Simultaneous removal of Pb, Cr, Cd, Cu, Ni and Zn from urban stormwater runoff using low-cost agricultural/industrial sorbents

Esfandiar, Narges; Suri, Rominder; McKenzie, Erica C.

doi:10.1021/scimeetings.1c00253

Cited by 2 publications

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“…COD was removed by more than 92% (permeate concentrations<5-7.1 mg/L). Stormwater is known to contain environmentally harmful metals such as Zn, Cu, Cd, Pb, Ni and Cr (Esfandiar, Suri, and McKenzie 2022). In stormwater treatment, it is of particular interest to remove the dissolved and colloidal forms of these metals.…”

Section: Permeate Qualitymentioning

confidence: 99%

Stormwater Treatment Using an Ultrafiltration Membrane and Pulsatile Fluid Flow

et al. 2022

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Section: Permeate Qualitymentioning

confidence: 99%

Stormwater Treatment Using an Ultrafiltration Membrane and Pulsatile Fluid Flow

et al. 2022

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“…The results of using of humic acids obtained from brown coal as a sorbent are presented in many scientifi c publications. In [6], it is presented the results of application of humic acid nanoparticles obtained from brown coal on inert sand by simple impregnation for obtaining a permeable reactive barrier for the purifi cation of groundwater contaminated with copper and cadmium ions. Laboratory studies proved that the sorption effi ciency of such sand is 98 % (sorption time -1 h; sorbent content 0.25 g/50 ml; pH -7; stirring speed 200 rpm).…”

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confidence: 99%

The use of brown coal in Ukraine to obtain water-soluble sorbents

Sinitsyna¹,

Karnozhitskiy²,

Мірошниченко³

et al. 2022

Nauk. visn. nat. hirn. univ.

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Purpose. To develop a method of using salts of humic acids obtained from brown coal of Ukraine for sorption of heavy metal ions and their extraction using ultrafiltration membranes. Methodology. Unique laboratory equipment has been developed to determine the sorption capacity of humic substances with a concentration of 0 to 20 mg/l in relation to heavy metal ions (Cu2+, Pb2+, Cd2+, Hg2+, Zn2+, Co2+) with a concentration of 5 mg/l. The results of proximate and ultimate analyzes, as well as infrared and optical emission spectroscopy were used to assess the quality of brown coal, humic substances and the solution of humic substances with heavy metal ions. Findings. Ukrainian brown coal of Oleksandriia geological-industrial district contains a large amount (about 80%) of humic acid, which is the basis for obtaining effective water-soluble sorbents. It is proved that humic substances obtained from brown coal of Ukraine allow binding up to 99% of heavy metal ions in complexes. The most optimal concentration of humic substances in terms of their concentration and selectivity of heavy metal ions extraction is 5 mg/l. Originality. The possibility of practical using of humic substances obtained from brown coal of Ukraine for sorption of heavy metal ions has been proved. As ultrafiltration membranes, UF-20-PAN membranes are used, which are porous polymer films based on polyacrylonitrile with a pore size of 20 m, the working surface area of the membrane is 28.26 10-4 m2. Practical value. The introduction of the developed technology will allow, firstly, restoring the practical use of large deposits of brown coal in Ukraine, and secondly, introducing deep treatment of industrial and wastewater.

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Simultaneous removal of Pb, Cr, Cd, Cu, Ni and Zn from urban stormwater runoff using low-cost agricultural/industrial sorbents

Cited by 2 publications

References 0 publications

Stormwater Treatment Using an Ultrafiltration Membrane and Pulsatile Fluid Flow

Stormwater Treatment Using an Ultrafiltration Membrane and Pulsatile Fluid Flow

The use of brown coal in Ukraine to obtain water-soluble sorbents

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