Adsorption of heavy metal ions via apple waste low-cost adsorbent: Characterization and performance

Gomravi, Yasin; Karimi, Asadollah; Azimi, Hamidreza

doi:10.1007/s11814-021-0802-8

Cited by 20 publications

(6 citation statements)

References 31 publications

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“…The short and wide peak observed at a wavelength of 2873,94 cm -1 and 2980,02 cm -1 contributes to strecthing -C-H dari alkanes (-CH3). The sharp and wide peak exposed at 1465,90 cm -1 indicates to C-C stretching vibrations [13]. In 1037,70 cm -1 wavenumber, C-O stretch vibration is found in this peak [14].…”

Section: Figure 3 Ftir From Activated Carbon Spfsmentioning

confidence: 92%

Study of adsorption isotherms on removal of Cu (II) solution using activated carbon of sugar palm fruit shell (Arenga pinnata)

Yulia,

Husin,

Zaki

et al. 2024

IOP Conf. Ser.: Earth Environ. Sci.

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Sugar palm fruit shells (SPFS) are abundant agricultural waste in Indonesia especially in Aceh. It can be converted into activated carbon for heavy metal adsorption. This objective of this work is to study the maximum capacity of activated carbon derived from SPFS for copper ions adsorption. The sample size of 100 mesh was activated physically via heating at a temperature of 600 °C for 2 hours. The Cu (II) metal ions of 30, 70, 100, 150, 200, 250, 300 ppm were prepared for the process. The prepared adsorbent was tested by adding a certain amount of copper sulphate concentration, 1 gr of adsorbent, and a contact time of 90 minutes. Fourier Transform Infrared Spectroscopy (FTIR) and Scanning Electron Microscopy (SEM-EDX) used in this work. The copper ions were calculated using Atomic Absorption Spectrophotometer (AAS). Both isotherm Langmuir and Freundlich models were utilized in this process. The Freundlich adsorption isotherm was found to be the fittest model isotherm with the adsorption capacitity of Cu(II) of 4,66 mg/g, mg/g, n = 1.02 with R2 = 0,97,9713. The activated carbon from sugar palm fruit shell has the potency being used for removal of copper contaminants.

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Section: Figure 3 Ftir From Activated Carbon Spfsmentioning

confidence: 92%

Study of adsorption isotherms on removal of Cu (II) solution using activated carbon of sugar palm fruit shell (Arenga pinnata)

Yulia,

Husin,

Zaki

et al. 2024

IOP Conf. Ser.: Earth Environ. Sci.

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“…Adsorption experiments were carried out by adding 0.01 g of binary nanocomposite (CS-TiO 2 ) into a 200 mL beaker containing 100 mL of 10 mg/L Cr ions at 25℃. Investigated variables included of pH (3)(4)(5)(6)(7)(8)(9)(10)(11)(12) , contact time (10-100 min) , effect of nanocomposite (10-50 mg) , initial concentration of Cr (VI) ( 10-1000 mg/L) and temperature (25-45℃) were investigated. The adsorption capacity was investigated and calculated by the following equations (1) :…”

Section: Adsorption-desorption Process In a Batch Systemmentioning

confidence: 99%

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mentioning

confidence: 99%

Synthesis of Chitosan-TiO<sub>2</sub> Nanocomposite for Efficient Cr(VI) Removal from Contaminated Wastewater Sorption Kinetics, Thermodynamics and Mechanism

et al. 2023

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materials have been studied to remove the deadly heavy metals from wastewaters, which is one of the promising sustainable mitigation methods 6) . Chromium ions and other heavy metals were removed using a variety of methods, such as adsorption 7,8) , membrane filtering 9) , advanced oxidation 10) , and precipitation 11,12) . Due to its low cost and economy, adsorption is a suitable method for reducing the level of Cr ions. Its effectiveness is dependent on the number of sites that can be combined with adsorbate ions 13) . Nanocomposites produced by the photolysis technique 14−22) are viable options for the adsorption of certain heavy metals from water 23−25) due to their higher specific area and porosity. Heavy metal reduction or removal from water can be accomplished using chitosan-based nanoparticles as an effective catalyst (adsorbate) 26,27) . Chitosan nanosheets have recently been suggested for use in several wastewater treatment processes 28) . Additionally, chitosan s matrix was doped with or mixed with inorganic nanoparticles like TiO 2 and ferrite. For instance, TiO 2 was integrated into CS nanosheets to absorb heavy ions from wastewater.

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“…The adsorption experiments were performed in batches, stirring at 200 rpm and 25 • C for 24 h. The suspension was filtered to remove the sorbent, and the residual concentration of Au(III) in the filtrate was measured by using an inductively coupled plasma atomic emission spectrometer (ICP-AES, Vista Pro, Varian, Palo Alto, USA). The Au(III) adsorption capacity (Qe) of thiol-MS was calculated by using Equation (3) [27,34]:…”

Section: Au(iii) Recovery Performancementioning

confidence: 99%

“…Figure 6 shows the TGA profiles of MS synthesized by using varying NaOH concentrations and the MSWI ash slag. It is well-known that both physically bound or hydrogen-bonded water and silanol groups exist on the surface of silica, but are anchored with distinct bonds [33,34]. Therefore, according to previous reports, silica undergoes dehydration of surface water differently at 120 and 800 • C. Interestingly, the silanol concentration increased with increasing NaOH concentration until 3 M, being the highest in MS-3M (see Table 2), whereupon it decreased in the MS-4M sample.…”

Section: Characterization Of the Synthesized Mesoporous Silica: Effect Of Naoh Concentrationsmentioning

confidence: 99%

Mesoporous Silica Derived from Municipal Solid Waste Incinerator (MSWI) Ash Slag: Synthesis, Characterization and Use as Supports for Au(III) Recovery

Han

Kim

et al. 2021

Materials

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In this study, the effect of NaOH on the synthesis of mesoporous silica (MS) by using municipal solid-waste incinerator (MSWI) ash slag was investigated. Moreover, the prepared MS was used as a support to evaluate its potential for the recovery of gold ions (Au(III)) from aqueous solution. The extraction process for the MSWI ash slag activated through mechanical grinding entailed alkali treatment, using varying concentrations of NaOH. The content of Si extracted from MSWI ash slag increased with the increasing grinding time and NaOH concentration. As the NaOH concentration increased, the pore structure (e.g., Brunauer–Emmett–Teller (BET) surface area and pore volume) of the synthesized MS improved. In addition, the amount of adsorbed Au(III) increased with increasing sulfur content immobilized on the support, and the sulfur content was in turn governed by the silanol content of the MS support. The adsorbent prepared by using the MS-3M support exhibited the highest Au(III) adsorption capacity (110.3 mg/g), and its adsorption–desorption efficiency was not significantly affected even after five adsorption–desorption cycles.

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Adsorption of heavy metal ions via apple waste low-cost adsorbent: Characterization and performance

Cited by 20 publications

References 31 publications

Study of adsorption isotherms on removal of Cu (II) solution using activated carbon of sugar palm fruit shell (Arenga pinnata)

Study of adsorption isotherms on removal of Cu (II) solution using activated carbon of sugar palm fruit shell (Arenga pinnata)

Synthesis of Chitosan-TiO<sub>2</sub> Nanocomposite for Efficient Cr(VI) Removal from Contaminated Wastewater Sorption Kinetics, Thermodynamics and Mechanism

Mesoporous Silica Derived from Municipal Solid Waste Incinerator (MSWI) Ash Slag: Synthesis, Characterization and Use as Supports for Au(III) Recovery

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