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Abstract
Biochar can be an effective carrier for microbial inoculants because of its favourable properties promoting microbial life. In this review, we assess the effectiveness of biochar as a microbial carrier for agricultural and environmental applications. Biochar is enriched with organic carbon, contains nitrogen, phosphorus, and potassium as nutrients, and has a high porosity and moisture-holding capacity. The large number of active hydroxyl, carboxyl, sulfonic acid group, amino, imino, and acylamino hydroxyl and carboxyl functional groups are effective for microbial cell adhesion and proliferation. The use of biochar as a carrier of microbial inoculum has been shown to enhance the persistence, survival and colonization of inoculated microbes in soil and plant roots, which play a crucial role in soil biochemical processes, nutrient, and carbon cycling, and soil contamination remediation. Moreover, biochar-based microbial inoculants including probiotics effectively promote plant growth and remediate soil contaminated with organic pollutants. These findings suggest that biochar can serve as a promising substitute for non-renewable substrates, such as peat, to formulate and deliver microbial inoculants. The future research directions in relation to improving the carrier material performance and expanding the potential applications of this emerging biochar-based microbial immobilization technology have been proposed.
Original language | English |
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Article number | 163968 |
Journal | Science of the Total Environment |
Volume | 886 |
DOIs | |
Publication status | Published - 15 Aug 2023 |
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Healthy Environments and Lives (HEAL)
Wyrwoll, C., Vardoulakis, S., Le Souef, P., Bolan, N., Prescott, S., Ecker, U., Maloney, S., Pauli, N., Nannup, N. & Farrant, B.
NHMRC National Health and Medical Research Council
1/08/22 → 31/12/27
Project: Research