Adsorption of pesticides on porous polymeric adsorbents

Kyriakopoulos, Grigorios L.; Doulia, Danae; Anagnostopoulos, E.

doi:10.1016/j.ces.2004.09.080

Cited by 107 publications

(35 citation statements)

References 18 publications

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“…brominated styrene-divinylbenzene resin, acrylic-type polymer and styrene divinyl benzene copolymer, the latter was found to be the most suited receiving phase for SPATT bags (MacKenzie et al, 2004). This type of macroreticular polymer is widely used for water treatment applications such as removal of phenolic compounds (Li et al, 2002), pesticides (Kyriakopoulos et al, 2005), salicylic acid (Otero et al, 2005) and phenylhydrazine derivatives (Zhai et al, 2003), as it offers a number of advantages over other adsorbents e.g. silica gels and alumina, such as ease of regeneration, high chemical stability and product availability for a wide range of pore sizes, densities and surface areas.…”

Section: Introductionmentioning

confidence: 99%

Field and mesocosm trials on passive sampling for the study of adsorption and desorption behaviour of lipophilic toxins with a focus on OA and DTX1

et al. 2008

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Abstract:It has been demonstrated that polymeric resins can be used as receiving phase in passive samplers designed for the detection of lipophilic marine toxins at sea and was referred to as solid phase adsorption toxin tracking (SPATT). The present study describes the uptake and desorption behaviour of the lipophilic marine toxins okadaic acid (OA) and dinophysistoxin-1 (DTX1) from Prorocentrum lima cultures by five styrene-divinylbenzene based polymeric resins Sepabeads ® SP850, Sepabeads ® SP825L, Amberlite ® XAD4, Dowex ® Optipore ® L-493 and Diaion ® HP-20. All resins accumulated OA and DTX1 from the P. lima culture with differences in adsorption rate and equilibrium rate. Following statistical evaluation, HP-20, SP850 and SP825L demonstrated similar adsorption rates. However, possibly due to its larger pore size, the HP-20 did not seem to reach equilibrium within 72 h exposure as opposed to the SP850 and SP825L. This was confirmed when the resins were immersed at sea for 1 week on the West Coast of Ireland. Furthermore, this work also presents a simple and efficient extraction method suitable to SPATT samplers exposed to artificial or natural culture media.

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Section: Introductionmentioning

confidence: 99%

Field and mesocosm trials on passive sampling for the study of adsorption and desorption behaviour of lipophilic toxins with a focus on OA and DTX1

et al. 2008

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“…Kiriakopoulos et al indicated that this phenomenon usually occur due to possible changes in the solid surface charge and ionization of the molecule groups or atoms, altering therefore the mechanisms and the extent of adsorption (Kyriakopoulosa andAnagnostopoulos 2005, Rosen 1989). At low pH the pesticide molecule possesses charged sites which could be attracted by the carbon surface.…”

Section: B) Effect Of Phmentioning

confidence: 99%

Production and characterization of granular activated carbon from activated sludge

Al-Qodah

Shawabkah

2009

Braz. J. Chem. Eng.

197

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-In this study, activated sludge was used as a precursor to prepare activated carbon using sulfuric acid as a chemical activation agent. The effect of preparation conditions on the produced activated carbon characteristics as an adsorbent was investigated. The results indicate that the produced activated carbon has a highly porous structure and a specific surface area of 580 m 2 /g. The FT-IR analysis depicts the presence of a variety of functional groups which explain its improved adsorption behavior against pesticides. The XRD analysis reveals that the produced activated carbon has low content of inorganic constituents compared with the precursor. The adsorption isotherm data were fitted to three adsorption isotherm models and found to closely fit the BET model with R 2 equal 0.948 at pH 3, indicating a multilayer of pesticide adsorption. The maximum loading capacity of the produced activated carbon was 110 mg pesticides/g adsorbent and was obtained at this pH value. This maximum loading was found experimentally to steeply decrease as the solution pH increases. The obtained results show that activated sludge is a promising low cost precursor for the production of activated carbon.

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“…Tire rubber granules were used for removing atrazine from aqueous solution (Alam et al, 2005). Porous polymeric adsorbents like Amberlite XAD-4(polystyrene-divinyl benzene copolymer) and XAD-7(non-ionic aliphatic acrylic polymer) were used for the adsorption of herbicides such as alachlor, amitrole, trifluralin and prometryn (Kyriakopoulos et al, 2005).…”

Section: Introductionmentioning

confidence: 99%

Adsorption of malathion on thermally treated egg shell material

Elwakeel¹,

Yousif

2010

Water Science and Technology

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Thermally treated egg shell materials were prepared at different temperatures. The samples were investigated by means of FT-IR and thermogravimetric analysis (TGA). The adsorption behavior of malathion on egg shell and its thermally treated samples was studied using batch method and gave uptake capacities up to 0.964 mmol/g. Adsorption kinetics as well as the adsorption isotherms were discussed. Regeneration of the loaded resin towards the successive resin was also clarified. The adsorption of malathion is maintained untill the third cycle without a significant activity loss.

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Adsorption of pesticides on porous polymeric adsorbents

Cited by 107 publications

References 18 publications

Field and mesocosm trials on passive sampling for the study of adsorption and desorption behaviour of lipophilic toxins with a focus on OA and DTX1

Field and mesocosm trials on passive sampling for the study of adsorption and desorption behaviour of lipophilic toxins with a focus on OA and DTX1

Production and characterization of granular activated carbon from activated sludge

Adsorption of malathion on thermally treated egg shell material

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