Removal of surfactants by powdered activated carbon and microfiltration

Basar, Canan Akbil; Karagündüz, Ahmet; Çakıcı, Avni; Keskinler, Bülent

doi:10.1016/j.watres.2004.02.001

Cited by 106 publications

(56 citation statements)

References 11 publications

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“…One of the major drawbacks of the MEUF process is thus the production of surfactant-rich effluent, which needs to be treated before discharge to the environment, as this may otherwise cause secondary pollution. Adsorption technology is commonly used for the removal of surfactants [8] as well for the removal of trace heavy metals from an aqueous solution. Commonly used media for adsorption processes are powdered activated carbon (PAC), granular activated carbon (GAC) and activated carbon fiber (ACF).…”

Section: Introductionmentioning

confidence: 99%

Micellar Enhanced Ultrafiltration (MEUF) and Activated Carbon Fiber (ACF) Hybrid Processes for the Removal of Cadmium from an Aqueous Solution

Rafique¹,

Lee²

2014

Korean Chemical Engineering Research

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− Micellar enhanced ultrafiltration (MEUF) was used to remove cadmium from an aqueous solution using sodium dodecyl sulfate (SDS) as a surfactant. Operational parameters such as initial permeate flux, retentate pressure, initial cadmium concentration, pH solution, molecular weight cut-off (MWCO), and molar ratio of cadmium to SDS were investigated. Removal efficiency of cadmium from an aqueous solution increased with an increase of retentate pressure, pH solution and molar ratio of cadmium to SDS, and decreased with an increase of initial permeate flux. Higher removal efficiency of cadmium from the aqueous solution was achieved using lower MWCO (smaller membrane pore size). Under optimized experimental condition, cadmium removal efficiency reached 74.6 % within an hour. Using MEUF-ACF hybrid process the removal efficiency of both cadmium and SDS was found to be over 90%.

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Section: Introductionmentioning

confidence: 99%

Micellar Enhanced Ultrafiltration (MEUF) and Activated Carbon Fiber (ACF) Hybrid Processes for the Removal of Cadmium from an Aqueous Solution

Rafique¹,

Lee²

2014

Korean Chemical Engineering Research

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“…AOS is a mixture of 765% alkene sulfonate and 35% 3-hydroxyalkane sulfonate (or 4-hydroxyalkane sulfonate). The critical micelle concentrations (CMC) are respectively 2 mM (Basar et al, 2004) and 8 mM (Abed et al, 2004) for LAS and AOS. All adsorbents listed in Table 1 were commercially obtained, except for the LDH, which is synthesized on laboratory scale.…”

Section: Methodsmentioning

confidence: 99%

Selection and evaluation of adsorbents for the removal of anionic surfactants from laundry rinsing water

Schouten

Ham

Euverink³

et al. 2007

Water Research

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“…Activated carbon is a common solid sorbent used to remove odorous compounds (e.g. vanillin, methylnaphthalenes, 2-pyrrolidone, 2-methylisoborneol) [13], explosive compounds such as 1,3,5-trinitro-1,3,5-triazacyclohexane (RDX) and 1,3,5,7-tetranitro-1,3,5,7-tetrazocane (HMX) [11], arsenic [14] and quaternary ammonium surfactants [15] [16] from impacted water and wastewater at treatment plants. Additionally, activated carbon was recently used in-situ to treat aquatic sediments containing hydrophobic organic compounds [17] [18].…”

Section: Introductionmentioning

confidence: 99%

Activated Carbon and Clay Minerals for the Sorptive Removal of Denatonium Ions from Denatonium Benzoate Solutions

Crosson¹,

Crosson²,

Thorpe³

et al. 2014

JWARP

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This study assessed the feasibility of utilizing activated carbon and clay minerals for treating water impacted with the bittering agent denatonium benzoate (DB). Our specific study objectives were to 1) evaluate denatonium ion sorption to smectite clay minerals (bentonite and hectorite) and activated carbon (powdered and granular) at constant pH and ionic strength and 2) examine the impact of pH on denatonium ion sorption to each solid material. The experimental results indicated that high doses (33,000 mg/L) of as-received granular activated carbon and as-received clay minerals completely removed denatonium from aqueous solutions containing 100 -1000 mg/L denatonium benzoate. Powdered activated carbon at doses of 5 -100 mg/L exhibited favorable monolayer sorption of denatonium ions from a pH 6.95, 70 mg/L aqueous denatonium benzoate solution with a Langmuir separation factor (r) of 0.481, a maximum sorption capacity (Sm) of 74 mg/g, and a Langmuir constant of 15.3 L/g. A maximum removal of 23% of denatonium was achieved at the highest powdered activated carbon dosage employed. Denatonium ion removal with peroxide treated bentonite and peroxide treated hectorite did not result in complete removal of the ion and exhibited favorable sorption as evidenced by Freundlich 1/n values ranging from 0.803 to 1.194; Freundlich constants (Kf) ranged from 8 ng/L to 575 ng/L. Denatonium ion sorption to peroxide treated bentonite appeared to depend on pH while hectorite sorption of denatonium ions was independent of hydrogen ion concentrations. For powdered activated carbon adsorption, as pH increased denatonium ion sorption decreased. Overall, the work demonstrates that denatonium can be effectively removed from water via activated carbon or clay mineral sorption.

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Removal of surfactants by powdered activated carbon and microfiltration

Cited by 106 publications

References 11 publications

Micellar Enhanced Ultrafiltration (MEUF) and Activated Carbon Fiber (ACF) Hybrid Processes for the Removal of Cadmium from an Aqueous Solution

Micellar Enhanced Ultrafiltration (MEUF) and Activated Carbon Fiber (ACF) Hybrid Processes for the Removal of Cadmium from an Aqueous Solution

Selection and evaluation of adsorbents for the removal of anionic surfactants from laundry rinsing water

Activated Carbon and Clay Minerals for the Sorptive Removal of Denatonium Ions from Denatonium Benzoate Solutions

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