Adsorption Study for the Removal of Nitrate from Water Using Local Clay

Battas, A.; Gaidoumi, Abdelali El; Ksakas, A.; Kherbeche, Abdelhak

doi:10.1155/2019/9529618

Cited by 73 publications

(31 citation statements)

References 32 publications

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“…The pH is an important parameter that affects the adsorption process (Battas et al, 2019). Figure 5a shows that the adsorption capacity increases until climax and is followed by a decrease with an increase in pH value for all adsorbents.…”

Section: Effect Of Phmentioning

confidence: 99%

Plasticized magnetic starch-based Fe3O4 clay polymer nanocomposites for phosphate adsorption from aqueous solution

Atnafu

Leta

2021

Heliyon

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Plastics contribute a magnificent role to modern civilization, but the waste becomes a huge burden to ecology and remains intact for a thousand years. Hence, the recent movement is shifted to biodegradable plastic. In this study, an attempt was made to introduce an added value to the environment where the bio-plasticized materials were used for phosphate removal. A G-plasticized magnetic starch-based Fe 3 O 4 clay polymer nanocomposite (PNC) was synthesized to remove phosphate from the aqueous solution. It was synthesized from activated carbon (AC), coated iron oxide nanoparticles (CIONP), nanoclay (NC), and glycerol (G) as a plasticizer. The synthesized adsorbents were characterized with UV-Vis, SEM, XRD, and FTIR. The PNC and constituent (CIONP) were tested for phosphate removal through batch adsorption experiments. The adsorption capacity increases with increasing the adsorbent dose and decreases with an increase in phosphate concentration. The synthesized PNC effectively raised the constituent optimum phosphate ion adsorption pH from acidic (pH ¼ 3) to slightly acidic (pH ¼ 6). At the optimal pH, the CIONP and PNC maximum phosphate adsorption capacity (MPAC) was 3.12 and 2.31 mg P/g, respectively. In addition, the phosphate removal efficiency of PNC (45-95% at pH 6) was comparable to CIONP (58-97% at pH 3) under an initial 2-100 mg P/L. The adsorbents adsorption kinetics and isotherm study best described by the pseudo-second-order and Freundlich model, in turn. The SEM images support the conclusion, in which the PNC shows a heterogenous porous surface. Therefore, the adsorption mechanisms were mainly described by multilayer and chemical adsorption, such as electrostatic and ion exchange. It can be concluded that there is a positive synergistic effect between the biopolymer (starch) and nanomaterials that form the PNC. This study results propose the multiple added values of modified bio-plasticized material (with adsorbent) for environmental (phosphate) remediation.

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Section: Effect Of Phmentioning

confidence: 99%

Plasticized magnetic starch-based Fe3O4 clay polymer nanocomposites for phosphate adsorption from aqueous solution

Atnafu

Leta

2021

Heliyon

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“…Therefore, additional water purification methods are needed. Methods based on adsorption can be suitable for this purpose, as they are capable of eliminating both organic and inorganic pollutants from water also outside the growing season (Battas et al, 2019). Adsorption-based water purification methods have been shown to be effective in the treatment of municipal wastewaters and urban and agricultural runoff (Singh et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Nitrogen Recovery from Clear-Cut Forest Runoff Using Biochar: Adsorption–Desorption Dynamics Affected by Water Nitrogen Concentration

Lafdani

Laurén

Cvetkovic

et al. 2021

Water Air Soil Pollut

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Forest regeneration operations increase the concentration of nitrogen (N) in watercourses especially outside the growing season when traditional biological water protection methods are inefficient. Biochar adsorption-based water treatment could be a solution for nutrient retention. We studied the total nitrogen (TN) and nitrate–nitrogen (NO3−–N) adsorption–desorption properties of spruce and birch biochar. The adsorption test was performed under four different initial concentrations of TN (1, 2, 3, and 4 mg L−1) using forest runoff water collected from ditch drains of boreal harvested peatland. The results showed that the TN adsorption amount increased linearly from the lowest to the highest concentration. The maximum adsorption capacity was 2.4 and 3.2 times greater in the highest concentration (4 mg L−1) compared to the lowest concentration (1 mg L−1) in spruce and birch biochar, respectively. The NO3−–N adsorption amount of birch biochar increased linearly from 0 to 0.15 mg NO3−–N g biochar−1 when the initial concentration of NO3−–N increased from 0.2 to 1.4 mg L−1. However, in spruce biochar, the initial concentration did not affect NO3−–N adsorption amount. The results indicate that concentration significantly affects the biochar’s capacity to adsorb N from water. The desorption test was performed by adding biochar extracted from the adsorption test into the forest runoff water with low TN concentration (0.2 or 0.35 mg L−1). The desorption results showed that desorption was negligibly small, and it was dependent on the TN concentration for birch biochar. Therefore, biochar can be a complementary method supporting water purification in peatland areas.

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“…It is reported that the negative value of ΔG o indicates spontaneity of adsorption (Shin et al 2004;Mayer et al 2016;Monfet et al 2017;Ruzhitskaya & Gogina 2017;Xiao et al 2017;Zhang et al 2017;Liu et al 2018;Meena 2018;Prashantha Kumar et al 2018;Berkessa et al 2019;Kim et al 2019;Bacelo et al 2020). The value of ΔG o , which increases (Deng & Shi 2015;Mor et al 2016;Aljeboree et al 2017;Yang et al 2017;Banu et al 2019;Gaidoumi et al 2019 (Chatterjee & Woo 2009;Rezaei Kalantary et al 2016;Song et al 2016;Liu et al 2019aLiu et al , 2019bZhang et al 2019), indicates that the adsorption process is favorable at low and high temperatures, respectively. A positive ΔH o value shows that the process of adsorption is endothermic (Rajeswari et al 2016;Rezaei Kalantary et al 2016;Song et al 2016).…”

Section: Adsorption Thermodynamicsmentioning

confidence: 98%

“…Clay and zeolite have also been explored as adsorbents due to their high surface area. Zeolites can be used at the primary treatment exit as an alternative to the biological removal process in a cost-effective way (Battas et al 2019). The experiment conducted using natural zeolites and hollow fiber membrane contactors for ammonia removal and recovery showed efficiency greater than 98% (Sancho et al 2017).…”

Section: Precipitationmentioning

confidence: 99%

A comprehensive review on nitrate and phosphate removal and recovery from aqueous solutions by adsorption

Gizaw

Zewge

Kumar

et al. 2021

Journal of Water Supply: Research and Technology-Aqua

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Nitrogen and phosphorus removal and recovery are considered as one of the interventions to control water bodies' eutrophication by application of various methods. Adsorption is an effective method for phosphate and nitrate removal from wastewater. It is efficient, quick, easy, low-cost and environmentally friendly. Even though different adsorbents have been developed with excellent properties, lack of compilation, lack of consistency in operational conditions, and lack of other important parameters used for direct comparison and practical use selection were observed. The first aim of this review is to provide facts and figures on novel adsorbents used for nitrate, phosphate, and simultaneous nitrate-phosphate removal and recovery. Second, various adsorbents applied for nitrate and phosphate removal have been compared in terms of the number of cycles that the adsorbent used; retained removal capacity (RR); the removal capacity of the adsorbent considering the threshold limit settled by EU and EPA as equilibrium concentration for phosphate (q0.1) and nitrate (q10); and time to reach the equilibrium capacity (t90). Third, based on the afore-mentioned criteria, the best adsorbents is proposed and this is the key novelty of this review work. Moreover, future aspects and challenges regarding nitrate and phosphate removal and recovery are presented.

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Adsorption Study for the Removal of Nitrate from Water Using Local Clay

Cited by 73 publications

References 32 publications

Plasticized magnetic starch-based Fe3O4 clay polymer nanocomposites for phosphate adsorption from aqueous solution

Plasticized magnetic starch-based Fe3O4 clay polymer nanocomposites for phosphate adsorption from aqueous solution

Nitrogen Recovery from Clear-Cut Forest Runoff Using Biochar: Adsorption–Desorption Dynamics Affected by Water Nitrogen Concentration

A comprehensive review on nitrate and phosphate removal and recovery from aqueous solutions by adsorption

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