A5055593500- Wastewater Treatment and Nitrogen Removal
- Water Treatment and Disinfection
- Water Systems and Optimization
- Microbial Community Ecology and Physiology
- Fault Detection and Control Systems
- Phosphorus and nutrient management
- Membrane Separation Technologies
- Water Quality Monitoring and Analysis
- Urban Stormwater Management Solutions
- Wastewater Treatment and Reuse
- Pharmaceutical and Antibiotic Environmental Impacts
- Water Quality Monitoring Technologies
- Microbial Fuel Cells and Bioremediation
- Adsorption and biosorption for pollutant removal
- Constructed Wetlands for Wastewater Treatment
- Arsenic contamination and mitigation
- Advanced Control Systems Optimization
- Child Nutrition and Water Access
- Forest Ecology and Biodiversity Studies
- Industrial Gas Emission Control
- Crystallization and Solubility Studies
- Anaerobic Digestion and Biogas Production
- X-ray Diffraction in Crystallography
- Soil and Water Nutrient Dynamics
- Advanced Photocatalysis Techniques
Aalto University
2015-2024
Environmental and Water Resources Engineering
2018-2019
University of Helsinki
1998-2009
This study on the removal of microplastics during different wastewater treatment unit processes was carried out at Viikinmäki plant (WWTP). The amount in influent high, but it decreased significantly process. major part fibres were removed already primary sedimentation whereas synthetic particles settled mostly secondary sedimentation. Biological filtration further improved removal. A proportion microplastic load also passed and found effluent, entering receiving water body. After process,...
The reed straw is assessed as a potential source of widely available renewable biomass for biochar production and compared with two other waste-based biomasses, namely fruit stones blend, brewery spent grains. biochars were activated via steam CO2. While activation yielded 12 % carbon from biomass, CO2 resulted in degradation. characterization showed mesoporous structure high surface area 514 m2/g. adsorption tests displayed decent capacity biochar, values 92.6 mg/g methylene violet dye 35.7...
The nitrous oxide emissions of the Viikinmäki wastewater treatment plant were measured in a 12 month online monitoring campaign. measurements, which conducted with continuous gas analyzer, covered all unit operations advanced wastewater-treatment process. relation between and certain process parameters, such as temperature, influent biological oxygen demand, ammonium nitrogen load, was investigated by applying data obtained from process-control system at 1 min intervals. Although seasonal...
Ladderane lipids produced by anammox bacteria constitute some of the most structurally fascinating yet poorly studied molecules among biological membrane lipids. Slow growth producing organism and inherent difficulty purifying complex lipid mixtures have prohibited isolation useful amounts natural ladderane We devised a highly selective total synthesis tails full phosphatidylcholine to enable biophysical studies on chemically homogeneous samples these molecules. Additionally, we report first...
Activated carbon (AC) is an effective adsorbent in water treatment but its production method has significant emissions to the environment. This study aims quantify environmental impacts of various AC types and determine whether raw material selection could reduce footprint AC. A cradle-to-gate life cycle assessment (LCA) was conducted on coal, coconut shell, wood, peat, reactivated coal ACs. The different materials were selected reflect typical global local availability location. Life data...
Human urine contains significant amounts of N (nitrogen) and P (phosphorus); therefore it has been successfully used as fertilizer in different crops. But the use several constraints, such as, high cost transportation, an unpleasant smell, risk pathogens, pharmaceutical residue. A combined improved stripping precipitation technique is this study. In technique, Ca(OH)2 to increase pH which converts ammonium into ammonia gas precipitate Ca-P compound. The stripped passed sulfuric acid where...
Seven full-scale biological wastewater treatment systems located in the Polar Arctic Circle region Finland were investigated to determine their Archaea, Bacteria and Fungi community structure, relationship with operational conditions of bioreactors by means quantitative PCR, massive parallel sequencing multivariate redundancy analysis. The results showed dominance Archaea members bioreactors. activated sludge strong selection but not for Fungi, as suggested diversity analyses. Core OTUs...
Sewer condition is commonly assessed using closed-circuit television (CCTV) inspections. In this paper, we combine inspection results, pipe attributes, network data, and data on environment to predict discover which factors affect it. We apply the random forest algorithm model assess variable importance Boruta algorithm. analyse impact of predictor variables poor partial dependence plots, are a valuable technique for purpose. The results can be used in screening pipes future inspections...
This study examines zinc(II)–chitosan complexes as a bio-sorbent for phosphate removal from aqueous solutions. The is prepared and characterized via Fourier Transform Infrared Spectroscopy (FT-IR), Scanning Electron Microscopy (SEM), Point of Zero Charge (pHPZC)–drift method. adsorption capacity compared with those chitosan ZnO–chitosan nano-ZnO–chitosan composites. effect operational parameters including pH, temperature, competing ions are explored batch mode. A rapid uptake observed within...
Microplastics (MPs) provide a stable and protective habitat for diverse wastewater bacteria, including pathogenic antibiotic-resistant species. Therefore, MPs may potentially transport these bacteria through treatment steps to the environment far distances. This study investigated bacterial communities of MP-associated from different stages municipal processes evaluate potential negative effect biofilms on environment. The results showed high diversity that were strongly attached MPs. After...
One great challenge for waterworks is effective leakage detection. This paper presents a method based on the self-organising map detection in water distribution network. The data used training and validating test results consist of vectors flow meter readings knowledge reported leak locations. most important factor facilitating self-organising-map-based modelling leaks developed function. experiments presented show that model trained can detect defined network area.