Surfactants for ground water remediation

Harwell, Jeffrey H.; Sabatini, David A.; Knox, Robert C.

doi:10.1016/s0927-7757(98)00785-7

Cited by 101 publications

(70 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Surfactants can be introduced into the environment by wastewater discharge, point-charge pollution [13], deliberate action, e.g. to remediate draft IAP 2006; 3/6/2018 4 contaminants from soil or from ground water [14,15] and natural secretion from aquatic plants [16]. Wastewater treatment may remove some of the surfactants, yet detectable levels persist [17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Binding of cationic surfactants to humic substances

Ishiguro

Tan

Koopal

2007

Colloids and Surfaces A: Physicochemical and Engineering Aspect

View full text Add to dashboard Cite

Commercial surfactants are introduced into the environment either through waste products or site-specific contamination. The amphiphilic nature of both surfactants and humic substances (HS) leads to their mutual attraction especially when surfactant and HS are oppositely charged.Binding of the cationic surfactants dodecyl-pyridinium chloride (DPC) and cetyl-or hexadecyl- binding to HS is due both to electrostatic and hydrophobic attraction and that the fate of HS in aqueous environmental systems can be strongly affected by cationic surfactants.

show abstract

Section: Introductionmentioning

confidence: 99%

Binding of cationic surfactants to humic substances

Ishiguro

Tan

Koopal

2007

Colloids and Surfaces A: Physicochemical and Engineering Aspect

View full text Add to dashboard Cite

show abstract

“…Petroleum hydrocarbons may exist in the vadose and saturated zones as a free liquid or ganglia of residual hydrocarbon (3,7). Even if the free liquid hydrocarbon can be removed, substantial amounts of residual hydrocarbon remain entrapped by capillary forces and represent a long-term source of contamination (7).…”

Section: Introductionmentioning

confidence: 99%

Development of Biosurfactant-Mediated Oil Recovery in Model Porous Systems and Computer Simulations of Biosurfactant-Mediated Oil Recovery

McInerney¹,

Maudgalya²,

Knapp³

et al. 2004

View full text Add to dashboard Cite

Executive summaryCurrent technology recovers only one-third to one-half of the oil that is originally present in an oil reservoir. Entrapment of petroleum hydrocarbons by capillary forces is a major factor that limits oil recovery (1,3,4). Hydrocarbon displacement can occur if interfacial tension (IFT) between the hydrocarbon and aqueous phases is reduced by several orders of magnitude. Microbially-produced biosurfactants may be an economical method to recover residual hydrocarbons since they are effective at low concentrations.Previously, we showed that substantial mobilization of residual hydrocarbon from a model porous system occurs at biosurfactant concentrations made naturally by B. mojavensis strain JF-1 if a polymer and 2,3-butanediol were present (2). In this report, we include data on oil recovery from Berea sandstone experiments along with our previous data from sand pack columns in order to relate biosurfactant concentration to the fraction of oil recovered. We also investigate the effect that the JF-2 biosurfactant has on interfacial tension (IFT). The presence of a co-surfactant, 2,3-butanediol, was shown to 2.

show abstract

“…These surfactants are resistant to bio-degradation by bacteria and have a toxic effect upon breakdown [3]. Synthetic surfactants also do not biodegrade sufficiently in the treatment plant, even when they are left for a long time [4]. Hence, the amount of surfactants must be reduced to an acceptable level before being discharged into the body of water.…”

Section: -2506mentioning

confidence: 99%

Preparation of Date Seed Activation for Surfactant Recovery

Jamion¹,

Haziqah²,

Huda³

et al. 2017

MJAS

View full text Add to dashboard Cite

Surfactants also known as surface-active agents are one of the water pollutants that can lead to the deterioration of the environment. In this study, activated carbon was prepared from date seeds (DAC) by using phosphoric acid as an activating agent. The activation process was carried out at 500 °C for two hours. DAC was characterized by Fourier-Transformed Infrared Spectrometer (FTIR), Field Emission Scanning Electron Microscopy (FESEM), Energy-Dispersive X-Ray Spectroscopy (EDX) and Nitrogen Adsorption at 77 K. The BET surface area of DAC was 1187 m 2 /g. The adsorption capacities of surfactants (CTAB and TX-100) were determined. This study showed that the adsorption capacity of CTAB (23.0724 mg/g) onto DAC was greater than TX-100 (11.3868 mg/g). The adsorption process between both surfactants onto DAC was done by physisorption through electrostatic forces. Thus, this study showed that the date seeds have a greater tendency to be microporous activated carbon and an adsorbent for surfactants recovery.Keywords: activated carbon, phosphoric acid, date seed Abstrak Bahan aktif permukaan juga dikenali sebagai surfaktan adalah salah satu bahan pencemar air yang boleh membawa kepada kemerosotan alam sekitar. Dalam kajian ini, karbon teraktif telah disediakan daripada biji kurma (DAC) dengan menggunakan asid fosforik sebagai ejen pengaktifan. Proses pengaktifan telah dilakukan pada suhu 500 °C selama dua jam. Karbon teraktif (DAC) telah dicirikan oleh Spektroskopi Inframerah Transformasi Fourier (FTIR), Mikroskopi Medan Pancaran Imbasan Elektron (FESEM), Sebaran Tenaga Sinar-X (EDX) dan penjerapan gas nitrogen pada suhu 77 K. Luas permukaan BET kawasan DAC adalah 1187 m 2 /g. Kapasiti penjerapan surfaktan (CTAB dan TX-100) telah dikaji. Kajian ini menunjukkan bahawa kapasiti penjerapan CTAB (23.0724 mg/g) pada DAC adalah lebih tinggi daripada TX-100 (11.3868 mg/g). Proses penjerapan antara bagi kedua-dua surfaktan DAC adalah secara penjerapan fizikal melalui daya elektrostatik. Oleh itu, kajian ini menunjukkan bahawa biji kurma mempunyai kecenderungan yang lebih besar sebagai karbon teraktif berliang mikro dan bahan penjerap yang baik untuk pemulihan surfaktan.

show abstract

Surfactants for ground water remediation

Cited by 101 publications

References 17 publications

Binding of cationic surfactants to humic substances

Binding of cationic surfactants to humic substances

Development of Biosurfactant-Mediated Oil Recovery in Model Porous Systems and Computer Simulations of Biosurfactant-Mediated Oil Recovery

Preparation of Date Seed Activation for Surfactant Recovery

Contact Info

Product

Resources

About