As part of the "HoFaTo" project, the use of nitrogen-enriched lignins, modified through the ammoxidation process, is being examined to develop sustainable peat-free substrates for horticulture. The ammoxidation process combines the oxidation of lignins through oxygen (O2) with a nitrogen incorporation from ammonia (NH3).
This study investigates the effect of ammoxidation on nitrogen enrichment in lignins and its impact on plant growth. The results show that ammoxidation of lignins such as organocell lignin (OCL) and kraft lignin (KL) can enhance amide nitrogen content, leading to positive effects on plant growth. However, it also becomes clear that a further optimization of ammoxidation conditions is necessary to achieve a high level of medium-term nitrogen release, which is beneficial for horticultural substrates. This research contributes to the development of peat alternatives that promote the use of renewable resources while meeting plant nutrient needs.
Contact:
More Informations:
Link to article on the homepage of De Gruyter Brill
To Thuenen project page: Wood Fibers as peat substitutes
