Ion exchange studies on natural and modified zeolites and the concept of exchange site accessibility

Inglezakis, Vassilis J.; Loizidou, M.; Grigoropoulou, H.

doi:10.1016/j.jcis.2004.02.070

Cited by 144 publications

(75 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Temperature of solution influences the heavy metal sorption mainly by enhancing the diffusion of hydrated heavy metal ions [63]. Energy of heavy metal ionic complex in solution increases with increasing temperature.…”

Section: Temperaturementioning

confidence: 99%

Influence of Physical and Chemical Parameters on the Treatment of Heavy Metals in Polluted Stormwater Using Zeolite—A Review

Ziyath¹,

Mahbub²,

Goonetilleke³

et al. 2011

JWARP

View full text Add to dashboard Cite

Zeolite-based technology can provide a cost effective solution for stormwater treatment for the removal of toxic heavy metals under increasing demand of safe water from alternative sources. This paper reviews the currently available knowledge relating to the effect of properties of zeolites such as pore size, surface area and Si:Al ratio and the physico-chemical conditions of the system such as pH, temperature, initial metal concentration and zeolite concentration on heavy metal removal performance. The primary aims are, to consolidate available knowledge and identify knowledge gaps. It was established that an in-depth understanding of operational issues such as, diffusion of metal ions into the zeolite pore structure, pore clogging, zeolite surface coverage by particulates in stormwater as well as the effect of pH on stormwater quality in the presence of zeolites is essential for developing a zeolite-based technology for the treatment of polluted stormwater. The optimum zeolite concentration to treat typical volumes of stormwater and initial heavy metal concentrations in stormwater should also be considered as operational issues in this regard. Additionally, leaching of aluminium and sodium ions from the zeolite structure to solution were identified as key issues requiring further research in the effort to develop cost effective solutions for the removal of heavy metals from stormwater.

show abstract

Section: Temperaturementioning

confidence: 99%

Influence of Physical and Chemical Parameters on the Treatment of Heavy Metals in Polluted Stormwater Using Zeolite—A Review

Ziyath¹,

Mahbub²,

Goonetilleke³

et al. 2011

JWARP

View full text Add to dashboard Cite

show abstract

“…Se evaluó el NH 4 + retenido por destilación Kjedhal. El NH 4 + que ocuparon los sitios de intercambio de la clinoptilolita se calculó por la diferencia entre la concentración inicial y fi nal de NH 4 + en el sobrenadante (Inglezakis et al, 2004).…”

Section: Obtención Y Características De La Clinoptilolitasunclassified

Uso de clinoptilolita como un vehículo de fertilizantes nitrogenados en un suelo de la región Pampeana de Argentina

et al. 2008

View full text Add to dashboard Cite

The properties of clinoptilolite related to cationic exchange and ionic selectivity have motivated us to study its application for agronomic purposes. The high potential of the clinoptilolite has been demonstrated as a vehicle for nitrogen fertilizers, with the aims of decreasing negative impacts on the environment and increasing fertilizer effi ciency. The objective of this study was to evaluate the effects of an exchanged form, clinoptilolite-NH 4 , and an occluded form, clinoptilolite-urea, of nitrogen fertilizer relative to commercial urea on dry matter and the nitrogen uptake effi ciency of Lolium multifl orum under controlled conditions. Lolium multifl orum, sowed in a sandy loam soil, was fertilized with 0, 60, 120, and 180 kg·ha -1 of nitrogen. Yield increased considerably and nitrogen uptake effi ciency was enhanced when clinoptilolite-NH 4 was used, possibly due to its ability to retain and slowly liberate NH 4 + ions. This effect produces time differences in nitrogen disponibility in relation to urea, making the nitrogen available for a longer time for the plant. The clinoptilolite-urea treatments reduced yields signifi cantly in comparison with urea applications only at the lowest dose. In addition, the nitrogen uptake effi ciency was always lower than the other treatments. This behavior is related to the fact that nitrogen liberation dynamics of the occluded form are much slower than for the ionic one.

show abstract

“…Some high quality HEU-type natural zeolites, displays unique physical and chemical features and have a great variety of environmental, industrial, aquacultural and agricultural applications. The large natural zeolite deposits and the low cost of mining, gave access to large-scale utilization (e.g., Pond and Mumpton, 1984;Tsitsishvili et al, 1992;Carr, 1994;Collela and Mumpton, 2000;Bish and Ming, 2001;Harben, 2002;Savvas et al, 2002;Inglezakis and Grigoropoulou, 2004;Inglezakis et al, 2004Inglezakis et al, , 2005Filippidis, 2008;Filippidis et al, 2008e-g). …”

Section: Introductionmentioning

confidence: 99%

“…% (e.g., Kirov et al, 1990;Marantos and Perdikatsis, 1994;Filippidis et al, 1995;Arvanitidis, 1998;Stamatakis et al, 1998Stamatakis et al, , 2001Hall et al, 2000;Kassoli-Fournaraki et al, 2000;Yannakopoulos et al, 2000;Zorpas et al, 2000a,b;Barbieri et al, 2001;Moirou et al, 2001;Vlessidis et al, 2001;Koshiaris et al, 2002;Kyriakis et al, 2002;Papaioannou et al, 2002a,b;Savvas et al, 2002;Christidis et al, 2003;Katranas et al, 2003;Krestou et al, 2003;Perraki et al, 2003;Fokas et al, 2004;Inglezakis and Grigoropoulou, 2004;Inglezakis et al, 2004Inglezakis et al, , 2005Perraki and Orfanoudaki, 2004;Kantiranis et al, 2006;Warchol et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

Purification of Urban Wastewaters by Hellenic Natural Zeolite

Filippidis¹,

Papastergios²,

Apostolidis³

et al. 2017

geosociety

View full text Add to dashboard Cite

Treatment of urban wastewaters (pH initial 8.2), with 6 g of Hellenic Natural Zeolite (HENAZE) of an grain-size < 1.5 mm, gave overflowed clear water of pH 7.5, free of odors and improved quality parameters by 87% for the suspended particles, 88% for the color, 91% for the P 2 O 5 content, 93% for the chemical oxygen demand (COD) and 97% for the NH 4 content. Compared to previous experiment, the decrease of the amount of HENAZE by 1.5 g (20%) resulted to the purification worsening only by 1-2%. The HENAZE comes from Ntrista stream of Petrota village of Trigono Municipality of Evros Prefecture, Northeastern Greece. HENAZE contains 89 wt.% HEU-type zeolite and exhibit an ammonia ion exchange capacity (sorption ability) of 226 meq/100g. The mineralogical composition and the unique physico-chemical properties, make the HENAZE suitable material for numerous environmental, industrial, agricultural and aquacultural applications, such as: Animal nutrition, soil amendment for agriculture, pH soil regulation, greenhouse and flowers substrates, durability and health improvement of lawn, purification of industrial and urban wastewaters, treatment of sewage sludge, odor control, fishery and fish breeding, gas purification and drying systems, oxygen enrichment of aquatic ecosystems, improvement of drinking water quality, constructed wetlands and wastewater treatment units. The treatment gave as precipitate an odorless and cohesive zeo-sewage sludge, suitable for safe deposition and also for the reclamation of agricultural soils. The zeo-sewage sludge, produced either from the urban wastewater treatment or from the mixing of HENAZE and sewage sludge, can be used for the reclamation of agricultural soils. The presence of HENAZE in the agricultural soils, increases the crops yield by 29-57% and improves the quality of agricultural products by 4-46%, reduces the use of fertilizers by 55-100%, reduces the usage of irrigation water by 33-67%, prevents the seepage of dangerous species into the water environment (e.g., NO 3 -by 55-57%), protecting thus the quality of surface and underground waters. The usage of HENAZE in vivarium units and in the animal nutrition, increases the production and improves the quality of the relevant products.

show abstract

Ion exchange studies on natural and modified zeolites and the concept of exchange site accessibility

Cited by 144 publications

References 31 publications

Influence of Physical and Chemical Parameters on the Treatment of Heavy Metals in Polluted Stormwater Using Zeolite—A Review

Influence of Physical and Chemical Parameters on the Treatment of Heavy Metals in Polluted Stormwater Using Zeolite—A Review

Uso de clinoptilolita como un vehículo de fertilizantes nitrogenados en un suelo de la región Pampeana de Argentina

Purification of Urban Wastewaters by Hellenic Natural Zeolite

Contact Info

Product

Resources

About