Chemical characterization and evaluation of composts as organic amendments for immobilizing cadmium
Abstract
The ability of three composted materials to immobilize cadmium (Cd) was examined in order to assess their potential for recovering soils contaminated with this metal. Composted pine bark (PB) pH 5.6, spent mushroom compost (SM) pH 8.0, and composted pruning waste+biosolids (BS) pH 6.9 (containing 81%, 75% and 47% total organic matter, respectively) were characterized. FT-IR and CP-MAS (13)C NMR spectroscopy indicated the BS and SM to have a higher percentage of aliphatic and carboxyl groups than PB. The composts were artificially contaminated with Cd (80 and 200 mg kg(-1)) and, after 4 weeks incubation, subjected to sequential extraction. In column leaching experiments, the total Cd leached from the composts exposed to both Cd treatments was similar, but much less leached from the BS (0.2%) than the PB (4.0%) or SM (0.7%). The greater capacity of BS to immobilize Cd was attributed to the greater humification of its organic matter and higher content of inorganic components, particularly Fe.
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Composted biosolids can immobilize Cd more than composted pine bark and spent mushroom compost in Cd-contaminated soils.
“A leaching column experiment conducted on Cd-contaminated soils (80 and 200 mg kg) showed that composted biosolids can immobilize Cd more than composted pine bark and spent mushroom compost (Tapia et al., 2010).”
From Soil amendments for immobilization of potentially toxic elements in contaminated soils: A critical review (2020) · cites this paper as Tapia et al., 2010
Greater humification of organic matter and higher inorganic component contents such as Fe in biosolids facilitated Cd immobilization.
“The study concluded that greater humification of OM and higher inorganic component contents, such as Fe, in the biosolids facilitated Cd immobilization (Tapia et al., 2010).”
From Soil amendments for immobilization of potentially toxic elements in contaminated soils: A critical review (2020) · cites this paper as Tapia et al., 2010
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References 44 · Cited by 74
- Authors
- Tapia, Y., Cala, V., Eymar, E., Frutos, I., Gárate, A., & Masaguer, A.
- Affiliations
- Universidad Autónoma de Madrid (ES)
- Universidad Politécnica de Madrid (ES)
- Corresponding author
- Tapia, Y.
- Venue
- Bioresource Technology
- Publisher
- Elsevier BV
- Published
- 2010-07
- Volume
- 101
- Issue
- 14
- Pages
- 5437-5443
- ISSN
- 0960-8524 (ISSN-L)
- OpenAlex
- W1998736765
- Cited by
- 74
- References
- 44
- Citations by year
- 2026: 1 · 2025: 3 · 2024: 1 · 2023: 7 · 2022: 2 · 2021: 6 · 2020: 2 · 2019: 6 · 2018: 6 · 2017: 4 · 2016: 13 · 2015: 6 · 2014: 5 · 2013: 5 · 2012: 3
- FWCI
- 3.79
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Bioresource Technology (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Physical Sciences › Environmental Science › Pollution › Heavy metals in environment
- Life Sciences › Agricultural and Biological Sciences › Soil Science › Composting and Vermicomposting Techniques
- Physical Sciences › Environmental Science › Water Science and Technology › Adsorption and biosorption for pollutant removal
- Keywords
- cadmium immobilization, compost, organic amendments, biosolids, spent mushroom substrate, pine bark, pruning residues, soil contamination, heavy metal leaching, humification, iron, sequential extraction, column leaching, chemical characterization
- MeSH terms
- Agriculture, Biotechnology, Cadmium, Chemistry, Organic, Chemistry, Physical, Electric Conductivity, Hydrogen-Ion Concentration, Iron, Metals, Magnetic Resonance Spectroscopy, Refuse Disposal, Soil, Soil Pollutants, Spectrophotometry, Spectroscopy, Fourier Transform Infrared
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