Removal of phosphonates from synthetic and industrial wastewater with reusable magnetic adsorbent particles

Rott, Eduard; Nouri, Mahdi; Meyer, Carsten; Minke, Ralf; Schneider, Michael; Mandel, Karl; Drenkova-Tuhtan, Asya

doi:10.1016/j.watres.2018.08.067

Cited by 87 publications

(20 citation statements)

References 30 publications

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“…Adsorption is a technology that has often been reported for achieving very low concentrations of o-P. Several studies in literature report on consistently reaching o-P concentrations less than 0.1 mg P/L and even lower than 0.01 mg P/L (Awual et al., 2014; Genz et al., 2004; Luo et al., 2016; Midorikawa et al., 2008; Sengupta and Pandit, 2011; Zhu and Jyo, 2005). One of the limitations of adsorption is its ability to only remove dissolved P. This usually implies o-P (henceforth referred to as phosphate) however studies also show the removal of organic phosphates like phosphonates using adsorption (Boels et al., 2012; Kumar et al., 2010; Rott et al., 2018). Pretreatment by advanced oxidation processes can also be an option to convert organic forms of P into phosphate which can then be targeted by adsorption (Mayer et al., 2013).…”

Section: Introductionmentioning

confidence: 99%

Adsorption as a technology to achieve ultra-low concentrations of phosphate: Research gaps and economic analysis

Korving²,

et al. 2019

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Eutrophication and the resulting formation of harmful algal blooms (HAB) causes huge economic and environmental damages. Phosphorus (P) from sewage effluent and agricultural run-off has been identified as a major cause for eutrophication. Phosphorous concentrations greater than 100 μg P/L are usually considered high enough to cause eutrophication. The strictest regulations however aim to restrict the concentration below 10 μg P/L. Orthophosphate (or phosphate) is the bioavailable form of phosphorus. Adsorption is often suggested as technology to reduce phosphate to concentrations less than 100 and even 10 μg P/L with the advantages of a low-footprint, minimal waste generation and the option to recover the phosphate. Although many studies report on phosphate adsorption, there is insufficient information regarding parameters that are necessary to evaluate its application on a large scale. This review discusses the main parameters that affect the economics of phosphate adsorption and highlights the research gaps. A scenario and sensitivity analysis shows the importance of adsorbent regeneration and reuse. The cost of phosphate adsorption using reusable porous metal oxide is in the range of $ 100 to 200/Kg P for reducing the phosphate to ultra-low concentrations. Future research needs to focus on adsorption capacity at low phosphate concentrations, regeneration and reuse of both the adsorbent and the regeneration liquid.

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Section: Introductionmentioning

confidence: 99%

Adsorption as a technology to achieve ultra-low concentrations of phosphate: Research gaps and economic analysis

Korving²,

et al. 2019

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“…At this sampling, the wastewater temperature (8.8 • C) was the lowest of all samplings (all other wastewater temperatures were >11 • C). The adsorption of phosphonates onto metal (hydr)oxides is enhanced at elevated temperatures and attenuated at lower temperatures [33]. Assuming the elimination of phosphonates in WWTPs is mainly attributed to adsorption on activated sludge and on metal (hydr)oxide flocks, this observation appears plausible.…”

Section: Secondary Clarificationmentioning

confidence: 97%

Behavior of PBTC, HEDP, and Aminophosphonates in the Process of Wastewater Treatment

Rott

Happel

Armbruster

et al. 2019

Water

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Ten times at intervals of 1–2 months, individual treatment stages of two wastewater treatment plants (WWTPs) were analyzed for the five quantitatively most widely used phosphonates. The total dissolved concentration of the investigated phosphonates in the influents was between 131 µg/L and 384 µg/L. The nitrogen-free phosphonates 2-phosphonobutane-1,2,4-tricarboxylic acid (PBTC) and 1-hydroxyethylidene(1,1-diphosphonic acid) (HEDP) accounted for an average proportion of 83–85%. Diethylenetriaminepenta(methylene phosphonic acid) (DTPMP) contributed with 13–14%, whereas aminotris(methylphosphonic acid) (ATMP) (≤15 µg/L) and ethylenediaminetetra(methylene phosphonic acid) (EDTMP) (≤11 µg/L) contents detected in the WWTP influents were comparatively low. The application of new analytical methods allowed the quantification of phosphonates in the solid fraction of the WWTP influents for the first time. High loads of phosphonates were determined (223–2555 mg/kg), indicating that 20%–80% of the phosphonates are present in the adsorbed state. The removal of total dissolved phosphonate by secondary clarification was between 69.7% and 92.4% (medians: 90.7% and 87.7%). In both WWTPs, HEDP (medians: 89.2% and 86.4%) was slightly better eliminated than PBTC (medians: 87.2% and 82.5%). In the sand filtration stage of a WWTP, the average removal was not further improved. In contrast, an additional removal of dissolved phosphonates could be achieved by activated carbon treatment (median: 96.4%). The proportion of phosphonate-P in the dissolved unreactive phosphorus fraction was consistently between 10% and 40% throughout all treatment stages.

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“…An alternative to the methods described above is the sorption of phosphorus onto diverse materials, including bauxite (Altundogan & Tumen, 2001) and magnetite microparticles (Drenkova-Tuhtan et al, 2017;Xiao, Liu, Zhang, & Zheng, 2017). Adsorbent magnetic particles have also been successfully tested over numerous regeneration cycles for the removal of nonorthophosphate species, for example, dissolved organophosphonates, which can also pose a risk of eutrophication once released into the environment (Rott et al, 2018). Other phosphorus sorbents include nano zero-valent iron (Eljamal, Khalil, Sugihara, & Matsunaga, 2016), iron oxides and clay (Fang, Cui, He, Lei, & Chen, 2017), zirconium oxide particles (Su, Cui, Li, Gao, & Shang, 2013) along with zirconium composites .…”

Section: Research Articlementioning

confidence: 99%

Phosphate removal from water using alginate/carboxymethylcellulose/aluminum beads and plaster of paris

Malicevic

Pacheco

Lamont

et al. 2020

Water Environment Research

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Phosphorus released in lakes due to agricultural water runoff causes eutrophication, deteriorating water quality and harming ecosystems. Two adsorbents were studied for the removal of phosphate from water: plaster of Paris powder and hydrogel beads produced using alginate, carboxymethylcellulose, and aluminum. The reaction kinetics, adsorption capacity, and ability to desorb were compared. Sorption of phosphate with either plaster of Paris or hydrogel beads was well described by the Langmuir model. In deionized water, hydrogel beads had a maximum sorption capacity of 90.5 mg PO43- /g dry bead with an equilibration time of approximately 24 hr. Monovalent anions (e.g., chloride) did not affect phosphorus sorption onto hydrogel beads, whereas divalent anions (e.g., sulfate) hindered sorption. In deionized water, plaster of Paris (POP) powder has a maximum capacity of 1.52 mg PO43- /g with an equilibrium time of less than 10 min. Sorbents can potentially be reused following phosphate desorption, and desorbed phosphate may be reused as fertilizer. At pH = 9.5, hydrogel beads desorbed up to 60% of the original amount of phosphate sorbed and lower amounts at lower pH. At pH = 2, POP powder desorbed only 35% of the initial phosphate sorbed, and desorption decreased with increasing pH. Practitioner points The maximum sorption capacity of plaster of Paris is 1.52 mg PO43- /g. The maximum sorption capacity of hydrogel beads is 90.5 mg PO43- /g. Monovalent anions do not affect phosphorus sorption, and divalent anions hinder it by ≈36%. Sorption is well described by Langmuir isotherms (R2 > 0.98). Hydrogel beads desorb 60% of phosphorus at pH = 9, possibly allowing phosphorus reuse.

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Removal of phosphonates from synthetic and industrial wastewater with reusable magnetic adsorbent particles

Cited by 87 publications

References 30 publications

Adsorption as a technology to achieve ultra-low concentrations of phosphate: Research gaps and economic analysis

Adsorption as a technology to achieve ultra-low concentrations of phosphate: Research gaps and economic analysis

Behavior of PBTC, HEDP, and Aminophosphonates in the Process of Wastewater Treatment

Phosphate removal from water using alginate/carboxymethylcellulose/aluminum beads and plaster of paris

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