A5070778629- Algal biology and biofuel production
- Wastewater Treatment and Nitrogen Removal
- Constructed Wetlands for Wastewater Treatment
- Biodiesel Production and Applications
- Membrane Separation Technologies
- Wastewater Treatment and Reuse
- Water Quality Monitoring Technologies
- Anaerobic Digestion and Biogas Production
- Air Quality Monitoring and Forecasting
- Selenium in Biological Systems
- Aquaculture Nutrition and Growth
- Air Quality and Health Impacts
- Odor and Emission Control Technologies
- Catalytic Processes in Materials Science
- Phosphorus and nutrient management
- Water Quality Monitoring and Analysis
- Coal Combustion and Slurry Processing
- Marine and coastal ecosystems
- Minerals Flotation and Separation Techniques
- Rabbits: Nutrition, Reproduction, Health
- Lignin and Wood Chemistry
- Water-Energy-Food Nexus Studies
- Urban Stormwater Management Solutions
- Marine Bivalve and Aquaculture Studies
- Water Treatment and Disinfection
California Polytechnic State University
2009-2024
MicroBio Engineering (United States)
2012-2024
Cal Poly Corporation
2023
California State Polytechnic University
2011
Clemson University
2009
Institute for Environmental Management
2009
Lawrence Berkeley National Laboratory
2003-2005
University of California, Berkeley
1995-2002
Global Algae Innovations (United States)
2000
Algae grown on wastewater media are a potential source of low-cost lipids for production liquid biofuels. This study investigated lipid productivity and nutrient removal by green algae during treatment dairy farm municipal wastewaters supplemented with CO2. Dairy was treated outdoors in bench-scale batch cultures. The content the volatile solids peaked at Day 6, exponential growth, declined thereafter. Peak ranged from 14–29%, depending concentration. Maximum also 6 volumetric 17 mg/day/L...
This paper examines the potential of algae biofuel production in conjunction with wastewater treatment. Current technology for algal treatment uses facultative ponds, however, these ponds have low productivity (∼10 tonnes/ha.y), are not amenable to cultivating single species, require chemical flocculation or other expensive processes harvest, and do provide consistent nutrient removal. Shallow, paddlewheel-mixed high rate (HRAPs) much higher productivities (∼30 tonnes/ha.y) promote...
Microalgal biomass production offers a number of advantages over conventional production, including higher productivities, use otherwise nonproductive land, reuse and recovery waste nutrients, saline or brackish waters, CO2 from power-plant flue gas similar sources. utilization potential for greenhouse (GHG) avoidance by providing biofuel replacement fossil fuels carbon-neutral animal feeds. This paper presents an initial analysis the GHG using proposed algal system coupled to flue-gas...
A life cycle assessment (LCA) focused on greenhouse gas (GHG) emissions from the production of microalgal biodiesel was carried out based a detailed engineering and economic analysis. This LCA applies methodology California Low Carbon Fuel Standard (CA LCFS) uses inventory (LCI) data for process inputs, California-Modified Greenhouse Gases, Regulated Emissions, Energy use in Transportation GREET) model. Based mass energy balances, calculated GHG this algal system are 70% lower than those...
An energy balance is presented for a second generation Advanced Integrated Wastewater Pond System (AIWPS) prototype at the University of California, Berkeley, Environmental Engineering and Health Sciences Laboratory in Richmond, California. Modifications were made to existing 1.8 ML facultative pond order further optimize methane fermentation demonstrate recovery using submerged gas collector. Methane production rates determined over range in-pond digester loadings temperatures. The...
Wastewater treatment lagoons are well known for their effectiveness in removing biochemical oxygen demand, suspended solids, and pathogens of sewage origin. Their performance fixed nitrogen is somewhat less recognized documented. Advanced Integrated Pond Systems (AIWPSs), developed at the University California, Berkeley's Engineering Field Station constructed several locations California elsewhere, do permanently remove significant amounts from wastewater streams. A major part this removal...
Microalgae oil production is the subject of intensive worldwide research and development, with several billion dollars invested in past few years. Many different approaches technologies are being investigated: (1) growing microalgae on sunlight CO2 enclosed photobioreactors (tubes, bags, panels, etc.) or open ponds; (2) algae heterotrophically dark sugar starches; (3) hybrid systems using both starches, even (4) processes artificial lights. Generally, strains used above isolated from nature,...
Waste-grown microalgae are a potentially important biomass for biofuel production. However, most of the 7,000 wastewater treatment ponds systems in US do not use algae harvesting. Those that do, typically return to ponds, where it decomposes on pond floor, releasing methane atmosphere and degrading water quality. Instead, could be processed anaerobic digesters. Algae yield less than sludge (~0.3 vs. 0.40 L CH4/g volatile solids introduced). Ammonia toxicity recalcitrant cell walls commonly...
An energy balance is presented for a second generation Advanced Integrated Wastewater Pond System (AIWPS) prototype at the University of California, Berkeley, Environmental Engineering and Health Sciences Laboratory in Richmond, California. Modifications were made to existing 1.8 ML facultative pond order further optimize methane fermentation demonstrate recovery using submerged gas collector. Methane production rates determined over range in-pond digester loadings temperatures. The...
Wastewater treatment lagoons are well known for their effectiveness in removing biochemical oxygen demand, suspended solids, and pathogens of sewage origin. Their performance fixed nitrogen is somewhat less recognized documented. Advanced Integrated Pond Systems (AIWPSs), developed at the University California, Berkeley's Engineering Field Station constructed several locations California elsewhere, do permanently remove significant amounts from wastewater streams. A major part this removal...
The sustainability of wastewater reclamation and reuse schemes is often limited by the increase in salt concentration that occurs with each water use. In this pilot study, we show cost reclaiming removing can be dramatically decreased integrating recent advances pond design, solids separation equipment, membrane technology. Effluent from an AIWPS Facility was clarified a Krofta Supracell Dissolved Air Flotation (DAF) unit Slow Sand Filter (SSF) prior to final treatment Expertise S.r.l....
Abstract There are several basic reasons for concern regarding the fate of carbonaceous material in waste stabilization ponds: accumulation solids; performance and useful life pond system; and, control methane emissions. In conventional ponds fermentation is minimal, carbon-rich organic matter integrated by bacteria microalgae which grow settle. The integration carbon decreases volume treatment capacity causes to age prematurely, produce odor, require frequent sludge removal; any produced...
High rate algae ponds fed clarified domestic wastewater and CO2-rich flue gas are expected to remove nutrients concentrations similar those achieved in mechanical treatment technologies, such as activated sludge. However, the energy intensity of with CO2-supplemented high (HRPs) would be less than that treatments. In conjunction anaerobic digestion algal biomass co-substrates, algae-based system produce a substantial excess electricity. Greenhouse abatement from CO2-HRP/digestion systems...
Photosynthetic algae represent a large, diverse bioresource potential. Yellow-green of the genus Tribonema are candidates for production biofuels and other bioproducts. We report on filamentous isolate from an outdoor raceway polyculture growing municipal reclaimed wastewater which we classified as T. minus. Over one year cultivation in 3.5 m2 ponds fed by wastewater, minus cultures were more productive than native algal polycultures, with annual average productivities 15.9 ± 0.3 13.4 0.4...
Advanced Integrated Wastewater Pond Systems (AIWPSs) involve a series consisting of Facultative Ponds with internally located fermentation pits; secondary ponds either photosynthetic oxygenation or mechanical aeration; tertiary for sedimentation algae aeration solids; and, quaternary controlled discharge, irrigation storage, aquaculture, other beneficial uses reclaimed wastewater. This paper deals mainly design and performance containing pits. Experiences 1,894 m3 day−1 (0.5 MGD) AIWPS 7,576...