Ali Hassan Ali ABDELAAL Thesis Defense

Address:

University main building - Unibz - Italy

Mr Ali Hassan Ali Abdelaal from the Energy Systems and Environment Department (DSEE) and the GEPEA laboratory, will present his research about :

"Industrial char recoveries in the perspective of circular economy in the wood gasification industry"

 

Thesis defense notice

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Several biomass gasification chars, generated from pilot and commercial scale gasifiers, were studied in order to identify possible uses. The chars were produced in the region of South Tyrol with woodchips and pellets as feedstock. The as-received chars were heterogeneous. It was observed that simple mechanical sieving led to the identification of higher-quality char than the original material. The sieved char had a surface area of 1454 against 647 m2.g−1 for the mixture. The char performance as an adsorbent in water treatment was studied with ibuprofen and paracetamol. The maximum batch adsorption capacity obtained were 297.4 and 323.0 mg.g−1 towards ibuprofen and paracetamol, respectively, which is equivalent to the adsorption capacity of commercial activated carbons. To facilitate the use of powder char in fixed bed columns, beads with chitosan hydrogel were produce. The catalyst proprieties were studied through the tar reforming at both lab and pilot scales. The lab tests were carried out with a synthetic tar mixture with 3 chars. The highest removal efficiency achieved was 54% at 650°C, increase to 72% with steam. Despite showing an excellent performance, it was not possible to use the best-performing char in the pilot scale study due to its powder nature. At the pilot scale, removal efficiency reaches 68% to nearly 100% when steam was used.
This work shows that the best-performing char as adsorbent or as catalyst was the same.

Organizer(s)

As part of the joint thesis accreditation between IMT Atlantique and the SPIN doctoral school and the University main building

 

 

Keywords : Activated carbon, adsorption, catalyst, micropollutants, gasification char

Published on 04.12.2023
 
 
 
 
 
 
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