Application of reverse osmosis process associated with EDTA complexation for nickel and copper removal from wastewater

Silva, Jessica Rodrigues Pires da; Merçon, Fábio; Costa, Claudio Manoel; Benjo, Deborah Radoman

doi:10.1080/19443994.2015.1100554

Cited by 27 publications

(10 citation statements)

References 22 publications

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“…5, 6 Therefore, to secure the biota (plants, animals and ecological environment), many researchers focus on the treatments of metal polluted wastewater via different methods and processes including adsorption, chemical precipitation, and electrochemical methods. [7][8][9][10][11][12][13] Among all water treatment technologies, adsorption is presumed to be effective and easy to carry out. [14][15][16] In addition to this, novel and efficient adsorbents have been synthesized and applied in various elds of production and life.…”

Section: Introductionmentioning

confidence: 99%

Appraisal of Cu(ii) adsorption by graphene oxide and its modelling via artificial neural network

et al. 2019

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Section: Introductionmentioning

confidence: 99%

Appraisal of Cu(ii) adsorption by graphene oxide and its modelling via artificial neural network

et al. 2019

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“…The application of RO in the removal of heavy metals from wastewater is being investigated (Table 4). Low-pressure RO has been applied with a complexing agent to remove Ni(II) and Cu(II), and the removal efficiencies for both single and a mixture of ions achieved over 99% [98]. The complete removal of Ni(II) was obtained by employing the UF/RO hybrid system in the metal finishing industry [99].…”

Section: Reverse Osmosis In Heavy Metal Removal From Wastewatermentioning

confidence: 99%

Pressure-Driven Membrane Process: A Review of Advanced Technique for Heavy Metals Remediation

et al. 2021

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Pressure-driven processes have come a long way since they were introduced. These processes, namely Ultra-Filtration (UF), Nano-Filtration (NF), and Reverse-Osmosis (RO), aim to enhance the efficiency of wastewater treatment, thereby aiming at a cleaner production. Membranes may be polymeric, ceramic, metallic, or organo-mineral, and the filtration techniques differ in pore size from dense to porous membrane. The applied pressure varies according to the method used. These are being utilized in many exciting applications in, for example, the food industry, the pharmaceutical industry, and wastewater treatment. This paper attempts to comprehensively review the principle behind the different pressure-driven membrane technologies and their use in the removal of heavy metals from wastewater. The transport mechanism has been elaborated, which helps in the predictive modeling of the membrane system. Fouling of the membrane is perhaps the only barrier to the emergence of membrane technology and its full acceptance. However, with the use of innovative techniques of fabrication, this can be overcome. This review is concluded with perspective recommendations that can be incorporated by researchers worldwide as a new problem statement for their work.

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“…With the increasing concentration of toxic metals in wastewater and the stringent standards that determine the maximum concentration of heavy metals in wastewater, a great emphasis is placed on research into materials suitable for the cheap and efficient removal of heavy metals from wastewater. Several methods are known for removing toxic metals from water, such as ion exchange [ 8 ], chemical precipitation [ 4 ], membrane filtration [ 9 ], reverse osmosis [ 10 ], solvent extraction [ 11 ], electrochemical treatment [ 12 ], and adsorption [ 13 ]. The removal of metal ions by adsorption is of wide research interest, as it is a relatively cheap and easy-to-implement method [ 14 ].…”

Section: Introductionmentioning

confidence: 99%

Removal of Nickel from Aqueous Solutions by Natural Bentonites from Slovakia

et al. 2021

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In this study, the removal of nickel (Ni(II)) by adsorption from synthetically prepared solutions using natural bentonites (Lieskovec (L), Hliník nad Hronom (S), Jelšový Potok (JP), and Stará Kremnička (SK)) was investigated. All experiments were carried out under batch processing conditions, with the concentration of Ni(II), temperature, and time as the variables. The adsorption process was fast, approaching equilibrium within 30 min. The Langmuir maximum adsorption capacities of the four bentonite samples used were found to be 8.41, 12.24, 21.79, and 21.93 mg g–1, respectively. The results best fitted the pseudo-second-order kinetic model, with constant rates in a range of 0.0948–0.3153 g mg–1 min. The effect of temperature was investigated at temperatures of 20, 30, and 40 °C. Thermodynamic parameters, including standard enthalpy (ΔH0), Gibbs energy (ΔG0), and standard entropy (ΔS0), were calculated. The adsorption of Ni(II) by bentonite samples was an endothermic and spontaneous process. These results indicated that, of the bentonite samples used, the natural bentonites from JP and SK were most suitable for the removal of nickel from synthetically prepared solutions.

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Application of reverse osmosis process associated with EDTA complexation for nickel and copper removal from wastewater

Cited by 27 publications

References 22 publications

Appraisal of Cu(ii) adsorption by graphene oxide and its modelling via artificial neural network

Appraisal of Cu(ii) adsorption by graphene oxide and its modelling via artificial neural network

Pressure-Driven Membrane Process: A Review of Advanced Technique for Heavy Metals Remediation

Removal of Nickel from Aqueous Solutions by Natural Bentonites from Slovakia

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