Heavy metal removal from wastewater using nanomaterials-process and engineering aspects
| Autor: | Inkollu Sreedhar, Samir Ramdas Kale, Shreya Agarwal, Samyuktha S. Kolluru, Sadamanti Sireesha |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
021110 strategic
defence & security studies Environmental Engineering Materials science Graphene General Chemical Engineering 0211 other engineering and technologies 02 engineering and technology Chemical vapor deposition Carbon nanotube 010501 environmental sciences 01 natural sciences Nanomaterials law.invention Nanocellulose chemistry.chemical_compound Adsorption chemistry Chemical engineering law Environmental Chemistry Process optimization Safety Risk Reliability and Quality 0105 earth and related environmental sciences Magnetite |
| Zdroj: | Process Safety and Environmental Protection. 150:323-355 |
| ISSN: | 0957-5820 |
| DOI: | 10.1016/j.psep.2021.04.025 |
| Popis: | Nanomaterial adsorbents are highly favorable for heavy metal removal due to their large specific surface areas with enhanced active sites for contaminant adsorption. This paper focuses on nanomaterial adsorbents covering aspects like methods of synthesis, types of nanomaterials, kinetics, process optimization, modelling and simulation and column studies besides citing future challenges. It has been found that among various synthesis protocols, Chemical Vapor Deposition was most effective in giving desired attributes. Metallic composites and organic nanomaterials viz., nanocellulose, carbon nanotubes, graphene complexes, magnetite forms etc exhibited highest metal removal capacities of 1989 mg/g for Hg (II) 1641 mg/g for Cd (II) at optimal process conditions. Eco-friendly nanomaterial adsorbents, their properties and potential are also discussed in detail. This work also explores the performance of nanomaterials in fixed bed columns where it showed its capability to be used as an effective adsorbent in continuous adsorption mode. |
| Databáze: | OpenAIRE |
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