Wood mulch coated with iron-based water treatment residuals for the abatement of metals and phosphorus in simulated stormwater runoff

Sidhu, Virinder; Barrett, Kirk R.; Park, Dong Young; Deng, Yang; Datta, Rupali; Sarkar, Dibyendu

doi:10.1016/j.eti.2020.101214

Cited by 12 publications

(11 citation statements)

References 28 publications

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“…Among RCRA metals, As and Ba were detected in some samples but at concentrations well below their maximum allowable concentrations. Similar findings were reported in previous research [ 37 , 38 ]. These results validate the hypothesis that the field application of WTRs is safe and does not poses any ecological or human health risks.…”

Section: Resultssupporting

confidence: 93%

Correlation of Phosphorus Adsorption with Chemical Properties of Aluminum-Based Drinking Water Treatment Residuals Collected from Various Parts of the United States

et al. 2022

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Over the past several decades, the value of drinking water treatment residuals (WTRs), a byproduct of the coagulation process during water purification, has been recognized in various environmental applications, including sustainable remediation of phosphorus (P)-enriched soils. Aluminum-based WTRs (Al-WTRs) are suitable adsorbent materials for P, which can be obtained and processed inexpensively. However, given their heterogeneous nature, it is essential to identify an easily analyzable chemical property that can predict the capability of Al-WTRs to bind P before soil amendment. To address this issue, thirteen Al-WTRs were collected from various geographical locations around the United States. The non-hazardous nature of the Al-WTRs was ascertained first. Then, their P adsorption capacities were determined, and the chemical properties likely to influence their adsorption capacities were examined. Statistical models were built to identify a single property to best predict the P adsorption capacity of the Al-WTRs. Results show that all investigated Al-WTRs are safe for environmental applications, and oxalate-extractable aluminum is a significant indicator of the P adsorption capacity of Al-WTRs (p-value = 0.0002, R2 = 0.7). This study is the first to report a simple chemical test that can be easily applied to predict the efficacy of Al-WTRs in binding P before their broadscale land application.

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Section: Resultssupporting

confidence: 93%

Correlation of Phosphorus Adsorption with Chemical Properties of Aluminum-Based Drinking Water Treatment Residuals Collected from Various Parts of the United States

et al. 2022

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“…Despite this, concentrations of metals are typically low and similar to those in soils, and most metals and metalloids occur in relatively stable forms; some concern was also associated with the concentration of heavy metals in WTRs [ 18 , 19 , 47 ]. According to the results from the toxicity characteristic leaching procedure (TCLP) and synthetic precipitation leaching procedure (SPLP) [ 48 ], the concentration of trace elements in leachate (As, Ba, Cd, Cr, Pb, Hg, or Se) was below the US EPA-allowable levels and below the US primary or secondary drinking water standards. This suggests that WTR samples cannot be considered hazardous waste.…”

Section: Resultsmentioning

confidence: 99%

“…It can be observed that the grains were aggregated into large agglomerates. SEM images of all samples revealed that the surface of grains was uneven and rough [ 48 ]. Additionally, the surface of the grains showed varying brightness in different regions, which suggests that GWTRs are amorphous [ 33 ].…”

Section: Resultsmentioning

confidence: 99%

Iron-Based Water Treatment Residuals: Phase, Physicochemical Characterization, and Textural Properties

et al. 2021

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Groundwater treatment residuals (GWTRs) are safe waste materials generated during drinking water treatment. GWTRs are mainly deposited in landfills, but the preferred solution should be reused or utilized for some components. To ensure proper sludge management, it is important to provide quality, chemical composition, and texture characteristics of GWTRs. Therefore, in this study, we aimed to investigate and compare the features of GWTRs collected from four water treatment plants. GWTRs were characterized by X-ray diffraction (XRD); scanning electron microscopy (SEM) with energy dispersion spectroscopy (EDS); Fourier transform infrared spectroscopy (FTIR); thermogravimetric, differential thermogravimetric, and differential thermal analysis (TG, DTG, and DTA, respectively); X-ray fluorescence (XRF); inductively coupled plasma optical emission spectrometry (ICP-OEP); specific surface area (SBET) measurement; and determination of the isoelectric point (pHIEP). According to the results, GWTRs are poor crystalline materials that are predominantly composed of ferrihydrite with minor calcite and quartz admixture. They formed heterogeneously mixed particles with irregular shapes. They were mainly composed of iron oxides (32–55%), silica (4–28%), calcium oxide (4–17%), and manganese oxides (0.3–4.0%). They were found to be mesoporous with a large specific surface area. Due to their composition and texture characteristics, GWTRs demonstrate good adsorption properties toward different compounds such as heavy metals and metalloids.

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“…Surface area of the DWTS after treatment increased from 72.7 to 148-184 m 2 g -1 . Sidhu et al (2021) performed metals (Cu, Zn and Pb) and phosphorus removal with wood mulch coated with iron-based water treatment residuals in their study. Coated mulch performed better than uncoated mulch for all pollutants.…”

Section: Adsorbent Characterizationmentioning

confidence: 99%

Arsenic and Antimony Removal from Water by Zirconium-Coated Water Treatment Plant Sludge

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2022

Karadeniz Fen Bilimleri Dergisi

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Bu çalışmada, arsenik ve antimon gideriminde içme suyu arıtma çamurlarının adsorban olarak yeniden kullanım potansiyeli araştırılmıştır. Zirkonyum oksit kaplı çamur termal arıtım ve zirkonyum oksit kaplama prosesleriyle üretilmiş ve adsorbanın karakterizasyonu araştırılmıştır. Sonuçlar, zirkonyum oksit kaplı çamurun ağırlıklı olarak amorf olduğu ve yüksek yüzey alanına (170 m2g-1) sahip olduğunu göstermiştir. Arsenik gideriminde optimum koşulların belirlenmesi amacıyla kesikli adsorpsiyon deneyleri gerçekleştirilmiştir. Deney sonucunda optimum pH 3 olarak elde edilmiş, 1 gL-1 adsorban dozunda 180 dk. temas süresinde arsenik konsantrasyonu 50 μgL-1 den 0.25 μgL-1’ye düşmüştür. İzoterm verisi Freundlich izoterm modeline uymuş ve adsorpsiyon kapasitesi 7.38 mgg-1 olarak bulunmuştur. Deneysel verilerin yalancı ikinci derece kinetiğe uyum sağladığı (R2≥ 0.999) saptanmıştır. Ayrıca sürekli akış koşullarında sabit yataklı kolonda arsenik ve antimon gideriminin kolon performansı araştırılmıştır. Adsorpsiyon proses davranışının Thomas ve Yoon–Nelson modelleri tarafından başarıyla tanımlanması, modellerin sabit yataklı kolon dizaynında zirkonyum oksit kaplı çamur için uygun olduğunu göstermektedir.

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Wood mulch coated with iron-based water treatment residuals for the abatement of metals and phosphorus in simulated stormwater runoff

Cited by 12 publications

References 28 publications

Correlation of Phosphorus Adsorption with Chemical Properties of Aluminum-Based Drinking Water Treatment Residuals Collected from Various Parts of the United States

Correlation of Phosphorus Adsorption with Chemical Properties of Aluminum-Based Drinking Water Treatment Residuals Collected from Various Parts of the United States

Iron-Based Water Treatment Residuals: Phase, Physicochemical Characterization, and Textural Properties

Arsenic and Antimony Removal from Water by Zirconium-Coated Water Treatment Plant Sludge

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