Comparison of adsorption equilibrium and kinetics of four chlorinated organics from water onto GAC

Sotelo, J.L.; Ovejero, Gabriel; Delgado, José A.; Martínez, Igor

doi:10.1016/s0043-1354(01)00261-5

Cited by 92 publications

(41 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…It is noted from Figure 3 that except Salmonella sp on horizon H X , adsorbed cell number increase swiftly at lower equilibrium planktonic cell concentrations. Adsorption isotherm of Salmonella sp on horizon H X would express a relatively less complexity of systems [24], and would depend according to Sotelo et al [39] on the lower difference in interactions energies among equilibriums.…”

Section: Resultsmentioning

confidence: 99%

Sorption Kinetics of Escherichia coli and Salmonella sp on Two Soil Layers Associated with a Groundwater Table in Yaounde, Cameroon (Central Africa)

Nola

Njiné

Boutin

et al. 2005

IJERPH

View full text Add to dashboard Cite

show abstract

Section: Resultsmentioning

confidence: 99%

Sorption Kinetics of Escherichia coli and Salmonella sp on Two Soil Layers Associated with a Groundwater Table in Yaounde, Cameroon (Central Africa)

Nola

Njiné

Boutin

et al. 2005

IJERPH

View full text Add to dashboard Cite

show abstract

“…The performances of activated carbon adsorption for aromatic compounds in aqueous solutions have been studied and applied in emergency response [19][20][21][22]. Powdered activated carbon (PAC) adsorption is one of the best technologies available for organic pollution emergency treatment as it can adsorb many kinds of organic compounds [16].…”

Section: Introductionmentioning

confidence: 99%

The influence of chlorinated aromatics’ structure on their adsorption characteristics on activated carbon to tackle chemical spills in drinking water source

Lin

Zhang

et al. 2015

Front. Environ. Sci. Eng.

View full text Add to dashboard Cite

This study focused on evaluating the efficiency of powdered activated carbon (PAC) adsorption process and tackling chlorobenzenes and chlorophenols spill in drinking water source. The adsorption kinetics and PAC's capacities for five chlorobenzenes and three chlorophenols at drinking water contamination levels were studied in order to determine the influence of different functional groups on the adsorption behavior. The results showed that PAC adsorption could be used as an effective emergency drinking water treatment process to remove these compounds. The adsorption kinetics took 30 min to achieve nearly equilibrium and could be described by both pseudo first-order and pseudo second-order models. A mathematic relationship was developed between the pseudo first-order adsorption rate constant, k 1 , and the solutes' properties including lgK ow , polarizability and molecular weight. The Freundlich isotherm equation could well describe the adsorption equilibrium behaviors of chlorinated aromatics with r 2 from 0.920 to 0.999. The H-bond donor/acceptor group, hydrophobicity, solubility and molecular volume were identified as important solute properties that affect the PAC adsorption capacity. These results could assist water professionals in removing chlorinated aromatics during emergency drinking water treatment.

show abstract

“…The pure AC carbon structure is non-polar and accordingly, ACs have shown high adsorption capacity for many types of non-polar or slightly polar organic compounds, including phenolic compounds (Liu et al 3 2010), pesticides, PCBs (Sotelo et al 2002), phthalates (Venkata Mohan et al 2007), and PAHs (Valderrama et al 2008). The hydrophilicity of ACs can be increased by the presence of polar surface functional groups, and the surface chemistry can be modified to enhance selectivity of specific chemicals.…”

Section: Introductionmentioning

confidence: 99%

Adsorption of organic stormwater pollutants onto activated carbon from sewage sludge

Björklund

2017

Journal of Environmental Management

127

View full text Add to dashboard Cite

Adsorption filters have the potential to retain suspended pollutants physically, as well as attracting and chemically attaching dissolved compounds onto the adsorbent. This study investigated the adsorption of eight hydrophobic organic compounds (HOCs) frequently detected in stormwater -including four polycyclic aromatic hydrocarbons (PAHs), two phthalates and two alkylphenols -onto activated carbon produced from domestic sewage sludge. Adsorption was studied using batch tests. Kinetic studies indicated that bulk adsorption of HOCs occurred within 10 min. Sludge-based activated carbon was as efficient as tested commercial carbons for adsorbing HOCs; adsorption capacities ranged from 70 to 2800 µg/g (Cinitial=10-300 µg/L; 15 mg SBAC in 150 mL solution; 24 h contact time) for each HOC. In the batch tests, the adsorption capacity was generally negatively correlated to the compounds' hydrophobicity (log Kow) and positively associated with decreasing molecule size, suggesting that molecular sieving limited adsorption. However, in repeated adsorption tests, where competition between HOCs was more likely to occur, adsorbed pollutant loads exhibited strong positive correlation with log Kow. Sewage sludge as a carbon source for activated carbon has great potential as a sustainable alternative for sludge waste management practices and production of a high-capacity adsorption material.

show abstract

Comparison of adsorption equilibrium and kinetics of four chlorinated organics from water onto GAC

Cited by 92 publications

References 12 publications

Sorption Kinetics of Escherichia coli and Salmonella sp on Two Soil Layers Associated with a Groundwater Table in Yaounde, Cameroon (Central Africa)

Sorption Kinetics of Escherichia coli and Salmonella sp on Two Soil Layers Associated with a Groundwater Table in Yaounde, Cameroon (Central Africa)

The influence of chlorinated aromatics’ structure on their adsorption characteristics on activated carbon to tackle chemical spills in drinking water source

Adsorption of organic stormwater pollutants onto activated carbon from sewage sludge

Contact Info

Product

Resources

About