Purification of wastewater from Sindos industrial area of Thessaloniki (N. Greece) using Hellenic Natural Zeolite

The Use of Heu-Type Zeolitic Tuff in Sustainable Agriculture: Experimental Study on the Decrease of Nitrate Load in Vadose Zone Leachates

“…So far, similar decrease percentages have been recorded using very-high quality HEU-type zeolitic tuff and surfactant modified clinoptilolitic zeolitic tuff, (86-92%) in batch treatments of urban wastewaters (Filippidis et al, 2008b(Filippidis et al, , 2015aFilippidis, 2008Filippidis, , 2009Filippidis, , 2010Filippidis and Tsirambides, 2012), (94%) in batch treatment of dyeing industry wastewater (Filippidis et al, 2015b), (54-60%) in batch treatments of industrial area wastewaters (Filippidis et al, 2011a(Filippidis et al, ,b, 2013(Filippidis et al, , 2014, (57%) in batch treatment of nitrate-solutions (Filippidis, 2007(Filippidis, , 2010, (55%) in batch treatment of groundwater Filippidis, 2010), and (96-97%) in batch and column treatments of groundwater (Masukume et al, 2011). In leaching experiments, 100% of the nitrate were leached from Kilkis city sewage sludge and Thessaloniki dyeing industry sludge (Filippidis et al, 2008b(Filippidis et al, , 2015aFilippidis, 2009;Filippidis and Tsirambides, 2012).…”

Cultivation of Cyanobacteria on Sustainable Dried Luffa cylindrica

“…After 14 days of cultivation of N. muscorum 1453-12a with zeolite, 89.08 ± 7.00% of the cells were in the supernatant, while the rest grew immobilized on the flask wall (see Figure 1 and Table 1). In contrast, Filippidis et al [25] demonstrated a decrease in cyanobacteria in seawater by 74.93% for filamentous and 50.94% for colonial strains by the addition of zeolite. They were also able to demonstrate the accumulation of cyanobacteria in the pores of the zeolite by scanning electron microscopy.…”

“…However, it must be said that none of these studies investigated the growth of cyanobacteria or the impact of L. cylindrica on the composition and product formation of cyanobacteria. In contrast, Filippidis et al [25] demonstrated a decrease in cyanobacteria in seawater by 74.93% for filamentous and 50.94% for colonial strains by the addition of zeolite. They were also able to demonstrate the accumulation of cyanobacteria in the pores of the zeolite by scanning electron microscopy.…”

“…During cultivation in the Erlenmeyer flask, the cells were probably transported to the top of the flask wall by the heavy zeolite particles during shaking, where they grew immobilized. In the experiments of Filippidis et al [25], the zeolite was merely added to seawater without agitating the water. This probably makes it more possible for cells to diffuse into the particles.…”

Applications of the Hellenic Natural Zeolite (Henaze) and Specifications of Zeolitic Tuffs

“…All values of the clear water quality parameters, after repeated treatments, can be within the required limits for disposition as downstream, irrigation, swimming and fish waters. HENAZE (6-7.7*g, 10-12.5**g), Grain-size (<0.5, <1.5mm), Stirring time (2-60*min, 2**min) *) Filippidis et al 2008aFilippidis et al -f, 2009aFilippidis et al ,b, 2010bFilippidis et al , 2015aFilippidis 2010b Filippidis et al 2011bFilippidis et al ,c, 2013Filippidis et al , 2014Filippidis et al , 2015c, **) Filippidis et al 2008a;Filippidis 2013 Aquaculture: Cleaning the water and reducing ammonia by 90% by crossing three (3) sequential filters of HENAZE (grain size 1-8 mm). Air purification in fish feed plant: The strong odor reduction was achieved by passing the air through two (2) sequential filters (20 cm in thickness) of HENAZE (grain size 8-25 mm).…”