Dissolved air flotation combined to biosurfactants: a clean and efficient alternative to treat industrial oily water

Silva, Fernanda Cristina P. Rocha e; Silva, Nathália Maria Padilha da Rocha e; Luna, Juliana Moura de; Rufino, Raquel Diniz; Santos, Victória Laysna dos Anjos; Sarubbo, Leonie Asfora

doi:10.1007/s11157-018-9477-y

Cited by 53 publications

(28 citation statements)

References 52 publications

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“…The most common treatment technology for treating PORE is the biological treatments using an anaerobic or aerobic ponding process, because of its low operating cost [ 6 ]. The biological ponding process normally requires pre-treatment to remove residual oil and to minimize the concentration of the organic pollutant by dissolved air flotation (DAF) and coagulation using alum as a coagulant, respectively [ 6 , 8 , 9 ]. However, the biological treatment is a lengthy process, which requires prolonged treatment time for the degradation of organic particles [ 10 ].…”

Section: Introductionmentioning

confidence: 99%

Treatment of Palm Oil Refinery Effluent Using Tannin as a Polymeric Coagulant: Isotherm, Kinetics, and Thermodynamics Analyses

et al. 2020

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The refining of the crude palm oil (CPO) generates the palm oil refinery effluent (PORE). The presence of high contents of biochemical oxygen demand (BOD), chemical oxygen demand (COD), turbidity, and suspended solids (SS) in PORE encourages the determination of an effective treatment process to minimize the environmental pollution and preserve aquatic life. In the present study, a biodegradable natural polymer, namely tannin, was utilized as a coagulant to treat PORE. The coagulation experiment was conducted using a jar test apparatus. The tannin coagulation efficiency was evaluated based on the BOD, COD, turbidity, and SS removal from PORE by varying the tannin dose (50–300 mg/L), pH (pH 4–10), treatment time (15–90 min), and sedimentation time (15–90 min). It was found that the maximum removal of BOD, COD, turbidity, and SS was 97.62%, 88.89%, 93.01%, and 90.21%, respectively, at pH 6, a tannin dose of 200 mg/L, 60 min of coagulation time, and 60 min of sedimentation time. Analyses of isotherm models revealed that the Freundlich isotherm model was well fitted with the coagulation study. Kinetics studies show that the pseudo-second-order kinetics model was the well-fitted kinetics model for the BOD, COD, turbidity, and SS removal from PORE using tannin as a polymeric coagulant. The determination of thermodynamics parameters analyses revealed that BOD, COD, turbidity, and SS removal from PORE was spontaneous, exothermic, and chemical in nature. The finding of the present study shows that tannin as a natural polymeric coagulant would be utilized in PORE treatment to avoid toxic sludge generation.

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Section: Introductionmentioning

confidence: 99%

Treatment of Palm Oil Refinery Effluent Using Tannin as a Polymeric Coagulant: Isotherm, Kinetics, and Thermodynamics Analyses

et al. 2020

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“…Industrial plants driven by heavy oil have routine problems with leaks in different parts of the system, such as during the transport of the oil, the lubrication of motors and equipment, and mechanical failures. The oil and grease used in many industries end up encrusting machines, equipment, and floor, the clean-up of which is costly and time consuming (Almeida et al, 2016;Rocha e Silva et al, 2018. Few products on the market are capable of removing this type of oil.…”

Section: Introductionmentioning

confidence: 99%

“…The biodetergent market in Brazil is promising due to the lack of companies specialized in the production of such products. Thus, efforts toward the development of biodetergent production technologies will enable access to innovative products in a field that remains under-explored in the country (Rocha e Silva et al, 2018;Santos et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Formulation of a Biodegradable Detergent for Cleaning Oily Residues Generated during Industrial Processes

Silva

Almeida

Silva

et al. 2020

J Surfact & Detergents

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The use of toxic petroleum-based heavy oils is common in industrial processes. The cleaning of machines, equipment, and other surface covered in these oils is achieved with expensive products that are often also toxic and harmful to both the health of workers and the environment. The present paper proposes the development of a sustainable biodetergent made from plant-based materials. Tests were performed to determine the properties of the biodetergent in terms of its surfactant and emulsifying capacities, stability, toxicity, and the removal of heavy oil from glass plates and metallic surfaces. The formulation was composed of a natural solvent (cottonseed oil), a plantbased surfactant agent (saponin), and two natural stabilizers (carboxymethylcellulose and glycerine). The formulation was stable, nontoxic, and highly efficient, removing 100% of the heavy oil from glass and metallic surfaces. This solution developed in this study could be used in diverse industries with the need to clean machines and parts encrusted with oil and grease as well as the cleaning of floors covered with petroleum-based residues. A preliminary analysis of the economic feasibility of using the detergent was carried out at a Brazilian power plant. Besides the reduction in environmental impact due to the use of a nontoxic, biodegradable product as well as the reduction in health risks to workers associated with toxic cleaning products, this new product can have a considerable impact on the market as an environmentally friendly solution.

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“…The oily wastewater pollution causes several problems: (a) Affecting water sources, drinking water, etc., (b) endangering human health, (c) pollution of the atmosphere, (d) affecting agriculture production, (e) harming nature, and (f) endangering the life of living organisms [31][32][33][34][35]. After many industrial processes (such as food, ship, oil refinery, petrochemical, leather, and metal finishing), oily wastewater is produced.…”

Section: Oily Wastewatermentioning

confidence: 99%

A Review on Membrane Technology and Chemical Surface Modification for the Oily Wastewater Treatment

et al. 2020

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Cleaning of wastewater for the environment is an emerging issue for the living organism. The separation of oily wastewater, especially emulsified mixtures, is quite challenged due to a large amount of wastewater produced in daily life. In this review, the membrane technology for oily wastewater treatment is presented. In the first part, the global membrane market, the oil spill accidents and their results are discussed. In the second and third parts, the source of oily wastewater and conventional treatment methods are represented. Among all methods, membrane technology is considered the most efficient method in terms of high separation performance and easy to operation process. In the fourth part, we provide an overview of membrane technology, fouling problem, and how to improve the self-cleaning surface using functional groups for effectively treating oily wastewater. The recent development of surface-modified membranes for oily wastewater separation is investigated. It is believed that this review will promote understanding of membrane technology and the development of surface modification strategies for anti-fouling membranes.

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Dissolved air flotation combined to biosurfactants: a clean and efficient alternative to treat industrial oily water

Cited by 53 publications

References 52 publications

Treatment of Palm Oil Refinery Effluent Using Tannin as a Polymeric Coagulant: Isotherm, Kinetics, and Thermodynamics Analyses

Treatment of Palm Oil Refinery Effluent Using Tannin as a Polymeric Coagulant: Isotherm, Kinetics, and Thermodynamics Analyses

Formulation of a Biodegradable Detergent for Cleaning Oily Residues Generated during Industrial Processes

A Review on Membrane Technology and Chemical Surface Modification for the Oily Wastewater Treatment

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