Wastewater

• SA/RP: Mobilisation of (microplastic)particles on and infiltration into permeable pavements depending on the rainfall intensity and duration
  Tasks:

  - Description of the particle mobilisation mechanisms on the surface.
  - Which parameters are (also) important for the water driven transport of particles?
  - How can maintenance measures influence the mobilisation/vertical penetration/removal of particles?
  

  Type of work:

  Seminararbeit or Research Project

  Supervisor:

  Kim Zieseniß

  Kontakt

Solid Waste and Circular Economy

• MA: Investigation and optimization of biochar adsoption capacity for heavy metals and inert COD removal from landfill leachate by using response surface methodology
  Tasks:

  • Literature review on the existing leachate treatment technologies considering biological (aerobic/anaerobic) and physical/chemical treatment options
  • Literature review on biochar adsorption for the removal of heavy metals and inert COD in wastewater
  • Brief description of response surface methodology (RSM) for experimental design optimization
  • Develop model equations for removal efficiency of heavy metals and inert COD
  • Recommendation of an investigation protocol for laboratory tests on the use of biochar in the removal of heavy metals ad inert COD

   

  Type of work:

  Master thesis

  Supervisor:

  Thanh Nguyen

  Contact
• RP/SA/MA: Multi-variate principal component analysis of transition bio-chars using MID-IR ATR
  Background:

  As part of an Indo-German Research Project, the institute is doing a detailed research on biochar characteristics from complex substrates. As part of this, IR spectroscopy is to be deployed for a quantification of principal components using statistical/chemometric techniques like PLS and PCR. The work would start as a project arbeit, which can then progress on to a masters thesis.

  Type: RP/SA/MA

  Language: English

  Pre-requisites: Good knowledge in chemistry, and Matlab.

  Supervisor: Rahul Ramesh Nair M.Sc

  Contact email for applications: Hanna Schäfer <schaefer@isah.uni-hannover.de>

• PA/RP/MA: Up-scaling of anaerobic processes
  -Familiarization with dimensional analysis

  -Comparison of methods

  -Assessment and applicability

  Type of Work:

  Projektarbeit/Research Project/Master Thesis (German/English)

  Supervisor:

  PD Dr.-Ing. habil. Dirk Weichgrebe

  Contact
• MA:Development of a design approach for the solar drying of organic residue mixtures
  -Combination of algorithms for biological drying, convection and radiation

  -Investigation of influencing parameters (radiation, degradability, heat transfer, surface area, humidity, etc.)

  -Statements on the dimensioning of a solar dryer

  Type of work:

  Master Thesis (German/English)

  Supervisor:

  PD Dr.-Ing. habil. Dirk Weichgrebe

  Contact
• MA:Planning of a semi-technical pilot plant for digestion of natural fibres and biogas production from shives
  -Process representation

  -Dimensioning on the basis of the preliminary investigations

  -Concept planning at the location of an existing BGP

  Type of work:

  Master Thesis (German/English)

  Supervisor:

  PD Dr.-Ing. habil. Dirk Weichgrebe

  Contact
• RP/BA/MA: Anaerobic degradation experiments for (natural) fibre extraction from hemp plants
  -Literature research on the potential of hemp plant cultivation

  -Laboratory experiments

  -Evaluation of the test results with regard to fiber quality

  Type of work:

  Research Project/Bachelor Thesis/Master Thesis (German/English)

  Supervisor:

  PD Dr.-Ing. habil. Dirk Weichgrebe

  Contact
• RP/BA/MA:Anaerobic degradation tests of hemp and oil-injected shives for biogas production
  -Literature research on potential

  -Laboratory experiments

  -Evaluation of the test results with regard to biogas yield

  Type of workt:

  Research Project/Bachelor Thesis/Master Thesis (German/English)

  Supervisor:

  PD Dr.-Ing. habil. Dirk Weichgrebe

  Contact
• PA/BA/RP/MA:Thermodynamic evaluation of the external heat supply during solar sewage sludge drying PA/RP/BA/MA:
  - Literature research of sources and potential for external heat sources

  - Thermodynamic analysis and energetic evaluation

  Type of work:

  Projektarbeit/Bachelor Thesis/Research Project/Master Thesis (German/English)

  Supervisor:

  PD Dr.-Ing. habil. Dirk Weichgrebe

  Contact
• PA/BA/RP/MA:Fatty acid extraction from anaerobic reactors
  - Literature research on methods

  - Comparison of methods

  - Assessment and applicability

  Type of Work:

  Projektarbeit/Bachelor Thesis/Research Project/Master Thesis (German/English)

  Supervisor:

  PD Dr.-Ing. habil. Dirk Weichgrebe

  Contact
• RP/MA: Comparative Analysis of Power Conversion Technologies to utilize low temperature heat from waste biomass pyrolysis
  -Literature Review and Prozess evaluation regarding available Power Conversion Technologies from Heat

  -Comparative Analysis of Power Conversion Technologies with respect to multiple selection criteria (e.g. Expenses, Efficiency, Environmental Impact)

  -Development of a module concept to include the selected power conversion technology in an existing pyrolysis process of waste biomass

  Type of work:

  Research Project/Master Thesis (German/English)

  Supervisor:

  PD Dr.-Ing. habil. Dirk Weichgrebe

  Contact

Microbiology

• MA: Quantitative Microbial Risk Assessment (QMRA) of decentralized stormwater management structures
  Work contents:

  • Perform field observations to determine time and type of water exposure at each location, including water fountains
  • Possibility of lab work to analyze presence of pathogens in the water samples (probably during summer season)
  • Data tabulation and statistical analysis
  • Perform a risk analysis for swales and stormwater retention tanks

   

  Type of work:

  Master thesis (english)

  Contact person:

  Estefania Carpio

  carpio@isah.uni-hannover.de

Drinking Water