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Techno-Economic Optimization Of Food Waste Diversion To Treatment Facilities To Determine Cost Effectiveness Of Policy Incentives, Kanwal Shahid Nov 2020

Techno-Economic Optimization Of Food Waste Diversion To Treatment Facilities To Determine Cost Effectiveness Of Policy Incentives, Kanwal Shahid

Theses

New York state recently passed a food waste (FW) disposal ban, which will prohibit land-filling of FW produced by commercial entities generating more than 2 tons/week by the year 2022. This will redirect 370,000 tons/year of FW from landfills. In this work, we investigate three questions about the landfill ban: 1) How can this waste be diverted to treatment facilities at lowest system cost? 2) To what degree can an expanded anaerobic digestion portfolio help with the state’s Renewable Portfolio Standards? 3) What policies can help with the transition of waste-to-energy technologies? We develop a mixed-integer linear programming model that …

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Evaluation Of Anti-Aging Performance Of Biochar Modified Asphalt Binder, Wenhao Dong, Feng Ma, Chen Li, Zhen Fu, Yue Huang, Jenny Liu Nov 2020

Evaluation Of Anti-Aging Performance Of Biochar Modified Asphalt Binder, Wenhao Dong, Feng Ma, Chen Li, Zhen Fu, Yue Huang, Jenny Liu

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

As a renewable biomass resource, biochar is new to modify or replace asphalt binder in pavement engineering. This paper focuses on the effect of biochar on the anti-aging performance of asphalt binder. The short-and long-term aging properties of biochar modified asphalt binder were investigated using dynamic shear rheometer (DSR) and bending beam rheometer (BBR) tests. The modification mechanism was investigated through the Fourier-transform infrared spectroscopy (FTIR) test. The aging tests and viscosity analysis showed that the softening point of biochar modified asphalt binder was higher than base asphalt binder, while the aging index and aging viscosity ratio were lower than …

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Recent Advances In Graphene-Based Materials For Fuel Cell Applications, Hanrui Su, Yun Hang Hu Oct 2020

Recent Advances In Graphene-Based Materials For Fuel Cell Applications, Hanrui Su, Yun Hang Hu

Michigan Tech Publications

The unique chemical and physical properties of graphene and its derivatives (graphene oxide, heteroatom-doped graphene, and functionalized graphene) have stimulated tremendous efforts and made significant progress in fuel cell applications. This review focuses on the latest advances in the use of graphene-based materials in electrodes, electrolytes, and bipolar plates for fuel cells. The understanding of structure-activity relationships of metal-free heteroatom-doped graphene and graphene-supported catalysts was highlighted. The performances and advantages of graphene-based materials in membranes and bipolar plates were summarized. We also outlined the challenges and perspectives in using graphene-based materials for fuel cell applications.

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Pyrolysis Characteristics And Pyrolysis Product Composition Of Bituminous Coal Under Weak Oxidizing Atmosphere, Zang Libin, Cui Hufeng, Li Qingchun Oct 2020

Pyrolysis Characteristics And Pyrolysis Product Composition Of Bituminous Coal Under Weak Oxidizing Atmosphere, Zang Libin, Cui Hufeng, Li Qingchun

Coal Geology & Exploration

In order to improve the light tar and gas yield, the yield distribution and composition characteristics of pyrolysis products of bituminous coal from Shaanxi Hongliulin in the nitrogen atmosphere and weak oxygen atmosphere were studied in a fixed bed reactor. The results showed that the yield of char and tar were reduced under the weak oxygen atmosphere, and the yield of CO and CO2 increased significantly, leading to the increase of total gas yield. Due to the oxidation combustion reaction, the yield of H2, CH4 and C2-C3 gradually decreased with the increase of …

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Spartan Daily, October 8, 2020, San Jose State University, School Of Journalism And Mass Communications Oct 2020

Spartan Daily, October 8, 2020, San Jose State University, School Of Journalism And Mass Communications

Spartan Daily, 2020

Volume 155, Issue 21

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Bibliometric Analysis Of Wastewater Literature Published In Web Of Science 2019 To 2020, Elham Mounir Bador, Isam Mohammad Abdel-Magid, Shakil Ahmad, Mohd Akhter Oct 2020

Bibliometric Analysis Of Wastewater Literature Published In Web Of Science 2019 To 2020, Elham Mounir Bador, Isam Mohammad Abdel-Magid, Shakil Ahmad, Mohd Akhter

Library Philosophy and Practice (e-journal)

The present study used bibliometric and visualization techniques for the analysis of wastewater literature published in the Web of Science 2019-2020. The bibliometrix tool based on R package, Excel, MS-Access, ScientoPy and VOS-viewer software packages were used for data analysis and bibliometric indicators extraction. This is for evaluating the research productivity of wastewater based on the data collected from documents that covered two recent years. The work ventured to examine the overall performance of wastewater researchers in their research quest, productivity achievements, and publications accomplishments. The study answered questions related to most productive countries, organizations, and authors; preferred types of …

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Recent Advancements In The Removal Of Cyanotoxins From Water Using Conventional And Modified Adsorbents—A Contemporary Review, Tauqeer Abbas, George William Kajjumba, Meena Ejjada, Sayeda Ummeh Masrura, Erica J. Marti, Eakalak Khan, Tammy L. Jones-Lepp Oct 2020

Recent Advancements In The Removal Of Cyanotoxins From Water Using Conventional And Modified Adsorbents—A Contemporary Review, Tauqeer Abbas, George William Kajjumba, Meena Ejjada, Sayeda Ummeh Masrura, Erica J. Marti, Eakalak Khan, Tammy L. Jones-Lepp

Civil and Environmental Engineering and Construction Faculty Research

The prevalence of cyanobacteria is increasing in freshwaters due to climate change, eutrophication, and their ability to adapt and thrive in changing environmental conditions. In response to various environmental pressures, they produce toxins known as cyanotoxins, which impair water quality significantly. Prolonged human exposure to cyanotoxins, such as microcystins, cylindrospermopsin, saxitoxins, and anatoxin through drinking water can cause severe health effects. Conventional water treatment processes are not effective in removing these cyanotoxins in water and advanced water treatment processes are often used instead. Among the advanced water treatment methods, adsorption is advantageous compared to other methods because of its affordability …

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Coal Char Affects Soil Ph To Reduce Ammonia Volatilization From Sandy Loam Soil, Dinesh Panday, Maysoon M. Mikha, Bijesh Maharjan Oct 2020

Coal Char Affects Soil Ph To Reduce Ammonia Volatilization From Sandy Loam Soil, Dinesh Panday, Maysoon M. Mikha, Bijesh Maharjan

Department of Agronomy and Horticulture: Faculty Publications

Ammonia (NH3) volatilization loss adversely affects N availability in soil-plant systems, reduces crop yield, and negatively impacts environment. Char (coal combustion residue), which contains up to 293 g kg−1 total C by weight, has been shown to reduce NH3 volatilization due to its considerably high surface area and cation exchange capacity. The NH3 loss can be greatly affected by a shift in soil pH or urea hydrolysis. A 21-d laboratory study was conducted to evaluate the effects of char on soil pH, N transformations, and subsequent NH3 volatilization in sandy loam soil. Two …

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Overcoming Anaerobic Digestion Toxicity Of Aqueous Liquid From Wastewater ‎Solids Pyrolysis, Seyedehfatemeh Seyedi Oct 2020

Overcoming Anaerobic Digestion Toxicity Of Aqueous Liquid From Wastewater ‎Solids Pyrolysis, Seyedehfatemeh Seyedi

Dissertations (1934 -)

Pyrolysis treats and potentially recovers energy from wastewater solids (WWS). ‎Aqueous pyrolysis liquid (APL), however, is produced and its management is a ‎bottleneck to pyrolysis full-scale application. To overcome this bottleneck, ‎anaerobic digestion (AD) may be a possible method to manage APL, but APL ‎digestion has not been conclusively demonstrated. In AD, a select group of ‎microorganisms convert organic chemicals to biogas containing methane that ‎can be used as a fuel. In this dissertation work, APL derived from WWS pyrolysis ‎was successfully converted into methane as the sole substrate and as a co-‎digestate with synthetic primary sludge in long-term, continuous …

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Isotherm And Kinetics Study For The Adsorption Of Nitrate From An Aqueous Solution Using A Modified Rice Straw, Dalia A. Ali Eng, Mohamed A. Sadek Prof., Nagwa Mahmoud Al-Mansi Prof, Ahmad Wafiq Aboelnasr Dr. Sep 2020

Isotherm And Kinetics Study For The Adsorption Of Nitrate From An Aqueous Solution Using A Modified Rice Straw, Dalia A. Ali Eng, Mohamed A. Sadek Prof., Nagwa Mahmoud Al-Mansi Prof, Ahmad Wafiq Aboelnasr Dr.

Chemical Engineering

In this research, modified rice straw (MRS) is proposed. The proposed production process of the modified rice straw (MRS) adsorbent is carried out by precipitation of iron nano particles on the surface of acid activated rice straw. The nitrate adsorption is carried out through batch experiments. The optimum nitrate removal 94.8 % was achieved at pH = 7, adsorbent dose 3 = g/L, 150 rpm, initial nitrate concentration = 23 mg/L and contact time 180 = min. The new adsorbent synthesis, kinetics and isotherm models were studied. The nitrate adsorption was well described by pseudo second order kinetic model (R2 …

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Solid Waste Co-Conversion By Hydrothermal Treatment Using Natural Zeolite, Lalak Tarbiyatun Nasyin Maleiva, Chandra Wahyu Purnomo Sep 2020

Solid Waste Co-Conversion By Hydrothermal Treatment Using Natural Zeolite, Lalak Tarbiyatun Nasyin Maleiva, Chandra Wahyu Purnomo

Makara Journal of Science

Hydrothermal treatment is a thermal conversion technology for processing high-moisture-content solid waste to coal-like materials. In this research, mixtures of sawdust and polyethylene terephthalate (PET) waste were treated in a 2000 mL hydrothermal reactor to produce hydrochar and a liquid product. The effects of zeolite addition and temperature variations during the treatment on the product characteristics were investigated. During the treatment, the utilized temperatures were 180, 200, and 220 °C, and the zeolite contents in the mixture were 10 and 20 wt%; the temperature and zeolite content were varied, while the other processing parameters were fixed, i.e., a biomass-to-PET ratio …

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A Seasonal Study Of Ecoroof Metal And Nutrient Dynamics And Associated Drivers In An Ecoroof On A Commercial Building In North Portland Oregon, Alex Vijay Bans Sep 2020

A Seasonal Study Of Ecoroof Metal And Nutrient Dynamics And Associated Drivers In An Ecoroof On A Commercial Building In North Portland Oregon, Alex Vijay Bans

Dissertations and Theses

Green stormwater infrastructure (GSI), specifically ecoroofs, is increasingly seen as an effective stormwater management tool in urban planning strategies. However, the literature suggests that ecoroofs can be sources of certain metals and nutrients. The goal of our study was to address two research questions: 1) How does ecoroof runoff compare to conventional roof runoff chemically: do ecoroofs retain certain chemicals and leach others? and 2) what are the roof characteristics and environmental variables that affect runoff quality? For 10 months, runoff events from an ecoroof were compared to those of a conventional roof; water samples were collected with autosamplers, and …

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Restoring Pre-Industrial Co2 Levels While Achieving Sustainable Development Goals, Mark E. Capron, Jim R. Stewart, Antoine De Ramon N’Yeurt, Michael D. Chambers, Jang K. Kim, Charles Yarish, Anthony T. Jones, Reginald B. Blaylock, Scott C. James, Rae Fuhrman, Martin T. Sherman, Don Piper, Graham Harris, Mohammed A. Hasan Sep 2020

Restoring Pre-Industrial Co2 Levels While Achieving Sustainable Development Goals, Mark E. Capron, Jim R. Stewart, Antoine De Ramon N’Yeurt, Michael D. Chambers, Jang K. Kim, Charles Yarish, Anthony T. Jones, Reginald B. Blaylock, Scott C. James, Rae Fuhrman, Martin T. Sherman, Don Piper, Graham Harris, Mohammed A. Hasan

Faculty Publications

© 2020 by the authors. Unless humanity achieves United Nations Sustainable Development Goals (SDGs) by 2030 and restores the relatively stable climate of pre-industrial CO2 levels (as early as 2140), species extinctions, starvation, drought/floods, and violence will exacerbate mass migrations. This paper presents conceptual designs and techno-economic analyses to calculate sustainable limits for growing high-protein seafood and macroalgae-for-biofuel. We review the availability of wet solid waste and outline the mass balance of carbon and plant nutrients passing through a hydrothermal liquefaction process. The paper reviews the availability of dry solid waste and dry biomass for bioenergy with CO2 …

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Waste Hemp Fibers (Hfs) Derived Porous Carbons: Preparation, Characterization, And Potential Applications, Manju Gurung Aug 2020

Waste Hemp Fibers (Hfs) Derived Porous Carbons: Preparation, Characterization, And Potential Applications, Manju Gurung

Electronic Thesis and Dissertation Repository

The main objective of the present research was to develop environmentally friendly and cost-effective porous carbon materials of improved properties from waste hemp fibers. Two different types/categories of porous carbons were prepared from hemp fibers. In one type, porous carbon materials were developed by a simple one-step method of carbonization and activation. The other type of carbon materials developed in this study were nitrogen-containing activated carbons, which were developed by introduction of nitrogen-containing functional groups on the surface of hemp fibers followed by activation and carbonization. The pore structure/distribution and surface chemistry of the prepared carbons were investigated through the …

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Spatial Distribution Of Soil Nutrients In Reclamation Dump Sites Based On Subdivision Idw, Zhao Yanling, Zhao Bincheng, Wang Xin, Xiao Wu, Liu Huifang Aug 2020

Spatial Distribution Of Soil Nutrients In Reclamation Dump Sites Based On Subdivision Idw, Zhao Yanling, Zhao Bincheng, Wang Xin, Xiao Wu, Liu Huifang

Coal Geology & Exploration

Accurately grasping the spatial distribution of soil nutrients is of great significance for evaluating the soil quality of reclamation dumps and formulating corresponding reclamation measures. The general interpolation method of the complex terrain of the dump site has a poor prediction effect. The northern dump of Shengli No.1 open-pit mine in Xilinhot, Inner Mongolia was selected as an example in the paper. The soil nutrients(available nitrogen, available potassium, available phosphorus and organic matter) were spatially interpolated using the inverse distance weighting method based on terrain partitioning, and compared with the conventional inverse distance weighting method and kriging interpolation method. The …

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Development Of Technologies For High Value Products From Biomass Pyrolysis, Chiara Barbiero Aug 2020

Development Of Technologies For High Value Products From Biomass Pyrolysis, Chiara Barbiero

Electronic Thesis and Dissertation Repository

Phragmites australis (Cav.) Trin. ex. Steud. is an invasive perennial grass found in North America, which is rapidly spreading throughout Ontario, damaging the native ecosystem and endangering the wildlife. This infestation has caused a decrease in biodiversity and nutrient availability to the agricultural crops through competition. One of the most effective management practices is spading them, leaving a huge number of dead stalks that need to be disposed of. Pyrolysis was selected as an alternative thermochemical method to convert this feedstock to value-added bioproducts, such as bio-oil and biochar, and to produce valuable renewable chemicals from the pyrolysis oil, such …

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A Review Of Coal Heating Value Correlations With Application To Coal Char, Tar, And Other Fuels, Andrew P. Richards, Denver Haycock, Jacob F. Frandsen, Thomas H. Fletcher Aug 2020

A Review Of Coal Heating Value Correlations With Application To Coal Char, Tar, And Other Fuels, Andrew P. Richards, Denver Haycock, Jacob F. Frandsen, Thomas H. Fletcher

Faculty Publications

Accurately measuring a fuel’s heating value is one of the first steps in the classification of a new fuel. Heating values are widely used in coal combustion research and are becoming more useful in other fuel types as well. Many different empirical correlations to predict heating values based on primary organic (CHONS) elemental composition are found in the literature, many of which were originally created to predict heating values of parent coal, and some of which have been extended for biomass. However, no correlations exist for heating values of coal chars and tars. Thirteen literature heating value correlations (10 model …

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Removal Of Molybdenum From Contaminated Water Using Douglas Fir Biochar/Iron Oxide Composites, Naba Krishna Das Aug 2020

Removal Of Molybdenum From Contaminated Water Using Douglas Fir Biochar/Iron Oxide Composites, Naba Krishna Das

Theses and Dissertations

Molybdenum (Mo) is a naturally occurring trace element that is present in drinking water mostly in the molybdate (MoO42-) form in well water. Recently, the EPA deemed Mo as a potential contaminant because exposure can lead to health effects such as gout, hyperuricemia, and lung cancer. In this work, we have assessed the sorptive removal of Mo using Douglas fir biochar (DFBC) and its chemically-coprecipitated iron oxide analogue (DFMBC). Adsorption was studied varying the batch sorption conditions; pH, equilibrium time (5 min-24 h), initial Mo concentrations (2.5-1000 mg/L), temperatures (5, 25, and 40 °C) and equilibrium method. Langmuir capacities for …

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Phosphate Reclamation From Water Using Douglas Fir Biochar Fe/Mg-Ldh Composites, Sharifur Rahman Aug 2020

Phosphate Reclamation From Water Using Douglas Fir Biochar Fe/Mg-Ldh Composites, Sharifur Rahman

Theses and Dissertations

Eutrophication, caused by phosphate, can be detrimental both for the aquatic environment and human health. This research aims to provide deep knowledge about the adsorption properties of low-cost Fe/Mg layered double hydroxide modified biochar (LDHBC) for removal of phosphate from aqueous solution. Firstly, Fe/Mg layered double hydroxide (LDH) was synthesized by mixing FeCl3 and MgCl2. 6H2O salts in water, followed by NaOH treatment (coprecipitation method). For LDHBC, FeCl3, and MgCl2. 6H2O salts were dissolved in water, and Douglas fir biochar was added to the salts mixture to make a slurry, followed by NaOH treatment. The surface chemistry and elemental composition …

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Investigation Of Co-Pyrolysis And Co-Gasification Of Chicken Manure And Rice Husk, Juan Camilo Espindola Canon Aug 2020

Investigation Of Co-Pyrolysis And Co-Gasification Of Chicken Manure And Rice Husk, Juan Camilo Espindola Canon

Theses and Dissertations

Renewable energy is gaining more attention to supply the increasing energy demand worldwide. Currently, biomass is gaining popularity because this energy source offers several flexibilities in terms of the products that can be obtained out of the biomass (such as petroleum-like fuels, hydrogen, fertilizer, and solid fuels). There are different technologies to obtain the desired products out of the biomass (such as biological, physical, and thermochemical conversions). Among the thermochemical technologies, pyrolysis and gasification have the advantages of being faster, cleaner and produce more valuable fuels than the other technologies. However, gasification and pyrolysis technologies are expensive and very sensitive …

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Speciation, Transport, And Fate Of Heavy Metals In Soils From A Civil War Battlefield: Development Of A Novel Mae-Gf-Aas Method, Shawn Christopher Salske Aug 2020

Speciation, Transport, And Fate Of Heavy Metals In Soils From A Civil War Battlefield: Development Of A Novel Mae-Gf-Aas Method, Shawn Christopher Salske

Theses and Dissertations

The research herein will describe a novel method to better understand heavy metal contamination over long periods of time by studying soils for which the spatial and temporal dimensions are relatively well-defined. This work is based on the ability to pin-point the initial time and place of contamination on an American Civil War battlefield, where the firearms left distinctive chemical signatures (e.g., dropped and impacted bullets and percussion caps). The abundance and distribution of Copper and Mercury was measured in soil core samples collected at Manassas National Battlefield (Manassas, VA, USA) transecting the line occupied by an infantry regiment, a …

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Lignin Ethanolysis Depolymerization And Product Upgrading With Mesoporous And Palladium Supported Zeolite Catalysts, Nathan Cody Baxter Aug 2020

Lignin Ethanolysis Depolymerization And Product Upgrading With Mesoporous And Palladium Supported Zeolite Catalysts, Nathan Cody Baxter

Doctoral Dissertations

Lignin is a high-volume farm waste and environmental hazard of paper and pulp industries. To promote the utilization of its rich aromatic units into important chemicals and fuels, efforts were intensively made to breakdown lignin structure with a variety of depolymerization processes involving heating, solvent, and catalysts or their combination. Among those processes, ethanolysis in supercritical conditions shows promising performance for its high lignin conversion and little char formation. To improve the yield and selectivity of aromatics, particularly phenols, we examined the important roles of acidity and pore structure of different zeolite catalyst play in this process. Zeolites with close …

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Monarch Science Observer, Volume 5, College Of Sciences, Old Dominion University Aug 2020

Monarch Science Observer, Volume 5, College Of Sciences, Old Dominion University

College of Sciences Newsletter

August-Summer 2020 issue of Monarch Science Observer, ODU College of Sciences Newsletter.

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Performance Testing Of Hot Mix Asphalt Containing Biochar, Shadi Saadeh, Yazan Al-Zubi, Basel Zaatarah Aug 2020

Performance Testing Of Hot Mix Asphalt Containing Biochar, Shadi Saadeh, Yazan Al-Zubi, Basel Zaatarah

Mineta Transportation Institute Publications

In recent years, researchers have been able to identify asphalt binder additives, such as polymers and bio-binder, that can enhance the rheological and mechanical properties of asphalt binders. Earlier studies show that utilizing bio-binder as a partial replacement for asphalt binder has shown promising results in both mechanical and sustainability aspects. Biochar additions improved binder viscosity and low-temperature characteristics. Biochar, which is a byproduct of producing bio-binder, has shown enhanced rheological and mechanical properties when used as an additive to the asphalt binder. In this study, the mechanical properties of asphalt mixtures containing Biochar were investigated. In addition, its color …

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Kinetics, Affinity, Thermodynamics, And Selectivity Of Phosphate Removal Using Immobilized Phosphate-Binding Proteins, Kaushik Venkiteshwaran, Erin Wells, Brooke Mayer Aug 2020

Kinetics, Affinity, Thermodynamics, And Selectivity Of Phosphate Removal Using Immobilized Phosphate-Binding Proteins, Kaushik Venkiteshwaran, Erin Wells, Brooke Mayer

Civil and Environmental Engineering Faculty Research and Publications

A phosphate (Pi)-selective adsorption system featuring immobilized Pi-binding proteins (PBP) has recently attracted attention for ultralow Pi removal followed by recovery. This study investigated the adsorption kinetics, affinity, thermodynamics, and selectivity, as well as the effect of pH and temperature on Pi adsorption using immobilized PBP (PBP resin). Immobilizing PBP did not affect its Pi affinity. Kinetic studies at 22 °C and pH 7.1 showed that the PBP resin achieved 95% of its equilibrium capacity within 0.64 ± 0.2 min. The estimated Langmuir affinity constant (KL) was 21 ± 5 …

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Soil Health Assessment On Arid Rangeland Soils Impacted By Oil And Gas Exploration, Development, And Extraction, Justin Allred Aug 2020

Soil Health Assessment On Arid Rangeland Soils Impacted By Oil And Gas Exploration, Development, And Extraction, Justin Allred

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Oil and gas well pad reclamation in arid environments such as in the Uinta Basin of Utah, presents unique challenges, including remote locations, limited water, and elevated soil salinity and sodicity. Successfully reclaimed Plugged and Abandoned (P&A) well pads should resemble the surrounding rangeland once fully reclaimed. Revegetation of native species is the primary indicator of successful reclamation, but the lack of water makes it challenging to re-seed native plants, while trying to prevent the encroachment of invasive plant species such as Bromus tectorum (cheatgrass), Salsola tragus (Russian thistle), and Halogeton glomeratus (halogeton). Could successful reclamation be reflective of good …

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Effects Of Char On Nitrogen Management In Agricultural Soils Of Semi-Arid Western Nebraska, Dinesh Panday Jul 2020

Effects Of Char On Nitrogen Management In Agricultural Soils Of Semi-Arid Western Nebraska, Dinesh Panday

Department of Agronomy and Horticulture: Dissertations, Theses, and Student Research

Soils in western Nebraska are characterized by low soil organic C due to semi-arid environment in the region and further aggravated by disruption of soil aggregates and rapid C decomposition from intensive tillage, erosion, and frequent droughts. Proper management of soil C may improve soil properties, reduce N losses, and subsequently improve crop yields in this low C soil and low moisture condition. This dissertation focuses on C-rich coal char (henceforth “char”) as a potential strategy to overcome the existing problem of low C in semi-arid region. Char is an industrial by-product, resulting from inefficient coal burning during sugar beet …

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Assessment Of Dehydration As A Commercial-Scale Food Waste Valorization Strategy, Jon T. Schroeder, Ava L. Labuzetta, Thomas A. Trabold Jul 2020

Assessment Of Dehydration As A Commercial-Scale Food Waste Valorization Strategy, Jon T. Schroeder, Ava L. Labuzetta, Thomas A. Trabold

Articles

Using a commercially available dehydration unit, this study aimed to valorize various food waste streams from different sources in the Rochester, New York area. Dehydration of the food waste collected for the study helped reduce the weight of the feedstock by 70–90%, as the incoming waste streams were relatively wet. The output was materially characterized against end uses such as cattle feed, fish feed, and compost. The results demonstrated that, other than fertilizer, the remaining five end uses (compost, fish feed, cattle feed, pyrolysis, and pelletized fuel) were potentially compatible with varying waste feedstocks based on the parameters analyzed. Fish …

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Spatiotemporal Mapping And Monitoring Of Mangrove Forests Changes From 1990 To 2019 In The Northern Emirates, Uae Using Random Forest, Kernel Logistic Regression And Naive Bayes Tree Models, Samy I. Elmahdy, Tarig A. Ali, Mohamed M. Mohamed, Fares M. Howari, Mohamed Abouleish, Daniel Simonet Jul 2020

Spatiotemporal Mapping And Monitoring Of Mangrove Forests Changes From 1990 To 2019 In The Northern Emirates, Uae Using Random Forest, Kernel Logistic Regression And Naive Bayes Tree Models, Samy I. Elmahdy, Tarig A. Ali, Mohamed M. Mohamed, Fares M. Howari, Mohamed Abouleish, Daniel Simonet

All Works

© Copyright © 2020 Elmahdy, Ali, Mohamed, Howari, Abouleish and Simonet. Mangrove forests are acting as a green lung for the coastal cities of the United Arab Emirates, providing a habitat for wildlife, storing blue carbon in sediment and protecting shoreline. Thus, the first step toward conservation and a better understanding of the ecological setting of mangroves is mapping and monitoring mangrove extent over multiple spatial scales. This study aims to develop a novel low-cost remote sensing approach for spatiotemporal mapping and monitoring mangrove forest extent in the northern part of the United Arab Emirates. The approach was developed based …

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Soil-Test Biological Activity With The Flush Of Co2: Viii. Soil Type And Management Diversity, Alan J. Franzluebbers, Mary R. Pershing Jul 2020

Soil-Test Biological Activity With The Flush Of Co2: Viii. Soil Type And Management Diversity, Alan J. Franzluebbers, Mary R. Pershing

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

Soil-test biological activity (STBA) is a key indicator describing the functions of soil to catabolize organic amendments, promote soil organic C sequestration, and cycle nutrients. We explored how climatic zone, land use, and physiographic region affected the relationship of STBA with several soil fertility properties and processes. Soils from Georgia, North Carolina, Pennsylvania, and Virginia (wet climate) were Aquults, Fluvents, Udalfs, Udepts, and Udults and soils from Nebraska and Oklahoma (dry climate) were Udolls and Ustolls. Annual cropland and perennial pasture were the land uses. The Prairie region had silt loam and silty clay loams, the Ridge–Valley region had silt …

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