Influence of Physical and Chemical Parameters on the Treatment of Heavy Metals in Polluted Stormwater Using Zeolite—A Review

Ziyath, Abdul Mohamed; Mahbub, Parvez; Goonetilleke, Ashantha; Adebajo, Moses O.; Kokot, Serge; Oloyede, Adekunle

doi:10.4236/jwarp.2011.310086

Cited by 49 publications

(23 citation statements)

References 72 publications

(98 reference statements)

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“…ions, and the increase of the selectivity with the decrease in the concentration of the external solution. This behavior supports the electroselectivity effect due to the Donnan potential which acts with a greater force on an ion with higher charge and which increases with the dilution of the external solution (Ziyath et al 2011). It can be observed that for concentrations of the external solution higher than 0.5 eq/L, the Na ?…”

Section: Resultssupporting

confidence: 56%

Na+/Cu2+ ion exchange equilibrium on Zeolite A: a thermodynamic study

Perişanu

Oancea

2015

Adsorption

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The ion exchange isotherms at 302 K for Na ? / Cu 2? and Cu 2? /Na ? on zeolite A were determined for six total equivalent concentrations of the external solution, in the range 0.05-2.1 eq/L. Interpolated points from the curves fitted with different isotherms were used in the calculation of the selectivity coefficients. The activity coefficients in the external solution were calculated by means of the Pitzer model. Thermodynamic equilibrium constant values corresponding to different total concentrations of the external solution have been obtained investigating the reaction from both sides. The method of Gaines and Thomas, revised by Soldatov, based on the dependence of the normalized Kielland selectivity quotients on the copper ionic fraction in the zeolite was used in order to obtain the thermodynamic equilibrium constant value. The significance of the thermodynamic equilibrium constant and the reversibility of the process were analyzed, as well as the influence of the non-ideality of the zeolite and solution phases.

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Section: Resultssupporting

confidence: 56%

Na+/Cu2+ ion exchange equilibrium on Zeolite A: a thermodynamic study

Perişanu

Oancea

2015

Adsorption

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“…Zeolite has a SiO 4 or AlO 4 tetrahedral structure with cages and cavities as secondary structures due to different arrangement of tetrahedral structures [18], but charcoal has amorphous structure. Filter will have higher strength if it has structure rather than amorphous form so reducing charcoal content will reduce amorphous form.…”

Section: Compressive Strength Test Resultsmentioning

confidence: 99%

“…Zeolite with low Si/Al ratio, will have high sorption capacities because they have more binding site. Acid activation using strong acid will break Al bonding so zeolite will have low Si/Al ratio [18]. This research used HF for zeolite activation so we will have zeolite with low Si/Al ratio and only adsorb low amount of Sr atom.…”

Section: Radioactive Filtering Capacity Testmentioning

confidence: 99%

Indonesia’s Local Material Effect in Clay-Based Ceramic Filter Fabrication as an Alternative for Liquid Radioactive Waste Processing Material

Rosita¹,

Ferdiansjah²,

Pamungkas³

et al. 2016

MSA

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One of the procedures to handle liquid radioactive waste is by filtration process. To do this process, suitable filter should be used because of radioactive nature of the waste. Ceramic filter is one of the suitable filters that could be used for this purpose. This paper will discuss about producing ceramic filter from local clay and test its performance. Performance of the filter is given by its flux, compressive strength, Decontamination Factor (DF) and adsorption efficiency. The results show that there are almost no effects of casting pressure on both flux and compressive strength of ceramic filter, but zeolite addition produces different effect. The higher concentration of zeolite will decrease the filter flux and increase filter compressive strength. The optimal composition from this research is 70% w/o clay-25% w/o zeolite-5% w/o charcoal. It has adsorption efficiency (60.36) and Decontamination Factor (2.52). Besides, Sr concentration after filtration is still higher than environmental standard for Sr-90 and more studies are still needed.

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“…Zeolite-based technology can provide a cost effective solution for pharmaceutical wastewater treatment for the removal of toxic heavy metals under increasing demand of safe water from alternative sources [21][22][23]. Numerous previous studies have investigated the removal efficiency of zeolite tuff when placed in fixed bed columns confirmed their excellent performance on the removal of metal cations from wastewaters [24][25][26].…”

Section: Evaluation Of Absorption Process For Heavy Metals Removal Fomentioning

confidence: 98%

Evaluation of Absorption Process for Heavy Metals Removal found in Pharmaceutical Wastewater

Radaideh¹,

Abdulgader²,

Barjenbruch³

2017

J Med Toxicol Clin Forensic

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This study focused on the adsorption/absorption process of natural volcanic tuff, its application, kinetics, efficiency, velocity and selectivity order in removing heavy metals found in pharmaceutical wastewater.Series of experiments were conducted in batch-wise and fixed-bed columns to study the removal performance and selectivity sequence of mixed metal ions (Pb ) in aqueous solution using natural volcanic tuff material as adsorbent. The main purpose of this study is to highlight the economical application of the method in treatment of pharmaceutical wastewater.Heavy metal salts were used to prepare synthetic pharmaceutical wastewater containing a mixture of different metal ions concentrations ranged from 1 to 20 mg/L were to be applied to columns packed with natural volcanic tuff rich in zeolite ranged between (0.50-3.50 mm ) in grain size. Photometric procedure was used for sample analysis. The absorption experiments were carried out under changing conditions, different pH-values (2, 4, 6 and 7), initial solute concentrations (1, 5 and 10) mg/L, different temperatures (10, 20 and 30°C) and varying tuff particle sizes (0.50-3.50) mm.The results showed that Freundlich model described satisfactorily sorption of Cu 2+ and Fe 2+. Used volcanic tuff exhibit efficiency in removing heavy metals ranging from 45-99% of the added Cr, Cu, Zn, Pb and Fe metal concentrations, respectively. According to the percentage sorption and distribution coefficients values, the selectivity sequence of studied metals by volcanic tuff is strongly dependent of pH, however approximating all results a selectivity sequence can be given as Pb ≥ Fe>Cr>Zn>Cu at pH around 2 and a selectivity sequence as Fe>Cu>Cr>Zn>Pb at pH=6-7. The result confirms that natural volcanic tuff hold great potential to remove cationic heavy metal species from industrial wastewater. of heavy metals, much attention has been paid for occurrence, concentrations, movement, fate and the anticipated health and environmental risks that may arise from these heavy metals since they have direct exposure to humans and other organisms [8,9]. The demand for pharmaceuticals has resulted in a consequent increase in pharmaceutical manufacturing companies in the world and hence increased pharmaceutical waste which most times contain substantial amount of heavy metals. Pharmaceutical residues in the environment, and their potential toxic effects, have been recognized as one of the emerging research area in the environmental chemistry [10,11]. Pharmaceutical effluents are usually discharged into the environment and when improperly handled and disposed, they affect both human health and the environment [12,13]. KeywordsThe presence of pharmaceutical compounds in waters comes from two different sources: production processes of the pharmaceutical industry and common use of pharmaceutical compounds resulting in their presence in urban wastewaters [14][15][16][17]. The pharmaceutical wastewaters generated in different processes in the manufacture of pharmaceuticals and drugs cont...

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Influence of Physical and Chemical Parameters on the Treatment of Heavy Metals in Polluted Stormwater Using Zeolite—A Review

Cited by 49 publications

References 72 publications

Na+/Cu2+ ion exchange equilibrium on Zeolite A: a thermodynamic study

Na+/Cu2+ ion exchange equilibrium on Zeolite A: a thermodynamic study

Indonesia’s Local Material Effect in Clay-Based Ceramic Filter Fabrication as an Alternative for Liquid Radioactive Waste Processing Material

Evaluation of Absorption Process for Heavy Metals Removal found in Pharmaceutical Wastewater

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