2003
Environmentally accetable effect of hydrogen peroxide on cave "lamp-flora", calcite speleothems and limestones
FAIMON, Jiří, Jindřich ŠTELCL, Svatava KUBEŠOVÁ a Jiří ZIMÁKZákladní údaje
Originální název
Environmentally accetable effect of hydrogen peroxide on cave "lamp-flora", calcite speleothems and limestones
Název česky
Environmentálně přijatelný účinek paroxidu vodíku na jeskynní lampenflóru, kalcite a vápence
Název anglicky
Environmentally accetable effect of hydrogen peroxide on cave "lamp-flora", calcite speleothems and limestones
Autoři
FAIMON, Jiří (203 Česká republika, garant), Jindřich ŠTELCL (203 Česká republika), Svatava KUBEŠOVÁ (203 Česká republika) a Jiří ZIMÁK (203 Česká republika)
Vydání
Environmental Pollution, Elsevier, 2003, 0269-7491
Další údaje
Jazyk
čeština
Typ výsledku
Článek v odborném periodiku
Obor
Geochemie
Stát vydavatele
Česká republika
Utajení
není předmětem státního či obchodního tajemství
Impakt faktor
Impact factor: 2.002
Kód RIV
RIV/00216224:14310/03:00030516
Organizační jednotka
Přírodovědecká fakulta
UT WoS
000181539500011
Klíčová slova anglicky
Cave; Dissolution; Hydrogen peroxide; Kinetics; Lamp-flora
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 23. 9. 2009 15:38, doc. Ing. Jiří Faimon, Dr.
V originále
Mosses, algae, and cyanobacteria (lamp-flora) colonize illuminated areas in show caves. This biota is commonly removed by a sodium hypochlorite solution. Because chlorine and other deleterious compounds are released into a cave environment during lamp-flora cleansing, hydrogen peroxide was tested as an alternative agent. In a multidisciplinary study conducted in the Katerinska Cave (Moravian Karst, Czech Republic), 12 algae- and cyanobacteria taxons and 19 moss taxons were detected. The threshold hydrogen peroxide concentration for the destruction of this lamp-flora was found to be 15 vol.%. Based on laboratory experiments in stirred batch reactors, the dissolution rates of limestones and calcite speleothems in water were determined as 3.77E-3 and 1.81E-3 mol m-2 h-1, respectively. In the 15% peroxide solution, the limestone and speleothem dissolution rates were one order of magnitude higher, 2.00E-2 and 2.21E-2 mol m-2 h-1, respectively. So, the peroxide solution was recognised to attack carbonates somewhat more aggressively than karst water. In order to prevent the potential corrosion of limestone and speleothems, the reaching of preliminary peroxide saturation with respect to calcite is recommended, for example, by adding of few limestone fragments into the solution at least 10 h prior to its application.
Anglicky
Mosses, algae, and cyanobacteria (lamp-flora) colonize illuminated areas in show caves. This biota is commonly removed by a sodium hypochlorite solution. Because chlorine and other deleterious compounds are released into a cave environment during lamp-flora cleansing, hydrogen peroxide was tested as an alternative agent. In a multidisciplinary study conducted in the Katerinska Cave (Moravian Karst, Czech Republic), 12 algae- and cyanobacteria taxons and 19 moss taxons were detected. The threshold hydrogen peroxide concentration for the destruction of this lamp-flora was found to be 15 vol.%. Based on laboratory experiments in stirred batch reactors, the dissolution rates of limestones and calcite speleothems in water were determined as 3.77E-3 and 1.81E-3 mol m-2 h-1, respectively. In the 15% peroxide solution, the limestone and speleothem dissolution rates were one order of magnitude higher, 2.00E-2 and 2.21E-2 mol m-2 h-1, respectively. So, the peroxide solution was recognised to attack carbonates somewhat more aggressively than karst water. In order to prevent the potential corrosion of limestone and speleothems, the reaching of preliminary peroxide saturation with respect to calcite is recommended, for example, by adding of few limestone fragments into the solution at least 10 h prior to its application.
Návaznosti
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