A5074764686- Algal biology and biofuel production
- Aquatic Ecosystems and Phytoplankton Dynamics
- Marine and coastal ecosystems
- Wastewater Treatment and Nitrogen Removal
- Anaerobic Digestion and Biogas Production
- Microbial Community Ecology and Physiology
- Advanced oxidation water treatment
- Atmospheric and Environmental Gas Dynamics
- Pharmaceutical and Antibiotic Environmental Impacts
- Microbial Fuel Cells and Bioremediation
- Water Treatment and Disinfection
- Catalytic Processes in Materials Science
- Protist diversity and phylogeny
- Constructed Wetlands for Wastewater Treatment
- Methane Hydrates and Related Phenomena
- Food Industry and Aquatic Biology
University of Massachusetts Amherst
2013-2024
University of Minnesota
2023
Brown and Caldwell (United States)
2018-2019
University of Massachusetts System
2015-2017
This study presents the oxygenic photogranule (OPG) process, a light-driven process for wastewater treatment, developed based on photogranulation of filamentous cyanobacteria, nonphototrophic bacteria, and microalgae. Unlike other biogranular processes requiring airlift or upflow-based mixing, OPG was operated in stirred-tank reactors without aeration. Reactors were seeded with hydrostatically grown photogranules sequencing-batch mode five months to treat wastewater. The new reactor biomass...
Microorganisms often respond to their environment by growing as densely packed communities in biofilms, flocs or granules. One major advantage of life these aggregates is the retention its community an ecosystem despite flowing water. We describe here a novel type granule dominated filamentous and motile cyanobacteria order Oscillatoriales. These bacteria form mat-like photoactive outer layer around otherwise unconsolidated core. The spatial organization phototrophic resembles microbial mats...
Recently, the use of phototrophs for wastewater treatment has been revisited because new approaches to separate them from effluent streams. One manifestation uses oxygenic photogranules (OPGs) which are dense, easily-settleable granular biofilms cyanobacteria, surrounding populations heterotrophs, autotrophs, and microalgae. OPGs can remove COD nitrogenous compounds without external aeration. To better grow maintain biomass in proposed process, this study seeks understand factors that...
Oxygenic photogranules have received increasing interest due to their ability treat wastewater without aeration and recover wastewater's chemical energy solar energy. It has been reported that these can be produced under both hydrostatic hydrodynamic conditions, enrichment of filamentous cyanobacteria is required for this photogranulation occur. Despite the critical role extracellular polymeric substances (EPS) play in granulation, EPS yet virtually unknown. Here, we present fate dynamics...
Initial water quality parameters in hydrostatic photogranulation determine photogranule shape (spherical or disk-shaped), impacting their physical traits and wastewater treatment effectiveness.
Advanced drinking water treatment including biological activated carbon (BAC) filtration, ozonation, and advanced oxidation processes (AOPs) can improve trace organic contaminant removal compared to conventional processes. Contaminant removals through a pilot-scale lime-softening plant (pH > 8.5 after recarbonation) using BAC alone parallel ozone ozone/hydrogen peroxide (AOP) units followed by were compared. The filters contained aged media (∼14 years) harvested from the full-scale facility....
Investigation of Characteristics Microalgae Grown in Different Wastewater and Their Enhancing Anaerobic Digestibility Waste Activated SludgeTwo species green algae, Micractinium nov. Chlorella sp., were cultivated primary effluent the mixture sludge centrate (SC1) to evaluate nutrient removal their anaerobic digestibility under mesophilic condition. Results showed that cultivation both algae reduced 95 % phosphorous...Author(s)Meng WangW. Camilla Kuo-DahabChul ParkSourceProceedings Water...