A blog from University of Borås

Thursday, February 21, 2019

PhD thesis: New plates and films from apple pomace and citrus wastes

Do you like orange or apple juice? Do you know while making those juices, half of the apple or orange weight is ended in the wastes? There are some research about these materials to convert it to e.g. ethanol or biogas. On the other hand, there is large global problem with plastics in the world.  Therefore, Veronika Batori tried to produce some replacement for plastics from citrus wastes and apple pomace, and she worked to make new materials and biofilms out of them in her PhD thesis that has title "Fruit wastes to biomaterials: Development of biofilms and 3D objects in a circular economy system". She published several papers is defending her thesis tomorrow. We wish her good luck!

The papers are about:

  1. Production of pectin-cellulose biofilms: A new approach for citrus waste recycling
  2. Synthesis and characterization of maleic anhydride-grafted orange waste for potential use in biocomposites
  3. Anaerobic degradation of bioplastics: a review
  4. The effect of glycerol, sugar and maleic anhydride on the mechanical properties of pectin-cellulose based biofilms produced from orange waste
  5. Development of Bio-Based Films and 3D Objects from Apple Pomace



Sunday, January 6, 2019

Flaring natural gas and producing biogas?

Russia, Iraq, Iran and USA flared (or just burned) natural gas in one year 19.9, 17.8, 17.7 and 9.5 billion m3, respectively. It means these four countries burned 2058 m3 natural gas every second. It results in 127 million tons of CO2 per year that goes to atmosphere and its energy content that is lost is 714 TWh or 61 million tones oil equivalent (mtoe). These numbers can be compared with the total energy production from biofuels and wastes in the world that is ca 132 mtoe after all the efforts in the world. It is a disappointing fact where politicians put political disputes before environmental disasters  and human life.