Author: Zeolife.gr

K. Lizama Allende, T. D. Fletcher and G. Sun Department of Civil Engineering, Monash University, Building 60, Melbourne, VIC 3800, Australia E-mail: katherine.lizama@monash.edu ABSTRACT The presence of arsenic and heavy metals in drinking water sources poses a serious health risk due to chronic toxicological effects. Constructed wetlands have the potential to remove arsenic and heavy metals, but little is known about pollutant removal efficiency and reliability of wetlands for this task. This lab-scale study investigated the use of vertical subsurface flow constructed wetlands for removing arsenic, boron, copper, zinc, iron and manganese from synthetic wastewater. Gravel, limestone, zeolite and cocopeat ... Read more

Vandana Swarnkar (1) & Radha Tomar (2) (1) School of Studies in Chemistry Jiwaji University, GWALIOR – 474011 (M.P.) INDIA (2) School of Studies in Chemistry Jiwaji University, GWALIOR – 474011 (M.P.) INDIA ABSTRACT: The use of surfactant-modified zeolites as sorbents to remove multiple types of contaminants from water has attracted great attention recently. Sorption of cationic surfactants onto negatively charged zeolite and clay mineral surfaces is controlled by cation exchange and hydrophobic interactions. When surfactant loading is less than the cation exchange capacity (CEC) of the substrate, the retention of surfactant is via cation exchange. Once the surfactant loading ... Read more

Khanal Arjun(1) Paudel Pratima(2) 1 Project Coordinator/Research Associate at Center for Environmental and Agricultural Policy Research, Extension and Development (CEAPRED) (E-mail: arjunkhanal15@gmail.com) 2 Data entry officer at Center for Environmental and Agricultural Policy Research, Extension and Development (CEAPRED) (E-mail: Paudelpratima10@yahoo.com) Abstract Seed drying beads are modified ceramic materials (aluminum silicates or “zeolites”) that specifically absorb and hold water molecules very tightly in their microscopic pores. The beads will continue to absorb water until all of their pores are filled, up to 20 to 25% of their initial weight. Seven experiments were carried out using zeolite seed Drying Beads® to dry ... Read more

At last, the lies about Greece leaving the EU – as if the European Union would want that – have come to an end. From the very beginning of this whole affair, we have consistently written that no such procedure exists within the institutional framework, however much some people might have imagined it. The only way for such an exit to happen is solely through Greece’s own will. You’d need the liver of Prometheus to endure the beating we’ve taken. But now more and more voices are speaking out freely and putting an end to this farce. The funniest thing, ... Read more

When there are not even objective values within a political sphere, how can one expect any progress in the implementation of a policy? When it has been proven that the only thing that matters is the party – and nothing else, no matter what happens in our country – why are you still wondering if there is any hope? The crux of the matter surely lies elsewhere, especially when you realise that it is incapable of playing any role in strategy or action. For the rigged negotiations not only failed to benefit Greece’s progress, but actually managed to undermine it, ... Read more

5th Master Class on Spatial and Temporal Strategy. Othonoi, 25–28 August 2015

See the full interview below Source: N. Lygeros Official Channel

The Minister for Productive Reconstruction, the Environment and Energy has turned a vision into reality. By means of an official decision, the approvals for the technical studies have been revoked following a breach of the terms by the company Hellas Gold. In practical terms, this amounts to a suspension of works, and that in itself is already an achievement. We are not even going to analyse the issue in the context of the upcoming elections. It does not concern us at all, in the sense that the priority is to halt the destruction of nature and the lives of our ... Read more

C.C.M. Rindt, M. Gaeini, S.Lan, D.M.J. Smeulders Eindhoven University of Technology, PO Box 513, 5600 MB Eindhoven, The Netherlands In summer, the sun provides more heat than needed to warm residential houses while in winter the heat demand cannot be met by solar energy supply. A solution is to store excess solar energy in a thermal ‘battery’ which can be discharged to meet the residential heat demand in winter. A reliable method for seasonal solar heat storage is by means of thermochemical materials (TCMs). The process is based on a reversible adsorption-desorption reaction, which is exothermic in hydration and endothermic ... Read more

zeolite is a mineral which, due to its structure at the molecular level, binds heavy metals, toxins and free radicals; it can therefore be used in human health for detoxification, in livestock farming as a dietary supplement, and in agriculture to conserve water and fertilisers and to avoid the use of harsh pesticides, whilst at the same time increasing yields with improved quality in terms of flavour, aroma and colour. It can also be applied on a smaller scale, such as in pots and gardens. The recommended ratio for use in pots is 1 kg of zeolite per 10 kg ... Read more

Experimental Greek zeolite – N. Lygeros Thanks to the zeolite exploration licence held by Giorgos Georgiadis in the Kokkalo area, we now have Greek zeolite in our hands for the first time, enabling us to carry out experiments and select applications. At present, of course, there are only a few kilograms available until the licence to mine Greek zeolite is granted, but it marks a symbolic beginning that proves the vision has become a reality, and now no one can dispute its existence, however slow on the uptake they may be. As we require material for experiments relating to Greek ... Read more

Ruder Boskovic  Institute, Zagreb, Croatia I. INTRODUCTION A particular structural feature of zeolites relative to other aluminosilicate materials, and other crystalline materials in general, is the existence of channels and/or cavities linked by channels. One of the characteristics that distinguishes zeolites from other porous materials is their variety of pore sizes and shapes. The size and shape of channels/cavities in zeolites therefore define the structural parameters of a given type of zeolite (1). Properties of zeolites, such as ion exchange, intercrystalline pores that discriminate between molecules of different dimension, strong acidic sites, and active reservoirs for metal-catalyzed reactions, have earned ... Read more