. The extraction efficiency was evaluated by calculating the distribution (D) and separation coefficient (S). Furthermore, the experimental LLE data were regressed with NRTL and UNIQUAC thermodynamic models to obtain the corresponding binary interaction parameters. The difference between the calculated value and the experimental value is less than 2%, calculated by relative root mean square deviation, indicating that the calculated and experimental results are in good agreement.

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Development of phenols recovery process with novel solvent methyl propyl ketone for extracting dihydric phenols from coal gasification wastewater

Cited by 36 publications

References 32 publications

Towards the Implementation of Circular Economy in the Wastewater Sector: Challenges and Opportunities

Towards the Implementation of Circular Economy in the Wastewater Sector: Challenges and Opportunities

Experimental Measurement and Thermodynamic Model of Liquid–Liquid Equilibrium for the Ternary System of 1-Dodecanol–Phenol–Water

Liquid–Liquid Equilibria for the Quaternary System: Diisopropyl Ether + n-Pentanol + Phenol + Water at 298.15 K

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