Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Comparison of mineral acid pretreatments for sulfide removal
Both sulfuric and carbonic acid improved sulfide removal by lowering pH, but only carbonic acid preserved alkalinity and proved less corrosive.
To determine water quality effects on groundwater treatment for hydrogen sulfide, the authors compared sulfuric acid (H2SO4) and carbonic acid for pH adjustment pretreatment in a pilot‐scale (40‐gpm [2.5‐L/s]) randomly oriented packed tower. Pretreatment with either H2SO4 or carbon dioxide (CO2) to pH 6.0 resulted in > 95 percent sulfide removal for tower feedwater sulfide concentrations of 2.5 mg/L. However, utilization of H2SO4 for pH adjustment resulted in a loss of alkalinity in the finished water and an increase in sulfur (as sulfate), whereas CO2 pretreatment preserved alkalinity in the finished water and did not increase sulfur (as sulfate).
Comparison of mineral acid pretreatments for sulfide removal
Both sulfuric and carbonic acid improved sulfide removal by lowering pH, but only carbonic acid preserved alkalinity and proved less corrosive.
To determine water quality effects on groundwater treatment for hydrogen sulfide, the authors compared sulfuric acid (H2SO4) and carbonic acid for pH adjustment pretreatment in a pilot‐scale (40‐gpm [2.5‐L/s]) randomly oriented packed tower. Pretreatment with either H2SO4 or carbon dioxide (CO2) to pH 6.0 resulted in > 95 percent sulfide removal for tower feedwater sulfide concentrations of 2.5 mg/L. However, utilization of H2SO4 for pH adjustment resulted in a loss of alkalinity in the finished water and an increase in sulfur (as sulfate), whereas CO2 pretreatment preserved alkalinity in the finished water and did not increase sulfur (as sulfate).
Comparison of mineral acid pretreatments for sulfide removal
Duranceau, Steven J. (Autor:in) / Anderson, Robert K. (Autor:in) / Teegarden, Robert D. (Autor:in)
Journal ‐ American Water Works Association ; 91 ; 85-96
01.05.1999
12 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Sulfur , Alkalinity , Pilot Plants , Equilibrium , Mass Transfer , Pretreatment , pH , Corrosion , Air Stripping , Hydrogen Sulfide , Carbon Dioxide , Groundwater , Sulfuric Acid , Packed Columns
Plasma pretreatments for Cu-MOCVD
| British Library Online Contents | 2001
Optimized surface pretreatments for copper electroplating
| British Library Online Contents | 2001
Silane based pretreatments for automotive steels
| British Library Online Contents | 2000
| Europäisches Patentamt | 2016
Europäisches Patentamt | 2017