Removal of some heavy metals from inorganic industrial wastewaters by ion exchange method

Moosavirad, S. M.; Sarikhani, Ramin; Shahsavani, Ensieh; Mohammadi, Sayed Zia

doi:10.3103/s1063455x15040074

Cited by 37 publications

(16 citation statements)

References 32 publications

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“…The maximum permitted concentration limit for Cr(VI) for drinking waters that is recommended by the Environmental Protection Agency (EPA) is 0.05 mg/L. Several techniques, such as membrane process, electrochemical precipitation, electrodialysis, ultrafiltration, reverse osmosis, and ion exchange, are possible to remove harmful metals from the aquatic medium (Moosavirad et al 2015;Pshinko et al 2014). But, these methods are inadequate or costly when Cr(VI) is present in the wastewater at a low concentration.…”

Section: Introductionmentioning

confidence: 99%

Comparative study of Cr(VI) removal by bio-waste adsorbents: equilibrium, kinetics, and thermodynamic

Parlayıcı

Pehlivan

2019

J Anal Sci Technol

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The green adsorbents were prepared by using cranberry (Cornus mas) kernel shell (CKS), rosehip (Rosa canina) seed shell (RSS), and banana (Musa cavendishii) peel (BP) and were proved in removing Cr(VI). Several parameters to remove Cr(VI) such as pH, adsorbent dosage, contact time, initial Cr(VI) ions concentration, and temperature were tested. The functional groups in the matrix of CKS, RSS, and BP were detected by FT-IR for raw biomasses together with Cr(VI). The equilibrium results were inspected using four different isotherm models, with a better fitting to the Langmuir model. The maximum adsorption quantities for Cr(VI) ions were 10.42, 15.17, and 6.81 mg/g for BP, RSS, and CKS, respectively. The interrelationship coefficients were expressed by a pseudo-second-order kinetic model, assuming that the overall Cr(VI) adsorption rate is limited by the rate of adsorbate diffusion in the pores of biomass.

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Section: Introductionmentioning

confidence: 99%

Comparative study of Cr(VI) removal by bio-waste adsorbents: equilibrium, kinetics, and thermodynamic

Parlayıcı

Pehlivan

2019

J Anal Sci Technol

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“…Various technologies were proposed to decrease the heavy metal concentration in wastewater, such as ion exchange, adsorption, chemical precipitation and membrane separation 3 4 5 6 7 . Among them, adsorption was considered as a flexible, convenient and low cost technology.…”

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confidence: 99%

Highly efficient removal of lead and cadmium during wastewater irrigation using a polyethylenimine-grafted gelatin sponge

Zhou

Huang

et al. 2016

Sci Rep

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Wastewater irrigation is a very important resource for heavy metal pollution in soil and then accumulation in vegetable crops. In this study, a polyethylenimine (PEI)-grafted gelatin sponge was prepared to effectively adsorb heavy metals during wastewater irrigation. Based on the strong water adsorption ability, wastewater remained in the PEI-grafted gelatin sponge for a sufficient time for the heavy metals to interact with the sorbents. The binding capacities of Pb(II) ions and Cd(II) ions on the PEI-grafted gelatin sponge were 66 mg g −1 and 65 mg g −1 , which were much more than those on the gelatin sponge (9.75 mg g −1 and 9.35 mg g −1 ). Subsequently, the PEI-grafted gelatin sponge was spread on the surface of soil planted with garlic and then sprayed with synthetic wastewater. The concentrations of cadmium and lead in the garlic leaves were 1.59 mg kg −1 and 5.69 mg kg −1 , respectively, which were much lower than those (15.78 mg kg −1 and 27.98 mg kg −1 ) without the gelatin sponge, and the removal efficiencies were 89.9% and 79.7%. The PEI-grafting gelatin sponge could effectively remove heavy metals during wastewater irrigation, which improved the soil environment and reduced human exposure to heavy metals.Water shortages in the world have led to the reuse of municipal wastewater for irrigation. In many developing countries, wastewater irrigation is a very important way in agricultural production, however, it would increase human exposure to the pollutants. Amin et al. found that vegetables grown in the Mardan District of Pakistan were highly polluted by heavy metals due to the irrigation of untreated wastewater, which would lead to serious health risks for local people 1 . Jiang et al. reported that agricultural soil was potentially at risk of heavy metal accumulation from irrigation water, which was higher than those from atmospheric deposition and fertilizer 2 . Thus, decrease the contaminants in wastewater system was an important way to avoid their entrance into agricultural soil and then food chain.Various technologies were proposed to decrease the heavy metal concentration in wastewater, such as ion exchange, adsorption, chemical precipitation and membrane separation [3][4][5][6][7] . Among them, adsorption was considered as a flexible, convenient and low cost technology. After simple desorption, the adsorbents are regenerated for multiple uses and it still has a high efficiency 4,8 . Therefore, it was a preferred process for wastewater pollution control. However, developing a specific sorbent with high adsorption capacity is an interesting yet still challenging task. Currently, carbon materials (such as carbon foam, carbon nanotubes, graphene and activated carbon) 9-11 , nanosized metal oxides (such as ferric oxides, manganese oxides and zinc oxides) 4 , chitosan composites 12-13 and low-cost adsorbents (such as zeolites and weathered coal) [14][15][16] are all considered in the literatures to be promising choices for the heavy metal pollution control. Unfortunately, it is impossible to recover t...

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“…Different chemicals were used to evacuate particular chemical/ion from the wastewater. For example, ion exchange resins were used to recover salts in terms of sodium, potassium, calcium, magnesium, and heavy metals such as zinc, copper, lead, nickel, and cadmium from the respective wastewater (Millar et al, 2015; Moosavirad et al, 2015). The concept of recovery of salts and heavy metals from the wastewater by using ion‐based reaction involves the application of hydrogen containing resins that converts the dissolved salts into respective acids and the application of strong base that is used to recover salts by neutralization reaction processes (Brandt et al, 2017).…”

Section: Treatment Technologies Available For Saline Wastewatermentioning

confidence: 99%

“…The concept of recovery of salts and heavy metals from the wastewater by using ion‐based reaction involves the application of hydrogen containing resins that converts the dissolved salts into respective acids and the application of strong base that is used to recover salts by neutralization reaction processes (Brandt et al, 2017). Similarly, based upon the application of selective resin, ion exchange method can be selective method for the removal of toxic chemicals from wastewater (Moosavirad et al, 2015). Further, enhanced removal of dissolved organic matter and organic compounds can be achieved by using magnetically enhanced ion exchange resins (Boyer, 2015).…”

Section: Treatment Technologies Available For Saline Wastewatermentioning

confidence: 99%

Current available treatment technologies for saline wastewater and land‐based treatment as an emerging environment‐friendly technology: A review

Marathe

Singh

Raghunathan

et al. 2021

Water Environment Research

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Different industrial activities such as agro‐food processing and manufacturing, leather manufacturing, and paper and pulp production generate highly saline wastewater. Direct discharge of saline wastewater has resulted in pollution of waterbodies by very high magnitudes. Consequently, an enormous number of pollutants such as heavy metals, salts, and organic matter are also released into the environment threatening the survival of human and biota. Saline wastewater also has significant effects on survival of plants, agricultural activities, and groundwater systems. Several treatments and disposal technologies are available for saline wastewater, but the selection of the most appropriate treatment and disposal technology still remains a major challenge with respect to the economic or technical constraints. Considering the sustainable management of saline wastewater, the present review is an attempt to compile the existing and emerging technologies for the treatment of saline wastewater. Among all the individual and hybrid technologies, land‐based treatment systems are proven to be the most efficient technologies considering the energy demands, economic, and treatment efficiencies. Likewise, new and sustainable technologies are the need of hour integrating both the treatment and management and the resource recovery factors along with the ultimate goal of the protection in terms of human health and environmental aspect. Practitioner points Physico‐chemical treatment technologies for saline wastewater. Combined/Hybrid technologies for the treatment of saline wastewater. Land‐based treatments as the environment friendly and sustainable method for saline wastewater treatment and disposal. Role of phytoremediation in land‐based treatment.

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Removal of some heavy metals from inorganic industrial wastewaters by ion exchange method

Abstract: S . Z . M o h a m m a d i , S . M . M o o s a v i r a d

Cited by 37 publications

References 32 publications

Comparative study of Cr(VI) removal by bio-waste adsorbents: equilibrium, kinetics, and thermodynamic

Comparative study of Cr(VI) removal by bio-waste adsorbents: equilibrium, kinetics, and thermodynamic

Highly efficient removal of lead and cadmium during wastewater irrigation using a polyethylenimine-grafted gelatin sponge

Current available treatment technologies for saline wastewater and land‐based treatment as an emerging environment‐friendly technology: A review

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