Removal of lead(II) from aqueous solution using heartwood of Areca catechu powder

Chakravarty, Paresh; Sarma, Neelotpal Sen; Sarma, Hari Prasad

doi:10.1016/j.desal.2010.02.029

Cited by 92 publications

(68 citation statements)

References 25 publications

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“…Beyond a certain dosage, the adsorption e ciency did not increase signi cantly. In other words, the system has reached equilibrium, indicating that the adsorption and desorption rate of phenol is equal [30]. In addition, nanoparticles have high reactivity due to its high speci c surface area, and by increasing the amount of adsorbent solution (up to 0.08 gL 1 ), the particles interact with each other instead of adsorbing pollutants and convert to hunk.…”

Section: The E Ect Of Nano-bioadsorbent Dosagementioning

confidence: 99%

Phenol Removal from Aqueous Solution by Adsorption Process: Study of The Nanoparticles Performance Prepared from Alo vera and Mesquite (Prosopis) Leaves

et al. 2017

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Abstract. This study was performed to measure the potential utilization of agro-waste to generate nanoparticles and evaluate its capability as a low-cost adsorbent for phenol removal. Adsorption studies for phenol removal using aloe vera and mesquite leaves nanoparticles were carried out under various experimental conditions including pH, nanobioadsorbent dosage, phenol concentration, contact time, temperature, and ionic strength in a batch reactor. The adsorption kinetics were applied by pseudo-rst order and pseudosecond order models and isotherm technique by Freundlich and Langmuir isotherms models. The results showed that the rate of phenol adsorption increases in both nano-bioadsorbents with an increase in pH up to 7, adsorbent dosage up to 0.08 gL 1 , phenol initial concentration up to 32 mgL 1 , contact time up to 60 min, and a raise in temperature. The adsorption data followed the Freundlich isotherm model. The kinetic studies indicated that the adsorption of phenol with nano-bioadsorbents was best described by the pseudo-second order kinetics. We found that the nanoparticles prepared from aloe vera and mesquite leaves had a high capability in adsorption of phenol, besides the point that they could be accessed at low cost. These agro-wastes can be used to remove phenol from aqueous environments.

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Section: The E Ect Of Nano-bioadsorbent Dosagementioning

confidence: 99%

Phenol Removal from Aqueous Solution by Adsorption Process: Study of The Nanoparticles Performance Prepared from Alo vera and Mesquite (Prosopis) Leaves

et al. 2017

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“…It is important to note that ultrasound assistance resulted in a wider band of C=O stretching at 1665-1760 cm -1 with a peak at 1712 cm -1 . This band is associated to carbonyls [26,36], which were the most dominant functional group in the PJS-AC, even if the transmittance decreased from 86.62% in the PJS-C and 82.07% in the PJS-ACWU to 70.56% in the PJS-AC. This indicates that ultrasound causes carbonyls to also be removed partially from the PJS-AC, and that the presence of carbonyls should let chemical adsorption take place.…”

Section: Functional Groups Of the Samplesmentioning

confidence: 99%

Cu(II) Ions Adsorption Using Activated Carbon Prepared from Pithecellobium Jiringa (Jengkol) Shells With Ultrasonic Assistance: Isotherm, Kinetic and Thermodynamic Studies

Muslim

Ellysa

Said³

2017

J. Eng. Technol. Sci.

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Abstract. Adsorption of Cu(II) ions from aqueous solution onto activated carbon (AC) prepared from Pithecellobium jiringa shell (PJS) waste was investigated by conducting batch mode adsorption experiments. The activation with ultrasound assistance removed almost all functional groups in the PJS-AC, while more cavities and pores on the PJS-AC were formed, which was confirmed by FTIR and SEM analyses. The Cu(II) ion adsorption isotherm fitted best to the Freundlich model with average R 2 at 0.941. It was also correlated to the Langmuir isotherm with average R 2 at 0.889. This indicates that physical sorption took place more than chemical sorption. The maximum Cu(II) ion adsorption capacity onto the PJS-AC for a dose of 1 g was 104.167 mg/g at 30 °C and pH 4.5, where the Langmuir constant was 0.523 L/mg, the Freundlich adsorption intensity was 0.523, and the Freundlich constant was 5.212 L/mg. Cu(II) adsorption followed the pseudo second-order kinetic (PSOKE) model with average R 2 at 0.998, maximum adsorption capacity at 96.154 mg/g, PSOKE adsorption rate constant at 0.200 g/mg.min, temperature at 30 °C and pH at 4.5. The changes in enthalpy, entropy, free energy and activation energy were determined, and the results confirmed that Cu(II) adsorption onto the PJS-AC was exothermic chemical adsorption in part. There was a decrease in the degree of freedom and the adsorption was non-spontaneous.

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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%

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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Removal of lead(II) from aqueous solution using heartwood of Areca catechu powder

Cited by 92 publications

References 25 publications

Phenol Removal from Aqueous Solution by Adsorption Process: Study of The Nanoparticles Performance Prepared from Alo vera and Mesquite (Prosopis) Leaves

Phenol Removal from Aqueous Solution by Adsorption Process: Study of The Nanoparticles Performance Prepared from Alo vera and Mesquite (Prosopis) Leaves

Cu(II) Ions Adsorption Using Activated Carbon Prepared from Pithecellobium Jiringa (Jengkol) Shells With Ultrasonic Assistance: Isotherm, Kinetic and Thermodynamic Studies

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

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