Calcium Extraction from Paper Sludge Ash using Various Solvents to Store Carbon Dioxide

• Published in: KSCE journal of civil engineering Vol. 22; no. 12; pp. 4799 - 4805
• Main Authors: Kim, Dami, Kim, Myoung-Jin
• Format: Journal Article
• Language: English
• Published: Seoul Korean Society of Civil Engineers 01.12.2018; Springer Nature B.V; 대한토목학회
• Subjects: Acetates; Acetic acid; Ammonium; Ammonium acetate; Ammonium chloride; Ammonium compounds; Ammonium salts; Ashes; Atmospheric pressure; Calcium; Carbon dioxide; Chloride; Citric acid; Civil Engineering; Efficiency; Engineering; Environmental Engineering; Experiments; Geotechnical Engineering & Applied Earth Sciences; Hydrochloric acid; Industrial Pollution Prevention; Industrial wastes; Manufacturing; Particle size; Ratios; Raw materials; Salt; Sludge; Sodium; Sodium citrate; Solvents; Temperature; 토목공학; acid; carbon dioxide; indirect carbonation; ammonium salt; sodium citrate; paper sludge ash
• Online Access: Get full text
• ISSN: 1226-7988; 1976-3808
• DOI: 10.1007/s12205-017-0819-z

The purpose of this study is to find the optimum conditions, including the type and concentration of solvent, and the solid/liquid ratio, for the extraction of calcium from Paper Sludge Ash (PSA). Solvents with different properties are divided into the following three groups to conduct the calcium extraction experiments: acid (acetic acid and hydrochloric acid), ammonium salt (ammonium chloride and ammonium acetate), and other (sodium citrate and water). The maximum efficiency of calcium extraction using acid is 54% at a concentration of 0.7 M and solid/liquid ratio of 1:25, while ammonium salt and sodium citrate extract calcium up to 30% and 28%, respectively, at a concentration of 0.3 M and solid/liquid ratio of 1:50.