Treatment of hyper‐saline wastewater loaded with phenol by the combination of adsorption and an offline bio‐regeneration system

Gu, Xiaoli; Zhang, Aili; Liu, Guangfei

doi:10.1002/jctb.1910

Cited by 4 publications

(3 citation statements)

References 47 publications

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“…Finally, at pH= 10, higher than p ka , its adsorption capacity is lower since it is completely ionized. These results are in agreement with those reported by Gu et al, 2008 andMohammad et al, 2016.The pKa values of phenol and PHBA at 30 °C are 9.89 and 4.8, respectively (Hameed and Rahman 2008;Li et al . 2009).…”

Section: Effect Of Solution Phsupporting

confidence: 92%

Effect of Salinity and PH on the Industrial Effluent Treatment by Activated Carbon: Modeling of the Kinetic Adsorption and Equilibrium Isotherms

Mohamed¹,

Awad²,

Andriantsiferana³

et al. 2019

EMSD

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In recent years, interest has been focused on the removal of phenols from contaminated by using a variety of purification techniques. Adsorption of bio-industrial effluent on commercial activated carbon S23 was investigated at ambient conditions. In this wok, phenol and p-hydroxyl benzoic acid (PHBA) was studied as an example of the organic compounds present in the industrial effluent. The effect of temperature, pH, and the presence of inorganic salt NaCl on the pollutants adsorption were studied to give further comprehension of the optimal conditions of the organic compounds adsorption onto activated carbon. It was noted that the increase in temperature resulted in a decrease in phenols adsorption capacity by S23. Lower phenol adsorption was also observed at the solution pH 2 and 10, whereas, favourable adsorption was reached at neutral solution pH, and the coexisting inorganic salt NaCl exerts slightly positive effect on the adsorption process. The isotherms obtained at pH 2.2 and 3.5 (non-buffered solution) are very similar and showed a higher adsorption capacity compared with that obtained at pH 7 and 10 for PHBA which is more adsorbable than phenol. The kinetic of the adsorption processes can be better represented by the pseudo-second order. The results showed also that the total organic carbon (TOC) of the industrial effluent reduced for about 20 %. Freundlich, Langmuir and Jovanovic adsorption models were used for mathematical description of adsorption equilibrium of phenols. The results showed that the experimental data fitted very well to the Freundlich and Jovanovic models.

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Section: Effect Of Solution Phsupporting

confidence: 92%

Effect of Salinity and PH on the Industrial Effluent Treatment by Activated Carbon: Modeling of the Kinetic Adsorption and Equilibrium Isotherms

Mohamed¹,

Awad²,

Andriantsiferana³

et al. 2019

EMSD

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“…Besides, the conventional methods of wastewater treatment, such as coagulation and flocculation, sedimentation and floatation, membrane filtration, ozonation, oxidation, precipitation, and disinfection, are either expensive or not very effective. These technologies mostly transform pollutants from one phase to another and do not completely eliminate them [8]. Even though membrane filtration produces high quality water, it has a major limitation in membrane fouling thus adding to the operating cost [9].…”

Section: Introductionmentioning

confidence: 99%

Development of Composite Adsorbent Coating Based Acrylic Polymer/Bentonite for Methylene Blue Removal

Azha

Hamid

Ismail

2017

J. Eng. Technol. Sci.

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Abstract. The development of composite adsorbent coating based acrylic polymer solution (APS) mixed with bentonite (ben) was investigated. The composite adsorbent coating was prepared and coated to a high surface area substrate, cotton cellulosic fiber (CCF). The APS/ben-CCF was used for a single cationic methylene blue (MB) dye adsorption system. Characterization of composition and structure of materials and coating was carried out by X-ray fluorescence (XRF), scanning electron microscopy (SEM), and UV-spectroscopy (UV-VIS). The adsorption properties of the APS/ben-CCF were investigated as a function of solution pH, initial dye concentration and contact time as well as solution temperature of MB dye. The result revealed that the APS/ben-CCF functioned well in solutions of various pH (acidic to alkaline), achieving 100% removal of MB within 2 hours of adsorption for 50 ppm. Kinetic studies showed that APS/ben-CCF is endothermic in nature since the adsorption capacity increased with increasing solution temperature. These results demonstrate that APS/ben-CCF composite adsorbent coating is an advanced adsorbent with advantages such as easy phase separation and capability to remove cationic dyes in a short time period.

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“…These technologies mostly transform pollutants from one phase to another and do not completely eliminate them [4].…”

Section: Introductionmentioning

confidence: 99%

Adsorption Isotherms and Thermodynamic Data for Removal Pesticides from Aqueous Solution on Pomegranate Peel Surface

Fairooz¹

2015

AJAC

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This work includes the study of the ability of pomegranate peel as adsorbent for two kinds of pesticides (Lambda cyhalothrin and Diazinon) from their aqueous solutions. The equilibrium contact time for the samples was determined. The effect of some factors on the adsorption process which was represented by the effect of acidity function was also studied. It was found that the best adsorption is at pH=2. The effects of the different temperatures within the range (313, 323, and 333K) were studied. The amount of adsorption for the pesticides is decreased with the increase of temperature; this indicates that the adsorption process is exothermic. Finally the study of the adsorption isotherms takes the (S-shape) according to Gile's classification for all the cases from (S2, S4) type which is following the freundlich equation for the adsorption.

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Treatment of hyper‐saline wastewater loaded with phenol by the combination of adsorption and an offline bio‐regeneration system

Cited by 4 publications

References 47 publications

Effect of Salinity and PH on the Industrial Effluent Treatment by Activated Carbon: Modeling of the Kinetic Adsorption and Equilibrium Isotherms

Effect of Salinity and PH on the Industrial Effluent Treatment by Activated Carbon: Modeling of the Kinetic Adsorption and Equilibrium Isotherms

Development of Composite Adsorbent Coating Based Acrylic Polymer/Bentonite for Methylene Blue Removal

Adsorption Isotherms and Thermodynamic Data for Removal Pesticides from Aqueous Solution on Pomegranate Peel Surface

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