Pilot-scale anoxic/aerobic biofilter system combined with chemical precipitation for tertiary treatment of wastewater

Son, Dong-Jin; Kim, Woo-Yeol; Jung, Bo-Rim; Chang, Duk; Hong, Kicheon

doi:10.1016/j.jwpe.2020.101224

Cited by 25 publications

(5 citation statements)

References 31 publications

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“…Various treatment approaches have been developed for the removal of heavy metals ion exchange [ 10 ], adsorption [ 11 , 12 ], chemical precipitation [ 13 , 14 ], membrane separation [ 15 , 16 ], flocculation-coagulation [ 17 ], flotation [ 18 ], and electrochemical methods [ 19 ]. Amongst all the treatments proposed, adsorption using sorbents is one of the most popular methods since the proper design of the adsorption process will produce high-quality treated effluents.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Biodegradable Poly(vinyl alcohol)-Chitosan/Cellulose Hydrogel Beads for Efficient Removal of Pb(II), Cd(II), Zn(II), and Co(II) from Water

Aljar

Rashdan

Almutawah

et al. 2023

Gels

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Globally, water contamination by heavy metals is a serious problem that affects the environment and human health. Adsorption is the most efficient way of water treatment for eliminating heavy metals. Various hydrogels have been prepared and used as adsorbents to remove heavy metals. By taking advantage of poly(vinyl alcohol) (PVA), chitosan (CS), cellulose (CE), and the process for physical crosslinking, we propose a simple method to prepare a PVA-CS/CE composite hydrogel adsorbent for the removal of Pb(II), Cd(II), Zn(II) and Co(II) from water. Structural analyses of the adsorbent were examined by Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy-energy dispersive X-ray (SEM-EDX) analysis, and X-ray diffraction (XRD). PVA-CS/CE hydrogel beads had a good spherical shape together with a robust structure and suitable functional groups for the adsorption of heavy metals. The effects of adsorption parameters such as pH, contact time, adsorbent dose, initial concentration of metal ions, and temperature on the adsorption capacity of PVA-CS/CE adsorbent were studied. The adsorption characteristics of PVA-CS/CE for heavy metals may be completely explained by pseudo-second-order adsorption and the Langmuir adsorption model. The removal efficiency of PVA-CS/CE adsorbent for Pb(II), Cd(II), Zn(II), and Co(II) was 99, 95, 92, and 84%, respectively, within 60 min. The heavy metal’s hydrated ionic radius may be crucial in determining the adsorption preference. After five consecutive adsorption–desorption cycles, the removal efficiency remained over 80%. As a result, the outstanding adsorption-desorption properties of PVA-CS/CE can potentially be extended to industrial wastewater for heavy metal ion removal.

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Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Biodegradable Poly(vinyl alcohol)-Chitosan/Cellulose Hydrogel Beads for Efficient Removal of Pb(II), Cd(II), Zn(II), and Co(II) from Water

Aljar

Rashdan

Almutawah

et al. 2023

Gels

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“…High variations of flow can influence the flux that a unit has to treat, dilution due to storm events can either reduce the load of compounds to be chemically removed (e.g. P) [55,56], or increase the load of solids due to a higher carryover from previous treatments (e.g. solids escape from settling tanks) [38,57].…”

Section: Insights From the Full-scale Trialsmentioning

confidence: 99%

Full-scale trials to achieve low total phosphorus in effluents from sewage treatment works

Alibardi

Vale

Fernández

2021

Journal of Water Process Engineering

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“…Chemical formation between precipifying agents and dissolved metal components causes transformation of ionic metals into insoluble particles. Cationic metals are frequently removed using chemical compounds [12]. It can also eliminate living anions and molecules in some instances.…”

Section: Chemical Precipitationmentioning

confidence: 99%

A Systematic Literature Review of Ceramic Membranes Applications in Water Treatment

Amin¹,

Rashad

Mansour

et al. 2021

Egypt. J. Chem.

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Ceramic membranes can be described as fine sieves used for separation. They are made from inorganic ceramic materials (zirconia, silicon carbide, alumina, titania, etc.), usually consisting of several layers of one or more ceramic materials. Chemical addition, coagulation, flocculation, sedimentation, filtration, and disinfection, commonly with chlorine, are all common methods for treating raw water for municipal drinking water supplies. Many attempts have been made to produce ceramic membranes with superior properties by varying used raw materials for the application of water treatment. Ceramic membrane exhibits good applications in microfiltration and ultrafiltration process for water treatment, which has many advantages like recycling, volume reducing of household wastewater, safe drinking water in remote areas and farms, help in limited drinking water production in developing nations or during humanitarian crises. Microfiltration / ultrafiltration ceramic membranes can be used to remove water turbidity, microorganisms, salinity, organic matter, and disinfection byproduct precursors. However, the hydrophilic surface of membranes can improve antifouling properties. This article reviews a summary on the traditional techniques and different uses of ceramic membranes in water treatment, characteristics of ceramic membranes and different manufacturing technologies of ceramic based membranes.

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Pilot-scale anoxic/aerobic biofilter system combined with chemical precipitation for tertiary treatment of wastewater

Cited by 25 publications

References 31 publications

Synthesis and Characterization of Biodegradable Poly(vinyl alcohol)-Chitosan/Cellulose Hydrogel Beads for Efficient Removal of Pb(II), Cd(II), Zn(II), and Co(II) from Water

Synthesis and Characterization of Biodegradable Poly(vinyl alcohol)-Chitosan/Cellulose Hydrogel Beads for Efficient Removal of Pb(II), Cd(II), Zn(II), and Co(II) from Water

Full-scale trials to achieve low total phosphorus in effluents from sewage treatment works

A Systematic Literature Review of Ceramic Membranes Applications in Water Treatment

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