Electrodialysis for fluoride and nitrate removal from synthesized photovoltaic industry wastewater

Belkada, Fadila Djouadi; Kitous, O.; Drouiche, Nadjib; Aoudj, S.; Bouchelaghem, Ouahiba; Abdi, N.; Grib, H.; Mameri, N.

doi:10.1016/j.seppur.2018.04.068

Cited by 175 publications

(16 citation statements)

References 21 publications

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“…Adding a commonly used adsorbent such as powdered activated carbon (PAC) to MBR can effectively control the development of membrane fouling, slow the rate of increase of TMP, and prolong the membrane operating cycle [149]. PAC has high adsorption capacity and can absorb dissolved organic matter, EPS, microparticles, etc.…”

Section: Changing the Properties Of The Feed Watermentioning

confidence: 99%

A Review on the Mechanism, Impacts and Control Methods of Membrane Fouling in MBR System

et al. 2020

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Compared with the traditional activated sludge process, a membrane bioreactor (MBR) has many advantages, such as good effluent quality, small floor space, low residual sludge yield and easy automatic control. It has a promising prospect in wastewater treatment and reuse. However, membrane fouling is the biggest obstacle to the wide application of MBR. This paper aims at summarizing the new research progress of membrane fouling mechanism, control, prediction and detection in the MBR systems. Classification, mechanism, influencing factors and control of membrane fouling, membrane life prediction and online monitoring of membrane fouling are discussed. The research trends of relevant research areas in MBR membrane fouling are prospected.

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Section: Changing the Properties Of The Feed Watermentioning

confidence: 99%

A Review on the Mechanism, Impacts and Control Methods of Membrane Fouling in MBR System

et al. 2020

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“…[ 11 ] Other problems include the formation of chemical waste byproduct streams from the use of any regeneration chemicals required or the production of waste streams containing concentrated nitrate that will require further treatment or disposal. [ 17,18 ] Compared with these technologies, electrochemical nitrate reduction employs electrons as green reductants, and no hazardous residues remain after operation. Its small installation footprint and mild operation conditions make it a promising decentralized denitrification technique.…”

Section: Introductionmentioning

confidence: 99%

Restoring the Nitrogen Cycle by Electrochemical Reduction of Nitrate: Progress and Prospects

et al. 2020

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The increasing amount of anthropogenic nitrogen has resulted in alarming levels of nitrate in bodies of water and caused a cascade of damage to the environment and human health. Electrochemical nitrate reduction is an efficient strategy ancillary to biological nitrogen cycle management, which utilizes electrons as green reductants and rebalances the N 2 cycle. In this review, the fundamental principles and implementation of electrochemical nitrate reduction are described to lay the foundation for the eventual large-scale application in the remediation of nitrate-laden wastewaters. Factors that influence the activity and selectivity of electrochemical nitrate reduction are also discussed. Moreover, electrolytic cell design and construction are discussed via a rational choice of critical components and assembly. Finally, a roadmap for the development of highly selective nitrate reduction catalysts is proposed. This review attempts to provide a practical strategy for electrochemical nitrogen cycle management and aims to stimulate future research for final implementation.

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“…Various physicochemical techniques, including chemical precipitation [6], a membrane process [7], oxidation [8], electrodialysis [9,10], constructed wetlands [11], and adsorption [12,13] have been employed as the route to eliminate nitrates and phosphates from aqueous systems. Among all of them, adsorption proved to be one of the most popular techniques because of its low cost, ease of operation, higher removal efficiency, and excellent reusability performance.…”

Section: Introductionmentioning

confidence: 99%

Comparative Adsorptive Removal of Phosphate and Nitrate from Wastewater Using Biochar-MgAl LDH Nanocomposites: Coexisting Anions Effect and Mechanistic Studies

et al. 2020

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In this study, date-palm biochar MgAl-augmented double-layered hydroxide (biochar–MgAl–LDH) nanocomposite was synthesized, characterized, and used for enhancing the removal of phosphate and nitrate pollutants from wastewater. The biochar–MgAl–LDH had higher selectivity and adsorption affinity towards phosphate compared to nitrate. The adsorption kinetics of both anions were better explained by the pseudo-first-order model with a faster removal rate to attain equilibrium in a shorter time, especially at lower initial phosphate-nitrate concentration. The maximum monolayer adsorption capacities of phosphate and nitrate by the non-linear Langmuir model were 177.97 mg/g and 28.06 mg/g, respectively. The coexistence of anions (Cl−, SO42−, NO3−, CO32− and HCO3−) negligibly affected the removal of phosphate due to its stronger bond on the nano-composites, while the presence of Cl− and PO43− reduced the nitrate removal attributed to the ions’ participation in the active adsorption sites on the surface of biochar–MgAl–LDH. The excellent adsorptive performance is the main synergetic influence of the MgAl–LDH incorporation into the biochar. The regeneration tests confirmed that the biochar–MgAl composite can be restored effortlessly and has the prospective to be reused after several subsequent adsorption-desorption cycles. The biochar-LDH further demonstrated capabilities for higher removal of phosphate and nitrate from real wastewater.

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Electrodialysis for fluoride and nitrate removal from synthesized photovoltaic industry wastewater

Cited by 175 publications

References 21 publications

A Review on the Mechanism, Impacts and Control Methods of Membrane Fouling in MBR System

A Review on the Mechanism, Impacts and Control Methods of Membrane Fouling in MBR System

Restoring the Nitrogen Cycle by Electrochemical Reduction of Nitrate: Progress and Prospects

Comparative Adsorptive Removal of Phosphate and Nitrate from Wastewater Using Biochar-MgAl LDH Nanocomposites: Coexisting Anions Effect and Mechanistic Studies

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