TY  - JOUR
A1  - Richter, L.
A1  - Wichern, M.
A1  - Grömping, Markus
A1  - Robecke, U.
A1  - Haberkamp, J.
T1  - Ammonium recovery from process water of digested sludge dewatering by membrane contactors
JF  - Water Practice and Technology
N2  - Membrane contactors are a promising alternative for nitrogen removal and recovery from process water compared to other physicochemical and biological sidestream treatment processes. Münster wastewater treatment plant (WWTP) is the first municipal WWTP in Germany operating a full-scale membrane contactor system to improve the nitrogen elimination and recovery efficiency. Factors influencing the operation and membrane performance are investigated in an accompanying research project. Additional operational aspects of the applied membrane modules are investigated in detail using a bench-scale membrane contactor. First results of the full-scale application demonstrate a high nitrogen removal efficiency of >95%.
Y1  - 2020
U6  - http://dx.doi.org/10.2166/wpt.2020.002
SN  - 1751-231X
VL  - 15
IS  - 1
SP  - 84
EP  - 91
PB  - IWA Publishing
CY  - London
ER  - 
TY  - JOUR
A1  - Janus, Kevin Alexander
A1  - Achtsnicht, Stefan
A1  - Tempel, Laura
A1  - Drinic, Aleksaner
A1  - Kopp, Alexander
A1  - Keusgen, Michael
A1  - Schöning, Michael Josef
T1  - Influence of fibroin membrane composition and curing parameters on the performance of a biodegradable enzymatic biosensor manufactured from Silicon-Free Carbon
JF  - Physica status solidi : pss. A, Applications and materials science
N2  - Herein, fibroin, polylactide (PLA), and carbon are investigated for their suitability as biocompatible and biodegradable materials for amperometric biosensors. For this purpose, screen-printed carbon electrodes on the biodegradable substrates fibroin and PLA are modified with a glucose oxidase membrane and then encapsulated with the biocompatible material Ecoflex. The influence of different curing parameters of the carbon electrodes on the resulting biosensor characteristics is studied. The morphology of the electrodes is investigated by scanning electron microscopy, and the biosensor performance is examined by amperometric measurements of glucose (0.5–10 mM) in phosphate buffer solution, pH 7.4, at an applied potential of 1.2 V versus a Ag/AgCl reference electrode. Instead of Ecoflex, fibroin, PLA, and wound adhesive are tested as alternative encapsulation compounds: a series of swelling tests with different fibroin compositions, PLA, and Ecoflex has been performed before characterizing the most promising candidates by chronoamperometry. Therefore, the carbon electrodes are completely covered with the particular encapsulation material. Chronoamperometric measurements with H2O2 concentrations between 0.5 and 10 mM enable studying the leakage current behavior.
KW  - amperometric biosensors
KW  - biocompatible
KW  - biodegradabl
KW  - encapsulation materials
KW  - fibroin
Y1  - 2023
U6  - http://dx.doi.org/10.1002/pssa.202300081
SN  - 1862-6300 (Print)
SN  - 1862-6319 (Online)
N1  - Corresponding author: Michael J. Schöning
VL  - 220
IS  - 22
PB  - Wiley-VCH
CY  - Weinheim
ER  -