Environmentally acceptable effect of hydrogen peroxide on cave â€œlamp-floraâ€, calcite speleothems and limestones
- Permanent Link:
- Environmentally acceptable effect of hydrogen peroxide on cave â€œlamp-floraâ€, calcite speleothems and limestones
- Series Title:
- Environmental Pollution
- Faimon, JiÅ™í
Å telcl, JindÅ™ich
- Publication Date:
- Subjects / Keywords:
- Cave ( local )
Dissolution ( local )
Hydrogen Peroxide ( local )
Kinetics ( local )
Lamp-Flora ( local )
- serial ( sobekcm )
- 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 KateÅ™inská 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 3.77×10âˆ’3 and 1.81×10âˆ’3 mol mâˆ’2 hâˆ’1, respectively. In the 15% peroxide solution, the limestone and speleothem dissolution rates were one order of magnitude higher, 2.00×10âˆ’2 and 2.21×10âˆ’2 mol mâˆ’2 hâˆ’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.
- Original Version:
- Environmental Pollution, Vol. 122, no. 3 (2003-04).
- Source Institution:
- University of South Florida Library
- Holding Location:
- University of South Florida
- Rights Management:
- This object is protected by copyright, and is made available here for research and educational purposes. Permission to reuse, publish, or reproduce the object beyond the bounds of Fair Use or other exemptions to copyright law must be obtained from the copyright holder.
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