Application of Organically Modified Clay in Removing BTEX from Produced Water

Nasrollahpour, Sepideh; Kebria, Daryoush Yousefi; Ghavami, Mohammad; Ghasemi‐Fare, Omid

doi:10.1061/9780784482827.031

Cited by 5 publications

(2 citation statements)

References 18 publications

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“…In addition to microbial degradation, the removal of BTEX by adsorption has also been mentioned. An interesting study on the use of organophilic clay as an adsorbent compared to traditional clay demonstrated its very high efficiency (95.6%) in removing BTEX, pointing this material as an alternative in environmental applications thanks to its favorable microstructure, simplicity, and low cost [30].…”

Section: The Btex Groupmentioning

confidence: 99%

Soil Bioremediation: Overview of Technologies and Trends

et al. 2020

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Petroleum hydrocarbons, heavy metals and agricultural pesticides have mutagenic, carcinogenic, immunotoxic and teratogenic effects and cause drastic changes in soil physicochemical and microbiological characteristics, thereby representing a serious danger to health and environment. Therefore, soil pollution urgently requires the application of a series of physicochemical and biological techniques and treatments to minimize the extent of damage. Among them, bioremediation has been shown to be an alternative that can offer an economically viable way to restore polluted areas. Due to the difficulty in choosing the best bioremediation technique for each type of pollutant and the paucity of literature on soil bioremediation enhanced by the use of specific additives, we reviewed the main in situ and ex situ methods, their current properties and applications. The first section discusses the characteristics of each class of pollutants in detail, while the second section presents current bioremediation technologies and their main uses, followed by a comparative analysis showing their respective advantages and disadvantages. Finally, we address the application of surfactants and biosurfactants as well as the main trends in the bioremediation of contaminated soils.

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Section: The Btex Groupmentioning

confidence: 99%

Soil Bioremediation: Overview of Technologies and Trends

et al. 2020

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“…In addition, the adsorption approach has low operational cost, is easy to operate, and adsorbents can be easily regenerated (Edet et al, 2020;Rodrigues et al, 2013). Several adsorbents, such as polysterin resin, organoclay, natural clays and activated carbon (AC) have been used to remove BTEX compounds from water through adsorption processes (Makhathini et al, 2017;Nasrollahpour et al, 2020;Carvallo et al, 2012). Although commercial AC is popular and widely utilized owing to its high surface area, microporous structure and chemical stability, its applications have been hampered due to high cost of starting material (e.g., wood or coal).…”

Section: Introductionmentioning

confidence: 99%

Adsorptive removal of BTEX compounds from wastewater using activated carbon derived from macadamia nut shells

Melaphi

Sadare

Simate

et al. 2023

WSA

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In this study, adsorptive removal of benzene, toluene, ethylbenzene and xylenes (BTEX) from synthetic water using activated carbon adsorbent derived from macadamia nut shells was investigated. The surface functional groups of the synthesized adsorbents were assessed by Fourier transform infrared spectra. The specific surface area, pore size and pore volume at 77 K nitrogen adsorption, surface morphology, and the crystalline structure of the adsorbents were determined using Brunauer-Emmett-Teller, scanning electron microscopy and x-ray diffraction, respectively. Batch adsorption mode was used to evaluate the performance of the activated carbon. The stock solutions of synthetic wastewater were prepared by dissolving 100 mg/L of each of the BTEX compound into distilled water in a 250 mL volumetric flask. Effect of initial concentration of BTEX compounds, contact time, and mass of adsorbent on the removal of BTEX compounds from the synthetic wastewater was investigated. The macadamia nut shell–derived activated carbon (MAC) proved to be an effective adsorbent for BTEX compounds, with a large surface area of 405.56 m2/g. The exposure time to reach equilibrium for maximum removal of BTEX was observed to be 20 min. The adsorption capacity of the BTEX compounds by MAC followed the following adsorption order: benzene > toluene > ethylbenzene ˃ xylene.

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