Column performance in lead removal from aqueous solutions by fixed bed of natural zeolite–clinoptilolite

Medvidović, Nediljka Vukojević; Perić, Jelena; Trgo, Marina

doi:10.1016/j.seppur.2005.10.005

Cited by 88 publications

(49 citation statements)

References 24 publications

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“…Unlike vermiculite, high Pb elimination from the industrial wastewater was resulted in natural zeolite and perlite substrates. This is supported by findings of Halimoon and Yin (2010) and Medvidović et al (2006) which showed zeolite has high performance to remove heavy metals from wastewater. Natural zeolite also showed medium ability to absorb Fe and Cd from wastewater, so, high amounts of these elements are accumulated in the soil surrounding the pitcher.…”

Section: Resultssupporting

confidence: 80%

Heavy metal elimination from industrial wastewater using natural substrate on pitcher irrigation

Najafi

Asgari

Samadi

2016

Int J Recycl Org Waste Agricult

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Combination of pitcher irrigation with drip irrigation system could be resulted in prolonging the secondary treatment period, as it could be an efficient system in which municipal and industrial wastewater can be treated and heavy metals can be reduced. For this purpose, an experiment was conducted with three treatments [clay pitcher included natural zeolite Clinoptilolite (NZ), perlite (P) and vermiculite (V)] which filled half of the volume of a clay pitcher with five replications for each treatments. Beside each tree, one pitcher was placed at 50 cm depth. The soil of each hole was initially sampled, sealed, and transported to the laboratory. The pitchers were irrigated with treated industrial wastewater (from steel factory) 60 times (1500 cc per each irrigation event) over a period of six months. At the end of experiment period, the pitchers were removed and samples were taken from the substrate inside each pitcher and from the soil near the walls and bottoms of the holes. The sealed samples were transported to the laboratory for analyzing heavy metals (Fe, Cd, Cr, Cu, Pb, Mn, and Zn) using an atomic absorption spectrophotometer. The results showed that the used substrates in this experiment have high ability to absorb some heavy metals, especially Pb and Zn which concentration were increased in final value 75 and 80 times compared with initial values, respectively. However, an increase of these two elements in the soil (Zn = 26 and Pb = 71 ppm) nearby the pitcher indicate that the used substrates have limitations in absorption capacity for the heavy metals in high concentration of them in the wastewater. As this is related to their surface area, application of a nano form of the substrates such as nano zeolite might remarkably increase their cation exchange capacity and surface area.

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Section: Resultssupporting

confidence: 80%

Heavy metal elimination from industrial wastewater using natural substrate on pitcher irrigation

Najafi

Asgari

Samadi

2016

Int J Recycl Org Waste Agricult

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“…fundamental parameters describing the characteristics of the test ion-exchange beds. The volumes of V 0 and V V were determined graphically from the relations in Figures 1-3, while the other mentioned parameters were calculated according to equations 2-5 [10][11][12] . The determined and calculated parameters are summarized in Table 3.…”

Section: Resultsmentioning

confidence: 99%

The Use of Ion Exchange in the Recovery of Vanadium from the Mass of a Spent Catalyst Used in the Oxidation of SO₂ to SO₃

Drużyński

Mazurek

Białowicz

2014

Polish Journal of Chemical Technology

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In the studies on the recovery of vanadium from vanadium catalyst extracts, three types of polymer strongly acidic ion exchangers were used. The ion exchange resins differed in terms of granularity and their ion exchange capacity. As a result, breakthrough curves were made for three main components of the test extract, i.e.: ions of vanadium, iron and potassium. On this basis the optimum conditions for the removal of iron ions from the solution were defi ned and the technological concept of the process in the semi-technical scale was proposed.

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“…The point of column exhaustion (EP) is when the effluent reaches maximum capacity to 90%-95% of its influent value [12,34]. The efficiency of the column performance is related to the bed capacity at breakthrough and at exhaustion, represented by the following relationship [12,34]:…”

Section: Packed Fixed-bed Column Design Considerationsmentioning

confidence: 99%

“…The breakthrough capacity and equilibrium capacity are further expressed in Equations (2) and (3), respectively [12,34]:…”

Section: Packed Fixed-bed Column Design Considerationsmentioning

confidence: 99%

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An Innovative Dual-Column System for Heavy Metallic Ion Sorption by Natural Zeolite

Ciosek

Luk

2017

Applied Sciences

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This study investigates the design and performance of a novel sorption system containing natural zeolite. The apparatus consists of packed, fixed-bed, dual-columns with custom automated controls and sampling chambers, connected in series and stock fed by a metering pump at a controlled adjustable distribution. The purpose of the system is to remove heavy metallic ions predominately found in acid mine drainage, including lead (Pb 2+ ), copper (Cu 2+ ), iron (Fe 3+ ), nickel (Ni 2+ ) and zinc (Zn 2+ ), combined in equal equivalence to form an acidified total 10 meq/L aqueous solution. Reported trends on the zeolite's preference to these heavy metallic ions is established in the system breakthrough curve, as Pb 2+ >> Fe 3+ > Cu 2+ > Zn 2+ >> Ni 2+ . Within a 3-h contact period, Pb 2+ is completely removed from both columns. Insufficient Ni 2+ removal is achieved by either column with the promptest breakthrough attained, as zeolite demonstrates the least affinity towards it; however, a 48.97% removal is observed in the cumulative collection at the completion of the analysis period. The empty bed contact times for the first and second columns are 20 and 30 min, respectively; indicating a higher bed capacity at breakthrough and a lower usage rate of the zeolite mineral in the second column. This sorption system experimentally demonstrates the potential for industrial wastewater treatment technology development.

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Column performance in lead removal from aqueous solutions by fixed bed of natural zeolite–clinoptilolite

Cited by 88 publications

References 24 publications

Heavy metal elimination from industrial wastewater using natural substrate on pitcher irrigation

Heavy metal elimination from industrial wastewater using natural substrate on pitcher irrigation

The Use of Ion Exchange in the Recovery of Vanadium from the Mass of a Spent Catalyst Used in the Oxidation of SO₂ to SO₃

An Innovative Dual-Column System for Heavy Metallic Ion Sorption by Natural Zeolite

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Column performance in lead removal from aqueous solutions by fixed bed of natural zeolite–clinoptilolite

Cited by 88 publications

References 24 publications

Heavy metal elimination from industrial wastewater using natural substrate on pitcher irrigation

Heavy metal elimination from industrial wastewater using natural substrate on pitcher irrigation

The Use of Ion Exchange in the Recovery of Vanadium from the Mass of a Spent Catalyst Used in the Oxidation of SO2 to SO3

An Innovative Dual-Column System for Heavy Metallic Ion Sorption by Natural Zeolite

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Product

Resources

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The Use of Ion Exchange in the Recovery of Vanadium from the Mass of a Spent Catalyst Used in the Oxidation of SO₂ to SO₃