Kinetics adsorption of heavy oil spills in rivers on magnetite-(CTAB-montmorillonite) adsorbent

Siregar, Sri Hilma; Wijaya, Karna; Kunarti, Eko Sri; Syoufian, Akhmad; Suyanta, Suyanta

doi:10.1088/1757-899x/509/1/012136

Cited by 4 publications

(2 citation statements)

References 30 publications

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“…The pseudo‐first and second‐order order rate laws, Equations () and (), were used for modeling the chemical reaction and mass transfer, respectively (Tohamy, 2023):

\log [qe - qt] = \ln qe - \frac{k}{2.303} t

\frac{t}{italicqt} = \frac{1}{italickqe} + \frac{t}{italicqe}

where qe and qt are the adsorbed total content of paraffin oil (g/g) at equilibrium and at time t , respectively, and k (min −1 ) is the adsorption rate constant (Eweida et al, 2022; Siregar et al, 2019; Tohamy, 2023; Tohamy, El‐Sakhawy & Kamel, 2022c, 2022d; Tohamy, Fathy, et al, 2023). From Equations (9) and (10) when plotting

\log [qe - qt]

against t and

\frac{t}{italicqt}

against t for pseudo‐first and second orders, respectively, should offer a straight line with the most appropriate value of the calculated equilibrium adsorption capacities ( q calc. )…”

Section: Methodsmentioning

confidence: 99%

Oil dispersing and adsorption by carboxymethyl cellulose–oxalate nanofibrils/nanocrystals and their kinetics

Tohamy

2023

J Surfact & Detergents

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The aim of our work is the preparation of cellulose nanofibrils or nanocrystals made from cellulose that is recovered from sugarcane bagasse agricultural waste (SC) as a dispersant instead of commercial cellulose for oil spill cleanup. In the current study, carboxymethyl cellulose was prepared by cellulose mercerization, which was then esterified by oxalic acid to create nanocellulose. Incorporation of oxalate into carboxymethyl cellulose (CMC) was verified by 1H‐NMR spectroscopy by the appearance of a new peak at 8.15 ppm for CMC–oxalate. The degree of substitution (DS) of oxalate was 0.17. The synthesized nanocellulose formed particles were roughly the same size and shape as both cellulose nanofibrils (CNFs) and cellulose nanocrystals (CNCs): measuring 321–480 nm in length and 4–5 nm in width. Emulsions of paraffins made from CMC–oxalate are stable up to 10 months without undergoing precipitation. CMC–oxalate had great thermal stability and worked well as a paraffin oil dispersant. CMC–oxalate provided a barrier around the oil droplet surface, which prevented droplets from coalescing. This hypothesis is supported by the contact angle measurement for the O/W emulsion formed by CMC–oxalate being 0°, which is lower than the value for emulsions formed by underivatized CMC, 37.20°. From transmission electron microscopy observations, O/W emulsions of paraffin oil were spherical in shape, and separated from each other by a distance of 30–100 nm. This study shows that CMC–oxalate can be prepared by a low‐cost method, yielding nanocellulose with characteristics that resemble CNFs and CNCs, thereby opening up new potential applications for cellulose nanomaterials.

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“…The pseudo‐first and second‐order order rate laws, Equations () and (), were used for modeling the chemical reaction and mass transfer, respectively (Tohamy, 2023):

\log [qe - qt] = \ln qe - \frac{k}{2.303} t

\frac{t}{italicqt} = \frac{1}{italickqe} + \frac{t}{italicqe}

\log [qe - qt]

against t and

\frac{t}{italicqt}

against t for pseudo‐first and second orders, respectively, should offer a straight line with the most appropriate value of the calculated equilibrium adsorption capacities ( q calc. )…”

Section: Methodsmentioning

confidence: 99%

Oil dispersing and adsorption by carboxymethyl cellulose–oxalate nanofibrils/nanocrystals and their kinetics

Tohamy

2023

J Surfact & Detergents

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“…In recent years, scientists have proved through experiments that Fe 3 O 4 particles can be used as a heavy oil adsorbent and catalyst compared with other nanoparticles, which can reduce the viscosity of heavy oil more effectively [14][15][16][17][18][19][20][21]. For example, a molecular sieve supported Fe 3 O 4 catalyst was synthesized by microwave means.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Fe3O4 Nanoparticle-Assisted Microwave Enhancing Heavy Oil

Dang

Wang³

et al. 2022

Geofluids

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Nanoparticle-assisted microwave heating of heavy oil has the advantages of fast temperature rise and high thermal efficiency. Compared with traditional heating methods, it can reduce viscosity in a shorter time. In addition, the heavy components in the heavy oil are cracked into light components at high temperatures (this high temperature cannot be reached by conventional heating methods). This process is irreversible and avoids the problem of viscosity recovery of heavy oil after the temperature is reduced. Through absorbing microwave heating experiments, study the effect of nanoparticles on the improvement of the ability of heavy oil to absorb waves and raise temperature; through the heavy oil upgrading experiment and the four-component analysis experiment, the effect of adding hydrogen donor to assist microwave on the viscosity reduction of heavy oil upgrading by nanoparticles was studied, and the problem of viscosity recovery was determined; Through the gravity drainage experiment, the mechanism of nanoparticle-assisted microwave to improve the recovery of heavy oil is studied, and the influence of water content, nanocatalyst, and microwave power on the production of drainage is analyzed. The results show that nanoparticles can improve the wave absorption and heating capacity of heavy oil, and adding 0.6 wt% of nanomagnetic iron oxide catalyst can increase the heating rate of heavy oil in microwave by 60.6%; nanoparticle-assisted microwave heating method can effectively upgrade heavy oil and reduce viscosity. The experimental conditions are 2 wt% tetralin mass concentration, 0.5 wt% nano-Fe3O4 particle mass concentration, microwave heating time 50-60 min, and microwave power 539 W. Under this experimental condition, the viscosity is reduced by 40%. This method has viscosity recovery problems, but final viscosity reduction effect is still very significant. Obtaining the mechanism of nanoparticle-assisted microwave to enhance oil recovery, one of which is that nanoparticles improve the wave absorption and heating capacity of heavy oil and increase the heating speed of heavy oil; the second is that the nanoparticles form local high temperature under the action of microwave, which catalyzes the hydrocracking reaction between the heavy components in the heavy oil and the hydrogen donor, upgrading and reducing the viscosity of the heavy oil, and accelerating the production of heavy oil.

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Optimizing Oil Removal from Oil-Water Emulsions Using Novel Iron Oxide Magnetic Nanoparticles

Malhas,

El Achkar,

Misbah

et al. 2023

Water Air Soil Pollut

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Kinetics adsorption of heavy oil spills in rivers on magnetite-(CTAB-montmorillonite) adsorbent

Cited by 4 publications

References 30 publications

Oil dispersing and adsorption by carboxymethyl cellulose–oxalate nanofibrils/nanocrystals and their kinetics

Oil dispersing and adsorption by carboxymethyl cellulose–oxalate nanofibrils/nanocrystals and their kinetics

Experimental Study on Fe3O4 Nanoparticle-Assisted Microwave Enhancing Heavy Oil

Optimizing Oil Removal from Oil-Water Emulsions Using Novel Iron Oxide Magnetic Nanoparticles

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