scholarly journals SPECIAL FEATURES OF COPPER AND NICKEL SORPTION ON LOW-BASE ANIONITES

2021 ◽  
Vol 3 ◽  
pp. 47-57
Author(s):  
M.K. Kurmanaliev ◽  
◽  
J. Jenisbek ◽  
Keyword(s):  
Heavy Metal Ions ◽  
Initial Rate ◽  
Copper Ions ◽  
Analytical Description ◽  
Sorption Process ◽  
Langmuir Equation ◽  
Dynamic Mode ◽  
Equilibrium Conditions ◽  
Nickel Ions ◽  
Degree Of Extraction

In the work, the regularities of the process of sorption of copper and nickel ions from model solutions by low-base anionites containing coordination secondary groups are investigated. The main kinetic and concentration coordination characteristics of the process of complexation of copper and nickel ions with ligand groups of a low-base sorbent are determined.Potentiometric titration shows that anionite contains low-base functional groups, the pK of which is equal to 7.2.It is established that the process of sorption of copper ions by low-base macroporous anionite is characterized by a high initial rate and rapid achievement of equilibrium, which ensures absorption of copper ions about 70% of the equilibrium values in the first 10- 15 minutes.The main parameters of the sorption process are determined. Analytical description of sorption isotherm in coordinates of Langmuir equation is carried out. It was shown that due to high rates, the degree of extraction from solutions with a concentration of 10- 15 mmol/l under equilibrium conditions reaches 99.6-98.3%.Studies of the sorption process in a dynamic mode showed the possibility of separating heavy metal ions from aqueous solutions on new low-base anionites.

scholarly journals KINETICS AND MECHANISM OF SORPTION OF COPPER (II) IONS BY ION EXCHANGER

2020 ◽  
Vol 6 (444) ◽  
pp. 6-14
Author(s):  
Z. Sh. Nazirov ◽  
◽  
S. M. Turabdzhanov ◽  
B. Sh. Kedelbaev ◽  
T. V. Drabkova ◽  
...  
Keyword(s):  
Cation Exchanger ◽  
Copper Ions ◽  
Effective Diffusion ◽  
Kinetic Equations ◽  
Sorption Process ◽  
Diphenyl Oxide ◽  
Order Kinetic ◽  
Sulfonic Cation Exchanger ◽  
Degree Of Extraction ◽  
Static Conditions

In this article the kinetics of the process of sorption of copper (II) ions from aqueous solutions by polymer sulfonic cation exchanger, an elementary unit containing a heterocycle and a sulfonic group, under static conditions at a temperature of 298 K and a copper concentration of 2 mmol / mg is investigated. The sulfonic cation exchanger was preliminarily obtained by the reaction of polycondensation of diphenyl oxide and furfural with further sulfonation to obtain functional ionogenic groups in order to increase the extraction efficiency. The obtained kinetic curves of the dependence of the degree of extraction of copper ions from solution on time were processed using the Boyd, Adamson, and Myers equation, which describes diffusion in a limited volume of solution. The kinetic parameters of the sorption process (effective diffusion coefficient, etc.) are calculated, and the results obtained are compared with the data for the traditionally used industrial cation exchanger, which is a copolymer of styrene and divinyl benzene. It has been established that the process of sorption of copper (II) ions in the sulfonic cation exchanger phase is of an intra diffusion nature and corresponds to second-order kinetic equations.

scholarly journals The Influence of Heavy Metal Ions on the Viability and Metabolic Enzyme Activity of the Marbled Crayfish Procambarus virginalis (Lyko, 2017)

2018 ◽  
Vol 70 ◽  
pp. 11-23 ◽  
Author(s):  
Oleg Marenkov ◽  
Mykola V. Prychepa ◽  
Julia Kovalchuk
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Enzyme Activity ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
Physiological State ◽  
Metabolic Enzyme ◽  
Nickel Ions ◽  
The Individual ◽  
Marbled Crayfish

In the experiment with marbled crayfishProcambarusvirginalis(Lyko, 2017), chronic effects of various concentrations of heavy metal ions on the physiological state and enzyme activity were investigated. The obtained results showed that among the investigated heavy metals nickel ions influenced the weight indexes and mortality of crustaceans the most negatively. According to the results of the research, significant changes were noted in the individual biochemical parameters of marbled crayfish under the influence of manganese, lead and nickel ions. The most significant changes in the activity of lactate dehydrogenase were detected in muscle tissues affected by manganese and nickel ions. A significant decrease in the activity of succinate dehydrogenase in muscle of marbled crayfish was determined after the action of heavy metal ions. Investigation of changes in the activity of alkaline phosphatase under the influence of the ions of manganese, lead and nickel has its own characteristics, which indicates certain violations in the tissues of cell membranes. Changes in the activity of enzymes were also reflected in the overall protein content. Changes in these parameters may indicate a rapid biochemical response of crustaceans to the toxic effects of heavy metals.

Use of pure diatomite for the sorption of heavy metal ions

2019 ◽  
Vol 17 (3) ◽  
pp. 189-192
Author(s):  
A. Nurgain
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Specific Surface ◽  
Heavy Metal Ions ◽  
Water Based ◽  
Degree Of Extraction ◽  
Purification Of Water

This article presents results according to purification of water based on diatomite sorbents.The results of the study of diatomite samples from two different regions shows thatadsorption capacity, specific surface and the degree of extraction of the sorbent of Republicof Kazakhstan higher than Iranian diatomite.

Hydroxyapatite modified with silica used for sorption of copper(II)

2009 ◽  
Vol 63 (5) ◽  
Author(s):  
Erzsébet-Sára Bogya ◽  
Réka Barabás ◽  
Alexandra Csavdári ◽  
Valentina Dejeu ◽  
Ioan Bâldea
Keyword(s):  
Copper Ions ◽  
Copper Ion ◽  
Reaction Medium ◽  
Kinetic Studies ◽  
Sorption Process ◽  
Silica Content ◽  
Ion Concentration ◽  
X Ray Diffraction ◽  
Structural Modifications ◽  
Preparation Phase

AbstractThis paper aims to increase the sorption capacity of hydroxyapatite and to find the best apatite-based material for metal ions sorption. The sorption process of copper ions from water solutions by HAP and structurally modified HAP was carried out in this work. Structural modifications of HAP were realized in the preparation phase by an addition of sodium silica into the reaction medium. The prepared materials were characterized by physical-chemical methods: IR, electron-microscopy and X-ray diffraction. The composites characterized were tested in kinetic studies regarding ion exchange and adsorption of Cu2+. It was revealed that the silica content, particle size and initial copper ion concentration influence the process rate.

scholarly journals Properties of Cobalt- and Nickel-Doped Zif-8 Framework Materials and Their Application in Heavy-Metal Removal from Wastewater

Nanomaterials ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 1636
Author(s):  
Bowen Shen ◽  
Bixuan Wang ◽  
Liying Zhu ◽  
Ling Jiang
Keyword(s):  
Heavy Metal ◽  
Metal Removal ◽  
Copper Ions ◽  
Heavy Metal Removal ◽  
Nickel Ions ◽  
Cobalt Ions ◽  
Framework Materials ◽  
Metal Treatment ◽  
Dichromate Ions ◽  
Cobalt And Nickel

Heterometallic zeolite imidazole framework materials (ZIF) exhibit highly attractive properties and have drawn increased attention. In this study, a petal-like zinc based ZIF-8 crystal and materials doped with cobalt and nickel ions were efficiently prepared in an aqueous solution at room temperature. It was observed that doped cobalt and nickel had obviously different effects on the morphology of ZIF-8. Cobalt ions were beneficial for the formation of ZIF-8, while addition of nickel ions tended to destroy the original configuration. Then we compared the absorption ability for metal ions between petal-like ZIF-8 and its doped derivatives with anion dichromate ions (Cr2O72−) and cation copper ions (Cu2+) as the absorbates. Results indicated that saturated adsorption capacities of Co@ZIF-8 and Ni@ZIF-8 for Cr2O72− reach 43.00 and 51.60 mg/g, while they are 1191.67 and 1066.67 mg/g for Cu2+, respectively, which are much higher than the original ZIF-8 materials. Furthermore, both the heterometallic ZIF-8 materials show fast adsorption kinetics to reach adsorption equilibrium. Therefore, petal-like ZIF-8 with doped ions can be produced through a facile method and can be an excellent candidate for further applications in heavy-metal treatment.

The Adsorption of Copper Ions by Sodium Alginate Immobilized Bacillus Subtilis Body and Purify Copper of Mine Wastewater

2011 ◽  
Vol 356-360 ◽  
pp. 1469-1474
Author(s):  
Jun Jing Guo ◽  
Wen Bin Chen
Keyword(s):  
Bacillus Subtilis ◽  
Aqueous Solutions ◽  
Sodium Alginate ◽  
Metal Ion ◽  
Copper Ions ◽  
Orthogonal Experiment ◽  
Correlation Coefficients ◽  
Sorption Process ◽  
Mine Wastewater ◽  
Bacillus Subtilus

In this study, calcium alginate immobilized bacillus subtilis body was used as an adsorbent for the aim of adsorpting Cu(Ⅱ) ions form the aqueous solutions, On sutiable condition, this study use purely bacteria eliminate other bacteria come in life-form bacteria .Through the orthogonal experiment obtains the optimum condition of sodium alginate fossilization bacillus subtilus pellet to the Cu(Ⅱ) adsorption, The biosorption efficiency was strongly influenced by the pH and the initial concentration ofthe Cu(Ⅱ) aqueous solutions. We also discusses the influence of single factor to the sodium alginate fossilization bacillus subtilus pellet to the Cu(Ⅱ) adsorption ,which included pH, contact time, temperature, initial metal ion concentrations and ionic strength in the adsorption process. The adsorption of the adsorbent on Cu(Ⅱ) is related to its concentration . From the research,we know the maximum adsorption rate to the Cu(Ⅱ) is about 83.2%. Using different model to analyse data. The sorption process follows pseudo-second-order kinetics very well,and the correlation coefficients R all reached to 0.9, and the rate constant of this kinetics model for the adsorption processes, k2, increased with the increasing temperatures. The isothermal data could be well described by the Langmuir adsorption isothermal equations．The experimental results showed that heavy metals could be eficciently accumulated by the immobilized bacteria.

Adsorption of CuCl2 on Mg-Al HTlc: Effect of EDTA and Addition Sequences

2012 ◽  
Vol 573-574 ◽  
pp. 150-154
Author(s):  
Yun Bo Zang ◽  
Nai Ying Wu
Keyword(s):  
Aqueous Solutions ◽  
Sorption Capacity ◽  
Contact Time ◽  
Room Temperature ◽  
Copper Ions ◽  
Sorption Process ◽  
Langmuir Model ◽  
Maximum Sorption Capacity ◽  
Maximum Sorption ◽  
Pseudo Second Order

In this study, removal of copper ions from aqueous solutions by synthetic Mg-Al-HTlc was investigated as a function of contact time, EDTA and addition sequences at room temperature. It is found that HTlc could reduced copper ions concentration effectively. The kinetics closely fit pseudo-second order kinetics with necessary time 9 h to reach equilibrium. The sorption process followed langmuir model. The maximum sorption capacity calculated was found to be 39.4 mg/g. The presence of EDTA and addition sequences could affect sorption of Cu(II) onto HTlc.

Adsorption Removal of Copper and Nickel Ions from Wastewater by Ammonia Modified Cotton Stalks

2014 ◽  
Vol 955-959 ◽  
pp. 2440-2443 ◽  
Author(s):  
Jing Li ◽  
Dong Mei Jia ◽  
Chang Hai Li ◽  
Bao Qing Yu
Keyword(s):  
Copper Ions ◽  
Batch Adsorption ◽  
Order Kinetic ◽  
Optimum Conditions ◽  
Nickel Ions ◽  
Adsorption Removal ◽  
Cotton Stalks ◽  
Order Kinetic Model ◽  
Pseudo Second Order ◽  
Adsorbent Dose

The ammonia modified cotton stalks (CS) were utilized to adsorb the Ni2+and Cu2+ions from wastewaters, and the effect parameters (i.e. pH, contact time, adsorbent dose, and temperature) were also investigated by batch adsorption experiments. The maximum uptake was attained, i.e., 99.4% and 98.8%, respectively, for nickel and copper ions, under the optimum conditions (adsorbent dose: 10 g/L; pH: 6.0 (Ni2+), 5.0 (Cu2+); t: 75min; T: 20 °C) when the initial concentration of heavy metal ions was 20 mg/L. The adsorption process of nickel and copper ions on ammonia modified CS was well described by the pseudo-second-order kinetic model.

scholarly journals Galvanic Production Waste Water Treatment with Electro/coagulation Sludge in Terms of Nickel and Copper Ions

2013 ◽  
Author(s):  
Keyword(s):  
Waste Water ◽  
Water Treatment ◽  
Copper Ions ◽  
Waste Water Treatment ◽  
Waste Waters ◽  
Chemical Cleaning ◽  
Nickel Ions ◽  
Galvanic Production ◽  
Soluble Aluminum ◽  
Electro Coagulation

A possibility of nickel ions and copper ions recovery from galvanic waste waters with electro-coagulation sludge that is formed in the process of electro/chemical cleaning of galvanic drainage pipes with the use of soluble aluminum anodes has been demonstrated. Nickel ions recovery from the galvanic waste water in case of the optimal proportion of the sludge has reached at least 55 %.

scholarly journals Nickel Sorption onto Chitosan - Silica Hybrid Aerogel from Aqueous Solution

2021 ◽  
Vol 18 (9) ◽  
Author(s):  
Kelechi EBISIKE ◽  
Afamefuna Elvis OKORONKWO ◽  
Kenneth Kanayo ALANEME
Keyword(s):  
Aqueous Solution ◽  
Hydrochloric Acid ◽  
Agricultural Waste ◽  
Sorption Process ◽  
Ion Concentration ◽  
Nickel Ion ◽  
Nickel Ions ◽  
Sorption System ◽  
Silica Hybrid ◽  
Hybrid Aerogel

The utilization and efficiency of agricultural waste-derived chitosan-silica hybrid aerogel “(CS)hA” on nickel removal from aqueous solution was examined and optimum parameters for pH, contact time, and initial ion concentration were determined during batch sorption system studies. Metal recovery was performed on the adsorbent using separately dilute concentrations of hydrochloric acid, acetic acid, ammonia, and sodium hydroxide solutions as eluents. The results generated were analyzed from kinetic and isotherm studies. The maximum Ni2+ adsorption of 99.78 % was established at 60 min and pH 3 in this study. The batch studies revealed that the percentage of nickel ion removal by the adsorbent decreased along with an increase in the initial Ni2+ ions concentration. The pseudo-second-order, the best fit of the kinetic model, has the values of its correlation coefficient “R2” ranging from 0.9 to 1, whereas the Langmuir model which had the maximum monolayer adsorption capacity of 85.84 mg g-1, was the best isotherm in interpreting the sorption process and the calculated separation factor was higher than 0 but less than 1. Dilute hydrochloric acid (0.1 M) was the best eluent in removing bound nickel ions (55.63 %) from (CS)hA.

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