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Journal articles on the topic 'Batch adsorption study'

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Published: 5 June 2025

Last updated: 1 August 2025

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1

Biswas, Swarup, and Umesh Mishra. "Calcium PretreatedHevea brasiliensisSawdust for Copper Removal: Batch and Column Study." Journal of Chemistry 2015 (2015): 1–9. http://dx.doi.org/10.1155/2015/495257.

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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 th

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2

Atul, K. Wanjari* Umesh E. Chaudhari. "REMOVAL OF Cr (VI) FROM AQUEOUS SOLUTION USING GRANULAR ACTIVATED CHARCOAL PREPARED FROM CORDIA MACLEODII TREE BARK AND SURFACE MODIFIED GRANULAR ACTIVATED CHARCOAL: A COMPARATIVE STUDY VIA SPECTROSCOPIC CHARACTERIZATIONS." INTERNATIONAL JOURNAL OF ENGINEERING SCIENCES & RESEARCH TECHNOLOGY 5, no. 10 (2016): 304–16. https://doi.org/10.5281/zenodo.160864.

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Granular Activated Charcoal (GAC) was prepared by using Cordia macleodii tree bark and was tested for the removal of Chromium (VI). All the experiments were carried out in batch process. To enhance its metal ions adsorption capacity, activated carbons were impregnated with the chelating agents like sodium dodecyl sulfate (SDS), sodium dodecyl benzeneulfonate (SDBS) and Dioctyl sulfosuccinate sodium salt (DOSS) and were tested for the removal of Chromium (VI). Adsorption isotherms of Chromium ions in aqueous solution have been experimentally measured on both modified and unmodified charcoal. Ef

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Huang, Sui Liang. "Adsorption of Cadmium Ions onto the Yellow River Sediment." Water Quality Research Journal 38, no. 2 (2003): 413–32. http://dx.doi.org/10.2166/wqrj.2003.026.

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Abstract Adsorption of cadmium ions onto Yellow River sediment was studied in a batch reactor. Equilibrium adsorption of cadmium ions onto Yellow River sediment can be well described by the Langmuir adsorption isotherm. In view of common experimental conditions in the batch reactor, a set of equations for describing variations of both the dissolved heavy metal pollutant concentration and the particulate heavy metal pollutant concentrations (the adsorption content of heavy metal pollutant on unit weight of sediment) with time was formulated with the use of an adsorptive reaction kinetic equatio

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Srisorrachatr, Siriwan. "Study of Dyestuff Removal from Solution by Sunflower Seed Husk." Advanced Materials Research 236-238 (May 2011): 3016–19. http://dx.doi.org/10.4028/www.scientific.net/amr.236-238.3016.

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The removal of dyes from synthetic wastewater by sunflower husk was studied in batch and dynamics removal. The extent of adsorption was studied in batch as a function of burning temperature, chemical treatment, adsorbents size, pH and solution temperature. Methylene blue and Mexican red in aqueous solution was used as synthetic wastewater. Dynamic removal of methylene blue and Mexican red by sunflower husk was also studied in packed bed column. In batch, both dyes were removed with the maximum adsorption by unburned adsorbents. Removal of methylene blue was increased when the adsorbents treate

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Patel, Himanshu. "Adsorptive batch and column studies of Congo Red onto gulmohar leaf powder." European Journal of Chemistry 9, no. 2 (2018): 107–14. http://dx.doi.org/10.5155/eurjchem.9.2.107-114.1707.

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The present manuscript describes the adsorptive batch and column treatment of synthetic Congo Red dye onto naturally prepared adsorbents viz. gulmohar leaf powder and activated gulmohar leaf powder using sulfuric acid. The surface characterizations of naturally prepared adsorbents were performed by various sophisticated analytical techniques. Effect of various process parameters like adsorbent dosage, temperature, initial concentration, and pH for batch study; and flow rate and bed height for column study are explored. All batch adsorption data are analyzed using Freundlich and Langmuir adsorp

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Zhang, Xiao, S. Lee Barbour, and John V. Headley. "A diffusion batch method for determination of the adsorption coefficient of benzene on clay soils." Canadian Geotechnical Journal 35, no. 4 (1998): 622–29. http://dx.doi.org/10.1139/t98-023.

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The adsorption and desorption of contaminants on soil and sediment are key mechanisms governing the fate and transport of aqueous-phase hydrocarbons in groundwater. A diffusion batch method for measuring the adsorption coefficient was developed in this study. This method provides a simple and reliable procedure for assessing the adsorption of organic compounds by soil. The method relies on diffusion, rather than shaking and agitation, to bring the solid and solution into chemical equilibrium. Samples of Regina clay, prepared by a variety of methods, were tested for benzene adsorption using thi

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Yan, Shiwei, Wei Yu, Ting Yang, Qi Li, and Jiahua Guo. "The Adsorption of Corn Stalk Biochar for Pb and Cd: Preparation, Characterization, and Batch Adsorption Study." Separations 9, no. 2 (2022): 22. http://dx.doi.org/10.3390/separations9020022.

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Biochar adsorption emerges as a convenient and cheap treatment technology to cope with the metal pollution in wastewater. In this study, a biochar made from corn stalks was prepared and its adsorption characteristics for two heavy metals, Pb and Cd, were investigated by materials characterization and batch experiments. Biochar pyrolyzed from waste corn stalks at 400–600 °C, where biochar prepared at 600 °C (BC600) was used to perform following experiments. In materials characterization, the SEM images were initially used to reveal an obvious porous structure feature of corn stalk biochar, foll

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Moh, H. T., Ivy A. W. Tan, and Leonard L. P. Lim. "Removal of Atrazine from Water Using Oil Palm Shell Based Adsorbents: Equilibrium and Kinetic Study." Journal of Civil Engineering, Science and Technology 4, no. 2 (2013): 18–23. http://dx.doi.org/10.33736/jcest.114.2013.

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Adsorption using granular activated carbon (GAC) in a permeable reactive barrier (PRB) has been proven in inhibiting the further spread of contaminant plumes in groundwater. GAC synthesized from oil palm shell was chosen for groundwater remediation in this study due to the low operation cost using the adsorption process. In this study, GAC synthesized from oil palm shells were used as adsorbent to adsorb atrazine from water. This study involved a series of batch experiment to determine the adsorption equilibrium and kinetics of adsorbent. The batch experiment was conducted by shaking conical f

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9

Milićević, Sonja, Milica Vlahović, Milan Kragović, et al. "Removal of Copper from Mining Wastewater Using Natural Raw Material—Comparative Study between the Synthetic and Natural Wastewater Samples." Minerals 10, no. 9 (2020): 753. http://dx.doi.org/10.3390/min10090753.

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The intent in this paper is to define how the batch equilibrium results of copper removal from a synthetic solution on natural zeolite can be used for prediction of the breakthrough curves in the fixed-bed system for both a synthetic solution and wastewater. Natural zeolite from the Vranjska Banja deposit, Serbia, has been fully characterized (XRD, chemical composition, DTA/TG, SEM/EDS) as a clinoptilolite with cation exchange capacity of 146 meq/100 g. The maximum adsorption capacity (qm) in the batch of the mono-component system (synthetic copper solution) obtained using the Langmuir isother

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Sun, Xing Bin, and Jin Zhu Han. "Study on Modification and Phosphorus-Adsorption Capacity of Zeolite." Advanced Materials Research 113-116 (June 2010): 757–60. http://dx.doi.org/10.4028/www.scientific.net/amr.113-116.757.

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Zeolite is a kind of normal adsorber. Unfortunately the adsorption capacity of natural zeolite is low, it must be activated on behalf of reaching a higher adsorption capacity. On this condition, removal of phosphorus through modifying zeolite has been studied in lab scale through using a mechanically stirred batch system. The results showed that the adsorption isotherm of modified zeolite conformed to Freundlich model and the rate of adsorption conformed to Banerm equation.

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11

Sneha, Tomar, B. Soni A., and Manivannan R. "Batch and continuous adsorption of crystal violet and congo red by raw coconut fiber." Journal of Indian Chemical Society Vol. 97, Jul 2020 (2020): 1055–60. https://doi.org/10.5281/zenodo.5667982.

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Department of Chemical Engineering, National Institute of Technology Raipur, Raipur-492 010, Chhattisgarh, India <em>E-mail</em>: rmani.che@nitrr.ac.in <em>Manuscript received online 30 April 2020, accepted 12 June 2020</em> In this study, raw coconut fiber (Cocosnucifera) was employed as an adsorbent for elimination of cationic dye and anionic dye viz. crystal violet (CV) and congo red (CR) respectively. Batch adsorption experiments were performed at identical conditions to understand the impact of parameters viz. initial concentration (6 to 100 mg/L), adsorbent dosage (0.05 to 3.5 g), contac

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Sahu, Naincy, Chandra Bhan, and Jiwan Singh. "Removal of fluoride from an aqueous solution by batch and column process using activated carbon derived from iron infused Pisum sativum peel: characterization, Isotherm, kinetics study." Environmental Engineering Research 26, no. 4 (2020): 200241–0. http://dx.doi.org/10.4491/eer.2020.241.

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The present study investigated the adsorption efficiency of magnetic activated carbon was synthesized by waste biomass of Pisum sativum (peel) and pyrolysis at 500˚C temperature (MPPAC-500). Derived activated carbon was applied for removal of fluoride from aqueous solution. The MPPAC-500 was characterized by Fourier Transform Infrared Spectroscopy (FTIR), Scanning Electron Microscopy (SEM), zeta potential, X-ray Diffraction (XRD) and Particle Size Analyser. The fluoride sequestration study was performed in both batch and column systems. The batch adsorption study was focused on parameter like,

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Kausar, Abida, Haq Nawaz Bhatti, Munawar Iqbal, and Aisha Ashraf. "Batch versus column modes for the adsorption of radioactive metal onto rice husk waste: conditions optimization through response surface methodology." Water Science and Technology 76, no. 5 (2017): 1035–43. http://dx.doi.org/10.2166/wst.2017.220.

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Batch and column adsorption modes were compared for the adsorption of U(VI) ions using rice husk waste biomass (RHWB). Response surface methodology was employed for the optimization of process variables, i.e., (pH (A), adsorbent dose (B), initial ion concentration (C)) in batch mode. The B, C and C2 affected the U(VI) adsorption significantly in batch mode. The developed quadratic model was found to be validated on the basis of regression coefficient as well as analysis of variance. The predicted and actual values were found to be correlated well, with negligible residual value, and B, C and C

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14

Biswas, Swarup, and Umesh Mishra. "Effective Remediation of Lead Ions from Aqueous Solution by Chemically Carbonized Rubber Wood Sawdust: Equilibrium, Kinetics, and Thermodynamic Study." Journal of Chemistry 2015 (2015): 1–8. http://dx.doi.org/10.1155/2015/842707.

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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

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15

Sanford, Serena, Kripa S. Singh, Sahil Chaini, and Gaetan LeClair. "Study of natural adsorbent chitosan and derivatives for the removal of caffeine from water." Water Quality Research Journal 47, no. 1 (2012): 80–90. http://dx.doi.org/10.2166/wqrjc.2012.021.

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The adsorption of caffeine was evaluated using natural adsorbent chitosan and three derivates of the material. Raw, H2O2 pre-treated, and a chemically altered chitosan were compared to activated carbon. Activated carbon was found to have a high affinity for caffeine (98% removal) while raw chitosan performed poorly with an average adsorption of 15.9%. Batch tests in acidic and basic conditions as well as increasing dosage did not have an effect on the performance. Chemical modifications to chitosan included calcinated mesoporous materials and non-calcinated materials, both of which increased c

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16

Budianta, Wawan, Adinda Ardiana, and Norma Dian Andriyani. "The removal of lead by natural zeolite." E3S Web of Conferences 200 (2020): 06012. http://dx.doi.org/10.1051/e3sconf/202020006012.

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This study aimed to evaluate the ability of natural zeolite samples obtained from Gunungkidul, Yogyakarta, Indonesia in the removal of lead (Pb) in solutions. This study included mineralogical characterization as well as a batch test in the laboratory with parameters including grain size, the mass of natural zeolite sample, pH, and initial concentration of the solution. The results of mineralogical characterization showed that the natural zeolite sample have varied constituent on mineral components and relatively have high cation exchange capacity (CEC). The results of the batch test showed th

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17

Saha, Papita. "Study on the Removal of Methylene Blue Dye Using Chemically Treated Rice Husk." Asian Journal of Water, Environment and Pollution 7, no. 2 (2010): 31–41. http://dx.doi.org/10.3233/ajw-2010-7_2_06.

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To remove methylene blue dye from wastewater, chemically modified rice husk has been used in the laboratory scale that comprises batch study leading to adsorption kinetics rate constants and maximum adsorption capacities. It has been observed that almost 95–99% of dye can be removed from the solution using treated rice husk. Langmuir adsorption isotherm, Freundlich isotherm model and Temkin model have been used to describe the distribution of dye between the liquid and solid phases in batch studies and it has been found that Langmuir isotherm represents the phenomenon better than other isother

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18

Maria Subashini, L., and B. Saritha. "Treatability Study on Textile Wastewater using Water Hyacinth Bioadsorbent." IOP Conference Series: Earth and Environmental Science 1280, no. 1 (2023): 012053. http://dx.doi.org/10.1088/1755-1315/1280/1/012053.

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Abstract Textile dye effluent consists of dye colour and other harmful organics has been a major problem to the Environment due to Industrial development. The most effective adsorption in textile dye wastewater is attained by using commercially activated carbon. The creation of adsorbent, which may be utilized as an alternative, inexpensive method of treating the dye produced during the textile manufacturing process, can benefit greatly from agricultural wastes. In this study, the characterization of the textile dye waste water sample was done and the adsorptive capacity of Water hyacinth bioc

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19

Liu, Zheng, Sijie Zheng, and Daolong Zhang. "Al-Impregnated Granular Activated Carbon for Removal of Fluoride from Aqueous Solution: Batch and Fixed-Bed Column Study." Water 14, no. 21 (2022): 3554. http://dx.doi.org/10.3390/w14213554.

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Fluoride pollution in water has been reported in many regions and countries. Adsorption is the most commonly used process for treating fluoride-containing water. For industrial applications, the treatment of a pollutant is normally performed in continuous column mode. In this work, batch and lab-scale column studies were conducted by applying modified granular activated carbon (MGAC) to remove fluoride (F−) from an aqueous solution. MGAC was prepared by a wet impregnation method and characterized using SEM and FTIR. Batch studies presented the adsorption of F− onto MGAC following the Freundlic

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20

Usman, Muhammad, Ioannis Katsoyiannis, Manassis Mitrakas, Anastasios Zouboulis, and Mathias Ernst. "Performance Evaluation of Small Sized Powdered Ferric Hydroxide as Arsenic Adsorbent." Water 10, no. 7 (2018): 957. http://dx.doi.org/10.3390/w10070957.

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The small sized powdered ferric oxy-hydroxide, termed Dust Ferric Hydroxide (DFH), was applied in batch adsorption experiments to remove arsenic species from water. The DFH was characterized in terms of zero point charge, zeta potential, surface charge density, particle size and moisture content. Batch adsorption isotherm experiments indicated that the Freundlich model described the isothermal adsorption behavior of arsenic species notably well. The results indicated that the adsorption capacity of DFH in deionized ultrapure water, applying a residual equilibrium concentration of 10 µg/L at th

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21

Marey, A., and Doaa F. Ahmed. "Batch Adsorption Studies of Natural Composite Hydrogel for Removal of Co(II) Ions." Journal of Applied Membrane Science & Technology 26, no. 3 (2022): 13–18. http://dx.doi.org/10.11113/amst.v26n3.244.

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Innovative methods for handling industrial wastewater containing heavy metals has been receiving significant attention from researchers in recent years. Proper treatment of wastewater is compulsory to avoid the release of toxic heavy metal ions into water bodies. In this study, we developed a new adsorptive material, i.e., orange peel/acrylamide composite hydrogel for the removal of Co(II) ions from aqueous solution. The results showed that the adsorption of Co(II) by our hydrogen was well-fitted with the pseudo-second-order model. Its adsorption rate against Co(II) ions could reach up to 56 m

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Journal, Baghdad Science. "Adsorption and Thermodynamic Study of Direct Blue 71 Dye on to natural Flint Clay from Aqueous Solution." Baghdad Science Journal 13, no. 2 (2016): 66–74. http://dx.doi.org/10.21123/bsj.13.2.66-74.

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The remove of direct blue (DB71) anionic dye on flint clay in aqueous solution was investigated by using a batch system for various dye concentrations. The contact time, pH, adsorbent dose, and temperature was studied under batch adsorption technique. The data of adsorption equilibrium fit with isotherm Langmuar and Freiundlich ,when the correlation coefficient used to elucidate the best fitting isotherm model. The thermodynamic parameters such as, ?Hº ,?Sº and ?Gº. Thermodynamic analysis indicated that the sorption of the dyes onto Flint clay was endothermic and spontaneous.

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A. Alnajar, Jenan, Asawer A. Kwaeri, Ramzi H. Sayhood, and Abbas H. Slaymon. "Study the Feasibility of Alumina for the Adsorption of Metal Ions from Water." Iraqi Journal of Chemical and Petroleum Engineering 15, no. 3 (2014): 37–50. http://dx.doi.org/10.31699/ijcpe.2014.3.5.

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The present work describes the adsorption of Ba2+ and Mg2+ions from aqueous solutions by activated alumina in single and binary system using batch adsorption. The effect of different parameters such as amount of alumina, concentration of metal ions, pH of solution, contact time and agitation speed on the adsorption process was studied. The optimum adsorbent dosage was found to be 0.5 g and 1.5 g for removal of Ba2+ and Mg2+, respectively. The optimum pH, contact time and agitation speed, were found to be pH 6, 2h and 300 rpm, respectively, for removal of both metal ions. The equilibrium data w

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Lin, Shao Hua, Jie Rui Li, Zheng Wang, and Zhao Qian Jing. "Study on Adsorption Characteristics of Ni (II) by Palygorskite." Advanced Materials Research 136 (October 2010): 289–92. http://dx.doi.org/10.4028/www.scientific.net/amr.136.289.

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Adsorption characteristics of Ni (II) by Palygorskite were investigated using a batch adsorption, and the effects of various experimental parameters were discussed. Results showed that the adsorption capacity of palygorskite for Ni (II) increased with increasing contact time and amount of adsorbent. Ni (II) adsorption onto palygorskite was well fitted by the pseudo-first-order kinetic model. Adsorption capacity increased to a maximum as the treating temperature increased to 673K. Heat-activation at 773K resulted in degradation of channel structure and adsorption capacity loss of palygorskite.

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Chen, Shao Hua, Yu Bin Jiao, Xiao Na Zhang, Yin Yin Su, and Run Ping Han. "Adsorption of Methyl Orange from Solution by IOCZ in Batch Mode: Equilibrium Study." Advanced Materials Research 581-582 (October 2012): 33–36. http://dx.doi.org/10.4028/www.scientific.net/amr.581-582.33.

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The research was designed to test the properties of Iron-Oxide-Coated-Zeolite (IOCZ) for adsorption of methyl orange (MO) from synthetic solutions. Contact time and equilibrium MO concentration were adopted to study their effects on MO adsorption. The results showed that adsorbent quantity of MO onto IOCZ increased with the equilibrium concentration increasing. The equilibrium data was fitted better by Freundlich model. The thermodynamic parameters (ΔG0, ΔH0, and ΔS0) were also determined from the temperature dependence. The results showed that the process of adsorption MO was spontaneous and

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Salman, Jassem M. "Batch Study for Insecticide Carbofuran Adsorption onto Palm-Oil-Fronds-Activated Carbon." Journal of Chemistry 2013 (2013): 1–5. http://dx.doi.org/10.1155/2013/630371.

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The adsorption of insecticide, carbofuran from aqueous solution onto activated carbon derived from palm oil fronds (PFAC) was investigated through batch study. The effects of both initial concentration and pH of the carbofuran over the range of 25 to 250 mg/L and 2 to 12, respectively, on the adsorption of the prepared PFAC were studied in batch experiments. Equilibrium data were fitted to the Langmuir, the Freundlich, and the Temkin isotherm models. The results obtained from application of these models show that the best fits were achieved with the Langmuir model, and a maximum monolayer adso

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Imran-Shaukat, Muhammad, Nur Rafikah binti Rosli, Rafeah Wahi, Sharifah Mona Abd Aziz Abdullah, and Zainab Ngaini. "Chemically Modified Coconut Shell Biochar for Removal of Heavy Metals from Aqueous Solution." Defect and Diffusion Forum 411 (September 8, 2021): 79–91. http://dx.doi.org/10.4028/www.scientific.net/ddf.411.79.

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In this study, coconut shells were converted into biochar via pyrolysis and chemically modified via an acid-base treatment to enrich its adsorption capabilities. Batch experiments were carried out to analyze the adsorption potential of the modified coconut shell (MCSC) or removal of chromium, nickel, and copper from aqueous solution. The chemical modification increased the surface area of MCSC to 185.712 m2/g. Batch adsorption study using MCSC resulted in 99% removal of copper, 95% (nickel), and 39% (chromium). The adsorption of studied metal ions fitted well with Langmuir isotherm, showing a

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Fang, Run. "Preparation of Corncob-Based Bio-Char and its Application in Removing Basic Dyes from Aqueous Solution." Advanced Materials Research 550-553 (July 2012): 2420–23. http://dx.doi.org/10.4028/www.scientific.net/amr.550-553.2420.

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This study presents the preparation of corncob-based bio-char and its application in adsorptive removal of three basic dyes (methylene blue, crystal violet and basic fuchsin) from aqueous solution. The adsorption behavior of basic dyes on bio-char was investigated via batch experiments. Experimental results showed that the adsorption efficiency of bio-char increased with increasing solution pH and temperature. Thermodynamic parameters demonstrated the spontaneous and endothermic nature of the adsorption. The dye removal process fitted the Langmuir isotherm well. The adsorption capacity of bio-

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Wang, Ying, and Zhiqing Lai. "Study on the Adsorption Properties of D113 Cation Exchange Resin for Zn2+." Revista de Chimie 73, no. 3 (2022): 87–96. http://dx.doi.org/10.37358/rc.22.3.8538.

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The adsorption properties of D113 cation exchange resins on Zn2+ were researched systematically using the traditional batch method. Under different initial Zn2+ concentrations, reaction times, and temperatures, the adsorption efficiency and capacity were measured respectively. In addition, the adsorption equilibrium of D113 resin for Zn2+ obeyed the Langmuir adsorption isotherm model well; the adsorption process agreed with pseudo second-order kinetics model, and was dominated by chemisorption; ΔH＞0 and ΔG＞0 at different temperatures indicated the adsorption was a spontaneous endothermic proce

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Varsha, Srivastava, Gusain Deepak, Weng Chih-Huang, and C. Sharma Yogesh. "Removal of Ni(II) from aqueous solutions by adsorption on nano-Fe3O4 Kinetics and mass transfer study." Journal of Indian Chemical Society Vol. 90, Jul 2013 (2013): 997–1003. https://doi.org/10.5281/zenodo.5774789.

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Department of Chemistry, Indian Institute of Technology, Banaras Hindu University, Varanasi-221 005, Uttar Pradesh, India Department of Civil and Ecological Engineering, I Shou University, Kaohsiung County, 84001, Taiwan, ROC <em>Manuscript received online 17 July 2012, accepted 20 August 2012</em> The present study was undertaken to investigate the efficiency of nano-Fe3O<sub>4</sub> (<em>n</em>-Fe3O<sub>4</sub>) for the removal of nickel from their aqueous solutions. Removal process of Ni(II) was carried out by using batch adsorption experiments. Various important process parameters such as

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Shivasharanappa, Padaki Srinivas, and Srinivas Kushtagi. "Adsorption Studies of Nitrate by Geo-Physical Environment (Laterite Soil) of the Study Area Bidar Urban & its Industrial Area, Karnataka State, India." International Letters of Chemistry, Physics and Astronomy 11 (September 2013): 66–76. http://dx.doi.org/10.18052/www.scipress.com/ilcpa.11.66.

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In the present work, adsorption of Nitrate on Laterite soil has been studied using batch adsorption techniques. Main objectives of this study is to study the physical properties of Laterite soil, detection of Nitrate removal by adsorbent Laterite soil as a function of contact time, adsorbent dosage, pH, to study sorption kinetics, and to study isothermal pattern. The results of this study showed that the Optimum contact time, Optimum dosage and Optimum pH for adsorption of Nitrate on Laterite soil reached to equilibrium after 130 minutes, with removal efficiency of 68 %, 1400 mg as optimum dos

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Shivasharanappa, Padaki Srinivas, and Srinivas Kushtagi. "Adsorption Studies of Nitrate by Geo-Physical Environment (Laterite Soil) of the Study Area Bidar Urban & its Industrial Area, Karnataka State, India." International Letters of Chemistry, Physics and Astronomy 11 (April 2, 2013): 66–76. http://dx.doi.org/10.56431/p-ccdg93.

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In the present work, adsorption of Nitrate on Laterite soil has been studied using batch adsorption techniques. Main objectives of this study is to study the physical properties of Laterite soil, detection of Nitrate removal by adsorbent Laterite soil as a function of contact time, adsorbent dosage, pH, to study sorption kinetics, and to study isothermal pattern. The results of this study showed that the Optimum contact time, Optimum dosage and Optimum pH for adsorption of Nitrate on Laterite soil reached to equilibrium after 130 minutes, with removal efficiency of 68 %, 1400 mg as optimum dos

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Rahmiana Zein and Raisha Mashelina -. "THE EFFECT OF CONTACT TIME AND BIOSORBENT TEMPERATURE ON THE ADSORPTION OF INDIGO CARMINE DYES IN KAPOK HUSK BIOSORBENT MODIFIED WITH SNAIL MEAT AND KINETIC STUDY." ALOTROP 7, no. 2 (2023): 92–99. http://dx.doi.org/10.33369/alo.v7i2.30804.

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The use of indigo carmine dye in the textile industry is a source of pollution for the environment. The presence of dye pollutants in the environment can threaten the health of living creatures and the sustainability of the ecosystem. This research uses kapok husk biosorbent modified with snail meat. Previously, research on adsorption was carried out on metals and cationic dyes from kapok husk, then in this research adsorption was carried out using the batch method to adsorb anionic dyes. The biosorbent modification process using snail meat aims to add active sites in the form of functional gr

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Park, Hyun Ju, Duc Canh Nguyen, Choon-Ki Na, and Chung-il Kim. "Applications and limits of theoretical adsorption models for predicting the adsorption properties of adsorbents." Water Science and Technology 72, no. 8 (2015): 1364–74. http://dx.doi.org/10.2166/wst.2015.327.

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The objective of this study is to evaluate the applicability of adsorption models for predicting the properties of adsorbents. The kinetics of the adsorption of NO3− ions on a PP-g-AA-Am non-woven fabric have been investigated under equilibrium conditions in both batch and fixed bed column processes. The adsorption equilibrium experiments in the batch process were carried out under different adsorbate concentration and adsorbent dosage conditions and the results were analyzed using adsorption isotherm models, energy models, and kinetic models. The results of the analysis indicate that the adso

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Yang, Yue Hong, Dun Tao Shu, Ting Dong Fu, and Huai Yu Zhang. "Equilibrium and Kinetics Studies for Adsorption of Cu(II) from Aqueous Solution by Modified Phosphogypusum." Advanced Materials Research 518-523 (May 2012): 369–75. http://dx.doi.org/10.4028/www.scientific.net/amr.518-523.369.

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The purpose of this study was to investigate the adsorption of Cu(II) on phosphogypsum, a waste material from the manufacture of phosphoric acid by wet process. The removal capacity of phosphogypsum for Cu(II) ions was studied as a function of solution pH, contact time, adsorbent dosage and adsorbate concentration. Before batch adsorption study, phosphogypsum was pre-conditioned by calcine without water. The Langmuir and Freundlich theories were used to describe the Cu(II) adsorption process, and the Freundlich isotherm showed the best fit to the process. The adsorptions of Cu(II) followed pse

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Jauris, I. M., C. F. Matos, A. J. G. Zarbin, et al. "Adsorption of anti-inflammatory nimesulide by graphene materials: a combined theoretical and experimental study." Physical Chemistry Chemical Physics 19, no. 33 (2017): 22099–110. http://dx.doi.org/10.1039/c7cp04272h.

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Sumanta, Rakshit, Pal Supriya, and Bhattacharya Soumya. "Assessment of efficacy of clayey soil as liner material in retarding sub-surface leaching of chromium." Journal of Indian Chemical Society Vol. 96, Apr 2019 (2019): 533–37. https://doi.org/10.5281/zenodo.5638099.

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Department of Civil Engineering, National Institute of Technology (NIT) Durgapur, Durgapur-713 209, West Bengal, India <em>E-mail:</em> sumantaxpl@gmail.com <em>Manuscript received online 27 January 2019, accepted 14 March 2019</em> Cr<sup>VI</sup> is considered as one of the priority pollutant emanated mainly from the wastewater discharge of the tannery industries. In the present research work, batch and column adsorption studies were performed to evaluate the Cr<sup>VI</sup> adsorptive potential of the clayey soil. The batch adsorption test results indicate the optimum Cr<sup>VI</sup> remova

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Baseri, J. Raffiea, P. N. Palanisamy, and P. Sivakumar. "Comparative Studies of the Adsorption of Direct Dye on Activated Carbon and Conducting Polymer Composite." E-Journal of Chemistry 9, no. 3 (2012): 1122–34. http://dx.doi.org/10.1155/2012/603196.

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This study analyses the feasibility of removing Direct Blue 71 from aqueous solution by different adsorbents such as activated carbon (TPAC) and Poly pyrrole polymer composite (PPC) prepared fromThevetia Peruviana. Batch mode adsorption was performed to investigate the adsorption capacities of these adsorbents by varying initial dye concentration, temperature, agitation time and pH. The performance of TPAC was compared with PPC. Among the adsorbents, PPC had more adsorption capacity (88.24%) than TPAC (58.82%) at an initial concentration of 50 mg/L and at 30°C. The experimental data best fitte

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Cao, Jianhua, Dongzhou Li, Weihua Liang, and Dayong Wu. "Study on Adsorption of Cu(II) on Chitosan Nanofiber Membranes." International Journal of Nanoscience 13, no. 05n06 (2014): 1460009. http://dx.doi.org/10.1142/s0219581x14600096.

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Chitosan nanofiber membranes by electrospinning technique were used to remove Cu ( II ) from aqueous solution. The adsorption kinetics, equilibrium isotherms, and pH effect were investigated in batch experiments. The Langmuir isotherm and pseudo second-order kinetic models agree well with the experimental data. The chitosan nanofiber membranes are effective for Cu ( II ) adsorption at pH6. Results showed that the maximum adsorption capacity of the chitosan nanofiber membranes with Cu ( II ) is 118.62 mg g-1. The chitosan nanofiber membranes can be used as an effective adsorbent for the removal

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Abdullah, Mohd Fauzi, Nurul Iffah Mohd Said, and Siti Nur Najwa Arman. "ADSORPTION BEHAVIOUR OF THE ARECA CATECHU HUSK ULTRASONIC ASSISTED-PHOSPHORIC ACID ACTIVATED CARBON ON METHYLENE BLUE DYE." Journal of Academia 13, no. 1 (2025): 43–56. https://doi.org/10.24191/joa.v13i1.4586.

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The production of activated carbon from agricultural waste is one of the most environmental-friendly solutions by converting agricultural waste into valuable material. In this study, Areca catechu husk is converted into activated carbon to remove methylene blue (MB) dye in aqueous solution. This Areca Catechu husk was impregnated with phosphoric acid (H3PO4) in an ultrasonic bath for 30 minutes to activate a pore surface before undergo carbonization at temperature of 700 ℃ for 2 hours. The physicochemical properties of the Areca catechu husk activated carbon was characterized by ash content, m

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Lestari, Ajeng Yulianti Dwi, and Achmad Chafidz. "Biosorbent from Petai (Parkia speciosa) Residue for Removing Lead Ion in Aqueous Solution: FTIR Analysis and Adsorption Characteristics Study." Key Engineering Materials 818 (August 2019): 77–81. http://dx.doi.org/10.4028/www.scientific.net/kem.818.77.

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Removing lead ion in aqueous solution using petai (Parkia speciosa) residue was done well. Petai residue is modified with sodium hydroxide and sulfuric acid before batch adsorption process occured. The results showed that the highest adsorption capacity was found in acid modification that was 2.62 mg/g.Temkin and Dubininmodels fit the adsorption isotherms of all adsorbents.

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Lützenkirchen, Johannes, and Florian Huber. "Heterogeneities in Adsorption from Aqueous Solution — An Example of the Effect of Surface Coverage." Adsorption Science & Technology 25, no. 7 (2007): 503–16. http://dx.doi.org/10.1260/0263-6174.25.7.503.

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Studies of the interaction of uranyl species with the surface of quartz are reported. Two approaches were applied. These were (i) the classical static batch adsorption approach in which only the forward adsorption uptake reaction is usually studied and (ii) a dynamic column approach in which the retention of a solute during its migration through a porous medium is investigated and where adsorption and desorption are both relevant for the final breakthrough curve. In this paper, we present the results of a column study at pH 4. Under these conditions, the interference of the carbonate ion (via

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Zhou, Neng, Zhen Zhou, Yuan Qin, and Chu Jie Zeng. "Study on the Removal of Heavy Metals by Biomass." Advanced Materials Research 634-638 (January 2013): 276–79. http://dx.doi.org/10.4028/www.scientific.net/amr.634-638.276.

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In this paper, the adsorption of heavy metals by biomass, namely dry garlic stem, an environmentally-friendly and natural adsorbent, were studied．The efficiency of the adsorbent was studied under different experimental conditions by varying parameters such as pH, initial concentration and contact time using batch adsorption technique. The results show that at pH 5.50, room temperature, the adsorption time 90 min and the amount of garlic stem 0.5 g, Co2+ have the maximum adsorption capacity. The maximum adsorption capacity of the Co2+ on garlic stem is 14.9 mg/g. At pH 9.50, the adsorption time

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Montazerolghaem, Maryam, Amir Rahimi, and Fakhry Seyedeyn-Azad. "A Mathematical Modeling and Experimental Study on Adsorptive Desulfurization of Model Gasoline Using Synthesized Ni–Y and Ce–Y Zeolites." Chemical Product and Process Modeling 9, no. 2 (2014): 155–64. http://dx.doi.org/10.1515/cppm-2014-0012.

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Abstract In this study, Ni–Y and Ce–Y zeolites are prepared using synthesized Na–Y zeolite through solid-state ion-exchange method. The adsorptive desulfurization of a model gasoline containing 194, 116 and 72 ppmw sulfur is evaluated in a batch system under ambient conditions. A dynamic model is established in order to investigate the performance of the adsorption process. The model predictions are compared with the obtained experimental results for thiophene adsorption on Ni–Y and Ce–Y zeolites from model solution containing different concentrations of thiophene, and a good agreement is obse

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Mwaniki, Joseph Munene, John Onam Onyatta, and Yusuf Amir Okeyo. "KINETICS, EQUILIBRIUM AND THERMODYNAMICS STUDY ON THE ADSORPTION OF PB2+ IONS BY WATER HYACINTH POWDER FROM BOTH INDUSTRIAL WASTEWATER AND AQUEOUS SOLUTION." INWASCON Technology Magazine 4 (2022): 34–38. http://dx.doi.org/10.26480/itechmag.04.2022.34.38.

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In this study, water hyacinth powder was an adsorbent for the removal of Pb2+ from an aqueous solution in batch. The individual adsorption capacity of Pb2+ by oven dried water hyacinth powder was studied. The study showed that the adsorption of Pb2+ is better described by the Langmuir isotherm model and the sorption capacity was found to be 16mg/g. Batch adsorption experiments were conducted were used to examine the effects of particle size, pH, contact time and adsorbent dosage on the removal of Pb2+ from aqueous solution by water hyacinth powder. The adsorption efficiency increased with pH a

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Sananmuang, Ratana, Wipharat Chuachuad Chaiyasith, and Kanokwan Wongjan. "Adsorption of Reactive Dyes Red 195, Blue 222, and Yellow 145 in Solution with Polyaniline-Chitosan Membrane Using Batch Reactor." Key Engineering Materials 751 (August 2017): 713–18. http://dx.doi.org/10.4028/www.scientific.net/kem.751.713.

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The objective of this work was to investigate the characteristics of polyaniline-chitosan membrane by SEM, FTIR, tensile strength and percentage elongation and to determine the adsorption behavior of reactive dyes (Yellow 145, Red 195, Blue 222) onto the polyaniline-chitosan membrane. The removal of reactive dyes was investigated in a batch experiment. Parameters influencing the adsorption including pH (2-10), contact time (0-150 min), equilibrium study (30 min to 16 h) and initial concentration (10, 25, 50, 100, 250 and 500 mg×L-1) were studied at room temperature. The dye concentrations were

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Teow, Yeit Haan, Wan Nur Athirah Wan Mohammad Hamdan, and Abdul Wahab Mohammad. "Preparation of Palm Oil Industry’s Biomass-Based Graphene Composite for the Adsorptive Removal of Methylene Blue." Adsorption Science & Technology 2021 (November 11, 2021): 1–11. http://dx.doi.org/10.1155/2021/9130233.

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The ability of POME-based graphene shell composite (P-GSC), an adsorbent generated from oil palm wastes abundantly available in Malaysia such as POME and PKS, was examined in removing methylene blue (MB) dye by adsorption. Adsorption experiments, involving a batch column study and a batch equilibrium study, were conducted to investigate the efficiency of synthesized P-GSC from PKS as a base material in the removal of MB dye. The batch column study demonstrated that small-sized synthesized P-GSC from PKS as a base material could remove up to 98.5% for concentration. Therefore, the following bat

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Ma, Liwang, Lloyd M. Southwick, Guye H. Willis, and H. Magdi Selim. "Hysteretic Characteristics of Atrazine Adsorption-Desorption by a Sharkey Soil." Weed Science 41, no. 4 (1993): 627–33. http://dx.doi.org/10.1017/s0043174500076438.

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The purpose of this study was to quantify hysteresis during adsorption and desorption of atrazine as a function of incubation time for a Sharkey clay soil. Adsorption was carried out using one day batch equilibration and was followed by incubation periods ranging from 1 to 24 d. Incubation was subsequently followed by six consecutive desorption steps where each step represented 1 d. The Freundlich equation (S = K CNwhere S is the amount of atrazine retained, μg g-1; C is concentration, μg ml-1; K is the distribution coefficient, cm3g-1; and N is a dimensionless parameter) was used to describe

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Lei, Xiao Xia, Lin Tang, Guang Ming Zeng, et al. "Study on Magnetic Chitosan Microparticles for Rapid Removal of Heavy Metals." Advanced Materials Research 518-523 (May 2012): 2844–48. http://dx.doi.org/10.4028/www.scientific.net/amr.518-523.2844.

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The magnetic chitosan microparticles were prepared by microemulsion method and raid removal of Cd(Ⅱ) and Pb(Ⅱ). Batch tests were carried out to investigate the adsorption performance. It was found that adsorption of Pb2+and Cd2+was dependent on pH, and increasing the pH is favorable for heavy metal ions removal. The sorption isotherms of the adsorbent for these metals fitted better with Freundlich model than the Langmuir model, with maximum adsorption capacities of 69.83 mg/g and 18.03 mg/g for Pb2+and Cd2+, respectively. The adsorption equilibrium was reached within 15 min. The temperature ef

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Pérez, Jhonny, Nancy Rincón, and Nibis Bracho. "Adsorption evaluation of Rhodamine WT, lithium and chloride in batch reactors inoculated with anaerobic sludge." Revista Facultad de Ingeniería Universidad de Antioquia, no. 58 (February 27, 2013): 74–84. http://dx.doi.org/10.17533/udea.redin.14601.

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The aim of this study is to evaluate trace’s mass adsorptive property of anaerobic sludge in batch reactors. Three types of tracers were prepared, i.e. Rhodamine WT (RWT), lithium and chlorine. 4 reactors of one liter were inoculated with 200 mL (20%) of anaerobic granular sludge from a local brewery and fed with municipal wastewater (ARM) from Maracaibo city. The systems were considered stable when the biogas production was between 35.5 and 40.5 mL/d. At that moment the tracers were added to either reactor. The alkalinity were measured from 360-430 mgCaCO3/L, suffi cient to maintain the pH in

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