Volker Hessel,
Professor,,
The University of Adelaide
Prof. Volker Hessel studied chemistry at Mainz University/D. 1994: Institut für Mikrotechnik Mainz/Germany (Director R&D); 2005: Professor Eindhoven University of Technology/NL; 2018: Deputy Dean (Research), Professor University of Adelaide, Australia; 2019: part-time professor University of Warwick/UK.
He is author of 678 peer-reviewed publications (h-index: 90; >37,000 citations). He received the AIChE Excellence in Process Development Research Award, IUPAC ThalesNano Prize in Flow Chemistry. He is program lead in the ARC Centre of Excellence Plants for Space (P4S), and is Research Director of the Andy Thomas Centre for Space Resources. He received several EU’s research excellence grants (ERC Advanced/Proof of Concept/Synergy, FET OPEN). He is a member on the College of Experts for the National Research Foundation (NRF) within the Prime Minister’s Office”.
Flow Synthesis of Phosphorus Composites for Enhancing P Availability in Soil
Tuesday, 28 March 2023 at 17:00
Add to Calendar ▼2023-03-28 17:00:002023-03-28 18:00:00Europe/LondonFlow Synthesis of Phosphorus Composites for Enhancing P Availability in SoilFlow Chemistry European Summit 2023 in Rotterdam, The NetherlandsRotterdam, The NetherlandsSELECTBIOenquiries@selectbiosciences.com
Microfluidic devices operated in continuous-flow, due to their high surface-to-volume ratio, good mixing, etc. enhance the mass transfer coefficient, reduce waste, and provide more benefits. The complexity of the synthesis of composite nanomaterials makes it a good test case for such advanced engineering. In this context, a composite P fertilizer is prepared by a coiled flow inverter (CFI). The reaction was based on the precipitation of Ca2+ and PO43- in an alkaline media with the presence of citrate ions and was conducted as 1-stage synthesis with all solutions injected simultaneously into the CFI. Downstream, a feed containing a chitosan solution was incorporated to form the chitosan-phosphorus-citrate composite. The prepared composites were tested for enhancing the chosen performance parameters: available P in soil and P nutrient use efficiency, including practical glasshouse tests with a wheat variety used by Australian farmers. We also test with industrial flow reactors (Corning Advanced Flow) and with industrial continuous-flow stirred reactors (StoliChem).
Citrate ions play an important role in the fertiliser efficiency of the composite, which motivates to increase the citrate capacity in the final product. The presence of chitosan improves the citrate capacity up to 3 times compared to that without chitosan. At the application rate of 25 kg P/ha, after 14 days of incubation in soil, the prepared material increased the available P in soil by 3 times compared to the control (no fertilizer). Also, the P nutrient use efficiency was 63% while that of a chosen commercial product was 55%. In the soil column experiment, the presence of chitosan in the prepared material allowed the phosphate ion to be released in a more stable manner and reduced nutrient leaking by 50% compared to the commercial product after 23 days.
Add to Calendar ▼2023-03-27 00:00:002023-03-28 00:00:00Europe/LondonFlow Chemistry European Summit 2023Flow Chemistry European Summit 2023 in Rotterdam, The NetherlandsRotterdam, The NetherlandsSELECTBIOenquiries@selectbiosciences.com
Add to Calendar ▼2023-03-28 17:00:002023-03-28 18:00:00Europe/LondonFlow Synthesis of Phosphorus Composites for Enhancing P Availability in SoilFlow Chemistry European Summit 2023 in Rotterdam, The NetherlandsRotterdam, The NetherlandsSELECTBIOenquiries@selectbiosciences.com
