Removal of lead (II) ions from synthetic and real effluents using immobilized Pinus sylvestris sawdust: Adsorption on a fixed-bed column

Taty-Costodes, V. Christian; Fauduet, Henri; Porte, Catherine; Ho, Yuh‐Shan

doi:10.1016/j.jhazmat.2005.03.032

Cited by 223 publications

(101 citation statements)

References 16 publications

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“…This is attributed to the fact that as the flow rate becomes higher, the contact time between the adsorbate solutes and the adsorbent is minimized in time, and hence the adsorbate molecules do not have enough time to uptake the binding sites on the adsorbent surface or diffuse into the pores of the adsorbents, causing the adsorbate solutes to leave the column before equilibrium to occur and breakpoint time to be reached earlier. These results were corroborated with a number of reported findings [203][204][205].…”

Section: Effect Of Flow Ratesupporting

confidence: 92%

Low-cost Adsorbents Derived from Agricultural By-products/Wastes for Enhancing Contaminant Uptakes from Wastewater: A Review

Sulyman

Namieśnik

Gierak

2017

Pol. J. Environ. Stud.

209

112

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A major threat to the comfort of human life has been imposed by increased industrialization and urbanization. The generation and disposal of huge amounts of toxic materials and pollutants have heavily contaminated our environment. Some Organics such as synthetic dyes (SD) and heavy metals (HM) are becoming increasingly prevalent as the most dangerous pollutants in soil and surface water environments. They are causing great concern worldwide due to their toxicity to many life forms.Environmentally friendly utilization of agricultural by-products/waste materials either as raw materials or in production of so-called activated carbons (AC) is an important issue. Because it is apparent from our literature review that the main factors characterizing these materials are their affordability, local availability, and efficiencies in removing many unwanted toxics and pollutants, they therefore could be utilized instead of more conventional but expensive adsorbent materials, particularly in developing countries where many industries lack appropriate individual sewage treatment systems; even where they exist, they lack satisfactory functioning and maintenance because of the lack of good budgets.A number of case studies are supplied in this review. These case studies have pointed to the efficient removal of SD/HM ions from aqueous solutions by the agricultural by-products/wastes in the form of a raw material, signifying spent tea leaves (STL) as a good example. Besides, the efficient removal of such ions by AC produced from these agricultural by-products/wastes has also been given in detail, suggesting a variety of AC agricultural by-products/wastes sources. Both kinds are widely used adsorbents in the treatment of wastewaters. Our review has shown that these adsorbents are characterized by many exceptional physical and chemical features that make them widely used adsorbents in the treatment of wastewaters. The adsorption efficiencies by these substances were also affected by the characteristics of AC, which depend on the physical and chemical properties of the precursor (i.e., agricultural by-products/wastes) as well as on the activation method applied, which is either chemical or physical. The structural properties of the resulting

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Section: Effect Of Flow Ratesupporting

confidence: 92%

Low-cost Adsorbents Derived from Agricultural By-products/Wastes for Enhancing Contaminant Uptakes from Wastewater: A Review

Sulyman

Namieśnik

Gierak

2017

Pol. J. Environ. Stud.

209

112

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“…In the bed operated at 5mL/min, Cd breakthrough was observed after 120 minutes of contact as there was insufficient time for intra-particle diffusion of metal ions into the pores of the zeolite resulting in earlier breakthrough [46]. Hence, the lower the flow rate, the better the metal removal performance of the column [25].…”

Section: Effect Of Flow Ratementioning

confidence: 99%

“…In shorter beds, mass transfer is governed by axial dispersion resulting in decreased diffusion of metal ions [46].…”

Section: Effect Of Bed Heightmentioning

confidence: 99%

Disinfection and removal performance for Escherichia coli and heavy metals by silver-modified zeolite in a fixed bed column

Akhigbe

Ouki

Saroj

2016

Chemical Engineering Journal

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“…The breakthrough curves were obtained by plotting the normalized concentration (C t /C 0 ) (ratio of influent and effluent concentrations) versus time or volume (Aksu and Gonen 2004). The total dye adsorbed Q 0 (mg/g) in the fixed-bed column was calculated using the following equation (Taty-Castodes et al 2005):…”

Section: Column Studymentioning

confidence: 99%

Fixed-bed column study for the adsorptive removal of acid fuchsin using carbon–alumina composite pellet

Dutta

Basu

2013

Int. J. Environ. Sci. Technol.

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The carbon-alumina composite pellet was developed for the adsorption of acid fuchsin from its aqueous solution. The composite pellet was characterized using Brunauer-Emmett-Teller method, scanning Electron Microscopy and Fourier Transform Infrared Spectroscopy. The adsorption capacity of commercial alumina, commercial activated carbon and the prepared composite pellet was investigated against acid fuchsin, and the adsorption capacity was found to be increased in the order of alumina \ carbon-alumina composite pellet \ activated carbon. Although the adsorption capacity of carbon-alumina composite pellets was less than that of activated carbon, the use of the pelletized form of the present adsorbent was proven to be advantageous for the use in the packed-bed column. The experimental data were fitted to Langmuir, Freundlich and Temkin adsorption isotherms, and the equilibrium behavior was well explained by Langmuir isotherm. Besides, the kinetic behavior was well predicted by pseudo-second-order kinetics. The effects of inlet dye concentration (10-20 mg/L), feed flowrate (5-15 mL/min) and bed height (2.54-7.62 cm) on the breakthrough characteristics were investigated using a fixed-bed column. The maximum removal capacity in the column study was found to be 343.87 mg/L with an initial dye concentration and flowrate of 20 and 10 mL/min according to Bohart-Adams model. The breakthrough behavior was also effectively described by the Yoon-Nelson and Clark models.

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Removal of lead (II) ions from synthetic and real effluents using immobilized Pinus sylvestris sawdust: Adsorption on a fixed-bed column

Cited by 223 publications

References 16 publications

Low-cost Adsorbents Derived from Agricultural By-products/Wastes for Enhancing Contaminant Uptakes from Wastewater: A Review

Low-cost Adsorbents Derived from Agricultural By-products/Wastes for Enhancing Contaminant Uptakes from Wastewater: A Review

Disinfection and removal performance for Escherichia coli and heavy metals by silver-modified zeolite in a fixed bed column

Fixed-bed column study for the adsorptive removal of acid fuchsin using carbon–alumina composite pellet

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