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Journal articles on the topic 'Adsorption optimization'

Author: Grafiati

Published: 16 January 2024

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1

Adewoye, LT, SI Mustapha, AG Adeniyi, JO Tijani, MA Amoloye, and LJ Ayinde. "OPTIMIZATION OF NICKEL (II) AND CHROMIUM (III) REMOVAL FROM CONTAMINATED WATER USING SORGHUM BICOLOR." Nigerian Journal of Technology 36, no. 3 (2017): 960–72. http://dx.doi.org/10.4314/njt.v36i3.41.

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A central composite design (CCD) under the response surface methodology (RSM)was used to study the effect of three adsorption variables (pH, initial concentration, and adsorbent dosage) in order to determine the optimum process conditions for the adsorptions of Ni (II) and Cr (III) onto sulphuric acid modified sorghum bicolor activated carbon (SBAC).This study yielded removal efficiency of 98.89 % for Ni (II) and 94.27 % for Cr (III) ion under optimal conditions of pH (8), initial metal ion concentration (25 mg/L), adsorbent dosage (10 mg) and pH (7), initial metal ion concentration (5 mg/L),

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2

Gugushe, Aphiwe Siyasanga, Azile Nqombolo, and Philiswa N. Nomngongo. "Application of Response Surface Methodology and Desirability Function in the Optimization of Adsorptive Remediation of Arsenic from Acid Mine Drainage Using Magnetic Nanocomposite: Equilibrium Studies and Application to Real Samples." Molecules 24, no. 9 (2019): 1792. http://dx.doi.org/10.3390/molecules24091792.

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A magnetic multi-walled carbon nanotube/zeolite nanocomposite was applied for the adsorption and removal of arsenic ions in simulated and real acid mine drainage samples. The adsorption mechanism was investigated using two-parameter (Langmuir, Freundlich, Temkin) and three-parameter (Redlich–Peterson, and Sips) isotherm models. This was done in order to determine the characteristic parameters of the adsorptive removal process. The results showed that the removal process was described by both mono- and multilayer adsorptions. Adsorption studies demonstrated that a multi-walled carbon nanotube/z

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Aristov, Yuriy I., Ivan S. Glaznev, and Ilya S. Girnik. "Optimization of adsorption dynamics in adsorptive chillers: Loose grains configuration." Energy 46, no. 1 (2012): 484–92. http://dx.doi.org/10.1016/j.energy.2012.08.001.

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4

Sujatha, S., R. Sivarethinamohan, A. Oorkalan, et al. "Exclusion of Chromium(VI) Ion in Grueling Activated Carbon Fabricated from Manilkara zapota Tree Wood by Adsorption: Optimization by Response Surface Methodology." Journal of Nanomaterials 2022 (April 23, 2022): 1–9. http://dx.doi.org/10.1155/2022/8157815.

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The current paper makes obvious the elimination of chromium(VI) ion, from wastewater via adsorption technique with activated carbon generated from Manilkara zapota tree (MZTWAC). Preliminarily MZTWAC has undergone characterization studies which uncovered the suitability of MZTWAC to expel chromium(VI) from aqueous solution. Batch adsorption experimentation was premeditated with the competence of central composite design (CCD) and it was executed. Response surface methodology (RSM) was the key optimization software to appraise the adsorptive chattels of MZTWAC engaged in removing chromium(VI) i

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Jin, Xue Yuan, Hong Liu, and San Fu Zhu. "Optimization for Purification Technology of Platycodins by Macroreticular Resin." Advanced Materials Research 781-784 (September 2013): 852–55. http://dx.doi.org/10.4028/www.scientific.net/amr.781-784.852.

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In order to purify the platycodins from Platycodon grandiflorum, AB-8 macroporous resin was used to test. Based on single factor experiments, orthogonal test was used to optimum the purification conditions. Adsorption pH, adsorption temperature, adsorption time and platycodins concentration were as factors and adsorption capacity was as index. The results were as follows: adsorption pH 6.0, adsorption temperature 40°C, adsorption tim110min, platycodins concentration 2.0mg/mL were the optimization conditions.The adsorption quantity reached at 39.1mg/g. So AB-8 macroporous resin was a suitable r

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Mobed, M., and T. M. S. Chang. "Adsorption of chitin derivatives onto liposomes: Optimization of adsorption conditions." Journal of Microencapsulation 15, no. 5 (1998): 595–607. http://dx.doi.org/10.3109/02652049809008243.

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Akulinin, E. I., A. A. Ishin, S. A. Skvortsov, D. S. Dvoretsky, and S. I. Dvoretsky. "Optimization of Adsorption Processes with Cyclic Variable Pressure in Gas Mixture Separation." Advanced Materials & Technologies, no. 3 (2017): 051–60. http://dx.doi.org/10.17277/amt.2017.03.pp.051-060.

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8

Hassan, M. M., K. F. Loughlin, and M. E. Biswas. "Optimization of continuous countercurrent adsorption systems." Separations Technology 6, no. 1 (1996): 19–27. http://dx.doi.org/10.1016/0956-9618(95)00137-9.

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9

Ko, Daeho, and Il Moon. "Multiobjective Optimization of Cyclic Adsorption Processes." Industrial & Engineering Chemistry Research 41, no. 1 (2002): 93–104. http://dx.doi.org/10.1021/ie010288g.

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10

Asanu, Mohammed, Dejene Beyene, and Adisu Befekadu. "Removal of Hexavalent Chromium from Aqueous Solutions Using Natural Zeolite Coated with Magnetic Nanoparticles: Optimization, Kinetics, and Equilibrium Studies." Adsorption Science & Technology 2022 (July 5, 2022): 1–22. http://dx.doi.org/10.1155/2022/8625489.

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Stringent discharge limits, high costs, and low removal efficiency of the conventional treatment methods are facing challenges to handle industrial effluents containing heavy metals. The objective of this study was to use a recoverable magnetic zeolite to remove Cr(VI) from aqueous solution. The study investigated the application of nanotechnology to improve surface properties, recoverability, and adsorptive capacity of natural zeolite and the CCD-RSM-based optimization of adsorption process variables. Natural zeolites coated with various fractions of magnetic nanoparticles (25%, 33.33%, 50%,

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11

Alhothali, Areej, Hifsa Khurshid, Muhammad Raza Ul Mustafa, Kawthar Mostafa Moria, Umer Rashid, and Omaimah Omar Bamasag. "Evaluation of Contemporary Computational Techniques to Optimize Adsorption Process for Simultaneous Removal of COD and TOC in Wastewater." Adsorption Science & Technology 2022 (April 27, 2022): 1–16. http://dx.doi.org/10.1155/2022/7874826.

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This study was aimed at evaluating the artificial neural network (ANN), genetic algorithm (GA), adaptive neurofuzzy interference (ANFIS), and the response surface methodology (RSM) approaches for modeling and optimizing the simultaneous adsorptive removal of chemical oxygen demand (COD) and total organic carbon (TOC) in produced water (PW) using tea waste biochar (TWBC). Comparative analysis of RSM, ANN, and ANFIS models showed mean square error (MSE) as 5.29809, 1.49937, and 0.24164 for adsorption of COD and MSE of 0.11726, 0.10241, and 0.08747 for prediction of TOC adsorption, respectively.

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12

Jung, Dong Hyun, Dae Jin Kim, Tae Bum Lee, Ja Heon Kim, and Seung Hoon Choi. "Grand Canonical Monte Carlo Simulations for the Prediction of Adsorption Capacity of Hydrogen in MOFs." Solid State Phenomena 124-126 (June 2007): 1693–96. http://dx.doi.org/10.4028/www.scientific.net/ssp.124-126.1693.

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We performed grand canonical Monte Carlo simulations on the series of MOFs, that are Metal-Organic Frameworks having various organic linkers and nanocube frameworks, to find out rational design and synthetic strategies toward efficient hydrogen storage materials. The adsorption amounts of hydrogen molecules showed diverse range according to the variation of parameter values. This indicated that the hydrogen adsorption was sensitive to the values of parameters corresponding to the non-bonding interactions. The optimization of the parameters was done to fit the experimental results at 77 K. Afte

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Gizicki, Wojciech, and Tomasz Banaszkiewicz. "Performance Optimization of the Low-Capacity Adsorption Oxygen Generator." Applied Sciences 10, no. 21 (2020): 7495. http://dx.doi.org/10.3390/app10217495.

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This paper presents an innovative method of optimizing energy consumption by a low-capacity adsorption oxygen generator. As a result of the applied optimization, reduction in the energy consumption of oxygen separation by about 40% with a possible increase in the maximum efficiency by about 80% was achieved. The experiments were carried out on a test stand with the use of a commercially available adsorption oxygen generator using the PSA technology. The experimental analysis clearly shows that the adsorption oxygen generators offered for sale are not optimized in terms of energy consumption or

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Chansuvarn, Woravith, Yuttapoom Pandee, Ariya Saechim, and Kritsana Habunmee. "Adsorption of Cadmium(II) Ion from Aqueous Solution onto a Raw Material of Bamboo Powder and its Surface Modification." Applied Mechanics and Materials 879 (March 2018): 131–36. http://dx.doi.org/10.4028/www.scientific.net/amm.879.131.

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This work was focused on evaluating the potential of bamboo powder modified with manganese oxide (MnO-BP) as a low-cost byproduct adsorbent for the adsorption of cadmium(II) ion. A batch method was carried out at room temperature and the optimized conditions. The optimization of adsorption parameters including pH, equilibrium time, dosage and initial Cd(II) concentration was also systematically studied for the removal of cadmium(II) ion. The maximum monolayer adsorption capacity of MnO-BP was estimated as 8.57 mg/g that it more adsorption capacity than untreated-bamboo powder by about 5 times.

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Wen, Tao, Yuanyuan Zhao, Youze Xu, et al. "Optimization of process parameters and kinetics of adsorption treatment of thallium-containing wastewater." E3S Web of Conferences 118 (2019): 01025. http://dx.doi.org/10.1051/e3sconf/201911801025.

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Thallium is an extremely toxic metal and abundant in industrial wastewater but little studied. In order to understand the optimal adsorption kinetic parameters of the chelating resin containing hydrazine wastewater, we carried out adsorption experiments on the cerium-containing wastewater treated by chemical precipitation. In this chapter, the optimum adsorption conditions, adsorption model, dynamic adsorption curve and desorption and regeneration of adsorbent were determined at different pH, temperature, adsorption time and different adsorbent dosage. The results show that the removal rate of

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OA, Olafadehan. "ANN Optimization of Adsorption of Naphthalene on Composite Nanoparticles of Chitosan-CTAB-Sodium Bentonite Clay." Petroleum & Petrochemical Engineering Journal 7, no. 2 (2023): 1–20. http://dx.doi.org/10.23880/ppej-16000354.

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In the present study, nanoparticles of chitosan-cetyltrimethylammonium bromide (CTAB)-sodium bentonite clay were synthesized and characterized using EDX, SEM, FTIR, XRF and XRD techniques. The composite material was utilized as adsorbent for the treatment of contaminated aqueous solution containing naphthalene. The adsorption process was modeled and optimized using artificial neural network (ANN) and ANN–genetic algorithm respectively. The process variables considered were surfactant concentration, X1 , activation time, X 2 , activation temperature, X3 , and chitosan dosage, X4 . The predicted

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Tan, Suat Hian, and Ismail Nurul Ain. "Process Optimization of L-Phenylalanine onto Porous Silica Nanoparticles." Applied Mechanics and Materials 563 (May 2014): 90–93. http://dx.doi.org/10.4028/www.scientific.net/amm.563.90.

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Porous silica nanoparticles play an important role in the field of bioseparations and biomedical applications by offering large surface area and pore volume for adsorption of solutes. The present work deals with the synthesis, characterization and adsorption studies on silica nanoparticles. The nanoparticles were synthesized using tetraethylorthosilicate as starting material and ethanol as solvent by sol-gel method under basic medium. Subsequently, L-phenylalanine was loaded into these nanoparticles by simple adsorption and the adsorption capacity was examined by UV spectrophotometer at 257 nm

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18

Jiang, Xin Long, Yi Hua Jiang, and Cheng Gang Cai. "Response Surface Optimization of Adsorption Conditions of Neutral Red Wastewater by Brewer's Grains." Advanced Materials Research 955-959 (June 2014): 2859–63. http://dx.doi.org/10.4028/www.scientific.net/amr.955-959.2859.

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Abstract: Surface response optimization of adsorption conditions of neutral red wastewater by brewer's grains with the factors of pH value, initial concentration,adsorption temperature, adsorption time, adsorbent quantity and the response of adsorption rate were studied. The optimal parameters for adsorption conditions were of adsorbent concentration of 191.24 mg·L-1, adsorbent particle size of 60~80 mesh,pH 4.65, adsorbent amount of 2.56 g·L-1, adsorption time and temperature of 1.92 h and 30°C, respectively. The maximal absorption rate got 99.16%.The brewer's grains is a promising, cheap, ef

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19

Tai, Yong Kee, Lan Ching Sim, Kah Hon Leong, and Pichiah Saravanan. "Optimization Study of Adsorption Parameter for Removal of Dye Pollutant Using Candle Soot Coated Egg Carton." IOP Conference Series: Earth and Environmental Science 945, no. 1 (2021): 012012. http://dx.doi.org/10.1088/1755-1315/945/1/012012.

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Abstract In this study, several parameters that affect the adsorption capacity of Rhodamine B (RhB) dyes were reviewed which include initial pH, temperature, contact time and initial dye concentration. Experimental data was extracted from other literatures as input for subsequent optimization study. Design Expert version 11.1.2.0 software was used to find the optimal condition for adsorption of RhB dyes from wastewater by using candle soot coated on egg carton (CS-Egg) as absorbent. The Central Composite Design (CCD) in response surface methodology (RSM) was employed to perform the optimizatio

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20

Al Wahedi, Yasser, Arwa H. Rabie, Abdulla Al Shaiba, Frank Geuzebroek, and Prodromos Daoutidis. "Optimization of Adsorption-Based Natural Gas Dryers." Industrial & Engineering Chemistry Research 55, no. 16 (2016): 4658–67. http://dx.doi.org/10.1021/acs.iecr.6b00374.

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21

Nikolić, Dragan, Eustathios S. Kikkinides, and Michael C. Georgiadis. "Optimization of Multibed Pressure Swing Adsorption Processes." Industrial & Engineering Chemistry Research 48, no. 11 (2009): 5388–98. http://dx.doi.org/10.1021/ie801357a.

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22

Kapoor, A., and Ralph T. Yang. "Optimization of a pressure swing adsorption cycle." Industrial & Engineering Chemistry Research 27, no. 1 (1988): 204–6. http://dx.doi.org/10.1021/ie00073a037.

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23

Davis, Mark M., and M. Douglas LeVan. "Experiments on optimization of thermal swing adsorption." Industrial & Engineering Chemistry Research 28, no. 6 (1989): 778–85. http://dx.doi.org/10.1021/ie00090a020.

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24

Karalis, T. K. "Optimization of swelling due to water adsorption." Acta Mechanica 144, no. 1-2 (2000): 83–101. http://dx.doi.org/10.1007/bf01181830.

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25

Santori, G., A. Frazzica, A. Freni, et al. "Optimization and testing on an adsorption dishwasher." Energy 50 (February 2013): 170–76. http://dx.doi.org/10.1016/j.energy.2012.11.031.

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Lei, Xue, and Anatoly F. Zatsepin. "First principles modeling of molecular adsorption on InSe-monolayer." Emerging Materials Research 12, no. 4 (2023): 1–7. http://dx.doi.org/10.1680/jemmr.22.00216.

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In this paper, it demonstrates that the calculated physical adsorption energies, substrate-adsorbent distances, and substrate distortions strongly depend on the size of employed supercell and especially on the type of optimization in the case of very flexible 2D monolayers, such as InSe. It has been established that calculations with optimization of only atomic positions and calculations with optimization of atomic positions and lattice parameters can give energies of different signs and values. In-plane (stretching and compression) and out-of-plane (ripple formation) distortions also lead to

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Song, Zi Yu, and Jian Min Xing. "Optimization of the Bio-Desulfurization for Coupling with Biogas Purification." Advanced Materials Research 518-523 (May 2012): 1771–75. http://dx.doi.org/10.4028/www.scientific.net/amr.518-523.1771.

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Anaerobic digestion process has been widely used for organic wastewater, and could produce biogas which would be one of important sustainable energy. The biogas always contains some toxic, corrosive and odor hydrogen sulfide, which must be removed before utilization. Bio-desulfurization is a novel method for the removal of hydrogen sulfide by sulfide oxidizing bacteria. This process contains hydrogen sulfide adsorption and sulfide oxidizing sections. Sulfide oxidizing section should be coupled with adsorption section. In this study, some important parameters of adsorption section were tested f

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Ravindran, Gobinath, M. Radha Madhavi, and Bashir Suleman Abusahmin. "Optimization of Zinc(II) Adsorption Using Agricultural Waste." International Journal of Engineering & Technology 7, no. 3.34 (2018): 300. http://dx.doi.org/10.14419/ijet.v7i3.34.19212.

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With industrial growth, presence of pollutants is growing enormously. Removal of pollutant from waste water and effluents can be accomplished by various techniques, out of which adsorption was found to be an efficient method. Applications of adsorption limits itself due to high cost of adsorbent. In this regard, a low cost adsorbent produced from palm oil shell based agricultural waste is examined for its efficiency to remove Zn (II) from waste water and aqueous solution. The influence of independent process variables like pH, residence time, initial solution concentration, activated carbon do

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Rajeshkannan, R., M. Rajasimman, and N. Rajamohan. "Decolourization of malachite green using tamarind seed: Optimization, isotherm and kinetic studies." Chemical Industry and Chemical Engineering Quarterly 17, no. 1 (2011): 67–79. http://dx.doi.org/10.2298/ciceq100716056r.

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In this work, removal of malachite green (MG) from aqueous solution using a low cost adsorbent, tamarind seed, was investigated. The adsorbent was characterized using SEM, BET surface area analyzer, and FT-IR. Decolorization of malachite green was studied as a function of different adsorption parameters such as temperature, adsorbent dose, contact time, adsorbent size and agitation speed. These parameters were optimized using response surface methodology (RSM). The significance of different adsorption parameters along with their combined effect on the adsorption process has been established th

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Zhu, Maxiaoqi, Zhicai Zhang, Yiqiuyi Liu та ін. "Optimization of Process Parameters forε-Polylysine Production by Response Surface Methods". International Journal of Polymer Science 2016 (2016): 1–11. http://dx.doi.org/10.1155/2016/3785036.

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ε-Polylysine (ε-PL) is a highly safe natural food preservative with a broad antimicrobial spectrum, excellent corrosion resistances, and great commercial potentials. In the present work, we evaluated theε-PL adsorption performances of HZB-3B and D155 resins and optimized the adsorption and desorption conditions by single-factor test, response surface method, and orthogonal design. The complexes of resin andε-PL were characterized by SEM and FITR. The results indicated that D155 resin had the bestε-PL adsorption performance and was selected for the separation and purification ofε-PL. The condit

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Mohammad, Y. S., E. M. Shaibu-Imodagbe, S. B. Igboro, A. Giwa, and C. A. Okuofu. "Modeling and Optimization for Production of Rice Husk Activated Carbon and Adsorption of Phenol." Journal of Engineering 2014 (2014): 1–10. http://dx.doi.org/10.1155/2014/278075.

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Modeling of adsorption process establishes mathematical relationship between the interacting process variables and process optimization is important in determining the values of factors for which the response is at maximum. In this paper, response surface methodology was employed for the modeling and optimization of adsorption of phenol onto rice husk activated carbon. Among the action variables considered are activated carbon pretreatment temperature, adsorbent dosage, and initial concentration of phenol, while the response variables are removal efficiency and adsorption capacity. Regression

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Arias-Madrid, Daniela, Oscar E. Medina, Jaime Gallego, et al. "NiO, Fe2O3, and MoO3 Supported over SiO2 Nanocatalysts for Asphaltene Adsorption and Catalytic Decomposition: Optimization through a Simplex–Centroid Mixture Design of Experiments." Catalysts 10, no. 5 (2020): 569. http://dx.doi.org/10.3390/catal10050569.

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The main objective of this study was to evaluate the effect of functionalized silica nanoparticles with Fe2O3, NiO, and MoO3 metal oxides on the decomposition of asphaltenes, through an experimental simplex–centroid mixture design for surface area, asphaltene adsorption, and activation energy. The experimental nanoparticle surface area was measured by adsorption of N2. Adsorption isotherms, and the subsequent oxidation process of asphaltenes, were performed through batch adsorption experiments and thermogravimetric analysis, respectively. Among the monometallic systems, the presence of iron in

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Adeola, Adedapo O., and Patricia B. C. Forbes. "Optimization of the sorption of selected polycyclic aromatic hydrocarbons by regenerable graphene wool." Water Science and Technology 80, no. 10 (2019): 1931–43. http://dx.doi.org/10.2166/wst.2020.011.

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Abstract A novel graphene wool (GW) material was used as adsorbent for the removal of phenanthrene (PHEN) and pyrene (PYR) from aqueous solution. Adsorption kinetics, adsorption isotherms, thermodynamics of adsorption and effect of pH, ionic strength, and temperature on the adsorption of PHEN and PYR onto GW were comprehensively investigated. Isothermal and kinetic experimental data were fitted to Langmuir, Freundlich, Temkin, Sips and Dubinin–Radushkevich models, as well as pseudo-first-order and pseudo-second-order kinetic models. The adsorption kinetic data best fit the pseudo-second-order

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Gao, Feng, Ying Xin Ge, Jia Zhao, and Hai Xia Yang. "Technology Optimization Study on Preparation of Activated Carbon from Rice Husk Cracking." Advanced Materials Research 197-198 (February 2011): 931–34. http://dx.doi.org/10.4028/www.scientific.net/amr.197-198.931.

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Response surface methodology (RSM) was adopted to study the key parameters such as activation temperature, activation time, and active agent amount in order to increase activated carbon iodine adsorption value from rice husk. A second order quadratic equation was established and the applicability of model and interaction involved factors on predicting the iodine adsorption value was verified. The results indicated that the effect on the iodine adsorption value was as follows: activation temperature, activation ratio, activation time. The optimal levels for achieving the highest iodine adsorpti

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Isiyaka, Hamza Ahmad, Khairulazhar Jumbri, Nonni Soraya Sambudi, et al. "Adsorption of dicamba and MCPA onto MIL-53(Al) metal–organic framework: response surface methodology and artificial neural network model studies." RSC Advances 10, no. 70 (2020): 43213–24. http://dx.doi.org/10.1039/d0ra07969c.

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Serna-Carrizales, Juan Carlos, Ana I. Zárate-Guzmán, Angélica Aguilar-Aguilar, et al. "Optimization of Binary Adsorption of Metronidazole and Sulfamethoxazole in Aqueous Solution Supported with DFT Calculations." Processes 11, no. 4 (2023): 1009. http://dx.doi.org/10.3390/pr11041009.

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Sulfamethoxazole [SMX] and metronidazole [MNZ] are emergent pollutants commonly found in surface water and wastewater, which can cause public health and environmental issues even at trace levels. An efficient alternative for their removal is the application of adsorption technology. The present work evaluated single and binary adsorption processes using granular activated carbon (CAG F400) for SMX and MNZ in an aqueous solution. The binary adsorption process was studied using a Box–Behnken experimental design (RSD), and the results were statistically tested using an analysis of variance. Densi

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Wang, Yumeng, Wei Li, Hongfei Ma, Wenmiao Guo, and Husheng Jiang. "Adsorption of malachite green by calcined kaolin as adsorbent: optimization, thermodynamic and kinetics studies." Journal of Physics: Conference Series 2343, no. 1 (2022): 012026. http://dx.doi.org/10.1088/1742-6596/2343/1/012026.

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The calcined kaolin was used as adsorbent, and the adsorption effect on malachite green (MG) was studied by changing the oscillation time, pH value, calcined kaolin dosage and temperature, respectively. The results show that calcined kaolin has good adsorption effect on MG. Under the conditions of oscillation time of 180 min, calcined kaolin dosage of 16 g/L, initial MG concentration of 100 mg/L and neutral pH, the MG adsorption rate could reach 98.9%. The adsorption equilibrium data of MG on calcined kaolin conformed to Langmuir and Freundlich isotherms. According to the results of adsorption

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Jiang, Xin Long, and Yi Hua Jiang. "Response Surface Optimization of Adsorption Conditions of Cr (VI) from Wastewater by Modified Brewer's Grains." Advanced Materials Research 781-784 (September 2013): 1931–36. http://dx.doi.org/10.4028/www.scientific.net/amr.781-784.1931.

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Surface response optimization of Adsorption Conditions of Cr(VI) wastewater by modified brewer's grains with the factors of pH value, adsorption temperature, adsorption time, amount of adsorbent and the response of adsorption rate were studied. The optimal parameters for Adsorption Conditions were of adsorbent concentration of 60 mg·L-1, adsorbent particle size of 60~80 mesh, pH 2.23, adsorbent amount of 3.64 g·L-1, adsorption time and temperature of 1.13 h and 30 °C, respectively. The maximal absorption rate got 97.45%.The modified brewer's grains is a promising, cheap, efficient, new biologi

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Kalsido, Adane Woldemedhin, Beteley Tekola Meshesha, Beshah M. Behailu, and Esayas Alemayehu. "Optimization of Fluoride Adsorption on Acid Modified Bentonite Clay Using Fixed-Bed Column by Response Surface Method." Molecules 26, no. 23 (2021): 7112. http://dx.doi.org/10.3390/molecules26237112.

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Using small-scale batch tests, various researchers investigated the adsorptive removal of fluoride using low-cost clay minerals, such as Bentonite. In this study, Column adsorption studies were used to investigate the removal of fluoride from aqueous solution using acid-treated Bentonite (ATB). The effects of initial fluoride concentration, flow rates, and bed depth on fluoride removal efficiency (R) and adsorption capability (qe) in continuous settings were investigated, and the optimal operating condition was determined using central composite design (CCD). The model’s suitability was determ

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Samoila, Petrisor, Corneliu Cojocaru, Igor Cretescu, et al. "Nanosized Spinel Ferrites Synthesized by Sol-Gel Autocombustion for Optimized Removal of Azo Dye from Aqueous Solution." Journal of Nanomaterials 2015 (2015): 1–13. http://dx.doi.org/10.1155/2015/713802.

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Nanosized spinel ferrites MFe2O4(M = Ni, Co, and Zn) have been prepared by sol-gel autocombustion method using citric acid as a fuel agent. The materials are characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and transmission electron microscopy (TEM). The spinel ferrites have been applied for Congo-Red (CR) dye adsorption using batch technique. Different kinetic and equilibrium models have been fitted by nonlinear regression to analyze the adsorption data. In accordance with Langmuir isotherm, the maximum adsorption capacity at 293 K is 14.06 mg/g for Co

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Scherle, Marc, and Ulrich Nieken. "Simultaneous Optimization of Process Operational and Material Parameters for a 2-Bed Adsorption Refrigeration Process." ChemEngineering 4, no. 2 (2020): 31. http://dx.doi.org/10.3390/chemengineering4020031.

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In process engineering, optimization is usually carried out without the simultaneous consideration of material and process. This issue is addressed in the following contribution. A model-based optimization is presented to improve the performance of adsorption heat pumps. Optimization is carried out in two steps. First, we optimize the operational parameters, the cycle time, and the thickness of the adsorbent for a given adsorption material. In a second step we use a material model to predict heat and mass transfer and adsorption capacity from structural material parameters. This allows us to v

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Akulinin, E. I., D. S. Dvoretsky, and S. I. Dvoretsky. "Optimization of Cyclic Adsorption Processes and Gas Mixture Separation Plants." Vestnik Tambovskogo gosudarstvennogo tehnicheskogo universiteta 27, no. 4 (2021): 599–614. http://dx.doi.org/10.17277/vestnik.2021.04.pp.599-614.

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The analysis of the cyclic adsorption process and the installation of separation of gas mixtures by the method of pressure swing adsorption as an object of optimization have been carried out. The study found operating (control) variables (the duration of the adsorption stage, the pressure at the compressor outlet, the coefficient of reverse flow for the regeneration of the adsorbent, the program of changes in the opening time of the inlet and outlet valves of the installation); undefined parameters (composition, temperature and pressure of the initial gas-air mixture); output variables of the

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Zhang, Xuan, Minglu Zhang, Shilong Jiao, Xiaojun Zhang, and Manhong Li. "Optimization Design and Parameter Analysis of a Wheel with Array Magnets." Symmetry 15, no. 5 (2023): 962. http://dx.doi.org/10.3390/sym15050962.

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At present, a large number of magnetic wall-climbing robots are applied to various magnetically conductive metal facades for detection and anti-corrosion work. Limited by the wall-climbing mechanism and adsorption device, most wall-climbing robots can only climb on smooth walls, and it is difficult to adapt to complex walls. Therefore, by studying the multi-media magnetic circuit conduction mechanism, a permanent magnetic adsorption wheel with a magnet array arrangement was designed in this study and applied to a hinge-type wall-climbing robot. By analyzing the influence of structural paramete

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Merzeg, F. Ait, N. Bait, T. Mokrani, I. Akkari, R. Ladji, and K. Bachari. "Phenol adsorption onto olive pomace activated carbon: modelling and optimization." Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu, no. 2 (April 30, 2023): 125–33. http://dx.doi.org/10.33271/nvngu/2023-2/125.

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Purpose. To depollute water contaminated by phenol using the adsorption process in a batch reactor with valorization of olive pomace for the preparation of activated carbon to be used as an adsorbent. Methodology. In this present work, study on the influence of four principal parameters on the adsorption yield during the treatment of polluted water by the process of adsorption were studied, namely: the activated carbon mass, the contact time, the phenol initial concentration and the stirring speed. In addition, the process was optimized with full factorial designs using the response surface me

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Wang, Hui, Yiming Zhou, Xinjiang Hu, et al. "Optimization of Cadmium Adsorption by Magnetic Graphene Oxide Using a Fractional Factorial Design." International Journal of Environmental Research and Public Health 17, no. 18 (2020): 6648. http://dx.doi.org/10.3390/ijerph17186648.

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Graphene materials have attracted increasing interest in water remediation. In this study, magnetic graphene oxide (MGO) was prepared through the modified Hummers method and the adsorption behaviors of cadmium were investigated. Firstly, the sorption kinetics, isotherms, as well as the effects of pH were investigated. Then, fractional factorial design (FFD) was used to optimize the effects of pH, temperature, time, initial concentration of cadmium ion and NaCl on cadmium adsorption. The results indicate that MGO could effectively remove cadmium ions from an aqueous solution and the sorption da

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Zhang, Qing, Yan-mei Ding, Lin Lu, Jing-xi Li, Mei-na Liang, and Yi-nian Zhu. "Phosphate adsorption onto bagasse iron oxide biochar: Parameter optimization, kinetic analysis, and study of mechanism." BioResources 16, no. 1 (2021): 1335–57. http://dx.doi.org/10.15376/biores.16.1.1335-1357.

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This study combined chemical ultrasonic modifications and microwave oven heating to prepare a novel adsorbent, bagasse iron oxide biochar, (BIBC) to remove phosphate from aqueous solutions. The characterization of BIBC was made by energy dispersive spectrometry (EDS), Brunauer–Emmett–Teller (BET), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS) analyses, and the mechanism of phosphorus adsorption on BIBC was researched by adsorption batch experiments with emphasis on pH, dosages of BIBC, initial phosphorus concentration, and a

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Sahu, Naincy, Shalu Rawat, Jiwan Singh, et al. "Process Optimization and Modeling of Methylene Blue Adsorption Using Zero-Valent Iron Nanoparticles Synthesized from Sweet Lime Pulp." Applied Sciences 9, no. 23 (2019): 5112. http://dx.doi.org/10.3390/app9235112.

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The presence of dyes in waterbodies poses severe problems in human and aquatic creatures, and the development of treatment methods for the removal of these pollutants is of utmost importance. This research study investigates the elimination of methylene blue (MB) from an aqueous solution using zero-valent iron nanoparticles synthesized from sweet lime pulp waste (nZVISLP). The purity, chemical composition, and crystalline size of nZVISLP were investigated using microscopic and spectroscopic studies. A maximum MB removal efficiency of 98.9% was obtained at the following optimal conditions: C0:

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Qi, Hongxue, Xianjun Niu, Haipeng Wu, Xiuping Liu, and Yongqiang Chen. "Adsorption of Chromium (VI) by Cu (I)-MOF in Water: Optimization, Kinetics, and Thermodynamics." Journal of Chemistry 2021 (December 24, 2021): 1–9. http://dx.doi.org/10.1155/2021/4413095.

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To investigate the adsorption behavior of Cu (I)-MOF material for chromium (VI) in water, the parameters of influencing adsorption were optimized and found as follows: the optimal pH was 6 for the adsorption of Cr (VI) by the Cu (I)-MOF, the optimal amount of adsorbent was 0.45 g·L−1, and the adsorption saturation time was within 180 min. Subsequently, the kinetics results were fitted by four models such as pseudo-first-order, pseudo-second-order, Elovich, and intraparticle diffusion models. Among them, the adsorption of chromium (VI) was more inclined to the pseudo-first-order model (Radj2 =

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Zhang, Xufeng, Liyu Du, and Wenjuan Jin. "Screening and Optimization of Conditions for the Adsorption of Cd2+ in Serpentine by Using Response Surface Methodology." International Journal of Environmental Research and Public Health 19, no. 24 (2022): 16848. http://dx.doi.org/10.3390/ijerph192416848.

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In order to explore the optimal conditions for the adsorption of Cd2+ in serpentine, this paper studied the adsorption of simulated cadmium solutions with serpentine as an adsorbent. On the basis of a single factor experiment, four factors including the amount of serpentine, initial pH, the initial concentration of solutions, and adsorption time were selected as the influencing factors, and the adsorption quantity and adsorption rate of serpentine to Cd2+ were double response values using the Box–Behnken design. Response surface analyses were used to study the effects of four factors on the ad

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Opeoluwa, Ogundipe S., Latinwo G. Kayode, Ayobami O. Ajani, et al. "Optimization and Isothermal Studies of Antibiotics Mixture Biosorption From Wastewater Using Palm Kernel, Chrysophyllum albidum, and Coconut Shells Biocomposite." Avicenna Journal of Environmental Health Engineering 10, no. 1 (2023): 44–56. http://dx.doi.org/10.34172/ajehe.2023.5316.

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The presence of persistent pharmaceutical products in water bodies is a significant problem that obstructs wastewater reuse. This study investigated the adsorption process for removing the recalcitrant antibiotics, including tetracycline (TC), ampicillin (AMP), and amoxicillin (AMOX) from an aqueous solution using a composite biosorbent made from a mixture of palm kernel shell (PKS), Chrysophyllum albidum (CAS), and coconut shell (CS). Simplex centroid design in the Design of Expert (12.0.1.0) was applied to optimize the percentage composition (20-55%) of the composite biosorbent precursor and

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