Capacitive deionization and electrosorption for heavy metal removal

2020 ◽  
Vol 6 (2) ◽  
pp. 258-282 ◽  
Author(s):  
Raylin Chen ◽  
Thomas Sheehan ◽  
Jing Lian Ng ◽  
Matthew Brucks ◽  
Xiao Su
Keyword(s):  
Heavy Metal ◽  
Wastewater Treatment ◽  
Water Purification ◽  
Environmental Remediation ◽  
Metal Removal ◽  
Heavy Metal Removal ◽  
Resource Recovery ◽  
Capacitive Deionization

Electrosorption and capacitive deionization technologies can be effective processes in removing heavy metal for water purification, wastewater treatment, resource recovery, and environmental remediation.

Heavy metal removal by biomass-derived carbon nanotubes as a greener environmental remediation: A comprehensive review

Chemosphere ◽  
2021 ◽  
pp. 131959
Author(s):  
Anh Tuan Hoang ◽  
Sandro Nižetić ◽  
Chin Kui Cheng ◽  
Rafael Luque ◽  
Sabu Thomas ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Heavy Metal ◽  
Environmental Remediation ◽  
Metal Removal ◽  
Heavy Metal Removal ◽  
Comprehensive Review

Wastewater Treatment in Removal of Heavy Metals

2019 ◽  
pp. 220-240
Author(s):  
Tehseen Yaseen ◽  
Anum Yaseen
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Wastewater Treatment ◽  
Metal Removal ◽  
Heavy Metal Removal ◽  
New Process ◽  
Removal Of Heavy Metals ◽  
Treatment Technologies ◽  
Growing Economy ◽  
Nano Science

Nanotechnology is the area of nano science that shows great potential to establish a new process for wastewater treatment. It has been applied on a nanometer scale level. Currently, limited water resources and real treatment of wastewater is a chief requirement for the growing economy. It is in great demand to introduce the progressive wastewater treatment technologies. Therefore, the modern innovative processes in nanomaterial sciences have been appealing the target of scientists. The chapter addresses the developments in nanotechnology with respect to wastewater treatment, especially the removal of heavy metals and to the environmental applications. It will discuss the application of different classes of nanomaterials for wastewater treatment in removal of heavy metals and its possible effects to the environment. Therefore, the scope is to offer an overview of how nanomaterials are causing concerns related to heavy metal removal for water and in the surrounding environment.

scholarly journals A Way to Membrane-Based Environmental Remediation for Heavy Metal Removal

Environments ◽  
2021 ◽  
Vol 8 (6) ◽  
pp. 52
Author(s):  
Catia Algieri ◽  
Sudip Chakraborty ◽  
Sebastiano Candamano
Keyword(s):  
Heavy Metal ◽  
Environmental Remediation ◽  
High Efficiency ◽  
Metal Removal ◽  
Heavy Metal Removal ◽  
Scale Up ◽  
Operating Conditions ◽  
Advantages And Disadvantages ◽  
Research Activities ◽  
Key Steps

During the last century, industrialization has grown very fast and as a result heavy metals have contaminated many water sources. Due to their high toxicity, these pollutants are hazardous for humans, fish, and aquatic flora. Traditional techniques for their removal are adsorption, electro-dialysis, precipitation, and ion exchange, but they all present various drawbacks. Membrane technology represents an exciting alternative to the traditional ones characterized by high efficiency, low energy consumption and waste production, mild operating conditions, and easy scale-up. In this review, the attention has been focused on applying driven-pressure membrane processes for heavy metal removal, highlighting each of the positive and negative aspects. Advantages and disadvantages, and recent progress on the production of nanocomposite membranes and electrospun nanofiber membranes for the adsorption of heavy metal ions have also been reported and critically discussed. Finally, future prospective research activities and the key steps required to make their use effective on an industrial scale have been presented

Hydroxyapatite-Based Materials for Heavy Metal Removal in Wastewater Treatment

2020 ◽  
Vol 4 (2) ◽  
pp. 1-5
Author(s):  
Al Bazedi GA
Keyword(s):  
Heavy Metal ◽  
Wastewater Treatment ◽  
Metal Removal ◽  
Heavy Metal Removal ◽  
Cost Effective ◽  
Precipitation Method ◽  
Efficient Removal ◽  
Hydroxyapatite Powder ◽  
Removal Of Heavy Metals ◽  
Treatment Technologies

Nowadays, undisputable environmental pollution requests endeavors to treat wastewater, particularly containing heavy metal, where wastewater treatment technologies are improving hastily. Hydroxyapatite with micro-porous structure and the large surface area turns into an intense research topic as of its high adsorption capacity. Environmentally friendly Hydroxyapatite powder with the large specific surface is a promising cost-effective precipitation method, for the removal of heavy metals (Al, Cd, Co, Cr, Cu, Fe, Mn, Ni, Pb, and Zn) from wastewater. Different studies have revealed the efficient removal of all metals using hydroxyapatite or by modified HA using zeolite or chitosan. The increase of Ca2+ ions content in the treated water suggests an ion exchange mechanism

Environmental remediation of heavy metal ions from aqueous solution through hydrogel adsorption: a critical review

2015 ◽  
Vol 73 (5) ◽  
pp. 983-992 ◽  
Author(s):  
Francis Ntumba Muya ◽  
Christopher Edoze Sunday ◽  
Priscilla Baker ◽  
Emmanuel Iwuoha
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Environmental Remediation ◽  
Heavy Metal Ions ◽  
Metal Removal ◽  
Aqueous Media ◽  
Heavy Metal Removal ◽  
Aquatic Life ◽  
Potential Toxic Elements ◽  
Treatment Technologies

Heavy metal ions such as Cd2+, Pb2+, Cu2+, Mg2+, and Hg2+ from industrial waste water constitute a major cause of pollution for ground water sources. These ions are toxic to man and aquatic life as well, and should be removed from wastewater before disposal. Various treatment technologies have been reported to remediate the potential toxic elements from aqueous media, such as adsorption, precipitation and coagulation. Most of these technologies are associated with some shortcomings, and challenges in terms of applicability, effectiveness and cost. However, adsorption techniques have the capability of effectively removing heavy metals at very low concentration (1–100 mg/L). Various adsorbents have been reported in the literature for this purpose, including, to a lesser extent, the use of hydrogel adsorbents for heavy metal removal in aqueous phase. Here, we provide an in-depth perspective on the design, application and efficiency of hydrogel systems as adsorbents.

Heavy metal removal in duckweed and algae ponds as a polishing step for textile wastewater treatment

2012 ◽  
Vol 44 ◽  
pp. 102-110 ◽  
Author(s):  
Christian B. Sekomo ◽  
Diederik P.L. Rousseau ◽  
Saleh A. Saleh ◽  
Piet N.L. Lens
Keyword(s):  
Heavy Metal ◽  
Wastewater Treatment ◽  
Metal Removal ◽  
Heavy Metal Removal ◽  
Textile Wastewater ◽  
Textile Wastewater Treatment

scholarly journals Removal of chromium(vi) from polluted wastewater by chemical modification of silica gel with 4-acetyl-3-hydroxyaniline

RSC Advances ◽  
2019 ◽  
Vol 9 (64) ◽  
pp. 37403-37414 ◽  
Author(s):  
Ali Bilgiç ◽  
Aysel Çimen
Keyword(s):  
Heavy Metal ◽  
Wastewater Treatment ◽  
Chemical Modification ◽  
Silica Gel ◽  
Metal Removal ◽  
Low Cost ◽  
Heavy Metal Removal ◽  
Chromium Vi ◽  
Polluted Wastewater ◽  
Wastewater Treatment Systems

Use of a newly synthesized Si-CPTS-AHAP adsorbent in the removal of Cr(vi) ions in wastewater treatment systems may potentially lead to low cost and highly efficient heavy metal removal.

scholarly journals Applications of Nanomaterials for Heavy Metal Removal from Water and Soil: A Review

2021 ◽  
Vol 13 (2) ◽  
pp. 713
Author(s):  
Guo Yu ◽  
Xinshuai Wang ◽  
Jie Liu ◽  
Pingping Jiang ◽  
Shaohong You ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Environmental Remediation ◽  
Metal Removal ◽  
Chemical Reactivity ◽  
Heavy Metal Removal ◽  
Factors Affecting ◽  
Adsorption Capacities ◽  
Challenges And Opportunities ◽  
Points Of View ◽  
Widespread Interest

Heavy metals are toxic and non-biodegradable environmental contaminants that seriously threaten human health. The remediation of heavy metal-contaminated water and soil is an urgent issue from both environmental and biological points of view. Recently, nanomaterials with excellent adsorption capacities, great chemical reactivity, active atomicity, and environmentally friendly performance have attracted widespread interest as potential adsorbents for heavy metal removal. This review first introduces the application of nanomaterials for removing heavy metal ions from the environment. Then, the environmental factors affecting the adsorption of nanomaterials, their toxicity, and environmental risks are discussed. Finally, the challenges and opportunities of applying nanomaterials in environmental remediation are discussed, which can provide perspectives for future in-depth studies and applications.

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