scholarly journals Sorbent Based on Polyvinyl Butyral and Potassium Polytitanate for Purifying Wastewater from Heavy Metal Ions

Processes ◽  
2020 ◽  
Vol 8 (6) ◽  
pp. 690
Author(s):  
Anna Ermolenko ◽  
Maria Vikulova ◽  
Alexey Shevelev ◽  
Elena Mastalygina ◽  
Peter Ogbuna Offor ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
Anthropogenic Impacts ◽  
Rapid Development ◽  
Cost Effective ◽  
Polyvinyl Butyral ◽  
Sorption Process ◽  
Potassium Polytitanate ◽  
Water Ecosystems

Currently, the rapid development of industry leads to an increase in negative anthropogenic impacts on the environment, including water ecosystems. This circumstance entails toughening environmental standards and, in particular, requirements for the content of pollutants in wastewater. As a result, developing technical and cost-effective ways for wastewater purification becomes relevant. This study is devoted to the development of a novel composite sorbent, based on polyvinyl butyral and potassium polytitanate, designed to purify water from heavy metal ions. The co-deposition of a mixture based on a polymer solution and a filler suspension was used to obtain a composite material. In this work, the influence of the deposition conditions on the structure and properties of the resulting composites was studied, as well as the optimal ratio of components, including solvent, precipitant, polymer binder, and filler, were established. In the course of this study on the sorption properties of the developed composite materials using various sorption models, the sorption capacity of the obtained material, the sorption mechanism, and the limiting stage of the sorption process were determined. The developed sorbent can be suitably used in the wastewater treatment systems of galvanic industries, enterprises producing chemical current sources, and in other areas.

scholarly journals Removal of heavy metal ions from wastewater: a comprehensive and critical review

2021 ◽  
Vol 4 (1) ◽  
Author(s):  
Naef A. A. Qasem ◽  
Ramy H. Mohammed ◽  
Dahiru U. Lawal
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Large Volume ◽  
Heavy Metal Ions ◽  
Membrane Separation ◽  
Cost Effective ◽  
Operating Conditions ◽  
Future Research ◽  
Sludge Formation ◽  
Metals Removal

AbstractRemoval of heavy metal ions from wastewater is of prime importance for a clean environment and human health. Different reported methods were devoted to heavy metal ions removal from various wastewater sources. These methods could be classified into adsorption-, membrane-, chemical-, electric-, and photocatalytic-based treatments. This paper comprehensively and critically reviews and discusses these methods in terms of used agents/adsorbents, removal efficiency, operating conditions, and the pros and cons of each method. Besides, the key findings of the previous studies reported in the literature are summarized. Generally, it is noticed that most of the recent studies have focused on adsorption techniques. The major obstacles of the adsorption methods are the ability to remove different ion types concurrently, high retention time, and cycling stability of adsorbents. Even though the chemical and membrane methods are practical, the large-volume sludge formation and post-treatment requirements are vital issues that need to be solved for chemical techniques. Fouling and scaling inhibition could lead to further improvement in membrane separation. However, pre-treatment and periodic cleaning of membranes incur additional costs. Electrical-based methods were also reported to be efficient; however, industrial-scale separation is needed in addition to tackling the issue of large-volume sludge formation. Electric- and photocatalytic-based methods are still less mature. More attention should be drawn to using real wastewaters rather than synthetic ones when investigating heavy metals removal. Future research studies should focus on eco-friendly, cost-effective, and sustainable materials and methods.

scholarly journals A Preliminary Investigation Towards Detecting Heavy Metal Ions with a Cost-Effective Scheme

2021 ◽  
Vol 11 (3) ◽  
pp. 3822-3825
Keyword(s):  
Heavy Metal ◽  
Optical Fiber ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
Quantitative Assessment ◽  
Preliminary Investigation ◽  
Cost Effective ◽  
Detection Technique ◽  
Optical Responses ◽  
User Friendly

We report the findings of preliminary investigation corresponding to an optical detection technique implementing smartphone as our receiver towards quantitative assessment of heavy metal ions, namely, Cu, Zn, and Ni. Using intensity modulation, the optical responses are attained through a user-friendly app. The sensing region is made up of optical fiber whose cladding portion has been etched. Subject to varying concentrations of these metal ions, the modulated responses are attained, which reveal a declining trend. The absence of traditional parts such as a spectrophotometer makes the reported scheme cost-effective as well as field-portable.

Cost-Effective Alumina-Polymer Nanocomposite: An Excellent Candidate for the Removal of Heavy Metal Ions from Environmental Samples

Nano Progress ◽  
2019 ◽  
Vol 1 (1) ◽  
Author(s):  
C.M. Babu ◽  
R. Balasubramanian ◽  
R. Vinodh ◽  
P. Thirukumaran ◽  
A. Shakila Parveen ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Environmental Samples ◽  
Heavy Metal Ions ◽  
Polymer Nanocomposite ◽  
Cost Effective ◽  
Excellent Candidate

Cost-Effective Alumina-Polymer Nanocomposite: An Excellent Candidate for the Removal of Heavy Metal Ions from Environmental Samples

Nano Progress ◽  
2019 ◽  
Vol 1 (1) ◽  
Author(s):  
C.M. Babu ◽  
R. Balasubramanian ◽  
R. Vinodh ◽  
P. Thirukumaran ◽  
A. Shakila Parveen ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Environmental Samples ◽  
Heavy Metal Ions ◽  
Polymer Nanocomposite ◽  
Cost Effective ◽  
Excellent Candidate

In situ detection of heavy-metal ions in sewage with screen-printed electrode-based portable electrochemical sensor

The Analyst ◽  
2021 ◽  
Author(s):  
Qiwen Bao ◽  
Gang Li ◽  
Zhengchun Yang ◽  
peng pan ◽  
Jun Liu ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Metal Pollution ◽  
Heavy Metal Pollution ◽  
Heavy Metal Ions ◽  
Rapid Development ◽  
Electrochemical Analysis ◽  
Screen Printed Electrode ◽  
In Situ Detection

The rapid development of industrial technologies continuously increases the heavy-metal pollution of water resources. Recently, portable electrochemical analysis-based devices for detecting heavy-metal ions have attracted much attention due to their...

scholarly journals Characterization and application of biosorbents modified with TiO2 for heavy metal ions removal

2016 ◽  
Vol 14 (2) ◽  
pp. 79-87 ◽  
Author(s):  
Nena Velinov ◽  
Miljana Radovic ◽  
Aleksandra Zarubica ◽  
Aleksandar Bojic
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
Metal Removal ◽  
Heavy Metal Removal ◽  
Bacterial Biomass ◽  
Sorption Process ◽  
Promising Alternative ◽  
Maximum Sorption ◽  
Heavy Metal Ions Removal

Preparation, characterization and application of materials modified with TiO2 nanoparticle have been reviewed. Chitosan, bacterial biomass and dendrimers were the starting material for modification. Sorbents characterization was performed by scanning electron microscopy (SEM). In order to investigate the sorption capabilities of sorbents, we used them for removal of heavy metal ions from aqueous solution. The effect of contact time on heavy metal ions sorption and maximum sorption capacities of biosorbents are shown. As a very important parameter of the sorption process, the effect of initial pH values on heavy metal removal was examined. This paper indicates that sorption using the material modified with TiO2 is becoming a promising alternative to conventional adsorbents in removing heavy metal ions.

scholarly journals Research of pH influence on sorption properties of sorbents on a basis of residual biomass of microalgae Chlorella sorokiniana and duckweed Lemna minor

2019 ◽  
Vol 124 ◽  
pp. 01050
Author(s):  
N.A. Politayeva ◽  
Yu.A. Smyatskaya ◽  
I.V. Dolbnya ◽  
L.S. Kasobov ◽  
D.B. Rakhimov ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Water Purification ◽  
Heavy Metal Ions ◽  
Lemna Minor ◽  
Sorption Process ◽  
Chlorella Sorokiniana ◽  
Sorption Properties ◽  
Special Equipment ◽  
Residual Biomass

This scientific research is determined to a study of sorption process of heavy metal ions removal from aqueous solution at water purification with a help of sorption materials on a basis of residual biomass of microalgae and duckweed. It is known that Chlorella sorokiniana and duckweed Lemna minor have in their composition different valuable substances such as lipids, proteins, pigments, pectic substances. After their extraction residual biomass is formed. And in present study it is proposed for using as biosorbent for water purification. At different pH values the removal of ions of heavy metals (Zn(II), Cd(II), Pb(II), Cu(II)) occurs with varied efficiency; it is an important and informative parameter. Equilibrium and initial concentration of the solution with heavy metal ions were measured by voltammetric method of analysis with a use of special equipment. Chitosan was used as a component for making composite sorption materials with residual biomass of microalgae and duckweed. It is biopolymer which widely used in water purification. Due to this, prepared granules have good sorption properties. Nowadays in the era of technology and wide industrial production it is important and actual to develop new ecological technology and useful materials for water treatment and other fields for environment protection in general.

scholarly journals Cost effective and shape controlled approach to synthesize hierarchically assembled NiO nanoflakes for the removal of toxic heavy metal ions in aqueous solution

2015 ◽  
Vol 38 (1) ◽  
pp. 271-282 ◽  
Author(s):  
K YOGESH KUMAR ◽  
H B MURALIDHARA ◽  
Y ARTHOBA NAYAKA ◽  
H HANUMANTHAPPA ◽  
M S VEENA ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Heavy Metal ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
Cost Effective ◽  
Toxic Heavy Metal ◽  
Shape Controlled

scholarly journals Toxic Heavy Metal Ions and Metal-Complex Dyes Removal from Aqueous Solutions Using an Ion Exchanger and Titanium Dioxide

2018 ◽  
Vol 26 (2(128)) ◽  
pp. 108-114 ◽  
Author(s):  
Anna Wołowicz ◽  
Monika Wawrzkiewicz ◽  
Zbigniew Hubicki
Keyword(s):  
Heavy Metal ◽  
Metal Complex ◽  
Metal Ions ◽  
Sorption Capacity ◽  
Heavy Metal Ions ◽  
Sorption Process ◽  
Point Of Zero Charge ◽  
Toxic Heavy Metal ◽  
Maximum Sorption Capacity ◽  
Metal Complex Dyes

The aim of the study was to compare the removal efficiency of toxic heavy metal ions: chromium(VI), nickel(II) and copper(II) as well as metal-complex dyes from aqueous solution using Lewatite VPOC 1065 and AdsorbsiaTM As500. The point of zero charge (pHPZC) of both sorbents and the influence of the initial concentration on the sorption process of Ni(II), Cu(II), Cr(VI), C.I. Acid Red 183 (AR183), C.I. Reactive Blue 21 (RB21) and nickel(II) phthalocyanine-tetrasulfonic acid tetrasodium salt (NiPc-TSATSS) were studied to determine the maximum sorption capacity. Kinetic studies were also carried out for the most effective sorbent-sorbate systems. The concentration effect of both hydrochloric acid and auxiliaries on the removal yield was also taken into account. As was found, Lewatit VPOC 1065 can be successfully applied for the treatment of textile wastewaters containing metal complex dyes and heavy metal ions. The highest sorption capacity, qe = 816.1 mg/g, was found for C.I. Acid Red 183.

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