Enhancing bauxite residue properties for plant growth: Gypsum and organic amendment effects on chemical properties of soil and leachate

• Published in: Journal of environmental management Vol. 337; p. 117721
• Main Authors: Miura, Yuuki Silveira, Mulder, Jan, Zivanovic, Valentina, Courtney, Ronan, Okkenhaug, Gudny
• Format: Journal Article
• Language: English
• Published: England Elsevier Ltd 01.07.2023
• Subjects: Aluminum; Aluminum Oxide - chemistry; arsenic; bauxite; Bauxite residue; Brazil; Calcium Sulfate - chemistry; chemical composition; electrical conductivity; environmental management; exchangeable sodium; Gypsum; leachates; Leaching; Metals - chemistry; Organic waste; organic wastes; plant growth; Remediation; Sodium; Soil - chemistry; Soil Pollutants - chemistry; vanadium; Brazil; Gypsum; Organic waste; Bauxite residue; Remediation; Leaching

Here, we assess the effects of gypsum and local organic waste as amendments to non-weathered, filter-pressed bauxite residue (BR) to improve its properties and support plant growth. In addition, we monitored the leachate quality of the amended BR under progressive leaching that simulated precipitati...