REMOVAL OF LEAD IONS FROM INDUSTRIAL WASTEWATER USING PRECIPITATION PROCESS

2017 ◽  
Vol 16 (7) ◽  
pp. 1563-1568 ◽  
Author(s):  
Habib Karimi ◽  
Mehraban Sadeghi ◽  
Moluk Hadi Alijanvand
Keyword(s):  
Industrial Wastewater ◽  
Lead Ions ◽  
Precipitation Process

scholarly journals Magnetite Oxide Nanomaterial Used for Lead Ions Removal from Industrial Wastewater

Materials ◽  
2021 ◽  
Vol 14 (11) ◽  
pp. 2831
Author(s):  
Oana Stoian ◽  
Cristina Ileana Covaliu ◽  
Gigel Paraschiv ◽  
Gina-Alina Catrina (Traistaru) ◽  
Mihai Niță-Lazăr ◽  
...  
Keyword(s):  
Contact Time ◽  
Industrial Wastewater ◽  
Adsorption Process ◽  
Lead Ions ◽  
Maximum Efficiency ◽  
Precipitation Process ◽  
Treatment Efficiency ◽  
Efficient Removal ◽  
Influence Of Ph ◽  
Langmuir And Freundlich Models

The aim of this article is to present a nonconventional method for the efficient removal of lead ions from industrial wastewater. For this purpose, magnetite nanomaterial was used, which was very easily separated from the wastewater at the end of the treatment due to its magnetic properties. Currently, nanotechnology is an efficient and inexpensive manner that is being researched for wastewater treatment. Additionally, iron oxide nanoparticles are widely used to remove heavy metal ions from water due to their special properties. The experimental results detailed in this article show the influence of pH and contact time on the process of adsorption of lead ions from wastewater. The magnetite nanomaterial had its maximum efficiency of speed when the wastewater had pH 6. At a lower pH, the highest treatment efficiency was over 85%, and the required contact time has doubled. When the pH increases above 6, the precipitation process occurs. Langmuir and Freundlich models were used to describe the adsorption process.

Utilization of Zinc Oxide Nanopowder for Photocatalytic Removal of Pb++ Ions from Aqueous Wastewater

2020 ◽  
Vol 20 (11) ◽  
pp. 6831-6834
Author(s):  
Sung Park ◽  
Gyeongseok Park ◽  
Kyungmin Byun ◽  
Sang Heon Lee ◽  
Min Jae Han
Keyword(s):  
Zinc Oxide ◽  
Titanium Dioxide ◽  
Ethylenediaminetetraacetic Acid ◽  
Complete Removal ◽  
Lead Ions ◽  
Precipitation Process ◽  
Solution Combustion ◽  
Zno Nanopowder ◽  
Edta Solution ◽  
Zinc Oxide Nanopowder

Nanometer-sized zinc oxide powders were prepared with a “solution-combustion method (SCM).” This method used zinc oxide nanopowder as a semiconductor oxide catalyst to initiate light-induced redox reactivity in the presence of 150 ppm aqueous lead-ethylenediaminetetraacetic acid solution (Pb-EDTA) for photocatalysis under UV illumination. Removal rates of lead ions in the aqueous Pb-EDTA solution using SCM ZnO powder were compared with those of two other titanium dioxide photocatalysts, P-25 TiO2-powder (Degussa) and rutile TiO2 powder, prepared via a homogeneous precipitation process at low temperature (HPPLT). Using SCM ZnO nanopowder, complete removal of lead ions from the aqueous Pb-EDTA solution was observed within 25 min after UV irradiation. However, HPPLT TiO2 powder and P25 TiO2 powder took almost 45 and 65 minutes to completely remove the lead ions, respectively. Thus, lead ions removal efficiency of SCM ZnO nanopowder is at least twice higher than the efficiency of the other two titanium dioxide photocatalysts investigated.

scholarly journals Magnetic Nanocomposite Material Containing Chitosan Polymer Used in Wastewater Depollution Processes

2021 ◽  
Vol 57 (4) ◽  
pp. 70-76
Author(s):  
Cristina Ileana Covaliu ◽  
Ecaterina Matei ◽  
Oana Stoia ◽  
Gigel Paraschiv
Keyword(s):  
Wastewater Treatment ◽  
Industrial Wastewater ◽  
Nanocomposite Material ◽  
Magnetic Nanocomposite ◽  
Lead Ions ◽  
Treatment Efficiency ◽  
Experimental Conditions ◽  
Nanocomposite Adsorbent ◽  
Chitosan Composite

The aim of this paper was to present the synthesis, characterization and application of the Fe3O4 - chitosan composite as potential adsorbent for removing lead ions from industrial wastewater. The nanocomposite nanomaterial was characterized by XRD and SEM analyzes. The influence of some parameters (pH of wastewater, lead ions concentration and dose of Fe3O4 - chitosan absorbent) upon the efficiency of wastewater treatment were investigated. The Pb (II) ions concentrations in wastewater were 0.5, 1, 1.5 and 2 mg/L. The amounts of Fe3O4 - chitosan nanocomposite adsorbent tested were 0.05, 0.1 and 0.2 g. In some experimental conditions, Fe3O4 - chitosan nanocomposite adsorbent leaded to obtaining of 100% wastewater treatment efficiency.

scholarly journals Utilization of Conventional Treatments and Agricultural Wastes as Low-Cost Adsorbents for Removal of Lead Ions from Wastewater

2021 ◽  
Vol 5 (1) ◽  
pp. 1-17
Author(s):  
Mohammed Jaafar Ali Alatabe
Keyword(s):  
Industrial Wastewater ◽  
Membrane Filtration ◽  
Municipal Wastewater ◽  
Low Cost ◽  
Agricultural Waste ◽  
Chemical Precipitation ◽  
Lead Ions ◽  
Dialysis Membrane ◽  
Very High

This study reviewed the most common methods for removing lead ions from industrial wastewater and municipal wastewater. Most of the research done was reviewed using traditional methods such as chemical precipitation, ion exchange, reverse osmosis, oxidation, evaporation, electric-dialysis, membrane filtration, and solvent extraction. These operations were related to several restrictions, that comprised the treatments to be limited to a definite concentration of the Lead (II) ions. Similarly, disadvantages complicated the production of huge quantities of dangerous waste although very high costs. This means these operations were very costly. For these reasons, to utilize the agricultural waste and low-cost adsorbents operation can be considered as eco-friendly. Currently, agricultural waste and natural materials are present in a huge quantity, and that is very damaging to the environment. Therefore, adsorption is an alternate operation for eliminating Lead (II) ions. According to the increased quality of adsorption operations, like the properties of improved adsorptive, increase availability, and cost-effectiveness, the operation is economical option for eliminating Lead(II) ions.

scholarly journals Using Phragmites australis(Iraqi plant) to remove the Lead (II) Ions form Aqueous solution.

2017 ◽  
Vol 14 (1) ◽  
pp. 148-156
Author(s):  
Baghdad Science Journal
Keyword(s):  
Contact Time ◽  
Industrial Wastewater ◽  
Cost Effective ◽  
Lead Ions ◽  
Slow Process ◽  
Adsorption Parameters ◽  
Adsorption Processes ◽  
Optimized Conditions ◽  
Adsorbent Particle ◽  
Adsorbent Dose

Lead remediation was achieved using simple cost, effective and eco-friendly way from industrial wastewater. Phragmitesaustralis (P.a) (Iraqi plant), was used as anovel biomaterial to remove lead ions from synthesized waste water. Different parameters which affected on adsorption processes were investigated like adsorbent dose, pH, contact time, and adsorbent particle size, to reach the optimized conditions (maximum adsorption). The adsorption of Pb (?) on (P.a) involved fast and slow process as a mechanism steps according to obey two theoretical adsorption isotherms; Langmuir and Freundlich. The thermos dynamic adsorption parameters were evaluated also. The (?H) obtained positive value that meanes adsorption of lead ions was an endothermic processwhile (?G)values were negative which means that adsorption of lead ions was a spontaneous process and the decrease in (?G) with temperature increasing revealed that lead ions adsorption on (P.a) became favorable with temperature increasing

The Use of Algae in the Process of Cadmium and Lead Ions Removal from Wastewater

2021 ◽  
Vol 23 ◽  
pp. 823-834
Author(s):  
Katarzyna Cygnarowska
Keyword(s):  
Binding Sites ◽  
Industrial Wastewater ◽  
Water Reservoir ◽  
Lead Ions ◽  
Algal Culture ◽  
Algal Population ◽  
Raphidocelis Subcapitata ◽  
Resistance To Stress ◽  
Cadmium And Lead ◽  
Algal Cultures

The study presents the possibility of using chlorophyta in the removal of cadmium and lead ions from industrial wastewater produced after the washing of equipment used in the manufacture of battery and batteries. The process was conducted with the use of two algal cultures: Raphidocelis subcapitata produced in laboratory conditions, and a mixed chlorophyta population collected from a natural, eutrophicated water reservoir with heavy metal ions present in the water and sludge. The study showed that the effectiveness of a pure algal culture is comparable to that of a mixed chlorophyta population, characterized by greater diversity of functional groups at binding sites and higher resistance to stress that may occur in the wastewater environment. The maximum effectiveness of ions sorption was 64% for cadmium (mixed algal population) and 60% for lead (Raphidocelis subcapitata).

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