Essays about: "H2S"

Showing result 1 - 5 of 23 essays containing the word H2S.

1. 1. System concept for small-scale biological methanation using electrolysis and trickle bed reactor : with the aim of upgrading biogas to vehicle fuel quality

   University essay from SLU/Dept. of Energy and Technology

   Author : Gustav Larsson; [2021]
   Keywords : biological methanation; biogas upgrade; methane; small-scale methanation;

   Abstract : In the present study, the concept of a biological H2 methanation (BHM) system was created for four cases of scale which are determined by electrolyser scale. The system design is aimed to upgrade existing biogas to vehicle fuel quality, with a concentration of CH4 above 95% and H2S removal. The cases of scale and type of electrolyser are: 4. READ MORE

3. 2. Stabilizing biogas processes at high ammonia : effects of acetate pulse-feeding on the microbial population

   University essay from SLU/Department of Molecular Sciences

   Author : Oscar Dolk; [2020]
   Keywords : biogas; anaerobic digestion; ammonia inhibition; acetate enrichment;

   Abstract : This study investigated the problem of ammonia inhibition in biogas reactors, commonly occurring when protein rich substrates are used in anaerobic digestion processes. Ammonia inhibition is one of the foremost causes of failure in anaerobic digestion, leading to process instability, with symptoms commonly expressed as; reduction in biogas produced, decreased methane content in the gas and accumulation of volatile fatty acids. READ MORE

4. 3. Small-scale biogas : A techno-economic comparison of Internal Combustion Engines, Micro Gas Turbines and Stirling Engines

   University essay from KTH/Skolan för industriell teknik och management (ITM)

   Author : Emil Sund; [2020]
   Keywords : ;

   Abstract : Gas driven power generation is expected to increase in the near future due to significantly lesser environmental impact than oppose to conventional fuels like coal and oil. Today, Natural Gas (NG) is the dominant product on the market and biogas, which originates from degradable organic waste, has not reached its full market potential due to bottlenecks in utilization. READ MORE

5. 4. Sputtering of High Quality Layered MoS2 films

   University essay from Uppsala universitet/Fasta tillståndets elektronik

   Author : Sari Abid Al Shaybany; [2020]
   Keywords : MoS2; molybdenum; molybdenum disulfide; sputtering; magnetron sputtering; high quality; sulfur; H2S; argon; pressure; temperature; high temperature; monolayer; few layers; large scale;

   Abstract : We have deposited bulk, monolayer and few-layers as well as large-scale 2D layered MoS2 thin films by pulsed DC magnetron sputtering from an MoS2 target. MoS2 has gained great attention lately, together with other layered Transition Metal Dichalcogenides (TMDCs), for its unique optical and electrical properties with thickness-dependent bandgap. READ MORE

6. 5. Performance monitoring of systems for airpuricationAuthor:Anders

   University essay from KTH/Skolan för kemi, bioteknologi och hälsa (CBH)

   Author : Anders Gustafson; [2019]
   Keywords : ;

   Abstract : Wastewater treatment plants (WWTP) are often the cause of malodor. The compounds which are the main causes of the odor is hydrogen sulfide (H2S), ammonia(NH3), mercaptans (RSH) and volatile organic compounds (V OC) [1]. The odorous air can be analyzed to determine the concentration of the odorants. READ MORE