Removal of Effluent from Petrochemical Wastewater by Adsorption Using Organoclay

Cavalcanti, Jorge Vinícius Fernandes Lima; Abreu, César Augusto Moraes de; Carvalho, Mário de Faria; Sobrinho, Mauricio Alves Motta; Benachour, Mohand; Baraúna, Osmar S.

doi:10.5772/37200

Cited by 7 publications

(8 citation statements)

References 30 publications

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“…They are mainly composed of layers (sheet-like structures) and are therefore referred to as phyllosilicate minerals. Organically modified clays are proposed as a good option for removal of oil from produced water [2][3][4]18]. Some studies have showed that replacing the inorganic exchange cations of clay minerals with organic cations can result in greatly enhanced capacity of the materials to remove organic contaminants [2,18].…”

Section: Adsorptionmentioning

confidence: 99%

“…Hydrocarbons are present as "free oil" (hydrocarbons that separate from wastewater and float to the liquid surface) and as "emulsified oil" (hydrocarbons that remaining stable suspension and do not separate from the wastewater). The emulsified wastewater undergoes incomplete microbial degradation [1] when discharged without treatment, and not only degrades water quality but is also toxic to human and marine life and environment [2]. Therefore the removal of hydrocarbon from oil-water emulsion has a great importance for the environment [3,4].…”

Section: Introductionmentioning

confidence: 99%

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Modified Activated Carbon and Bentonite Used to Adsorb Petroleum Hydrocarbons Emulsified in Aqueous Solution

Emam¹

2013

AJEP

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Adsorption is one commonly used technique for treatment of petroleum contaminated water. This study aims to modify the adsorption surface of bentonite clay and activated carbon as organoclay and acid modified activated carbon, respectively. The modified and unmodified adsorbents were characterized by analysis of specific surface area, cation exchange capacity and point of zero charge (pH pzc). Furthermore, adsorbents efficiencies were evaluated in the adsorption of petroleum hydrocarbon from oil-water emulsion. The synthetic wastewater samples were generated by emulsifying diesel oil in distilled water to investigate the effects of: (i) contact time, (ii) initial hydrocarbon concentration, (iii) pH, and (iv) adsorption isotherm. The modification of bentonite and activated carbon produced higher adsorption capacity than the unmodified adsorbents. In addition, the results showed that the adsorption of hydrocarbon depend strongly on pH and increased with increasing contact time and the equilibrium was reached after 3 and 4 hr with clays and activated carbons, respectively. The hydrocarbon removal efficiency achieved in the following order: organic bentonite > acid modified activated carbon > bentonite > activated carbon. The modified bentonite is an excellent alternative in the adsorption of hydrocarbon from oil-water emulsion removal with the highest adsorption capacity (48 mg/g at 2 g/L). Freundlich isotherm was best to describe the adsorption isotherm of hydrocarbons from oil-water emulsion by the all adsorbents.

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Section: Adsorptionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Modified Activated Carbon and Bentonite Used to Adsorb Petroleum Hydrocarbons Emulsified in Aqueous Solution

Emam¹

2013

AJEP

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“…Advantages of adsorption were low cost, simplicity, and adaptability (Kulkarni & Goswami, 2013. A recent work by Cavalcanti et al (2012) reviewed investigations on adsorption by organoclay for removal of effluent from the petroleum wastewater. They observed that organophilic clays were effective as adsorbents for the removal of organic substances with high toxicity, such as phenols and BTEX compounds.…”

Section: Adsorptionmentioning

confidence: 99%

Treatment of petroleum wastewater by conventional and new technologies A review

2017

Global NEST Journal

109

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The objective of this study is to summarize studies and investigations and show a brief details of different technologies used for the treatment of petroleum wastewater. The wastewater from Petroleum industries and refineries mainly contains oil, organic matter and other compounds. The treatment of this wastewater can be carried out by physical, chemical and biological treatment processes. Treatment of petroleum wastewater has two stages, firstly, pre-treatment stage to reduce grease, oil and suspended materials. Secondly, an advanced treatment stage to degrade and decrease the pollutants to acceptable discharge values. Most studies are focused on degradation of some pollutants found in the petroleum wastewater such as organic materials, phenols, sulphides and ammonia.

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“…The production stages of a petroleum industry, such as extraction and refining, are potentially responsible for generating large volumes of effluent to be discarded in the environment [1][2][3]. The waste generated in oil refineries contains many different chemical compositions, depending on the complexity of the refinery, the existing processes and the type of oil used [1,4].…”

Section: Introductionmentioning

confidence: 99%

“…The waste generated in oil refineries contains many different chemical compositions, depending on the complexity of the refinery, the existing processes and the type of oil used [1,4].…”

Section: Introductionmentioning

confidence: 99%

Petrochemical wastewater treatment by electro-Fenton process using aluminum and iron electrodes: Statistical comparison

Davarnejad

Mohammadi

Ismail

2014

Journal of Water Process Engineering

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Removal of Effluent from Petrochemical Wastewater by Adsorption Using Organoclay

Cited by 7 publications

References 30 publications

Modified Activated Carbon and Bentonite Used to Adsorb Petroleum Hydrocarbons Emulsified in Aqueous Solution

Modified Activated Carbon and Bentonite Used to Adsorb Petroleum Hydrocarbons Emulsified in Aqueous Solution

Treatment of petroleum wastewater by conventional and new technologies A review

Petrochemical wastewater treatment by electro-Fenton process using aluminum and iron electrodes: Statistical comparison

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