Utilizing eco-friendly kaolinite-biochar composite adsorbent for removal of ivermectin in aqueous media

Olu-Owolabi, Bamidele I.; Diagboya, Paul N.; Mtunzi, Fanyana M.; Düring, Rolf‐Alexander

doi:10.1016/j.jenvman.2020.111619

Cited by 43 publications

(37 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The negative Δ G ° values indicated a spontaneous process, while the value of Δ S ° for ivermectin adsorption on SBA-15-NH 2 is positive, suggesting increased randomness of the molecules in solution as the system moved toward equilibrium. Comparison of the adsorption capacity data (536.2 μg/g) obtained from this study with those found in the literature for kaolinite-Carica papaya (105.3 μg/g) and kaolinite-pine cone (115.8 μg/g) composite adsorbents showed that SBA-15-NH 2 outperformed both composites. Finally, ivermectin adsorption from low concentration solutions (<100 μg/L) at different temperatures (Figure b) showed that the SBA-15-NH 2 adsorbent could lower the concentrations in solution to about 1 μg/L.…”

Section: Resultssupporting

confidence: 68%

Empirical Assessment and Reusability of an Eco-Friendly Amine-Functionalized SBA-15 Adsorbent for Aqueous Ivermectin

Diagboya

Mtunzi

Düring

et al. 2021

Ind. Eng. Chem. Res.

Self Cite

View full text Add to dashboard Cite

Ivermectin has efficacious broad-spectrum action against several human and veterinary endo-/ectoparasites. However, it is an emerging contaminant in water, causing serious concern to environmental health experts because of its toxicity/adverse ecological effects and increasing input. Currently, conventional water treatment methods are not designed to effectively eliminate it. Hence, amine moiety-grafted SBA-15 (SBA-15-NH 2 ) was prepared, characterized, and evaluated for ivermectin adsorption from water as well as its reusability. Ivermectin adsorption data were analyzed with pseudo-first order, pseudo-second order, and intraparticle diffusion kinetic models, in addition to Langmuir and Freundlich adsorption isotherm models and the thermodynamics parameters evaluated. Characterization data revealed that the SBA-15 mesoporous structure was intact in SBA-15−NH 2 with reduced surface areas and pore sizes. The SBA−15 characteristic hydroxyl group infrared broad band disappeared with the appearance of stronger amide−I band upon functionalization. In addition, SBA−15-NH 2 has ≈22% less thermal stability than the SBA−15, while both materials exhibited intense X-ray diffraction peaks typical of well-organized pore structures with no significant distortion after functionalization. Ivermectin adsorption was rapid, and equilibrium was reached within 180 min. The pseudo-second order kinetic model fit the data better than the pseudo-first order one, suggesting electrostatic interaction as a removal mechanism, while the intraparticle diffusion model indicated that ≈80% ivermectin uptake occurred on the external surfaces. The process was pH-and concentration-dependent and exhibited higher adsorption at extreme pH conditions (pH values ≈3 and 11) and higher concentrations. The SBA−15-NH 2 adsorption capacity is 536.2 μg/g at 30 °C, while the concentration left in solution could be as low as 1 μg/L. Adsorption isotherm models revealed that the process involves multiple reaction phenomena including monolayer, heterogeneous, and multilayer adsorption simultaneously. Adsorption was spontaneous but exothermic, and thus, it decreased at high ambient temperature. The SBA-15-NH 2 adsorbent exhibited potential for reusability with about 15% loss in efficiency after 3 cycles of adsorption and desorption.

show abstract

Section: Resultssupporting

confidence: 68%

Empirical Assessment and Reusability of an Eco-Friendly Amine-Functionalized SBA-15 Adsorbent for Aqueous Ivermectin

Diagboya

Mtunzi

Düring

et al. 2021

Ind. Eng. Chem. Res.

Self Cite

View full text Add to dashboard Cite

show abstract

“…Though the FPSO model overestimated the quantities of contaminants adsorbed ( q e ), their better fitness parameters are strong indications that the data may be sufficiently described by this model, which suggests that the adsorption process of both contaminants on mPSBA involves more complex interactions than electrostatic interactions. It has been suggested that part of these complex interactions could include those between (a) the negatively charged OH – and COO – functional groups of the G-5 PAMAM and the Cd(II) ions, and (b) oxygen-containing As(III) species and the amine groups of the G-5 PAMAM, which could result in hydrogen bonding and/or electrostatic interactions, as well as pore-filling/contaminant trapping within pores because the composite is composed of a mesoporous SBA-15 component and π–π and weak van der Waals interactions. ,,, …”

Section: Resultsmentioning

confidence: 99%

“…It has been suggested that part of these complex interactions could include those between (a) the negatively charged OH − and COO − functional groups of the G-5 PAMAM and the Cd(II) ions, and (b) oxygen-containing As(III) species and the amine groups of the G-5 PAMAM, which could result in hydrogen bonding and/or electrostatic interactions, as well as pore-filling/contaminant trapping within pores because the composite is composed of a mesoporous SBA-15 component and π−π and weak van der Waals interactions. 25,30,35,36 The IPD parameters in Table 3 show that both elements rate data had relatively good fits to this model. The parameter C (mg/g) which is an expression of the degree of surface adsorption suggested that ≈67% and 81% of Cd(II) and As(III) adsorption on mPSBA, respectively, were surface adsorption, while the rest occurred within the mesopores of the composite.…”

mentioning

confidence: 86%

Metals and Antibiotics as Aqueous Sequestration Targets for Magnetic Polyamidoamine-Grafted SBA-15

et al. 2021

Self Cite

View full text Add to dashboard Cite

In this study, a magnetic generation-5 polyamidoamine (G-5 PAMAM) dendrimer-functionalized SBA-15 (mPSBA) composite was synthesized by coupling amine-functionalized silica (SBA-15-NH 2 ) and amine-functionalized magnetic nanoparticles (MNP-NH 2 ) with the G-5 PAMAM, before characterization and aqueous sorption of As(III), Cd(II), tetracycline, and ciprofloxacin using the composite. The mPSBA characterization data exhibited the typical Si−O−Si infrared peaks from the SBA-15 backbone in addition to the acquired characteristic infrared Fe−O and amide-I/II peaks from the MNP and G-5 PAMAM dendrimers, respectively. Postsorption infrared spectra showing shifts for the amide-linked groups indicated the likely points of contaminant attachment on the composite. Its thermal stability was lower than that of SBA-15 but higher than that of SBA-15-NH, while the XRD diffractograms of the backbone SBA-15-NH and MNP were unchanged in the final composite. The mPSBA composite was a better As(III) and Cd(II) adsorbent than SBA-15 by ≈400 and 140%, respectively, with rapid uptake in the first 60 min and equilibrium achieved at 120 min. Sorption was enhanced with increasing pH (until pHpzc) and initial contaminant concentration. The process was spontaneous and endothermic; thus, increasing ambient temperature enhanced Cd(II) sorption. The sorption data fitted better to the homogeneous fractal pseudo-second-order (FPSO) kinetics model and the Brouers−Sotolongo fractal adsorption isotherm models, indicating complex sorption interactions and pore-filling/contaminant trapping within mPSBA. Further experiments using mPSBA for the uptake of tetracycline and ciprofloxacin showed 679% and 325% higher sorption, respectively, compared with that for SBA-15-NH. In addition to the added advantage of easy removal from solution/treated water after the adsorption process, mPSBA sorption capacities for these studied contaminants [As(III): 23.3 mg/g; Cd(II): 74.5 mg/g; tetracycline: 38.4 mg/g; ciprofloxacin: 23.0 mg/g] are better than those of several advanced adsorbents reported in the literature.

show abstract

“…Biochar are carbon-abundant materials, produced under high and low temperature in the absence of oxygen by the pyrolysis process (Bhuvaneshwari et al, 2019). Renewable biomasses have been widely researched as a raw material for obtaining biochar (Borba et al, 2019;Dong et al, 2020;Gwenzi et al, 2020;Pozo et al, 2021;Patra et al, 2021;Olu-Owolabi et al, 2021) and as a filter for pollutants.…”

Section: Introductionmentioning

confidence: 99%

Use of low-cost adsorbent derived from the brazilian cerrado biome to remove pollutants in effluent

Brito

Arruda

Fagnani

et al. 2021

RSD

View full text Add to dashboard Cite

The biochar of the Pequi peel represents a sustainable alternative in the process of treating effluents through adsorption system. This study investigates the adsorption capacity in a fixed bed column of the activated biochar from pequi peel (ABPP) to remove the components. The biochar was obtained by pyrolysis, which was activated with zinc Chloride - ZnCl₂. Through the Thomas model, it was found that the concentration of Paracetamol of 5 mg L-1 obtained 3.21 mg g-1 of drug adsorption, which was higher than the adsorption obtained with the concentrations of 10 mg L-1 (3.02 mg g-1) and 20 mg L1 (1.22 mg g-1). Methylene blue was tested with a concentration of 3 mg L-1, adsorbing 8.07 mg g-1. The data fit the Thomas model with an R² higher than 0.90. The capacity of ABPP to adsorb methylene blue and Paracetamol was satisfactory, with adsorbing significant.

show abstract

Utilizing eco-friendly kaolinite-biochar composite adsorbent for removal of ivermectin in aqueous media

Cited by 43 publications

References 37 publications

Empirical Assessment and Reusability of an Eco-Friendly Amine-Functionalized SBA-15 Adsorbent for Aqueous Ivermectin

Empirical Assessment and Reusability of an Eco-Friendly Amine-Functionalized SBA-15 Adsorbent for Aqueous Ivermectin

Metals and Antibiotics as Aqueous Sequestration Targets for Magnetic Polyamidoamine-Grafted SBA-15

Use of low-cost adsorbent derived from the brazilian cerrado biome to remove pollutants in effluent

Contact Info

Product

Resources

About