Potential of activated carbon from various sources as a low-cost adsorbent to remove heavy metals and synthetic dyes

Neolaka, Yantus A.B.; Riwu, Arsel A.P.; Aigbe, Uyiosa Osagie; Ukhurebor, Kingsley Eghonghon; Onyancha, Robert Birundu; Darmokoesoemo, Handoko; Kusuma, Heri Septya

doi:10.1016/j.rechem.2022.100711

Cited by 105 publications

(40 citation statements)

References 169 publications

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“…Due to the high cost of most of these materials, the need to study and develop low-cost adsorbent materials has increased [29]. Hence, special attention has recently been diverted toward the use of natural materials, agricultural waste and industrial waste as promising alternative adsorbents for the removal of metal ions, either in their natural form or after subjecting them to some modification [30][31][32][33][34][35][36][37][38].…”

Section: Introductionmentioning

confidence: 99%

Effective removal of Pb(II) and Cu(II) from aqueous solutions using a hybrid composite of fuller's earth, aluminum silicate and chitosan

Kandil

El‐Wakeel

2023

Polym. Bull.

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In this study, a highly effective hybrid adsorbent composite based on low-cost fuller’s earth (FE), aluminum silicate (AS) and chitosan (CS) was prepared using a facile method. The prepared composite was applied to adsorb lead (Pb2+) and copper (Cu2+) ions from aqueous solutions. Several analyses such as Fourier transform infrared spectroscopy (FTIR), Scanning electron microscopy (SEM) and X-ray diffraction (XRD) were used to characterize the composite. The adsorption efficiency of the prepared composite was investigated at different operating conditions. Moreover, the adsorption isotherm/kinetic models and adsorption thermodynamics of the composite were examined. The results showed that the pseudo-second-order kinetic model described well with the obtained data and the adsorption equilibrium can be better described by Langmuir isotherm model with maximum adsorption capacities of 305.5 and 284.2 mg/g for Pb2+ and Cu2+, respectively. The obtained data demonstrated that the prepared composite is an efficient and kinetically fast metal ion removal with high adsorption capacity and recovery efficiency. Graphical abstract

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Section: Introductionmentioning

confidence: 99%

Effective removal of Pb(II) and Cu(II) from aqueous solutions using a hybrid composite of fuller's earth, aluminum silicate and chitosan

Kandil

El‐Wakeel

2023

Polym. Bull.

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“…The most widely used methods for removing dyes from wastewater include coagulation [ 6 ], ozonation [ 7 ], chlorination [ 8 ], electrochemical processes [ 9 ], chemical precipitation [ 10 ], membrane methods [ 11 ], biological treatments [ 12 ] and adsorption [ 13 ]. The removal of MB dye from wastewater is extremely important, due to the serious environmental damage that it can cause [ 14 , 15 ]. The most common method of dye removal is adsorption as there are a large number of adsorbents available in the field.…”

Section: Introductionmentioning

confidence: 99%

“…Materials classified as natural adsorbents include clays, charcoal, zeolites, ores, and biomass [ 13 , 16 ]. These natural elements are generally inexpensive and present considerable potential for alteration, with the aim of eventually improving their adsorption abilities [ 14 ]. Every adsorbent has its own features in terms of pore structure, porosity, and the essence of its adsorbing surfaces.…”

Section: Introductionmentioning

confidence: 99%

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An Investigation of a Natural Biosorbent for Removing Methylene Blue Dye from Aqueous Solution

Alhogbi

Balawi

2023

Molecules

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T he current study reports the use of zeolite prepared from a kaolin composite via physical mixing with different ratios from fiber of palm tree (Zeo-FPT) as a sustainable solid sorbent for the removal of methylene blue (MB) dye from aqueous solutions. The prepared biosorbent was fully characterized using XRD, TGA, SEM, and FTIR. The impacts of various analytical parameters, for example, contact time, dosage, MB dye concentration, and the pH of the solution, on the dye adsorption process were determined. After a contact time of 40 min, the capacity to remove MB dye was 0.438 mg g−1 at a Zeo-FPT composition ratio of 1F:1Z. At pH 8, Zeo-FPT (1F:1Z) had a removal efficiency of 87% at a sorbent dosage of 0.5 g for a concentration of MB dye in an aqueous phase of 10 mg L−1. The experimental data were also analyzed using the kinetic and adsorption isotherm models. The retention process fitted well with the pseudo-second-order model (R2 0.998), where the Qe,calc of 0.353 mg g−1 was in acceptable agreement with the Qe,exp of 0.438 mg g−1. The data also fitted well with the Freundlich isotherm model, as indicated by the correlation coefficient value (R2 0.969). The Zeo-FPT attained a high percentage (99%) in the removal of MB dye from environmental water samples (tap water, bottled water, and well water). Thus, it can be concluded that the proposed zeolite composite with fiber of palm tree (Zeo-FPT) is a suitable, environmentally friendly, and low-cost adsorbent for removing dyes from wastewater.

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“…[ 5 ] The conventional adsorbent is activated carbon, which has a high specific surface area and is often used for physical adsorption. [ 6 ] Synthetic polymeric adsorbents mostly used for heavy metals adsorption are non‐renewable and thus may act as secondary pollutants. Hence, such synthetic polymers are not considered eco‐friendly.…”

Section: Introductionmentioning

confidence: 99%

Optimization of Porous Phosphorylated Chestnut Starch Synthesis by Response Surface Methodology and Characterization of its Properties

Wang

Tang

et al. 2023

Starch Stärke

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Porous phosphorylated chestnut starch (P-PCS) is prepared by enzymic hydrolysis of chestnut starch (CS) and phosphorylation, and the phosphorylation conditions are optimized by response surface design. The optimum reaction conditions are a compound phosphate (CP)/porous chestnut starch (P-CS) mass ratio of 2:1, reaction temperature of 146 °C, and reaction time of 159 min. The degree of phosphate substitution of P-PCS is 0.197. X-ray photoelectron spectroscopy (XPS) and Fourier transform infrared (FTIR) spectroscopy demonstrate that phosphate groups are esterified with -OH groups on P-CS. X-ray diffraction (XRD) shows that the starch crystal form changes after both enzymatic hydrolysis and phosphorylation. Scanning electron microscopy (SEM) reveals that the surface of P-CS is no longer as smooth as CS, but has different degrees of depressions and holes and P-PCS grains are fractured and cracked. P-PCS has much better light transmittance (26.4% vs. 2.6%) and Pb(II) adsorption performance (124.2 vs. 17.5 mg g −1 ) than CS, thereby providing a potential new application for chestnut starch as a natural polymer adsorbent for use in wastewater treatment.

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Potential of activated carbon from various sources as a low-cost adsorbent to remove heavy metals and synthetic dyes

Cited by 105 publications

References 169 publications

Effective removal of Pb(II) and Cu(II) from aqueous solutions using a hybrid composite of fuller's earth, aluminum silicate and chitosan

Effective removal of Pb(II) and Cu(II) from aqueous solutions using a hybrid composite of fuller's earth, aluminum silicate and chitosan

An Investigation of a Natural Biosorbent for Removing Methylene Blue Dye from Aqueous Solution

Optimization of Porous Phosphorylated Chestnut Starch Synthesis by Response Surface Methodology and Characterization of its Properties

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