Kinetics and equilibrium of desorption removal of copper from magnetic polymer adsorbent

Tseng, Jyi-Yeong; Chang, Ching‐Yuan; Chang, Chia‐Yi; Chen, Yi‐Hung; Chang, Chia‐Chi; Ji, Dar-Ren; Chiu, Chun-Yu; Chiang, Pen‐Chi

doi:10.1016/j.jhazmat.2009.06.030

Cited by 66 publications

(33 citation statements)

References 40 publications

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“…The applicability of zero-order and first-order kinetics than second-order kinetics indicates that for all adsorbents, the chromium ions present in the outer surface was desorbed. A similar result was obtained when copper ions were desorbed from magnetic polymer adsorbent (Tseng et al 2009). According to Elovich kinetic model, the increase in α and decrease in β value indicate an increase in desorption rate of chromium ions from the sludge amended by nanoparticles and nanobiocomposites.…”

Section: Desorption Kinetics Of the Sludgesupporting

confidence: 78%

Immobilization of Chromium in Tannery Sludge Using Iron-Based Nanoparticles and Nanobiocomposites

Arthy

Phanikumar

2015

Water Air Soil Pollut

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This paper presents the efficacy of zerovalent iron nanoparticles (ZVINs), magnetic iron oxide nanoparticles (MINs), zero-valent iron nanoparticles/ sugarcane bagasse (ZVIN-SB) composite and magnetic iron oxide nanoparticles/sugarcane bagasse (MIN-SB) composite in immobilizing chromium present in tannery sludge. The optimized values for the immobilization of chromium by the adsorbents were found to be 48 h, 100 g/kg and 7, respectively, for time, adsorbent dosage and pH. The maximum uptake capacity was found to be 429.75, 539.25, 587.25 and 625.8 mg/kg, respectively, for ZVIN, MIN, ZVIN-SB and MIN-SB. The desorption study of the unamended sludge and sludge amended by ZVIN, MIN, ZVIN-SB and MIN-SB was carried out with three different desorbing media (0.1 N HCL, DIW and 0.1 N NaOH). It was found that the cumulative concentration of leachate chromium was more in basic condition than in neutral and acidic conditions. In column studies, the concentration of leachate chromium attained 0 mg/L at 24, 15, 18 and 14 pore volumes, respectively, for the sludge amended by ZVIN, MIN, ZVIN-SB and MIN-SB. The experimental adsorption data fitted well with pseudo-first-order kinetics. The zero-order kinetics accurately predicted the experimental desorption capacity (q e ) of the sludge amended by ZVIN, MIN, ZVIN-SB and MIN-SB. The Fourier transform infrared spectroscopy (FTIR) analysis showed that the amine, carboxyl, iron compounds, etc. present in the adsorbents were the chief causes for the immobilization of chromium. The X-ray diffraction (XRD) analysis of the sludge showed the presence of trivalent chromium compounds at a higher concentration. Nomenclature q t Amount of contaminant adsorbed/desorbed from sludge at time (min) (mg/kg) C 0 Initial concentration of the chromium (mg/L) C e Final concentration of the chromium (mg/L) V Volume of the solution (L) M Mass of the adsorbent (kg) C t (mg/ L) Concentration of the contaminant in the liquid at varying contact time W Weight of the sludge (kg) R 2Correlation coefficient q e Experimental uptake capacity/desorption capacity (mg/kg) Water Air Soil Pollut (2015) 226: 204 Calculated uptake capacity/desorption capacity (mg/kg) k 1 First-order kinetic rate constant (1/min) h Initial adsorption rate (mg/kg/min) t 1/2 Half-life time (min) k 2 Rate constant of pseudo-second-order equation (kg/mg/min) α Elovich kinetic constant initial adsorption rate (mg/kg/min) β Elovich kinetic desorption constant (kg/mg) k Rate constant of the power function (mg/kg/ min) kv Power kinetic specific adsorption rate at unit time (mg/kg/min) k 0 Zero-order rate constant (mg/kg/min) k p Parabolic diffusion rate constant (kg/g/ min 0.5 )

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Section: Desorption Kinetics Of the Sludgesupporting

confidence: 78%

Immobilization of Chromium in Tannery Sludge Using Iron-Based Nanoparticles and Nanobiocomposites

Arthy

Phanikumar

2015

Water Air Soil Pollut

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“…In addition, only 7.2 % of the adsorption capacity was lost after 30 replications of the adsorption-desorption study. Tseng et al (2009) used ethylene diamine tetraacetic acid (EDTA) to examine the desorption behavior of copper ions adsorbed on the magnetic polymer adsorbent (MPA) of polyvinyl acetate-iminodiacetic acid (M-PVAC-IDA). The Cu(II) adsorbed on M-PVAC-IDA was recovered by magnetic separation.…”

Section: Review Of Literaturementioning

confidence: 99%

“…CaCl 2 used as desorbent in earlier studies was not effective for recovery of Cu(II) (Wambu et al 2009). Tseng et al (2009) reported EDTA as an effective recovery agent for recovery of Cu(II) ion. Katsou et al (2011) investigated the regeneration of clinoptilolite, contaminated with zinc and lead, using 1 M KCl and 3 M KCl, respectively.…”

Section: Use Of Acids For Regeneration and Recovery Of Heavy Metalsmentioning

confidence: 99%

Regeneration of adsorbents and recovery of heavy metals: a review

Lata

Singh

Samadder

2014

Int. J. Environ. Sci. Technol.

385

136

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In last a few decades, significant improvements were made in both efficiency and economy for removal of heavy metals and metalloid (arsenic) from water using adsorbents. But less attention was paid to recycling of used adsorbents and recovery of the heavy metals from the desorbing agents. For regeneration and reuse of adsorbents, various possible regenerating agents such as acids, alkalis and chelating agents (such as ethylene diamine tetraacetic acid) were used by many researchers with very limited success in some of the studies only up to a limited number of adsorption-desorption cycles. Only a few of the reported studies were focused on recovery of adsorbed (from saturated adsorbents) and desorbed metals (from regenerating agents). Though the management of the used adsorbent and recovery of heavy metals is one of the most important aspects, but only a limited number of research works considered the fate of spent adsorbents before disposal. This review summarizes the removal efficiency of various adsorbents, desorption efficiency of various regenerating agents and recovery of the heavy metals from both saturated adsorbents and desorbing solvents used for regeneration. The study will help the scientific community working on adsorption studies to take up research initiatives required to address the feasible recovery methods of heavy metals from the used adsorbents, to study the possible reuse of the desorbing agents and to choose a suitable desorbing/regenerating agent for a particular adsorbent.

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“…A good sorbent should be able to desorb all the absorbed analytes [12]. Figure 1 shows that the composite adsorbed all the hazardous VOCs because the obtained value of the percentage of recovery more than 100%.…”

Section: Resultsmentioning

confidence: 96%

EFFECT OF PALM OIL FIBER-TiO2 RATIO IN THE COMPOSITE ON THE REDUCTION OF BTX AND FORMALDEHYDE IN THE AIR

Manap¹,

Shamsudin

Maghpor

et al. 2016

MJAS

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The effect of palm oil fiber-TiO 2 ratio in the composite on the reduction of benzene, toluene, xylene and formaldehyde in the air is studied. The ratio was set at 1:0, 1:9 and 5:5. The combination of adsorption process by palm oil fiber and photooxidation of volatile organic compounds by titanium dioxide was revealed. The composite were prepared by using mechanical milling technique. The performance of the composite was characterized in terms of percentage of recovery of benzene, toluene and xylene (BTX) using GC/FID and formaldehyde concentration reduction using formaldehyde meter. The results of recovery of the BTX by palm oil fiber/titanium dioxide composite were more than 90%. The palm oil fiber/titanium dioxide composite has successfully reduced the concentration of formaldehyde by up to 66.7%. Therefore, the palm oil mesocarp fiber/titanium dioxide composite produced is able to reduce the concentration of volatile organic compounds.Keywords: mesocarp fiber, palm oil fiber, titanium dioxide, photocatalyst, photo oxidation, volatile organic compunds Abstrak Kesan nisbah serat kelapa sawit-titanium dioksida dalam komposit bagi pengurangan kandungan BTX dan formaldihid dalam udara telah dikaji. Nisbah telah ditetapkan sebagai 1:0, 1:9 dan 5:5. Kombinasi proses penjerapan oleh serat kelapa sawit dan proses oksidasi cahaya sebatian organik meruap oleh titanium dioksida telah dijelaskan. Serbuk komposit serat kelapa sawittitanium dioksida telah disediakan menggunakan kaedah kisaran mekanikal untuk mendapatkan serbuk komposit. Prestasi komposit telah diuji dari segi nilai peratusan ujian pemulihan benzena, toluena dan xilena (BTX) menggunakan kromatografi gas dengan pengesan pengionan api (GC/FID) dan peratusan pengurangan kepekatan formaldehid menggunakan meter formaldehid. Nilai peratusan ujian pemulihan BTX yang diberikan oleh serbuk komposit melebihi 90%. Serbuk komposit dari serat kelapa sawit dan titanium dioksida telah berjaya mengurangkan kepekatan formaldehid sebanyak 66.7%. Oleh itu, komposit yang dihasilkan dari serat kelapa sawit dan TiO 2 boleh mengurangkan kepekatan sebatian organic meruap dalam udara.

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Kinetics and equilibrium of desorption removal of copper from magnetic polymer adsorbent

Cited by 66 publications

References 40 publications

Immobilization of Chromium in Tannery Sludge Using Iron-Based Nanoparticles and Nanobiocomposites

Immobilization of Chromium in Tannery Sludge Using Iron-Based Nanoparticles and Nanobiocomposites

Regeneration of adsorbents and recovery of heavy metals: a review

EFFECT OF PALM OIL FIBER-TiO2 RATIO IN THE COMPOSITE ON THE REDUCTION OF BTX AND FORMALDEHYDE IN THE AIR

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