Lead Retention by Broiler Litter Biochars in Small Arms Range Soil: Impact of Pyrolysis Temperature

• Published in: Journal of agricultural and food chemistry 2012-05, Vol.60 (20), p.5035-5044
• Main Authors: Uchimiya, Minori, Bannon, Desmond I, Wartelle, Lynda H, Lima, Isabel M, Klasson, K. Thomas
• Format: Article
• Language: English
• Subjects: acetates; acid soils; Animals; antimony; bioavailability; biochar; Biological and medical sciences; buffers; calcium; Charcoal - chemistry; chemical composition; Chickens; copper; Drug Stability; Environmental Restoration and Remediation - methods; Feeding. Feeding behavior; fertilizers; Firearms; Food industries; Fundamental and applied biological sciences. Psychology; glycine (amino acid); heavy metals; Hydrogen-Ion Concentration; leaching; lead; Lead - analysis; magnesium; Manure; nutrients; phosphorus; Phosphorus - chemistry; pollutants; potassium; poultry manure; pyrolysis; rain; risk; sand fraction; sandy soils; Silicon Dioxide; sodium; Soil - analysis; Soil Pollutants - analysis; soil pollution; sulfuric acid; Temperature; toxicity; Vertebrates: anatomy and physiology, studies on body, several organs or systems; zinc
• ISSN: 0021-8561; 1520-5118
• DOI: 10.1021/jf300825n

Phosphorus-rich manure biochar has a potential for stabilizing Pb and other heavy metal contaminants, as well as serving as a sterile fertilizer. In this study, broiler litter biochars produced at 350 and 650 °C were employed to understand how biochar’s elemental composition (P, K, Ca, Mg, Na, Cu, Pb, Sb, and Zn) affects the extent of heavy metal stabilization. Soil incubation experiments were conducted using a sandy, slightly acidic (pH 6.11) Pb-contaminated (19906 mg kg–1 total Pb primarily as PbCO3) small arms range (SAR) soil fraction (