Arsenic removal by copper-impregnated natural mineral tufa part II: a kinetics and column adsorption study

Pantić, Krstimir; Bajić, Zoran; Veličković, Zlate; Nešić, Jovica; Đolić, Maja; Tomić, Nataša Z.; Marinković, Aleksandar D.

doi:10.1007/s11356-019-05547-7

Cited by 16 publications

(3 citation statements)

References 70 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In fact, increasing the bed height resulted in an increase in the contact time of arsenic (III) species with the DA laterite layers intercalated with activated carbon, which ultimately resulted in a better efficiency of the percolation process [48]. Thus, the decrease in the rate constant from 0.0023 to 0.0015 L•mg −1 •min −1 when the bed depth increased from 20 to 40 cm suggested that the adsorption kinetics slowed down as a result of the increase in the adsorbent mass [50].…”

Section: Z (Cm)mentioning

confidence: 99%

The Removal of As(III) Using a Natural Laterite Fixed-Bed Column Intercalated with Activated Carbon: Solving the Clogging Problem to Achieve Better Performance

Ouedraogo,

Bakouan,

Sakira

et al. 2024

Separations

View full text Add to dashboard Cite

Natural laterite fixed-bed columns intercalated with two types of layers (inert materials, such as fine sand and gravel, and adsorbent materials, such as activated carbon prepared from Balanites aegyptiaca (BA-AC)) were used for As(III) removal from an aqueous solution. Investigations were carried out to solve the problem of column clogging, which appears during the percolation of water through a natural laterite fixed-bed column. Experimental tests were conducted to evaluate the hydraulic conductivities of several fixed-bed column configurations and the effects of various parameters, such as the grain size, bed height, and initial As(III) concentration. The permeability data show that, among the different types of fixed-bed columns investigated, the one filled with repeating layers of laterite and activated carbon is more suitable for As(III) adsorption, in terms of performance and cost, than the others (i.e., non-intercalated laterite; non-intercalated activated carbon, repeating layers of laterite and fine sand; and repeating layers of laterite and gravel). A study was carried out to determine the most efficient column using breakthrough curves. The breakthrough increased from 15 to 85 h with an increase in the bed height from 20 to 40 cm and decreased from 247 to 32 h with an increase in the initial As(III) concentration from 0.5 to 2 mg/L. The Bohart–Adams model results show that increasing the bed height induced a decrease in the kAB and N0 values. The critical bed depths determined using the bed depth service time (BDST) model for As(III) removal were 15.23 and 7.98 cm for 1 and 20% breakthroughs, respectively. The results show that the new low-cost adsorptive porous system based on laterite layers with alternating BA-AC layers can be used for the treatment of arsenic-contaminated water.

show abstract

Section: Z (Cm)mentioning

confidence: 99%

The Removal of As(III) Using a Natural Laterite Fixed-Bed Column Intercalated with Activated Carbon: Solving the Clogging Problem to Achieve Better Performance

Ouedraogo,

Bakouan,

Sakira

et al. 2024

Separations

View full text Add to dashboard Cite

show abstract

“…There are three determinations regarding the mass transfer mechanism model: global mass transfer, external mass transfer, and internal mass transfer [ 93 ]. Determining global mass transfer, external mass transfer, and internal mass transfer prescribes an external factor of mass transport and an internal one, including kinetic mass transport globally [ 94 ]. Global mass transfer, external mass transfer, and internal mass transfer reflect three stages of the solute diffusion process onto a non-porous surface.…”

Section: Mass Transfer Mechanism Of Pharmaceutical Active Compounds T...mentioning

confidence: 99%

Modified polymer membranes for the removal of pharmaceutical active compounds in wastewater and its mechanism-A review

Ratnasari

2023

Bioengineered

View full text Add to dashboard Cite

Membrane technology can play a suitable role in removing pharmaceutical active compounds since it requires low energy and simple operation. Even though membrane technology has progressed for wastewater applications nowadays, modifying membranes to achieve the strong desired membrane performance is still needed. Thus, this study overviews a comprehensive insight into the application of modified polymer membranes to remove pharmaceutical active compounds from wastewater. Biotoxicity of pharmaceutical active compounds is first prescribed to gain deep insight into how membranes can remove pharmaceutical active compounds from wastewater. Then, the behavior of the diffusion mechanism can be concisely determined using mass transfer factor model that represented by β and B with value up to 2.004 g h mg −1 and 1.833 mg g −1 for organic compounds including pharmaceutical active compounds. The model refers to the adsorption of solute to attach onto acceptor sites of the membrane surface, external mass transport of solute materials from the bulk liquid to the membrane surface, and internal mass transfer to diffuse a solute toward acceptor sites of the membrane surface with evidenced up to 0.999. Different pharmaceutical compounds have different solubility and relates to the membrane hydrophilicity properties and mechanisms. Ultimately, challenges and future recommendations have been presented to view the future need to enhance membrane performance regarding fouling mitigation and recovering compounds. Afterwards, the discussion of this study is projected to play a critical role in advance of better-quality membrane technologies for removing pharmaceutical active compounds from wastewater in an eco-friendly strategy and without damaging the ecosystem.

show abstract

“…A two-component competitive adsorption study was performed to determine adsorption selectivity as an important parameter that defines adsorbent affinity to specific pollutants. Methodology was performed according to literature [32], where separation factor (sf), described by Eq. (S20), relative to Cu 2+ ( sf , with respect to pesticicdes, were obtained (>4).…”

Section: Tab VII the Competitive Removal Of Anions/cations Versus Pesticides Usingmentioning

confidence: 99%

Evaluation of adsorption performance and quantum chemical modeling of pesticides removal using Cell-MG hybrid adsorbent

Perendija

Veličković²,

Dražević

et al. 2021

SCI SINTER

View full text Add to dashboard Cite

Magnetite (MG) modified cellulose membrane (Cell-MG), obtained by reaction of 3-aminosilane and subsequently with diethylenetriaminepentaacetic acid dianhydride functionalized waste Cell fibers (Cell-NH2 and Cell-DTPA, respectively), and amino-modified diatomite was used for Azoxystrobin and Iprodione removal from water. Cell-MG membrane was structurally and morphologically characterized using FT-IR and FE-SEM techniques. The influences of operational parameters, i.e. pH, contact time, temperature, and the mass of adsorbent on adsorption and kinetics were studied in a batch system. The calculated capacities of 35.32 and 30.16 mg g-1 for Azoxystrobin and Iprodione, respectively, were obtained from non-linear Langmuir model fitting. Weber-Morris model fitting indicates the main contribution of intra-particle diffusion to overall mass transport resistance. Thermodynamic data indicate spontaneous and endothermic adsorption. The reusability of adsorbent and results from wastewater purification showed that Cell-MG could be used as general-purpose adsorbent. The adsorbent/adsorbate surface interaction was considered from the results obtained using density functional theory (DFT) and calculation of molecular electrostatic potential (MEP). Thus, a better understanding of the relation between the adsorption performances and contribution of non-specific and specific interactions to adsorption performances and design of novel adsorbent with improved properties was deduced

show abstract

Arsenic removal by copper-impregnated natural mineral tufa part II: a kinetics and column adsorption study

Cited by 16 publications

References 70 publications

The Removal of As(III) Using a Natural Laterite Fixed-Bed Column Intercalated with Activated Carbon: Solving the Clogging Problem to Achieve Better Performance

The Removal of As(III) Using a Natural Laterite Fixed-Bed Column Intercalated with Activated Carbon: Solving the Clogging Problem to Achieve Better Performance

Modified polymer membranes for the removal of pharmaceutical active compounds in wastewater and its mechanism-A review

Evaluation of adsorption performance and quantum chemical modeling of pesticides removal using Cell-MG hybrid adsorbent

Contact Info

Product

Resources

About