We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Variability in the solubility of agricultural limestone from different sources and its pertinence for aquaculture.
- Authors
Sa, Marcelo Vinicius do Carmo e; Boyd, Claude E
- Abstract
Samples of agricultural limestone were obtained from quarries in the USA as follows: Talking Rock, GA; Whitestone, GA; Austinville, VA; Bonham, TX; and Thomasville, PA, referred as GA-1, GA-2, VA, TX and PA respectively. The limestone products were tested initially for non-equilibrium pH, concentrations of calcium and magnesium, neutralizing value ( NV) and fineness rate. Laboratory solubility test of the products was conducted in which pH, specific conductance ( SC), total alkalinity ( TA), total and calcium hardness were measured weekly for 9 weeks. It was found that the agricultural limestone samples had comparable chemical compositions, that is NV (97-108%), Ca (19.8-32.1%), Mg (3.2-12.2%), pH of slurry (8.1-9.7), but somewhat different solubilities in water. Total alkalinity concentrations at equilibrium ranged from 30 to 60 mg L−1. It was possible to quickly estimate the relative solubility of different agricultural limestone samples by comparing their specific conductance under standardized conditions (2.0 g samples w/0.15-0.25 mm fineness; 3.5 L distilled water; 24 h). This procedure might be helpful in achieving better results when liming aquaculture ponds, that is choosing the agricultural limestones with the highest solubilities in water.
- Subjects
WATER quality; CALCIUM carbonate; LIMESTONE; AQUACULTURE; AQUATIC liming
- Publication
Aquaculture Research, 2017, Vol 48, Issue 8, p4292
- ISSN
1355-557X
- Publication type
Article
- DOI
10.1111/are.13250