Essays about: "Volatile Organic Compounds"

Showing result 41 - 45 of 52 essays containing the words Volatile Organic Compounds.

1. 41. Investigation of possible non-additive behavior in the formation of secondary organic aerosol from a mixture of anthropogenic and biogenic VOC precursors

   University essay from Lunds universitet/Kärnfysik; Lunds universitet/Fysiska institutionen

   Author : John Falk; [2014]
   Keywords : Volatile organic compounds; Biogenic; Anthropogenic; Secondary organic aerosol; Non-additive; Flow reactor; Scanning Mobility Particle Sizer; Earth and Environmental Sciences;

   Abstract : Secondary organic aerosol (SOA) mass yields were tested for six combinations of two anthropogenic volatile organic compounds (AVOC); m-xylene & toluene, and three biogenic volatile organic compounds (BVOC); α-pinene, myrcene & isoprene. The purpose was to investigate any non-additive results in SOA formation from mixtures of AVOCs and BVOCs by comparing experimental yield with corresponding two-product model yields. READ MORE

3. 42. Anaerobic Digestion of Fractionated and Non-fractionated Sugar Beet Tops

   University essay from Lunds universitet/Bioteknik; Lunds universitet/Kemiska institutionen

   Author : Johan Lindgren; [2014]
   Keywords : Anaerobic Digestion; Biogas; Biotechnology; Bioteknik; Technology and Engineering;

   Abstract : Continuous stirred tank reactors (CSTR) and batch reactors were used to examine the difference in methane yields and process stability between fractionated and non-fractionated sugar beet leaves. The hypothesis of this project was that by reducing the amount of juice in the sugar beet leaves the amount of soluble sugars and other easily fermented compounds in the substrate will also decrease, and thereby lead to higher process stability. READ MORE

4. 43. Biogenic volatile organic compound emissions from Willow trees

   University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

   Author : Md. Ahsan Mozaffar; [2013]
   Keywords : atmosphere; Salix; Willow; biogenic volatile organic compounds; Isoprene; climate; BVOC; geography; physical geography; Earth and Environmental Sciences;

   Abstract : In August 2012, emissions of biogenic volatile organic compounds (BVOCs) from willow (Salix) trees were measured in Lund, southern Sweden. Sweden has more than 16000 ha of short rotation willow plantations for biofuel production and willow trees are suspected to emit substantial amounts of BVOC to the atmosphere. READ MORE

5. 44. Chemical analysis for mapping of soot reactivity

   University essay from KTH/Skolan för kemivetenskap (CHE)

   Author : Henrik Pettersson; [2013]
   Keywords : diesel soot; reactivity; oxidation; rail pressure; EGR; TGA; SEM; EDS;

   Abstract : In order to increase the efficiency of diesel particulate filter regeneration more knowledge about diesel soot and its reactivity is required. This thesis compares soot created during accelerated filter loading by lowered rail pressure, with soot from normal filter loading. READ MORE

6. 45. Emissions of biogenic volatile organic compounds in a Salix biofuel plantation : field study in Grästorp (Sweden)

   University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

   Author : Malin Broberg; [2013]
   Keywords : Salix; biogenic volatile organic compounds; BVOC; willow; atmosphere; soil; physical geography; Earth and Environmental Sciences;

   Abstract : Biogenic volatile organic compounds (BVOCs) play an important role in the climate system by altering the oxidative capacity of the atmosphere, affecting the lifetime of methane and production of tropospheric ozone, and by contributing to formation of aerosols and clouds. Salix plants (willows) are well-documented emitters of BVOCs and this study aims to examine emissions in a Salix biofuel plantation for a better understanding of its total climate impact. READ MORE