Application of natural zeolites in environmental remediation: A short review ☆
TL;DR: A short review of the recent literature concerning the utilization of natural zeolites and their modified forms in the separation, binding and chemical stabilization of hazardous inorganic, organic and radioactive species in soils and aqueous systems is provided in this paper.
About: This article is published in Microporous and Mesoporous Materials.The article was published on 2011-10-01. It has received 360 citations till now. The article focuses on the topics: Environmental remediation & Hazardous waste.
Citations
More filters
TL;DR: This research presents a new mesoporous composite material for superfine microstructure that can be integrated into ceramic mixtures for high-performance materials such as glass and steel.
Abstract: State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai 200050, People’s Republic of China; Department of Materials Science and Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200233, People’s Republic of China; and National Engineering Research Center for Nanotechnology, 28 East Jiangchuan Road, Shanghai 200241, People’s Republic of China
542 citations
TL;DR: In current study, toxicity and carcinogenicity of the organic dyes have been studied as well as the remediation/inactivation of dyes and microorganism has been discussed, and biological, physical and chemical methods has been reviewed critically.
Abstract: Water pollution due to waste effluents of the textile industry is seriously causing various health problems in humans. Water pollution with pathogenic bacteria, especially Escherichia coli (E. coli) and other microbes is due to the mixing of fecal material with drinking water, industrial and domestic sewage, pasture and agricultural runoff. Among the chemical pollutants, organic dyes due to toxic nature, are one of the major contaminants of industrial wastewater. Adequate sanitation services and drinking quality water would eliminate 200 million cases of diarrhea, which results in 2.1 million less deaths caused by diarrheal disease due to E. coli each year. Nanotechnology is an excellent platform as compared to conventional treatment methods of water treatment and remediation from microorganisms and organic dyes. In the current study, toxicity and carcinogenicity of the organic dyes have been studied as well as the remediation/inactivation of dyes and microorganism has been discussed. Remediation by biological, physical and chemical methods has been reviewed critically. A physical process like adsorption is cost-effective, but can't degrade dyes. Biological methods were considered to be ecofriendly and cost-effective. Microbiological degradation of dyes is cost-effective, eco-friendly and alternative to the chemical reduction. Besides, certain enzymes especially horseradish peroxidase are used as versatile catalysts in a number of industrial processes. Moreover, this document has been prepared by gathering recent research works related to the dyes and microbial pollution elimination from water sources by using heterogeneous photocatalysts, metal nanoparticles catalysts, metal oxides and enzymes.
257 citations
TL;DR: In this article, a review mainly summarized the recent studies for the synthesis, fabrication and surface modification of novel nanomaterials and their applications in the efficient elimination and solidification of radionuclides, and discussed the interaction mechanisms from batch experiments, spectroscopy analysis and theoretical calculations.
Abstract: With the development of nuclear energy, large amounts of radionuclides are inevitably released into the natural environment. It is necessary to eliminate radionuclides from wastewater for the protection of environment. Nanomaterials have been considered as the potential candidates for the effective and selective removal of radionuclides from aqueous solutions under complicated conditions because of their high specific surface area, large amounts of binding sites, abundant functional groups, pore-size controllable and easily surface modification. This review mainly summarized the recent studies for the synthesis, fabrication and surface modification of novel nanomaterials and their applications in the efficient elimination and solidification of radionuclides, and discussed the interaction mechanisms from batch experiments, spectroscopy analysis and theoretical calculations. The sorption capacities with other materials, advantages and disadvantages of different nanomaterials are compared, and at last the perspective of the novel nanomaterials is summarized.
246 citations
TL;DR: In this article, a mesoporous hybrid adsorbent (MHA) was developed for selective cesium removal from contaminated water using direct immobilization approach and serving as an efficient adsorent for Cs removal.
232 citations
TL;DR: In this article, a review of the literature for crystalline, inorganic, and potentially inexpensive adsorbents with small pore openings is presented, and a number of different adsorbent with narrow pore opening are compared.
Abstract: Adsorbents with small pores are especially relevant for capturing carbon dioxide at large emission sources. Such sorbents could be used potentially to reduce the energy demands for separating carbon dioxide from flue gas as compared with today's technologies. Here, we review the literature for crystalline, inorganic, and potentially inexpensive adsorbents. A number of different adsorbents with narrow pore openings are compared.
196 citations
References
More filters
01 Jan 1984
3,867 citations
"Application of natural zeolites in ..." refers background in this paper
...[15] and a number of articles and books have appeared on this subject (e....
[...]
TL;DR: A review of the full-scale and developing technologies that are available for metal removal can be found in this paper, where the main techniques that have been used for removal of metals from contaminated soils and sediments are discussed.
1,376 citations
TL;DR: In this article, the Na-exchanged clinoptilolite in presence of ammonium ions has been analyzed and the selectivity of the Na exchange is calculated by plotting the exchange isotherms relative to the various cations.
1,364 citations
TL;DR: This paper provides a review on the geochemical forms, affecting factors and remediation technologies of heavy metal in sediment, especially being fit for slight pollution sediment, and suggests ex situ remediation should be the hot point in future research.
741 citations
"Application of natural zeolites in ..." refers background in this paper
...lutants from the soils or aqueous systems or the reduction of their mobility and/or their in situ stabilization [1,2]....
[...]