| Title |
Thermochemical processing of boron-impregnated cellulose insulation waste for upcycling to slow-release boron fertilizers |
| ID_Doc |
26778 |
| Authors |
Everaert, M; Duboc, O; Willems, E; Soja, G; Pfeifer, C; Van Velthoven, N; de Oliveira-Silva, R; Sakellariou, D; Santner, J |
| Title |
Thermochemical processing of boron-impregnated cellulose insulation waste for upcycling to slow-release boron fertilizers |
| Year |
2023 |
| Published |
|
| DOI |
10.1016/j.jclepro.2023.136684 |
| Abstract |
Boron (B) fertilizers are essential for global crop production. Sustainable B use demands a higher efficiency of B fertilizers through controlled B release and an enhanced B recycling from secondary sources, e.g. B-impregnated cellulose fiber insulation (CFI) waste. In this study, thermochemical treatments based on combustion and py-rolysis were investigated for processing CFI waste into a slow-release B fertilizer. Hot-water extractions of ob-tained materials confirmed that slow-release properties were achieved, and material characterization with XRD, FTIR and 11B-NMR showed that these were largely the result of formation of sparingly soluble Ca-B phases. A seedling toxicity test with fodder rape demonstrated the benefit of this slow-release B in comparison with conventional soluble B to circumvent toxicity, suggesting potential for B application via seed coatings. Finally, a fertilization trial with fodder rape and poppy seed showed that most slow-release B compounds were equally effective as soluble B at recommended B doses, while slow-release B can still benefit from reduced B leaching losses. |
| Author Keywords |
Boron fertilizer; Circular economy; Construction waste; Micronutrients; Nutrient recycling; Slow-release fertilizer |
| Index Keywords |
Index Keywords |
| Document Type |
Other |
| Open Access |
Open Access |
| Source |
Science Citation Index Expanded (SCI-EXPANDED) |
| EID |
WOS:000955838300001 |
| WoS Category |
Green & Sustainable Science & Technology; Engineering, Environmental; Environmental Sciences |
| Research Area |
Science & Technology - Other Topics; Engineering; Environmental Sciences & Ecology |
| PDF |
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