A5018809523- Spectroscopy and Chemometric Analyses
- Water Quality Monitoring and Analysis
- Metal Extraction and Bioleaching
- Mine drainage and remediation techniques
- Fault Detection and Control Systems
- Industrial Vision Systems and Defect Detection
- CO2 Sequestration and Geologic Interactions
- Mineral Processing and Grinding
- Groundwater flow and contamination studies
- Water Quality Monitoring Technologies
- Coal and Its By-products
- Geological Studies and Exploration
- Geochemistry and Geologic Mapping
- Radioactive element chemistry and processing
- Tensor decomposition and applications
- Sustainable Industrial Ecology
- Wastewater Treatment and Nitrogen Removal
- Engineering and Environmental Studies
- Cultural Heritage Materials Analysis
- Hydraulic Fracturing and Reservoir Analysis
- Wood Treatment and Properties
- Composting and Vermicomposting Techniques
- Spectroscopy Techniques in Biomedical and Chemical Research
- Catalysts for Methane Reforming
- Chemical Thermodynamics and Molecular Structure
Novia University of Applied Sciences
2010-2023
Svenskt Stål (Finland)
2008
Abstract Acid sulfate soils release metal laden, acidic waters that affect the environment, buildings, and human health. In this study, 16S rRNA gene amplicons, metagenomes, metatranscriptomes all demonstrated distinct microbial communities activities in unoxidized potential acid soil, overlying transition zone, uppermost oxidized actual soil. Assembled genomes mRNA transcripts also suggested abundant soil populations aligned within Gammaproteobacteria Terracidiphilus . contrast, potentially...
When reduced sulfidic parent sediments are oxidized, they become acid sulfate soils and discharge metal laden acidic solutions that can damage the environment, infrastructure, human health. Consequently, methods to mitigate effect of a priority in affected areas. In this study, sulfuric soil core samples, consisting natural network preferential-flow macropores with defined macropore surfaces inner cores denser clay, were characterized subjected treatments calcium carbonate peat suspensions,...
In the production of sandpaper, a phenol formaldehyde polymer bonds abrasive material to backing made paper or textile. The reaction takes place at elevated temperatures (90–120°C) for long time (at least eight hours) and is thereby very energy-demanding process step. A possible future application would be use near infrared (NIR) hyperspectral imaging (1000–2498 nm) (1) monitoring curing determining an end point it (2) identifying in homogeneous regions with low adhesion final product....
Abstract Composts are complex organic systems that undergo batch fermentation processes. Traditional monitoring of such processes is usually based on measuring important chemical (physical) laboratory parameters but the common trend includes using more rapid and non‐destructive methods like near‐infrared (NIR) spectroscopy. A lab‐scale designed (simplex mixture) experiment with nine compost batches, including three repeated centre point was monitored over 5 weeks by NIR spectroscopy...
Although near infrared (NIR) spectroscopy has been evaluated for numerous applications, the number of actual on-line or even on-site industrial applications seems to be very limited. In present paper, attempts produce online predictions chemical oxygen demand (COD) in wastewater from a pulp and paper mill using NIR are described. The task was perceived as challenging, but with root mean square error prediction 149 mg/l, roughly corresponding 1/10 studied concentration interval, this attempt...
This paper describes the evaluation process of a calibration method, which utilises structure multiple layers partial least squares (PLS) models to obtain accurate constituent data. method is hereafter referred as multi-layer (ML-PLS). In ML-PLS, fundamental idea that PLS model prediction on one layer selects use next in structure. The general rule for should become more and “local” from layer. Thus, can be seen stepwise procedure local measurement. ML-PLS was applied measurement moisture...
Fox manure, food waste and yard were used as pure composts to construct a laboratory-scale designed (simplex mixture) experiment with repeated centre points that was monitored over 31 calendar days by near infrared (NIR) spectroscopy (900–1700 nm) additionally sampling for wet chemical physical laboratory measurements: pH, energy, moisture content, NH 3 /NH 4 + (simply called ammonium) concentration, temperature. Three methods of data analysis tested on the resulting matrices: (1) modelling...
The performance of local calibration models for quantitative measurements ammonium and acetate on samples from an anaerobic digestion process was examined. methods used were locally weighted regression (LWR) multi-layer partial least squares (ML-PLS) regression. results these two compared to each other the global (PLS) model as well. For ammonium, both performed excellently in comparison with PLS models. However, 150 LWR regressed also showed that accuracy can be highly dependent different...
Biogas production through anaerobic digestion (AD) plays an important role in the effort to reduce amount of greenhouse gas emissions from energy production. At same time commercial processes are commonly operated well below their maximal capacity. One reason for this is lack suitable sensors monitoring key parameters process. Near infrared (NIR) spectroscopy seen as a potentially interesting technique liquid phase measurements AD processes. In work, concentrations constituents, ammonium,...
The performance of an iterative algorithm for finding the most suitable regression data to be used local quantitative partial least-squares (PLS) models was investigated. This represented a further development method called multilayer PLS (ML-PLS) in previous publications, including automated distance measure selection and evaluation how many iterations are used. investigation carried out by creating ML-PLS based on previously published made available different ways. applications near...
The performance of a laboratory-scale activated sludge plant (capacity approx. 1 dm3 h–1) during various conditions was studied and modeled. apparatus consists primary clarifier, an anoxic selector, aeration basin secondary clarifier. fully automatized utilizes the preanoxic configuration, in which nitrate produced aerobic zone is recycled back to selector situated between clarifier basin. Under steady-state conditions, using synthetic waste water as influent, COD reduction over 95%,...