Search results for: Albert D. Venosa

Items from 1 to 20 out of 49 results

article

Anaerobic biodegradation of soybean biodiesel and diesel blends under sulfate-reducing conditions

Shuyun Wu, Mohamad H. Yassine, Makram T. Suidan, Albert D. Venosa

Chemosphere > 2016 > 161 > C > 382-389

Biotransformation of soybean biodiesel and its biodiesel/petrodiesel blends were investigated under sulfate-reducing conditions. Three blends of biodiesel, B100, B50, and B0, were treated using microbial cultures pre-acclimated to B100 (biodiesel only) and B80 (80% biodiesel and 20% petrodiesel). Results indicate that the biodiesel could be effectively biodegraded in the presence or absence of petrodiesel,...

chapter

Evaluation of Mixing Energy in Laboratory Flasks

Vikram J. Kaku, Michel C. Boufadel, Albert D. Venosa

Fluid Mechanics and Its Applications > IUTAM Symposium on Reynolds Number Scaling in Turbulent Flow > 311-314

Turbulence generated in the Swirling flask (SF) and the Baffled flask (BF) by an orbital shaker (at 150 RPM) were examined using hot-wire anemometer (HWA) data. Two-dimensional (i.e. radial and azimuthal) velocity measurements were used to determine dissipation rates, and Kolmogorov microscales within the flasks. The energy dissipation rate in the BF was about one order of magnitude larger than that...

article

Biodegradation and toxicity of vegetable oils in contaminated aquatic environments: Effect of antioxidants and oil composition

Darine A. Salam, Makram T. Suidan, Albert D. Venosa

Science of The Total Environment > 2016 > 547 > C > 95-103

Antioxidants may affect the oxidative rate of vegetable oils determining their fate and impact in contaminated aquatic media. In previous studies, we demonstrated the effectiveness of butylated hydroxytoluene (BHT), one of the most used antioxidants in edible oils, in enhancing the biodegradation of glyceryl trilinoleate, a pure triacylglycerol of cis,cis-9,12-octadecadienoic acid (C18:2 delta), through...

article

Effect of dispersants on the biodegradation of South Louisiana crude oil at 5 and 25 °C

Mobing Zhuang, Gulizhaer Abulikemu, Pablo Campo, William E. Platten, more

Chemosphere > 2016 > 144 > C > 767-774

This article reports biodegradation rates for a commercial dispersant, JD-2000, South Louisiana crude oil (SLC) alone, and SLC dispersed with JD-2000 at 5 and 25 °C. Results from the biodegradation experiments revealed that Component X, a chemical marker for JD-2000, rapidly degraded at both temperatures. The application of JD-2000 decreased by half the overall biodegradation rate of aliphatic compounds...

article

Characterization of solidifiers used for oil spill remediation

Devi Sundaravadivelu, Makram T. Suidan, Albert D. Venosa, Pablo I. Rosales

Chemosphere > 2016 > 144 > C > 1490-1497

The physical characteristics and chemical composition of oil spill solidifiers were studied, and correlation of these properties with product effectiveness enabled determination of characteristics that are desirable in a good solidifier. The analyses revealed that the commercial products were primarily comprised of organic polymers and a few trace elements. A natural sorbent, which was composed entirely...

article

Development of a testing protocol for oil solidifier effectiveness evaluation

Devi Sundaravadivelu, Makram T. Suidan, Albert D. Venosa, Pablo I. Rosales, more

Clean Technologies and Environmental Policy > 2016 > 18 > 4 > 1141-1150

Chemical countermeasures for oil spill remediation have to be evaluated and approved by the U.S. Environmental Protection Agency before they may be used to remove or control oil discharges. Solidifiers are chemical agents that change oil from a liquid to a solid by immobilizing the oil and bonding the liquid into a solid carpet-like mass with minimal volume increase. Currently, they are listed as...

article

Anaerobic biodegradation of soybean biodiesel and diesel blends under methanogenic conditions

Shuyun Wu, Mohamad H. Yassine, Makram T. Suidan, Albert D. Venosa

Water Research > 2015 > 87 > C > 395-402

Biotransformation of soybean biodiesel and the inhibitory effect of petrodiesel were studied under methanogenic conditions. Biodiesel removal efficiency of more than 95% was achieved in a chemostat with influent biodiesel concentrations up to 2.45 g/L. The kinetics of anaerobic biodegradation of soybean biodiesel B100 (biodiesel only) with different petrodiesel loads was studied using biomass pre-acclimated...

article

Parametric study to determine the effect of temperature on oil solidifier performance and the development of a new empirical correlation for predicting effectiveness

Devi Sundaravadivelu, Makram T. Suidan, Albert D. Venosa

Marine Pollution Bulletin > 2015 > 95 > 1 > 297-304

Temperature can play a significant role in the efficacy of solidifiers in removing oil slicks on water. We studied and quantified the effect of temperature on the performance of several solidifiers using 5 different types of oils under a newly developed testing protocol by conducting experiments in constant temperature rooms set at 22°C and 5°C. The results indicated that solidifier efficiency decreased...

article

Biodegradation of alkylates under less agitated aquifer conditions

Jay J. Cho, Makram T. Suidan, Albert D. Venosa

Journal of Environmental Sciences > 2013 > 25 > 8 > 1529-1538

The biodegradability of three alkylates (2,3-dimethylpentane, 2,4-dimethylpentane and 2,2,4-trimethylpentane) under less agitated aquifer conditions was investigated in this study. All three alkylates biodegraded completely under these conditions regardless of the presence or absence of ethanol or benzene, toluene, ethylbenzene, and xylenes (BTEX) in the feed. In the presence of ethanol, alkylates...

article

Microbial kinetic model for the degradation of poorly soluble organic materials

Mohamad H. Yassine, Makram T. Suidan, Albert D. Venosa

Water Research > 2013 > 47 > 4 > 1585-1595

A novel mechanistic model is presented that describes the aerobic biodegradation kinetics of soybean biodiesel and petroleum diesel in batch experiments. The model was built on the assumptions that biodegradation takes place in the aqueous phase according to Monod kinetics, and that the substrate dissolution kinetics at the oil/water interface is intrinsically fast compared to biodegradation kinetics...

article

Determining the dispersibility of South Louisiana crude oil by eight oil dispersant products listed on the NCP Product Schedule

Albert D. Venosa, Edith L. Holder

Marine Pollution Bulletin > 2013 > 66 > 1-2 > 73-77

We recently conducted a laboratory study to measure the dispersion effectiveness of eight dispersants currently listed on the National Contingency Plan Product Schedule. Results are useful in determining how many commercial dispersant products would have been effective for use on South Louisiana crude oil in the Deepwater Horizon oil spill. The test used was a modification of the Baffled Flask Test...

article

Biological nitrogen and carbon removal in a gravity flow biomass concentrator reactor for municipal sewage treatment

Daniel Scott, Taira Hidaka, Pablo Campo, Eric Kleiner, more

Chemosphere > 2013 > 90 > 4 > 1412-1418

A novel membrane system, the Biomass Concentrator Reactor (BCR), was evaluated as an alternative technology for the treatment of municipal wastewater. Because the BCR is equipped with a membrane whose average poresize is 20μm (18–28μm), the reactor requires low-pressure differential to operate (gravity). The effectiveness of this system was evaluated for the removal of carbon and nitrogen using two...

article

Microtox aquatic toxicity of petrodiesel and biodiesel blends: The role of biodiesel's autoxidation products

Mohamad H. Yassine, Shuyun Wu, Makram T. Suidan, Albert D. Venosa

Environmental Toxicology and Chemistry > 31 > 12 > 2757 - 2762

The acute Microtox toxicity of the water accommodated fraction (WAF) of six commercial soybean biodiesel/petrodiesel blends was investigated at different oil loads. We analyzed five fatty acid methyl esters (FAMEs), C10–C24 n‐alkanes, four aromatics, methanol, and total organic carbon (TOC) content. At high oil loads, the WAFs' toxicity was significantly higher for blends containing biodiesel. At...

article

Effect of environmental factors on the effectiveness of ammoniated bagasse in wicking oil from contaminated wetlands

Seungjoon Chung, Makram T. Suidan, Albert D. Venosa

Journal of Environmental Sciences > 2012 > 24 > 8 > 1371-1377

Ammoniated bagasse is a plant-derived organic sorbent that can be used for capturing oil and for supplying slow-release nutrients to oil-degrading microorganisms. We investigated the oil-wicking behavior of this sorbent under various conditions for its effectiveness in remediating oil-contaminated wetlands. Abiotic microcosms simulating a wetland environment were used to assess the influence of sand...

article

Aerobic fate and impact of canola oil in aquatic media

Pablo Campo, Yuechen Zhao, Makram T. Suidan, Albert D. Venosa

Clean Technologies and Environmental Policy > 2012 > 14 > 1 > 125-132

The fate of canola oil in water under aerobic conditions was studied in respirometry tests. First-order biodegradation rates were estimated for a refined oil (commercial canola oil, CCO), 0.0037 h⁻¹, and for two synthetic oils, one prepared with mono-acid triacylglycerols (TAO) 0.0048 h⁻¹, and the other with free fatty acids and glycerol (FAO) 0.0038 h⁻¹. Two abiotic factors limited substrate bioavailability:...

article

Effectiveness of Plant-Derived Sorbents for the Remediation of Low-Energy Intertidal Wetlands Contaminated by Oil Spills

Seungjoon Chung, Makram T. Suidan, Albert D. Venosa

Water, Air, & Soil Pollution > 2012 > 223 > 6 > 3137-3144

The use of plant-derived sorbent was investigated as a remediation strategy for low-energy intertidal wetlands contaminated by crude oil spills. Effectiveness of plant-derived sorbent as a wicking agent was evaluated in microcosms simulating intertidal wetlands. Microcosms were designed to impose three different oil penetration depths (0.25, 0.5, and 1.0 cm), two different tidal amplitudes (±5 and...

article

Application of entropy analysis of in situ droplet-size spectra in evaluation of oil chemical dispersion efficacy

Zhengkai Li, Kenneth Lee, Thomas King, Haibo Niu, more

Marine Pollution Bulletin > 2011 > 62 > 10 > 2129-2136

In situ droplet-size distributions were measured using a laser in situ scattering and transmissiometry (LISST-100X) particle size analyzer during the evaluation of natural and chemical dispersion efficiency of crude oils under different wave and current conditions. An entropy grouping of the in situ dispersed oil droplet-size spectra has classified the multi-modal droplet-size distributions into different...

article

Biodegradability of Lingering Crude Oil 19 Years after the Exxon Valdez Oil Spill

Albert D. Venosa, Pablo Campo, Makram T. Suidan

Environmental Science & Technology > 2010 > 44 > 19 > 7613 - 7621

article

Effects of temperature and wave conditions on chemical dispersion efficacy of heavy fuel oil in an experimental flow-through wave tank

Zhengkai Li, Kenneth Lee, Thomas King, Michel C. Boufadel, more

Marine Pollution Bulletin > 2010 > 60 > 9 > 1550-1559

The effectiveness of chemical dispersants (Corexit 9500 and SPC 1000) on heavy fuel oil (IFO180 as test oil) has been evaluated under different wave conditions in a flow-through wave tank. The dispersant effectiveness was determined by measuring oil concentrations and droplet size distributions. An analysis of covariance (ANCOVA) model indicated that wave type and temperature significantly (p<0...

article

A laboratory screening study on the use of solidifiers as a response tool to remove crude oil slicks on seawater

Pablo I. Rosales, Makram T. Suidan, Albert D. Venosa

Chemosphere > 2010 > 80 > 4 > 389-395

The effectiveness of five solidifiers to remove Prudhoe Bay crude oil from artificial seawater in the laboratory was determined by UV–Vis and GC/MS. The performance of the solidifiers was determined by UV–Vis as a function of solidifier-to-oil mass ratios (SOR), water volume and surface area, and contact time. An SOR of 1:4 solidified crude oil from 58% to 84%. Under more severe test conditions (SOR...

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Search results for: Albert D. Venosa

Anaerobic biodegradation of soybean biodiesel and diesel blends under sulfate-reducing conditions

Evaluation of Mixing Energy in Laboratory Flasks

Biodegradation and toxicity of vegetable oils in contaminated aquatic environments: Effect of antioxidants and oil composition

Effect of dispersants on the biodegradation of South Louisiana crude oil at 5 and 25 °C

Characterization of solidifiers used for oil spill remediation

Development of a testing protocol for oil solidifier effectiveness evaluation

Anaerobic biodegradation of soybean biodiesel and diesel blends under methanogenic conditions

Parametric study to determine the effect of temperature on oil solidifier performance and the development of a new empirical correlation for predicting effectiveness

Biodegradation of alkylates under less agitated aquifer conditions

Microbial kinetic model for the degradation of poorly soluble organic materials

Determining the dispersibility of South Louisiana crude oil by eight oil dispersant products listed on the NCP Product Schedule

Biological nitrogen and carbon removal in a gravity flow biomass concentrator reactor for municipal sewage treatment

Microtox aquatic toxicity of petrodiesel and biodiesel blends: The role of biodiesel's autoxidation products

Effect of environmental factors on the effectiveness of ammoniated bagasse in wicking oil from contaminated wetlands

Aerobic fate and impact of canola oil in aquatic media

Effectiveness of Plant-Derived Sorbents for the Remediation of Low-Energy Intertidal Wetlands Contaminated by Oil Spills

Application of entropy analysis of in situ droplet-size spectra in evaluation of oil chemical dispersion efficacy

Biodegradability of Lingering Crude Oil 19 Years after the Exxon Valdez Oil Spill

Effects of temperature and wave conditions on chemical dispersion efficacy of heavy fuel oil in an experimental flow-through wave tank

A laboratory screening study on the use of solidifiers as a response tool to remove crude oil slicks on seawater

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