Christian Ludwig

ORCID: 0000-0002-0718-8195
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About
Contact & Profiles
Research Areas
  • Recycling and Waste Management Techniques
  • Extraction and Separation Processes
  • Algal biology and biofuel production
  • Catalytic Processes in Materials Science
  • Subcritical and Supercritical Water Processes
  • Thermochemical Biomass Conversion Processes
  • Municipal Solid Waste Management
  • Advancements in Solid Oxide Fuel Cells
  • Second Language Learning and Teaching
  • Analytical chemistry methods development
  • Atmospheric chemistry and aerosols
  • Coal and Its By-products
  • Engineering and Materials Science Studies
  • Fuel Cells and Related Materials
  • Electrocatalysts for Energy Conversion
  • EFL/ESL Teaching and Learning
  • Recycling and utilization of industrial and municipal waste in materials production
  • Catalysts for Methane Reforming
  • Economic and Social Issues
  • Civil and Structural Engineering Research
  • Metal Extraction and Bioleaching
  • Coagulation and Flocculation Studies
  • Nanoparticles: synthesis and applications
  • Concrete and Cement Materials Research
  • Gas Sensing Nanomaterials and Sensors

École Polytechnique Fédérale de Lausanne
2016-2025

Paul Scherrer Institute
2016-2025

École Nationale de l’Aviation Civile
2014-2025

TU Dresden
2025

University of Birmingham
2024

Freie Universität Berlin
2020-2023

Swiss Federal Laboratories for Materials Science and Technology
2022

Hyundai Motors (Germany)
2017-2022

University of Wuppertal
2022

University of Hagen
2014-2019

Molecularly engineered novel dopant-free hole-transporting materials for perovskite solar cells (PSCs) combined with mixed-perovskite (FAPbI3 )0.85 (MAPbBr3 )0.15 (MA: CH3 NH3+ , FA: NH=CHNH3+ ) that exhibit an excellent power conversion efficiency of 18.9% under AM 1.5 conditions are investigated. The mobilities FA-CN, and TPA-CN determined to be 1.2 × 10-4 cm2 V-1 s-1 1.1 respectively. Exceptional stability up 500 h is measured the PSC based on FA-CN. Additionally, it found maximum output...

10.1002/adma.201606555 article EN Advanced Materials 2017-07-17

The development of new biodegradable plastic materials from renewable sources is a major challenge for industries to provide sustainable alternatives petroleum plastic. Bio-based plastics are generally obtained photosynthetic biomass such as higher plants, crops and more recently algae. This review aims summarise the current state bioplastic production in general with particular emphasis on algal cellulose its derivatives (nanocellulose) applications. Despite potential algae feedstock...

10.1016/j.algal.2021.102288 article EN cc-by Algal Research 2021-04-22

There has been growing concern about the way cultivating biomass for production of agro-biofuels competes with food production. To avoid this competition biofuels will, in long term, have to be completely decoupled from This is where microalgae enormous potential. Here we propose a novel process based on cultivation using dilute fossil CO2 emissions and conversion algal through catalytic hydrothermal process. The resulting products are methane as clean fuel concentrated sequestration....

10.1039/b819874h article EN Energy & Environmental Science 2009-01-01

Due to the already prevalent and increasing use of silver-nanoparticle (Ag-NP) products raised concerns in particular for aquatic environment, analytical techniques characterization such are need. However, because Ag-NP different compositions polydispersities, analysis especially size distribution is challenging. In this work, an asymmetric flow field fractionation (A4F) multidetector system (UV/vis, light scattering, inductively coupled plasma mass spectrometry - ICPMS), combination with a...

10.1021/ac202641d article EN Analytical Chemistry 2012-02-02

Abstract Supercritical water is a green solvent used in many technological applications including materials synthesis, nuclear engineering, bioenergy, or waste treatment and it occurs nature. Despite its relevance natural systems technical applications, the supercritical state of still not well understood. Recent theories predict that liquid-like (LL) gas-like (GL) are metastable phases, so-called Widom line zone marking crossover between LL GL behavior water. With neutron imaging...

10.1038/s41467-019-12117-5 article EN cc-by Nature Communications 2019-09-17

This review explores the potential of separating and recycling rare earth elements (REEs) from different energy conversion systems, such as wind turbines, electric vehicles batteries, or lighting devices. The REEs include 17 (with global production 242 kilometric tons in 2020) that can be found abundantly nature. However, they are expensive complicated to extract separate with many environmental challenges. overall demand for is continuously growing a 10% yearly increase) it quite clear has...

10.3390/separations9030056 article EN cc-by Separations 2022-02-24

10.1016/0021-9797(92)90391-x article EN Journal of Colloid and Interface Science 1992-03-01

Phytoextraction is an environmentally sound method for cleaning up sites that are contaminated with toxic heavy metals. However, the has been questioned because it produces a biomass-rich secondary waste containing extracted Therefore, further treatment of this biomass necessary. In study, we investigated whether thermal could be feasible option evaporatively separating metals from plant residues. We used laboratory scale reactor designed to simulate volatilization behavior in grate furnace....

10.1021/es0484101 article EN Environmental Science & Technology 2005-03-19
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