Characteristics of activated carbons prepared from pistachio-nut shells by physical activation

Yang, Ting; Lua, Aik Chong

doi:10.1016/s0021-9797(03)00689-1

Cited by 295 publications

(147 citation statements)

References 14 publications

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“…The bands in the range of 3,200-3,650 cm -1 have been attributed to the hydrogen-bonded -OH group of alcohols and phenols (Yang and Lua, 2003). The peak around 1,635 cm -1 is due to the C=C stretching that can be attributed to the aromatic C-C bond, and the peak at 1,072 cm -1 can also be associated with either C-O symmetric or asymmetric stretching vibration (-C-O-C-ring) Khaled et al, 2009 b ).…”

Section: Characterisation Of the Adsorbentmentioning

confidence: 99%

Adsorption of remazol brilliant blue on an orange peel adsorbent

Mafra

Igarashi‐Mafra

Zuim

et al. 2013

Braz. J. Chem. Eng.

136

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-A novel orange peel adsorbent developed from an agricultural waste material was characterised and utilised for the removal of Remazol Brilliant Blue from an artificial textile-dye effluent. The adsorption thermodynamics of this dye-adsorbent pair was studied in a series of equilibrium experiments. The time to reach equilibrium was 15 h for the concentration range of 30 mg L -1 to 250 mg L -1 . The adsorption capacity decreased with increasing temperature, from 9.7 mg L -1 at 20 °C to 5.0 mg L -1 at 60 °C. Both the Langmuir and Freundlich isotherm models fitted the adsorption data quite reasonably. The thermodynamic analysis of dye adsorption onto the orange peel adsorbent indicated its endothermic and spontaneous nature. Thus, the application of orange peel adsorbent for the removal of dye from a synthetic textile effluent was successfully demonstrated.

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Section: Characterisation Of the Adsorbentmentioning

confidence: 99%

Adsorption of remazol brilliant blue on an orange peel adsorbent

Mafra

Igarashi‐Mafra

Zuim

et al. 2013

Braz. J. Chem. Eng.

136

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“…The spectra for the LAFS-AC with 0.5 M KOH activator is shown by the top graph, and the spectras for the LAFS-AC with 0.25 and 0.75 M KOH are shown by the middle graphs in Figure 1. As shown in Figure 1, There were two bands at 3851-3698 cm -1 with the peaks at 3738 and 3705 cm -1 which was signed to first functional group of the O-H stretch of hydroxyl groups [25,32,34]. As clearly shown in Figure 1 The same trend and even more contrast was shown by the second functional group of the C-H stretching of alkenes and alkanes with the weak bands at 3099-32845 cm -1 and the peaks at 3055 and 2951 cm -1 , respectively [25], [35].…”

Section: Resultsmentioning

confidence: 99%

“…The effect of intial pH in the system was not investigated. However, pH 5 (±0.15), was taken into account for the current study because the maximum Cu(II) ions adsorption capacity of activated carbon was moslty found at the pH 5 [24], [32]. The contact time, initial Cu(II) ions concentration, KOH concentration and temperature of adsorption were in the range of 0-120 min, 24.45-509.81 mg/L and 27-60 o C (± 1 o C), respectively.…”

Section: Characterization Of the Lafs-acmentioning

confidence: 99%

Adsorption of Cu(Ii) Ions in Aqueous Solution Onto Limonia Acidissima Shellbased Activated Carbon: Kinetic and Isotherm Studies

Muslim

Said

Hariati

et al. 2018

MST

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Adsorption of Cu(II) ions from aqueous solution using activated carbon prepared from Limonia acidissima fruit shell (LAFS-AC) was conducted in batch mode experiments at pH 5 (±0.15), 100 rpm and 1 atm. The effects of contact time, initial Cu(II) ions concentration, KOH concentration, and adsorption temperature on Cu(II) ions adsorption capacity were investigated. Fourier Transform Infrared Spectroscopy and Scanning Electron Microscopy analyses were performed to investigate the active site and surface morphology of the LAFS-AC, respectively. The Cu(II) ions adsorption was fitted very well (R 2 = 0.94 on average) to the pseudo second-order adsorption kinetic with the adsorption capacity and rate being 25.58 mg/g and 0.07 g/mg.min, respectively at 27 o C by the LAFS AC activated using 0. Abstract Adsorpsi Ion Cu(Ii) di dalam Larutan Berair menggunakan Karbon Aktif Berbasis Kulit BuahLimonia acidissima: Studi Kinetika dan Isotermal. Adsorpsi ion Cu(II) dari larutan berair menggunakan karbon aktif yang dibuat dari kulit buah Limonia acidissima (LAFS-AC) dilakukan pada percobaan dengan sistem batch pada pH 5 (± 0,15), 100 rpm dan 1 atm. Efek waktu kontak, konsentrasi awal ion Cu(II), konsentrasi KOH, dan suhu adsorpsi pada adsorpsi ion Cu (II) diselidiki. Analisis spektroskopi FTIR dan SEM dilakukan untuk menyelidiki morfologi bagian aktif dan permukaan LAFS-AC. Adsorpsi ion Cu(II) memiliki kemiripan (R2 rata-rata = 0,94) terhadap kinetika adsorpsi pseudo orde kedua dengan kapasitas adsorpsi dan laju masing-masing 25,58 mg/g dan 0,07 g/mg.min pada suhu 27 o C pada LAFS-AC aktif menggunakan 0,5 M KOH. Pada suhu 60 o C, nilainya menjadi 26,88 mg/g dan 0,15 g/mg.min. Adsorbsi ion Cu(II) mengikuti model adsorpsi isotherm Langmuir (LAIM) (R2 = 0,98 rata-rata). Kapasitas adsorpsi LAIM dan konstanta masing-masing bernilai 26,67 mg/g dan 0,03 L/g pada suhu 27 o C. Pada suhu 60 o C, nilainya meningkat secara dramatis menjadi 0,09 L/g. Kondisi adsorpsi optimal yang diperoleh adalah 0,5 M KOH pada LAFS-AC aktif, konsentrasi awal Cu(II) 509,81 mg/L dan waktu kontak 120 menit pada suhu 60 o C dengan kapasitas adsorpsi ion Cu(II) sebesar 26,95 mg/g.

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“…The bands around 3426 cm -1 and 1580 cm -1 were attributed to the O-H stretching in hydroxyl groups (Yang and Lua 2003) and C=C stretching vibration (Guo and Rockstraw 2007), respectively. The band at about 1370 cm -1 was assigned to the symmetrical bending of the C-H bond in the methyl group, while the bands at 864 cm -1 , 795 cm -1 , and 739 cm -1 were attributed to aromatic C-H out-of-plane bending vibrations (Yang and Lua 2003). Compared with the bands for the C-H bonds of PSC, those of ACMs were hardly discernable, indicating that the hydrogen was removed.…”

Section: Ftir Spectramentioning

confidence: 99%

Forming Active Carbon Monoliths from H3PO4-loaded Sawdust with Addition of Peanut Shell Char

Tian

Qiao

2014

BioResources

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Peanut shell char (PSC) was converted into active carbon monoliths (ACMs) by adding a binder that was easy to make. The conversion process involved adding the PSC into H3PO4-loaded sawdust, extruding the mixture, and finally heating the resulting monoliths for different times. The properties of the resulting ACMs were investigated using scanning electron microscopy, energy dispersive X-ray spectroscopy, Fourier transform infrared analysis, nitrogen adsorption-desorption, X-ray diffraction, and thermogravimetric analysis. The H3PO4-loaded sawdust could be used as a binder for converting powdered PSC into well-shaped ACMs without visual cracks. The resulting ACMs maintained their monolithic shape, even in water. The ACMs showed a much higher specific surface area (SSA, 850 to 915 m 2 /g) than the PSC (105 m 2 /g). The largest SSA (915 m 2 /g) was achieved by activation for 50 min. Increasing the activation time decreased the SSA and apparent density, but only slightly impacted the carbon structure. This research might lead to valueadded conversion of bio-chars.

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Characteristics of activated carbons prepared from pistachio-nut shells by physical activation

Cited by 295 publications

References 14 publications

Adsorption of remazol brilliant blue on an orange peel adsorbent

Adsorption of remazol brilliant blue on an orange peel adsorbent

Adsorption of Cu(Ii) Ions in Aqueous Solution Onto Limonia Acidissima Shellbased Activated Carbon: Kinetic and Isotherm Studies

Forming Active Carbon Monoliths from H3PO4-loaded Sawdust with Addition of Peanut Shell Char

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