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SELECTBIO Conferences Flow Chemistry Asia 2022

Volker Hessel's Biography

Volker Hessel, Professor, School of Chemical Engineering, The University of Adelaide

Professor Volker Hessel studied chemistry at Mainz University (PhD in organic chemistry, 1993). In 1994 he entered the Institut für Mikrotechnik Mainz GmbH. In 2002, Prof. Hessel was appointed Vice Director R&D at IMM and in 2007 as Director R&D. In 2005 and 2011, Prof. Hessel was appointed as Part-time and Full Professor at Eindhoven University of Technology, respectively. He was Honorary Professor at TU Darmstadt, Germany and is Guest Professor at Kunming University of Science and Technology, China. Prof. Hessel was appointed as Deputy Dean (Research) and Full Professor at the School of Chemical Engineering in the ECMS Faculty at the University of Adelaide, Australia. He is (co-)author of > 450 peer-reviewed (h-index: 54). He received the AIChE Award “Excellence in Process Development Research” in 2007, the ERC Advanced Grant “Novel Process Windows” in 2010, the ERC Proof of Concept Grant in 2017, the IUPAC ThalesNano Prize in Flow Chemistry in 2016, the FET OPEN Grant in 2016, and the ERC Synergy Grant 2018. He was authority in the 35-man teamed Parliament Enquete Commission "Future of the Chemical Industry" in Nordrhine-Westfalia.

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Flow Synthesis of Phosphorus Nanocomposites for Controlled Fertilizer Release and Wheat Growth

Friday, 7 October 2022 at 12:00

Add to Calendar ▼2022-10-07 12:00:002022-10-07 13:00:00Europe/LondonFlow Synthesis of Phosphorus Nanocomposites for Controlled Fertilizer Release and Wheat GrowthFlow Chemistry Asia 2022 in Tokyo, JapanTokyo,

Flow chemistry has shown distinct advantages in the synthesis of nanomaterials. Here, we investigate flow chemistry for the synthesis of nanofertilizers which has been so far less reported in literature. New generations of P fertilizer have been developed in batch synthesis. In 2020, Hessel et al. proposed a process for leaching phosphorus from mimicked moon crust using a re-entrance flow microfluidic device and using this to fertilize lettuce in “space greenhouses”, and recycling phosphate from lettuce root via burning in a furnace.
In this research, a coiled inverted flow system, was used to prepare a slow released P-containing fertilizer and this system also allowed the direct adsorption of low molecular weight organic acid anions (LMWOAs). Citrate ions, as the chosen LMWOAs, were incorporated with the above prepared phosphorus fertiliser to form a compound fertilizer capable of releasing nutrients in a slow manner and reducing the P binding sites in P deficient soil. The nutrient performance was investigated in a model soil mixture. The system allowed the one-stage production of LMWOAs adsorbed apatite with the maximum adsorption capacity of 0.19 gcitrate.gaptite-1 in a continuous manner. The presence of citrate ions in the prepared material increased the P availability in the model soil mixture by 2.6 times compared to commercial apatite. After 14 days of application, about 57% of P in the prepared fertilizer was released into the soil solution.  

We will also report about an extension of the approach here towards nanoencapsulation by chitosan and using more innovative continuous-flow reactor equipment, including the Corning and StoliFlow reactors. We will compare the wheat growth efficiency of the flow-made phosphorus nanofertilizers with plasma-made nitrogen (carbon dot and solution-based) fertilizers, which we also prepare.

Add to Calendar ▼2022-10-06 00:00:002022-10-07 00:00:00Europe/LondonFlow Chemistry Asia 2022Flow Chemistry Asia 2022 in Tokyo, JapanTokyo,