Tablica 13. Visina taloga, Z (mm), u ovisnosti o vremenu sedimentacije, t (min), uz različite dodatke flokulanta 831A, pri 80 %-tnom taloženju magnezijeva hidr<strong>oksid</strong>a <strong>iz</strong> <strong>morske</strong> <strong>vode</strong>. cm 3 831A / 500 cm 3 <strong>morske</strong> <strong>vode</strong> t /min 3,8 3,9 4,0 4,1 4,2 4,3 4,4 Z / mm 0 157,0 157,0 157,0 157,0 157,0 157,0 157.,0 1 38,0 42,0 39,0 38,0 36,0 38,0 40,0 2 30,0 32,0 32,0 30,0 28,0 29,0 31,0 3 26,0 28,0 28,5* 28,0 26,0* 26,0* 28,0 4 25,0* 25,5* 25,0 26,0* 24,0 25,0 25,5* 5 23,0 24,5 24,0 24,0 23,0 24,0 24,0 6 22,0 24,0 23,0 23,0 22,0 23,0 23,0 7 21,0 23,0 22,0 22,0 22,0 22,0 23,0 8 20,0 22,5 22,0 22,0 21,0 21,5 22,5 9 20,0 22,5 22,0 21,5 20,0 21,0 22,0 10 20,0 22,0 21,0 21,0 20,0 21,0 22,0 11 20,0 22,0 21,0 20,5 20,0 20,5 21,5 12 20,0 22,0 20,0 20,0 19,5 20,5 21,5 13 19,5 21,5 20,0 20,0 19,5 20,0 21,5 14 19,5 21,5 20,0 19,5 19,5 20,0 21,0 15 19,5 21,0 19,5 19,5 19,5 20,0 21,0 16 19,5 21,0 19,5 19,5 19,0 20,0 20,5 17 19,0 21,0 19,5 19,0 19,0 19,5 20,5 18 19,0 20,5 19,5 19,0 19,0 19,5 20,0 19 19,0 20,5 19,0 18,5 18,5 19,5 20,0 20 19,0 20,0 19,0 18,5 18,5 19,0 20,0 21 18,5 20,0 19,0 18,5 18,5 19,0 19,5 22 18,5 19,5 19,0 18,5 18,5 19,0 19,5 23 18,5 19,5 19,0 18,0 18,5 19,0 19,5 24 18,5 19,5 18,5 18,0 18,5 18,5 19,5 25 18,5 19,0 18,5 18,0 18,0 18,5 19,0 26 18,5 19,0 18,5 18,0 18,0 18,0 19,0 27 18,5 19,0 18,0 17,5 18,0 18,0 19,0 28 18,5 18,5 18,0 17,5 18,0 18,0 19,0 29 18,0 18,5 18,0 17,5 17,5 18,0 19,0 30 18,0 18,5 18,0 17,5 17,5 18,0 18,5 35 18,0 18,5 17,5 17,5 17,5 18,0 18,5 40 18,0 18,0 17,5 17,0 17,5 17,5 18,5 45 17,5 18,0 17,0 17,0 17,5 17,5 18,5 50 17,5 18,0 17,0 17,0 17,0 17,5 18,0 55 17,5 18,0 16,5 17,0 17,0 17,5 18,0 60 17,5 18,0 16,5 17,0 17,0 17,5 18,0 * bistra otopina <strong>iz</strong>nad taloga magnezijeva hidr<strong>oksid</strong>a 67
Kod navedenih ispitivanja masena koncentracija čvrste faze u suspenziji <strong>iz</strong>nosila je 5,768 g dm -3 magnezijeva hidr<strong>oksid</strong>a. Razlike u ponašanju tijekom pojedine serije ispitivanja posljedica su različite količine dodanog flokulanta 831A. 45 43 41 39 37 35 3,8 cm3 3,9 cm3 4,0 cm3 4,1 cm3 4,2 cm3 4,3 cm3 4,4 cm3 33 Z / mm 31 29 27 25 23 21 19 17 15 0 5 10 15 20 25 30 35 40 45 50 55 60 t / min Slika 17. Ovisnost visine taloga, Z, o vremenu sedimentacije, t, pri nestehiometrijskom 80 %-tnom načinu taloženja, uz različite količine dodanog flokulanta 831A Iz grafičkog prikaza (slika 17) ovisnosti visine taloga magnezijeva hidr<strong>oksid</strong>a o vremenu sedimentacije za sve ispitivane količine flokulanta 831A (3,8; 3,9; 4,0; 4,1; 4,2; 4,3; 4,4 cm 3 ) pri nestehiometrijskom 80 %-tnom načinu taloženja dolomitnim vapnom, uočava se da su postignuti optimalni rezultati uz dodatak 4,1 cm 3 flokulanta 831A / 500 cm 3 <strong>morske</strong> <strong>vode</strong>. 68
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Prof. dr. sc. Vanja Martinac MAGNEZ
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Izdavač: Kemijsko-tehnološki faku
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Najtoplije zahvaljujem recenzentima
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str. 2.6. BOROV (III) OKSID U MAGNE
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1.1. PROBLEMI RACIONALNOG NAČINA K
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(200 + x) morskih milja 200 morskih
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u atmosferi 13 vlažno tlo 100 pada
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Ova vrijednost podložna je značaj
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zaliha nafte i plina, od čega se u
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Tablica 2. Statistički pregled sad
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Istovremeno, svjetska mora, naroči
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Montičelit (CaMgSiO 4 ) i mervinit
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oksida, npr. CaO i Na 2 O, snizuje
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plinovitoj fazi vrlo značajan za d
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objasniti time da Al 3+ ioni mogu u
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Primjerice: - u temperaturnom podru
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Dodatak w = 0,2 % TiO 2 (u obliku a
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LITERATURA Alvarado E., Torres-Mart
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Hraste M., Mehaničko procesno inž
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Martinac V., Labor M., Gadžo Z., P
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Pilson M. E. Q., An Introduction to