Removal of heavy metals from binary and multicomponent adsorption systems using various adsorbents – a systematic review

Bayuo, Jonas; Rwiza, Mwemezi J.; Mtei, Kelvin

doi:10.1039/d3ra01660a

Cited by 37 publications

(18 citation statements)

References 200 publications

(189 reference statements)

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“…If q m i x q normalo > 1, it suggests a synergism effect, and if q m i x q normalo = 1, indicating noninteraction. If q m i x q normalo < 1, it suggests to the antagonism effect . The adsorption capacity of adsorbents against the target ions in a single component system and in a multi component system has been shown in Figure A,B.…”

Section: Resultsmentioning

confidence: 99%

“…< 1, it suggests to the antagonism effect. 52 The adsorption capacity of adsorbents against the target ions in a single component system and in a multi component system has been shown in Figure 15A,B. The optimum conditions for this study were pH = 6, adsorbent dose of 0.01 g, and initial metal concentration of 10 mg/g in 50 mL of water at 298 K. The data show that adsorption capacity of alkali metal K + and alkaline earth metal ions Ca + was poor compared to the selected HM ions.…”

Section: Influence Of Coexisting Ionsmentioning

confidence: 99%

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Synthesis of Plant-Mediated Iron Oxide Nanoparticles and Optimization of Chemically Modified Activated Carbon Adsorbents for Removal of As, Pb, and Cd Ions from Wastewater

Rehman,

Naeem,

Ahmad

et al. 2023

ACS Omega

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This research study was designed with the aim to prepare plant extract-mediated iron oxide nanoparticles (IONPs) and different chemically modified carbon adsorbents from the Parthenium hysterophorus plant and then optimize the carbon adsorbents by evaluating their adsorption applications in wastewater for the selected metal ions like arsenic (As 3+ ), lead (Pb 2+ ), and cadmium (Cd 2+ ). The Fourier transform infrared spectroscopy (FTIR) technique was used to highlight functional groups in plant-mediated IONPs and chemically modified carbon adsorbents. A scanning electron microscopy study was conducted to explain the surface morphology of the adsorbents. Energy-dispersive X-rays was used for elemental analysis and X-ray diffraction for particle size and crystallinity of the adsorbents. From the study, it was found that the best optimum conditions were pH = 5−6, initial concentration of adsorbate of 10 mg/L, dose of adsorbent of 0.01 g, contact time of 90−120 min of adsorbent and adsorbate, and temperature of 25 °C. At optimum conditions, the adsorption capacities of IONPs for arsenic (As) 144.7 mg/g, lead (Pb) 128.01 mg/g, and cadmium (Cd) ions 122.1 mg/g were recorded. The activated carbon at optimum conditions showed adsorption capacities of 46.35 mg/g for As, 121.95 mg/g for Pb, and 113.25 mg/g for Cd ion. At equilibrium, Langmuir, Freundlich Temkin, and Dubinin−Radushkevich isotherms were applied on the experimental adsorption data having the best R 2 values (0.973−0.999) by the Langmuir isotherm. High-correlation coefficient R 2 values (0.996−0.999) were obtained from the pseudo-second-order for all cases, showing that the adsorption process proceeds through pseudo second-order kinetics. The apparent adsorption energy E value was in the range of 0.24−2.36 kJ/mol. The adsorption capacity of regenerated IONPs for As gradually decreased from 144.8 to 45.67 mg/g, for lead 128.15 to 41.65 mg/g, and cadmium from 122.10 to 31.20 mg/g in 5 consecutive cycles. The study showed that the synthesized IONPs and acid-activated carbon adsorbent were successfully used to remove selected metal ions from wastewater.

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Section: Resultsmentioning

confidence: 99%

Section: Influence Of Coexisting Ionsmentioning

confidence: 99%

Synthesis of Plant-Mediated Iron Oxide Nanoparticles and Optimization of Chemically Modified Activated Carbon Adsorbents for Removal of As, Pb, and Cd Ions from Wastewater

Rehman,

Naeem,

Ahmad

et al. 2023

ACS Omega

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“…Adsorbent materials reported in the literature for heavy metal removal from water are becoming countless. Examples are clinoptilolite [11], polymer immobilized biomass [2,12], biochar [13], plant waste [14,15], bentonite [16], zeolite [5], activated carbon [4,17], activated sludge [18] and microbes [19], to mention a few. This research endeavors to contribute to the field of heavy metal removal through adsorption by employing Stat-Ease 360, a powerful statistical software tool widely recognized for its effectiveness in the design and analysis of experiments.…”

Section: Introductionmentioning

confidence: 99%

Untitled

2024

J. Mater. Eng.

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Heavy metal removal using adsorbent materials like watermelon rind, as investigated herein, will ensure a safe drinking water for consumption. For the first time, mathematical models taking A = adsorbent dosage, B = contact time and C = initial concentration as input variables were developed using Stat-Ease 360 design of experiment (DOE) tool for adsorption capacity (R1) and percent removal of heavy metals including, arsenic, cadmium, chromium, copper and lead (R2) in water, as two sole output variables. The models generated based on existing experimental observations (A, B, C) can be used to predict the responses or outputs of the adsorption process, especially looking at their respective satisfactory statistical performance parameters obtained. Several 3D surface and contour plots reveal the optimal factor combination for peak response performance for a particular metallic contaminant in the water. Optimal values for arsenic removal are 0.1g A, 120 min B, 3.12 mg/g R1 and 100% R2. Those of other metals present are as follows: 0.1g A, 60 min B, 0.17 mg/L C, 144.75 mg/g R1 and 85.78% R2 for cadmium; 0.1-1.2g A, 0

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“…A review of the multicomponent adsorption of heavy metals from complex mixtures such as binary, ternary, quaternary, and quinary solutions utilizing various adsorbents is presented in. 30 The review indicates that adsorbents made from locally and naturally occurring materials such as biomass, feedstocks, and industrial and agricultural waste are effective and promising in removing heavy metals from complex water systems. Nanofiber architectures based on metal–organic frameworks (MOFs) have demonstrated excellent potential for the removal of heavy metal ions from contaminated water.…”

Section: Introductionmentioning

confidence: 99%

Heavy metal pollution in the aquatic environment: efficient and low-cost removal approaches to eliminate their toxicity: a review

et al. 2023

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Removal of heavy metals from binary and multicomponent adsorption systems using various adsorbents – a systematic review

Abstract: The review revealed that both natural and engineered adsorbents could remove heavy metals from multicomponent systems. However, the competitive effects among heavy metal ions in the multicomponent system influences their individual uptake capacity.

Cited by 37 publications

References 200 publications

Synthesis of Plant-Mediated Iron Oxide Nanoparticles and Optimization of Chemically Modified Activated Carbon Adsorbents for Removal of As, Pb, and Cd Ions from Wastewater

Synthesis of Plant-Mediated Iron Oxide Nanoparticles and Optimization of Chemically Modified Activated Carbon Adsorbents for Removal of As, Pb, and Cd Ions from Wastewater

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Heavy metal pollution in the aquatic environment: efficient and low-cost removal approaches to eliminate their toxicity: a review

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