Preparation of Sago Bark-Derived Magnetic Adsorbent by Impregnation and Carbonation for Lead and Copper Ions Removal

This paper presents an alternative utilisation of sago barks from the sago industry. In this study, a sago bark-derived magnetic adsorbent was developed by impregnation with ferric chloride hexahydrate (FeCl3H2O) and carbonisation method. The potential of the sago bark-derived magnetic adsorbent to remove lead ion (Pb2+) and copper ion (Cu2+) from aqueous solution was assessed in a batch system. Adsorption experiments were performed as a function of initial concentration (5.0 – 15.0 mg/L). The magnetic adsorbent displayed good ferromagnetic property which aids the separation of the adsorbent after the decontamination process. The magnetic adsorbent was characterised by Fourier Transform Infrared (FTIR) Spectroscopy and Scanning Electron Microscopy embedded with an Energy Dispersive X-ray Spectrometer (SEM-EDX). The FT-IR spectra analysis revealed the surface functional groups of the magnetic adsorbent are C−O−C, C−OH, C− H, −C−C−O, Fe-O, O-H, and C-O. The maximum monolayer adsorption capacities were discovered to be 172.414 and 12500 mg/g for lead and copper ions, respectively. The batch adsorption isotherms were analysed using Langmuir, Freundlich, Jovanovic and Temkin isotherm models. The experimental data perfectly fitted with Langmuir isotherm modelling. The results indicated that the sago bark-derived magnetic adsorbent potentially to be an alternative in replacing more high-priced adsorbents for its application in heavy metal ions removal.

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Fly Ash Coated with Magnetic Materials: Improved Adsorbent for Cu (II) Removal from Wastewater

Materials ◽

10.3390/ma14010063 ◽

2020 ◽

Vol 14 (1) ◽

pp. 63

Author(s):

Maria Harja ◽

Gabriela Buema ◽

Nicoleta Lupu ◽

Horia Chiriac ◽

Dumitru Daniel Herea ◽

...

Keyword(s):

Fly Ash ◽

Adsorption Capacity ◽

Copper Ions ◽

Synthetic Wastewater ◽

Bet Surface Area ◽

Isotherm Models ◽

Batch Adsorption ◽

Maximum Adsorption Capacity ◽

Copper Adsorption ◽

X Ray

Fly ash/magnetite material was used for the adsorption of copper ions from synthetic wastewater. The obtained material was characterized by scanning electron microscopy (SEM), energy dispersive X-ray analysis (EDAX), X-ray diffractometer (XRD), Fourier transform infrared spectroscopy (FTIR), Brunauer–Emmett–Teller (BET) surface area, and vibrating sample magnetometer (VSM). Batch adsorption experiments were employed in order to investigate the effects of adsorbent dose, initial Cu (II) concentration and contact time over adsorption efficiency. The experimental isotherms were modeled using Langmuir (four types of its linearization), Freundlich, Temkin, and Harkins–Jura isotherm models. The fits of the results are estimated according to the Langmuir isotherm, with a maximum adsorption capacity of 17.39 mg/g. The pseudo-second-order model was able to describe kinetic results. The data obtained throughout the study prove that this novel material represents a potential low-cost adsorbent for copper adsorption with improved adsorption capacity and magnetic separation capability compared with raw fly ash.

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Natural Batch Adsorption Operation to Remove Dissolved Copper (II) by Carbon Charcoal Rambutan

Journal of Physics Conference Series ◽

10.1088/1742-6596/2129/1/012010 ◽

2021 ◽

Vol 2129 (1) ◽

pp. 012010

Author(s):

B Haryanto ◽

S E Saragih ◽

R Tambun ◽

H Harahap ◽

K Manik ◽

...

Keyword(s):

Metal Ions ◽

Copper Ions ◽

Copper Ion ◽

Mesh Size ◽

Total Weight ◽

Batch Adsorption ◽

Adsorbent Surface ◽

Instrument Analysis

Abstract Carbon charcoal was made from rambutan rods and used as an adsorbent. A gram 70/100 mesh size of adsorbent was then used to adsorb 100 ml of copper ion solution with a 70 ppm concentration. In this investigation, the batch procedure was used without shaking (naturally). The charcoal carbon rambutan ability to remove the copper ion was measured by AAS. The percentage result was 48,135% or about 33,694 ppm. SEM and EDX instrument analysis have applied to confirm the presence of copper ions on the adsorbent surface. The copper ion was found at a concentration of 0.09 percent of the total weight. The carbon charcoal adsorbent in rambutan rods has the ability to purify the water contaminated by metal ions.

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Calcium PretreatedHevea brasiliensisSawdust for Copper Removal: Batch and Column Study

Journal of Chemistry ◽

10.1155/2015/495257 ◽

2015 ◽

Vol 2015 ◽

pp. 1-9

Author(s):

Swarup Biswas ◽

Umesh Mishra

Keyword(s):

Adsorption Capacity ◽

Adsorption Process ◽

Copper Ion ◽

Packed Bed ◽

Isotherm Models ◽

Batch Adsorption ◽

Maximum Adsorption Capacity ◽

Packed Bed Column ◽

Pseudo Second Order ◽

Kinetics Of

Calcium pretreatedHevea brasiliensissawdust has been used as an effective and efficient adsorbent for the removal of copper ion from the contaminated water. Batch experiment was conducted to check the effect of pH, initial concentration, contact time, and adsorbent dose. The results conclude that adsorption capacity of adsorbent was influenced by operating parameters. Maximum adsorption capacity found from the batch adsorption process was 37.74 mg/g at pH of 5.6. Various isotherm models like Langmuir, Freundlich, and Temkin were used to compare the theoretical and experimental data, whereas the pseudo-first-order, pseudo-second-order, and intraparticle diffusion models were applied to study the kinetics of the batch adsorption process. Dynamic studies were also conducted in packed-bed column using different bed depths and the maximum adsorption capacity of 34.29 was achieved. Characterizations of the adsorbent were done by Fourier transform infrared spectroscopy, scanning electron microscope, and energy dispersive X-ray spectroscopy.

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Effective Remediation of Lead Ions from Aqueous Solution by Chemically Carbonized Rubber Wood Sawdust: Equilibrium, Kinetics, and Thermodynamic Study

Journal of Chemistry ◽

10.1155/2015/842707 ◽

2015 ◽

Vol 2015 ◽

pp. 1-8 ◽

Cited By ~ 1

Author(s):

Swarup Biswas ◽

Umesh Mishra

Keyword(s):

Aqueous Solution ◽

Ph Effect ◽

Lead Ion ◽

Isotherm Models ◽

Batch Adsorption ◽

Maximum Adsorption Capacity ◽

Kinetics Of Adsorption ◽

Wood Sawdust ◽

Rubber Wood ◽

Pseudo Second Order

Rubber wood sawdust was carbonized into charcoal by chemical treatment which was used for removal of lead ion from aqueous solution. The work involves batch experiments to investigate the pH effect, initial concentration of adsorbate, contact time, and adsorbent dose. Experimental data confirmed that the adsorption capacities increased with increasing inlet concentration and bed height and decreased with increasing flow rate. Adsorption results showed a maximum adsorption capacity of 37 mg/g at 308 K. Langmuir, Freundlich, and Temkin model adsorption isotherm models were applied to analyze the process where Temkin was found as a best fitted model for present study. Simultaneously kinetics of adsorption like pseudo-first-order, pseudo-second-order, and intraparticle diffusion models were investigated. Thermodynamic parameters were used to analyze the adsorption experiment. Fourier transform infrared spectroscopy, scanning electron microscope, and energy dispersive X-ray spectroscopy confirmed the batch adsorption of lead ion onto chemically carbonized rubber wood sawdust.

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Kondisi Optimum Adsorpsi Arang Hayati dari Kulit Pisang Raja (Musa X paradisiaca L.) terhadap Logam Timbal (Pb) dan Tembaga (Cu)

Jurnal Akademika Kimia ◽

10.22487/j24775185.2018.v7.i2.10393 ◽

2018 ◽

Vol 7 (2) ◽

pp. 55

Author(s):

Iren S. A. Tanggebono ◽

Vanny M. A. Tiwow ◽

Minarni Rama Jura

Keyword(s):

Optimum Condition ◽

Copper Ions ◽

Copper Ion ◽

Lead Ion ◽

Banana Peel ◽

Optimum Time ◽

Optimum Weight ◽

The Village ◽

Central Sulawesi

This study aimed to determine the optimum condition of biocharcoal from banana peel on adsorption of lead (Pb) and copper (Cu) metals based on the variation of weights and biocharcoal contact times. Banana peel used in this research were taken from Sidondo III the village, Sigi, Central Sulawesi. To determine absorbed metals in biocharcoal banana peel was measured by a spectrophotometer spectroDirect. The results showed that the optimum weight of adsorption lead (Pb) ion was 80 mg and copper (Cu) ion was 40 mg with each percentage adsorption of 73.91% and 21.23%, respectively. The optimum time to adsorb lead and copper ions was 90 minutes with the percentage adsorption of 89.13% for lead ion and 25.86% for copper ion.

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Equilibrium, kinetic and thermodynamic studies of the uptake of copper by layered double hydroxide

Hemijska industrija ◽

10.2298/hemind150608005n ◽

2017 ◽

Vol 71 (5) ◽

pp. 429-437 ◽

Cited By ~ 1

Author(s):

Ayawei Nimibofa ◽

Ekubo Tobin ◽

Shooto David ◽

Wankasi Donbebe ◽

Dikio Dixon

Keyword(s):

Layered Double Hydroxide ◽

Metal Ion ◽

Copper Ions ◽

Metal Salt ◽

Physical Adsorption ◽

Second Order ◽

Isotherm Models ◽

Batch Adsorption ◽

Order Kinetic ◽

Double Hydroxide

This study explored the adsorption capacity of Mg/Al layered double hydroxide (LDH) for the removal of Cu2+ from aqueous solutions after synthesis and characterization. The effect of various operational parameters such as concentration, temperature and sorption time on the adsorption of Cu2+ was investigated using batch adsorption process experiments. It was found that layered double hydroxide (LDH) can be used as adsorbent for the removal of copper ions in aqueous solution containing low concentration of the metal salt. The average values of activation energy, isosteric heat of adsorption, entropy and enthalpy were 1.447, 12.9, 0.0137 and ?4.8390 kJ/mol, respectively. This shows that the adsorption of the metal ion on the adsorbent follows a physical adsorption mechanism. The kinetic results conform to pseudo-second order model (R2 = 0.9959) and second order kinetic model (R2 = 0.9952) while the adsorption characteristics of the adsorbent followed both Langmuir and Freundlich adsorption isotherm models.

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Transport of Cu2+ in Unsaturated Porous Medium with Humic Acid/Iron Oxide Nanoparticle (Fe3O4) Amendment

Water ◽

10.3390/w13020200 ◽

2021 ◽

Vol 13 (2) ◽

pp. 200

Author(s):

Shanshan Lin ◽

Mengdi Shi ◽

Qi Wang ◽

Junlin Yang ◽

Gubin Zhang ◽

...

Keyword(s):

Porous Medium ◽

Iron Oxide ◽

Humic Acid ◽

Fe3o4 Nanoparticles ◽

Underlying Mechanism ◽

Isotherm Models ◽

Iron Oxide Nanoparticle ◽

Batch Adsorption ◽

Spectra Analysis ◽

Unsaturated Porous Medium

Humic acid (HA) and iron oxide (such as Fe3O4) nanoparticles are widely distributed in soil, and their complex embedded in soil might affect the transport and fate of Cu2+ in the vadose zone, while Cu2+ is a serious threat to the underlying groundwater. In this study, we synthesized a composite of Fe3O4 nanoparticles coated with HA (HA@NPs) using as an amendment a packed sand matrix in the transport column experiments. The impacts of HA content and ion strength (IS) on Cu2+ transport in the unsaturated columns were investigated. The results showed that HA exhibited a stronger inhibition effect on Cu2+ transport, and a higher IS enhanced the mobility of Cu2+ in an unsaturated porous medium in the presence of HA@NPs. The recovery ratio (Rr) of Cu2+ breakthrough in the column decreased from 66.56% to 3.94% while the mass concentration ratio CHA/CNPs increased from 0 to 50 in the HA@NPs complex. The Rr increased by 1.64 times while the IS increased from 0 to 100 mM. Batch adsorption experiments, kinetics and isotherm models, and Fourier transform infrared (FTIR) spectra analysis were implemented to elucidate the underlying mechanism. It was found that HA embedded in the sand matrix could bind Cu2+ by forming stable chelate, while the IS-dependent Cu2+ transport could be attributed to the competitive adsorption between Na+ and Cu2+. Our study demonstrates that the physicochemical environment, as well as the presence of iron oxide nanoparticles and natural organic matter, can significantly impact Cu2+ transport in unsaturated porous medium.

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Aluminum oxyhydroxide-doped PMMA hybrids powder prepared via facile one-pot method towards copper ion removal from aqueous solution

International Nano Letters ◽

10.1007/s40089-019-00286-6 ◽

2019 ◽

Vol 9 (4) ◽

pp. 317-325 ◽

Cited By ~ 1

Author(s):

Misagh Ghamari ◽

Amin Imani ◽

James F. Williams ◽

Mahdi Ghasemifard

Keyword(s):

Removal Efficiency ◽

Contact Time ◽

Copper Ions ◽

Sol Gel ◽

Copper Ion ◽

Batch Adsorption ◽

One Pot ◽

Ion Removal ◽

Adsorption Performance ◽

Enhanced Adsorption

Abstract A novel polymethyl methacrylate/boehmite nanocomposite with remarkably enhanced adsorption performance of Cu(II) was synthesized from $${\text{Al}}({\text{NO}}_{3} )_{3} \cdot 9{\text{H}}_{2} {\text{O}}$$Al(NO3)3·9H2O using a facile sol–gel method. The effects of boehmite content, contact time and morphology of hybrid (pH of synthesis) as the main parameters on removal efficiency and removal capability of hybrid on copper ions have been explored. Composites contained between 0.7 and 5wt% boehmite content and those with dissimilar morphology prepared with different pH values showed different adsorption behavior. Batch adsorption experiments show that the adsorption performance of the hybrids was enhanced with increased boehmite and contact time. The highest removal efficiency and adsorption capability were achieved when the hybrid was prepared at pH 8 with associated increased catalytic activity. Graphic abstract

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Kinetic and thermodynamic studies on the adsorption of Cu2+ ions from aqueous solution by using agricultural waste-derived biochars

Water Science & Technology Water Supply ◽

10.2166/ws.2020.193 ◽

2020 ◽

Vol 20 (8) ◽

pp. 3120-3140

Author(s):

Nihan Kaya ◽

Ferhat Arslan ◽

Zeynep Yıldız Uzun ◽

Selim Ceylan

Keyword(s):

Aqueous Solution ◽

Copper Ions ◽

Agricultural Waste ◽

Experimental Results ◽

Walnut Shell ◽

Isotherm Models ◽

Batch Adsorption ◽

Adsorption Parameters ◽

Mixing Speed ◽

Hazelnut Shell

Abstract In this study, it was aimed to investigate the adsorption properties of the biochars obtained by pyrolysis of hazelnut and walnut shells for removal of copper ions from aqueous solutions. The characterization of raw biomasses and also biochars were performed using TGA-DTG, FT-IR, BET, SEM, partial and elemental analysis techniques. The optimum conditions were determined by investigating the effect of adsorption parameters (initial concentration, temperature, adsorbent amount, pH, contact time and mixing speed) for efficient removal of copper ions from aqueous solution by batch adsorption experiments carried out under different conditions. The highest adsorption efficiencies were recorded as 82 and 86% respectively for hazelnut and walnut shell biochars at pH 4, Co = 15 ppm, adsorbent dosage = 3 g/L and mixing speed = 600 rpm. Experimental results showed that the adsorption efficiency for copper ions increased with the increase of temperature (T = 45 °C) in studies only using biochar obtained from hazelnut shell. While the time of equilibrium in the aqueous solution containing copper ions was determined to be 75 min for walnut shell char, this duration was 30 min for hazelnut shell char. The experimental results were investigated in terms of Langmuir, Freundlich and Temkin isotherm models. Together with the calculated thermodynamic parameters, the adsorption mechanism was explained. In order to determine the kinetic model of the adsorption process, the experimental data were applied to pseudo first-order, pseudo second-order and intra-particle diffusion models, and the model constants were investigated.

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An Investigation on Design and Characterization of a Highly Selective LED Optical Sensor for Copper Ions in Aqueous Solutions

Sensors ◽

10.3390/s21041099 ◽

2021 ◽

Vol 21 (4) ◽

pp. 1099

Author(s):

Sheng-Chun Hung ◽

Chih-Cheng Lu ◽

Yu-Ting Wu

Keyword(s):

Aqueous Solutions ◽

Metal Ions ◽

Copper Ions ◽

Incident Light ◽

Copper Ion ◽

Intensity Change ◽

Optical Absorbance ◽

Sensing System ◽

Optic Sensor ◽

Cu Ions

The optical characteristics of copper ion detection, such as the photometric absorbance of specific wavelengths, exhibit significant intensity change upon incident light into the aqueous solutions with different concentrations of metal ions due to the electron transition in the orbit. In this study, we developed a low-cost, small-size and fast-response photoelectric sensing prototype as an optic sensor for copper (Cu) ions detection by utilizing the principle of optical absorption. We quantified the change of optical absorbance from infra-red (IR) light emitting diodes (LEDs) upon different concentrations of copper ions and the transmitted optical signals were transferred to the corresponding output voltage through a phototransistor and circuit integrated in the photoelectric sensing system. The optic sensor for copper (Cu) ions demonstrated not only excellent specificity with other metal ions such as cadmium (Cd), nickel (Ni), iron (Fe) and chloride (Cl) ions in the same aqueous solution but also satisfactory linearity and reproducibility. The sensitivity of the preliminary sensing system for copper ions was 29 mV/ppm from 0 to 1000 ppm. In addition, significant ion-selective characteristics and anti-interference capability were also observed in the experiments by the proposed approach.

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