Adsorption characteristics of construction waste for heavy metals from urban stormwater runoff

Wang, Jianlong; Zhang, Pingping; Yang, Liandong; Huang, Tao

doi:10.1016/j.cjche.2015.06.009

Cited by 45 publications

(21 citation statements)

References 18 publications

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“…With the rapid development of urbanization, the increase of impervious areas has interrupted the water infiltration channel, which has greatly increased the rainfall runoff and peak discharge [1]. The heavy metals in urban stormwater runoff mainly come from automobile exhaust, industrial smoke and fossil fuel combustion, dust and various metal facilities.…”

Section: Introductionmentioning

confidence: 99%

A Study on the Removal of Copper (II) from Aqueous Solution Using Lime Sand Bricks

et al. 2019

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Heavy metals such as Cu(II), if ubiquitous in the runoff, can have adverse effects on the environment and human health. Lime sand bricks, as low-cost adsorbents to be potentially applied in stormwater infiltration facilities, were systematically investigated for Cu(II) removal from water using batch and column experiments. In the batch experiment, the adsorption of Cu(II) to bricks reach an equilibrium within 7 h and the kinetic data fits well with the pseudo-second-order model. The sorption isotherm can be described by both the Freundlich and Langmuir model and the maximum adsorption capacity of the bricks is 7 ± 1 mg/g. In the column experiment, the best removal efficiency for Cu(II) was observed at a filler thickness of 20 cm, service time of 12 min with a Cu(II) concentration of 0.5 mg/L. The Cu(II) removal rate increases with the increasing bed depth and residence time. The inlet concentration and residence time had significant effects on the Cu(II) removal analyzed by the Box–Behnken design (BBD). The Adams-Bohart model was in good agreement with the experimental data in representing the breakthrough curve. Copper fractions in the bricks descend in the order of organic matter fraction > Fe-Mn oxides fraction > carbonates fraction > residual fraction > exchangeable fraction, indicating that the lime sand bricks after copper adsorption reduce the long-term ecotoxicity and bioavailability to the environment.

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Section: Introductionmentioning

confidence: 99%

A Study on the Removal of Copper (II) from Aqueous Solution Using Lime Sand Bricks

et al. 2019

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“…At present, China is in a critical period of urbanization, and stormwater runoff pollution has become the second largest source of non-point pollution, second only to agricultural pollution [9]. Compared with the chemical oxygen demand (COD), nitrogen (N), phosphorus (P), and other pollutants, heavy metals in the environment are easy to accumulate and pose significant risks for human health through the food chain [10][11][12]. Although the concentrations of heavy metals in stormwater runoff from roads [13,14] and roofs [15] differ when compared with the Chinese Environmental Quality Standard for Surface Water (GB3838-2002) (Table 1) [16], the heavy metal Table 1.…”

Section: Introductionmentioning

confidence: 99%

Removal of Heavy Metals from Urban Stormwater Runoff Using Bioretention Media Mix

Wang

Zhao

Yang

et al. 2017

Water

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Heavy metals from urban stormwater runoff are important sources of surface water pollutants. Sand, zeolite, sandy loam, and quartz-sand were separately mixed with lignin to form four bioretention media mixes for experimental study using synthetic stormwater runoff. The average removal efficiencies of four heavy metals (Cu, Zn, Cd, and Pb) by the four media mixes were all better than 97% at the optimum pH of 6.05 (ranging from 6 to 8) and the seven-day rainfall-event interval. The influence of the influent concentration and the rainfall-event interval on the removal efficiency of heavy metals by the four media mixes was not significant, but the variation of the removal efficiencies at the four-day rainfall-event interval was large. Under acidic conditions, there was a certain heavy metal dissolution in the four reactors, but the effect on the removal efficiency was minor. Heavy metals were present in the media mainly in the form of the residual fraction (>50%). The accumulation of Cu, Zn, and Cd in the surface planting-soil layer (same humus and sandy-loam mixture for all reactors) was significantly larger than the accumulation at deeper depths but not for Pb. Overall, the heavy metal removal efficiencies by the four media mixes were not significantly different, and the choice of the planting-soil layer can become the control factor of heavy metal removal.

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“…Regarding all the pollutants, an average range of removal efficiency can be observed, varying from 20% to almost 50%. This range is low when compared to other studies which also evaluated the laboratory performance and obtained removal rates in the order of 90% (RYCEWICZ-BORECKI; MCLEAN; DUPONT, 2017;CHAHAL;SHI;FLURY, 2016;WANG et al, 2015WANG et al, , 2016LIU et al, 2014;BRATIERES et al, 2008). Finally, an export of pollutants was found for NO 3 , Fe, and Cd.…”

Section: Laboratory Scalementioning

confidence: 75%

“…Wang et al (2015Wang et al ( , 2016 investigated metal removal (Cd, Cu, Pb), testing different filtering media with experiments conducted in bioretention columns. They found a removal rate above 90% in the percolation outlet.…”

Section: Introductionmentioning

confidence: 99%

Performance of bioretention experimental devices: contrasting laboratory and field scales through controlled experiments

Macedo

Lago

Mendiondo

et al. 2018

RBRH

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Studying the performance of LID devices on a laboratory scale has the advantage of flexible layouts, so that more factors can be tested. However, they do not always correspond to what happens on a real scale of application. This paper focuses on a comparative analysis between two bioretention experimental devices considering field and laboratory scales. Based on this comparison, our understanding can be enhanced to extrapolate the results. Flow rate and duration were used as the main equivalence parameters. However, these parameters were insufficient to ensure similarity in the results. We proposed to include control volume, an application rate and an equivalent net depth as new parameters. Further research should test the variation of these parameters.Keywords: SUDS; Stormwater control; Water retention; Pollutant removal. RESUMOEstudos da performance em laboratório possuem a vantagem de layouts flexíveis, podendo testar mais fatores. No entanto, nem sempre correspondem ao que acontece na escala real de aplicação. Este estudo foca em uma análise comparativa entre dispositivos experimentais de bioretenção em escala de campo e em escala de laboratório. A partir dessa comparação, é possível avançar na compreensão para extrapolação dos resultados. Como principais parâmetros de equivalência, foram utilizados a taxa de fluxo e a duração. No entanto, observou-se que estes parâmetros foram insuficientes para garantia de similaridade nos resultados. Indicamos como novos parâmetros a serem incorporados o volume de controle, taxa de aplicação e altura equivalente útil. Novos estudos com a variação destes parâmetros devem ser feitos.

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Adsorption characteristics of construction waste for heavy metals from urban stormwater runoff

Cited by 45 publications

References 18 publications

A Study on the Removal of Copper (II) from Aqueous Solution Using Lime Sand Bricks

A Study on the Removal of Copper (II) from Aqueous Solution Using Lime Sand Bricks

Removal of Heavy Metals from Urban Stormwater Runoff Using Bioretention Media Mix

Performance of bioretention experimental devices: contrasting laboratory and field scales through controlled experiments

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