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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

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 ...


Low-Temperature Pyrolysis Of Municipal Solid Waste Components And Refuse-Derived Fuel—Process Efficiency And Fuel Properties Of Carbonized Solid Fuel, Kacper Swiechowski, Ewa Syguła, Jacek A. Koziel, Paweł Stepien, Szymon Kugler, Piotr Manczarski, Andrzej Białowiec Jun 2020

Low-Temperature Pyrolysis Of Municipal Solid Waste Components And Refuse-Derived Fuel—Process Efficiency And Fuel Properties Of Carbonized Solid Fuel, Kacper Swiechowski, Ewa Syguła, Jacek A. Koziel, Paweł Stepien, Szymon Kugler, Piotr Manczarski, Andrzej Białowiec

Agricultural and Biosystems Engineering Publications

New technologies to valorize refuse-derived fuels (RDFs) will be required in the near future due to emerging trends of (1) the cement industry’s demands for high-quality alternative fuels and (2) the decreasing calorific value of the fuels derived from municipal solid waste (MSW) and currently used in cement/incineration plants. Low-temperature pyrolysis can increase the calorific value of processed material, leading to the production of value-added carbonized solid fuel (CSF). This dataset summarizes the key properties of MSW-derived CSF. Pyrolysis experiments were completed using eight types of organic waste and their two RDF mixtures. Organic waste represented common morphological ...


Investigation Of Azo-Bond Cleavage In Methyl Orange And Direct Yellow 12 Using Soybean Peroxidase, Amanpreet Kaur May 2020

Investigation Of Azo-Bond Cleavage In Methyl Orange And Direct Yellow 12 Using Soybean Peroxidase, Amanpreet Kaur

Electronic Theses and Dissertations

Removal of dyes released in water by textile industries presents a major challenge for the researchers. Soybean peroxidase (SBP) has been widely explored for removal of a variety of toxic aromatics consisting of phenolic or anilino functional groups. Also, it has been known to possess the ability of azo-bond cleavage. This thesis was aimed to investigate azo-bond cleavage by SBP in the presence of hydrogen peroxide, if possible, in the absence of these functional groups. Direct Yellow 12 and azobenzene were chosen as a model compounds for this study. Experiments were conducted at a range of pHs, SBP and hydrogen ...


Ultrasound-Assisted Post-Pyrolysis Magnetization Of Microporous Biochar For Effective Removal Of Heavy Metals, Ronish Shrestha May 2020

Ultrasound-Assisted Post-Pyrolysis Magnetization Of Microporous Biochar For Effective Removal Of Heavy Metals, Ronish Shrestha

Honors Theses

Low cost and efficient adsorption of heavy metals from wastewater and thorough removal of adsorbent after water treatment have become the two essential needs for the commercial use of any adsorbent. Biochar (BC), the solid byproduct of pyrolysis with microporous carbonaceous structure, has been increasingly recognized as an efficient adsorbent for a vast number of pollutants. Magnetization, though eases the separation and reuse of BC, significantly reduces its adsorption capacity to a comparatively much higher extent. In this study, a hybrid post-pyrolysis magnetization was developed which sustained and even significantly increased the adsorption capacity of biochar. The process included i ...


Removal Of Fluoride From Mine Water Via Adsorption For Land-Applied Soil Amendment, Courtney Golman, Kevin Le, Michelle Dopp, Adrian Damian, Mary Johnson, Jacqueline Payne, Ethan Phan May 2020

Removal Of Fluoride From Mine Water Via Adsorption For Land-Applied Soil Amendment, Courtney Golman, Kevin Le, Michelle Dopp, Adrian Damian, Mary Johnson, Jacqueline Payne, Ethan Phan

Chemical Engineering Undergraduate Honors Theses

The process of mining minerals and elements from ores and rocks creates acid rock drainage (ARD). This drainage is water that contains heavy metals and minerals that can be dangerous for human consumption or damaging to the environment. The mining industry has employed various water treatment methods to prevent these metals and minerals from being discharged into water sources such as ponds, lakes, and streams. Currently, the most used treatment process in the mining industry is a cost-effective highdensity sludge (HDS) process. This method reduces the concentration of metals and elements with the use of lime/limestone. However, the concentration ...


Removal Of Fluoride From Mine Water Via Adsorption For Land-Applied Soil Amendment, Ethan Phan, Adrian Damian, Kevin Le, Mary Johnson, Courtney Golman, Michelle Dopp, Jacqueline Payne May 2020

Removal Of Fluoride From Mine Water Via Adsorption For Land-Applied Soil Amendment, Ethan Phan, Adrian Damian, Kevin Le, Mary Johnson, Courtney Golman, Michelle Dopp, Jacqueline Payne

Chemical Engineering Undergraduate Honors Theses

The process of mining minerals and elements from ores and rocks creates acid rock drainage (ARD). This drainage is water that contains heavy metals and minerals that can be dangerous for human consumption or damaging to the environment. The mining industry has employed various water treatment methods to prevent these metals and minerals from being discharged into water sources such as ponds, lakes, and streams. Currently, the most used treatment process in the mining industry is a cost-effective high-density sludge (HDS) process. This method reduces the concentration of metals and elements with the use of lime/limestone. However, the concentration ...


Removal Of Fluoride From Mine Water Via Adsorption For Land-Applied Soil Amendment, Kevin Le, Adrian Damian, Mary Johnson, Ethan Phan, Courtney Golman, Michelle Dopp, Jacqueline Payne May 2020

Removal Of Fluoride From Mine Water Via Adsorption For Land-Applied Soil Amendment, Kevin Le, Adrian Damian, Mary Johnson, Ethan Phan, Courtney Golman, Michelle Dopp, Jacqueline Payne

Chemical Engineering Undergraduate Honors Theses

The team researched, designed, and economically analyzed a full-scale adsorption column system to be applied in mining processes that leave high amounts of fluoride in their effluent. This system was designed to remove fluoride from water saturated with calcium sulfate, as calcium sulfate is present in high amounts in certain mining processes. Currently, high density sludge (HDS) is commonly employed to reduce fluoride concentrations, but due to solubility limits the sludge treatment cannot lower fluoride below 10 mg/L (ppm). The current enforceable EPA standard for discharged water is at 4 mg/L (ppm), although mining companies anticipate that this ...


Removal Of Fluoride From Mine Water Via Adsorption For Land-Applied Soil Amendment, Jacqueline Payne, Mary Johnson, Kevin Le, Michelle Dopp, Courtney Golman, Adrian Damian, Ethan Phan May 2020

Removal Of Fluoride From Mine Water Via Adsorption For Land-Applied Soil Amendment, Jacqueline Payne, Mary Johnson, Kevin Le, Michelle Dopp, Courtney Golman, Adrian Damian, Ethan Phan

Chemical Engineering Undergraduate Honors Theses

The process of mining minerals and elements from ores and rocks creates acid rock drainage (ARD). This drainage is water that contains heavy metals and minerals that can be dangerous for human consumption or damaging to the environment. The mining industry has employed various water treatment methods to prevent these metals and minerals from being discharged into water sources such as ponds, lakes, and streams. Currently, the most used treatment process in the mining industry is a cost-effective highdensity sludge (HDS) process. This method reduces the concentration of metals and elements with the use of lime/limestone. However, the concentration ...


Removal Of Fluoride From Mine Water Via Adsorption For Land-Applied Soil Amendment, Adrian Damian, Kevin Le, Mary Johnson, Ethan Phan, Courtney Golman, Michelle Dopp, Jacqueline Payne May 2020

Removal Of Fluoride From Mine Water Via Adsorption For Land-Applied Soil Amendment, Adrian Damian, Kevin Le, Mary Johnson, Ethan Phan, Courtney Golman, Michelle Dopp, Jacqueline Payne

Chemical Engineering Undergraduate Honors Theses

The process of mining minerals and elements from ores and rocks creates acid rock drainage (ARD). This drainage is water that contains heavy metals and minerals that can be dangerous for human consumption or damaging to the environment. The mining industry has employed various water treatment methods to prevent these metals and minerals from being discharged into water sources such as ponds, lakes, and streams. Currently, the most used treatment process in the mining industry is a cost-effective highdensity sludge (HDS) process. This method reduces the concentration of metals and elements with the use of lime/limestone. However, the concentration ...


Removal Of Fluoride From Mine Water Via Adsorption For Land-Applied Soil Amendment, Michelle Dopp, Kevin Le, Ethan Phan, Mary Johnson, Jacqueline Payne, Adrian Damian, Courtney Golman May 2020

Removal Of Fluoride From Mine Water Via Adsorption For Land-Applied Soil Amendment, Michelle Dopp, Kevin Le, Ethan Phan, Mary Johnson, Jacqueline Payne, Adrian Damian, Courtney Golman

Chemical Engineering Undergraduate Honors Theses

The Moo Pig Sooie’s researched, designed, and economically analyzed a full-scale adsorption column system to be applied in mining processes that leave high amounts of fluoride in their effluent. This system was designed to remove fluoride from water saturated with calcium sulfate, as calcium sulfate is present in high amounts in certain mining processes. Currently, high density sludge (HDS) is commonly employed to reduce fluoride concentrations, but due to solubility limits the sludge treatment cannot lower fluoride below 10 mg/L (ppm). The current enforceable EPA standard for discharged water is at 4 mg/L (ppm), although mining companies ...


Application Of Biochar As An Additive To Enhance Biomethane Potential In Anaerobic Digestion, Cecilia B. Frias Flores May 2020

Application Of Biochar As An Additive To Enhance Biomethane Potential In Anaerobic Digestion, Cecilia B. Frias Flores

Theses

Energy and useful materials can be produced by applying biological and thermal conversion processes such as anaerobic digestion and pyrolysis. Agricultural and industrial wastes seem to be the most attractive substrates since they are essentially unlimited resources. Pyrolysis has been used mostly for the conversion of biomass to bio-crude and biochar, a stable form of nearly pure carbon that has application in many agricultural and environmental applications. There is a widespread literature describing use of biochar as an additive to stabilize the anaerobic digestion process. We studied the effects that biochar has on the biomethane potential (BMP) during anaerobic digestion ...


Remediation Strategies To Reduce Heavy Metal Uptake In Lettuce Grown In Contaminated Urban Soil, Ryley Thomas Apr 2020

Remediation Strategies To Reduce Heavy Metal Uptake In Lettuce Grown In Contaminated Urban Soil, Ryley Thomas

UCARE Research Products

Urban soils are increasingly used to produce food for local consumption, which requires at the same time management strategies that prevent the plant uptake of potentially present contaminants. This study was conducted to test different soil amendments for their ability to retain lead (Pb) and arsenic (As) within the soil matrix. The analyzed soil was taken from a potential community garden lot near a railroad in Lincoln, NE where elevated concentrations in Pb and As had been detected. Ponderosa pine biochar and spent coffee grounds were used as soil additives because of their documented chemical reactivity towards soil cations or ...


Effects Of Chronic Exposure To The Herbicide, Mesotrione, On Spiders, Maya Khanna, Joseph Evans, Matthew Persons Apr 2020

Effects Of Chronic Exposure To The Herbicide, Mesotrione, On Spiders, Maya Khanna, Joseph Evans, Matthew Persons

Senior Scholars Day

Mesotrione is a widely used agricultural herbicide and is frequently used alone or as an adjuvant for the herbicides glyphosate and atrazine. The effects of mesotrione are largely untested on beneficial non-target species such as spiders. Different spider species may be differentially susceptible due to size differences, microhabitat, and levels of exposure to this herbicide via soil contact. We tested mortality differences of seven species of spider when exposed to field-relevant concentrations of mesotrione-treated soil over a 55-day period. We tested the web-building spiders Frontinella pyramitela and Tetragnatha laboriosa. We also tested the stem and leaf-dwelling ambush spiders Mecaphesa asperata ...


Biol 488: The Effects Of Chemical Fertilizer Vs. Biofertilizer On The Environment, Earl Long Apr 2020

Biol 488: The Effects Of Chemical Fertilizer Vs. Biofertilizer On The Environment, Earl Long

Student Showcase for Research and Creative Inquiry

Agriculture accounts for the majority of environmental pollution. 16% of that is from chemical fertilizer and 18% comes from burning biomass. Chemical fertilizers primarily use nitrogen and phosphorus synthetic fertilizer in a mineral form. This has caused many environmental problems from poor nutrient levels because the fertilizer kills microorganisms in the soil while lowering the PH. This fertilizer is harsh on the plants if it is over-applied leading to “burnt” plants and loss of yield. Much of this fertilizer ends up in watersheds before it can dissolve, leading to nutrient loading in the water system leading from uncontrollable algal growth ...


Methods Of Removal Of Low Concentration Water Contaminants With Biochar, Alyssa Cook, Kristopher Bosch, Dario Prieto, David Hutchins, Richard Ladouceur Apr 2020

Methods Of Removal Of Low Concentration Water Contaminants With Biochar, Alyssa Cook, Kristopher Bosch, Dario Prieto, David Hutchins, Richard Ladouceur

TECHxpo

Critical Need: To understand the adsorptive properties of biochar through distinct testing methods.


Effective Dispersion Of Mgo Nanostructure On Biochar Support As A Basic Catalyst For Glucose Isomerization, Season S. Chen, Yang Cao, Daniel C.W. Tsang, Jean-Philippe Tessonnier, Jin Shang, Deyi Hou, Zhengtao Shen, Shicheng Zhang, Yong Sik Ok, Kevin C.-W. Wu Apr 2020

Effective Dispersion Of Mgo Nanostructure On Biochar Support As A Basic Catalyst For Glucose Isomerization, Season S. Chen, Yang Cao, Daniel C.W. Tsang, Jean-Philippe Tessonnier, Jin Shang, Deyi Hou, Zhengtao Shen, Shicheng Zhang, Yong Sik Ok, Kevin C.-W. Wu

Chemical and Biological Engineering Publications

Glucose isomerization to fructose is one of the most important reactions in the field of biomass valorization. We demonstrate wood waste valorization with MgCl2 salt to synthesize an environment-friendly catalyst (i.e., MgO-biochar), which exhibits effective glucose-to-fructose isomerization with over 30% fructose yield and 80% selectivity at only 100 °C for 30 min in water as a green medium. This study highlights that one-step synthesis can effectively disperse and tether MgO nanostructures to the biochar matrix, which displays a significant reduction of Mg leaching compared to MgO-biochars produced by two-step synthesis and pure MgO. The MgCl2 acts as a porogen ...


2020 Imsaloquium, Illinois Mathematics And Science Academy Apr 2020

2020 Imsaloquium, Illinois Mathematics And Science Academy

IMSAloquium Abstract Booklets

Welcome to IMSAloquium 2020. This is IMSA’s 33rd year of leading in educational innovation, and the 32nd year of the IMSA Student Inquiry and Research (SIR) Program.


Growing Biofuel Feedstocks In Copper-Contaminated Soils Of A Former Superfund Site, Virinder Sidhu, Dibyendu Sarkar, Rupali Datta Feb 2020

Growing Biofuel Feedstocks In Copper-Contaminated Soils Of A Former Superfund Site, Virinder Sidhu, Dibyendu Sarkar, Rupali Datta

Michigan Tech Publications

Copper mining in the Upper Peninsula of Michigan in the mid-19th century generated millions of tons of mining waste, called stamp sand, which was deposited into various offshoots of Lake Superior. The toxic stamp sand converted the area into barren, fallow land. Without a vegetative cover, stamp sand has been eroding into the lakes, adversely affecting aquatic life. Our objective was to perform a greenhouse study, to grow cold-tolerant oilseed crops camelina (Camelina sativa) and field pennycress (Thlaspi arvense) on stamp sand, for the dual purpose of biofuel production and providing a vegetative cover, thereby decreasing erosion. Camelina and field ...


Sun Grant Initiative: The First Fifteen Years, Sun Grant Initiative Feb 2020

Sun Grant Initiative: The First Fifteen Years, Sun Grant Initiative

Sun Grant Initiative Publications and Reports

Executive Summery
The Vision: Building a Biobased Economy
[Page] 4 The Sun Grant Initiative
[Page] 5 Renewing the Mission of Land-Grant Universities
[Page] 5 A Regional Approach
[Page] 5 Reaching National Goals Through Regional Leadership
[Page] 6 Integrating National and Regional Priorities
[Page] 6 Comprehensive and Integrated Systems Approach
[Page] 7 Cultivating Communication

Federal Partnerships
[Page] 8 U.S. Department of Agriculture
[Page] 8 U.S. Department of Energy
[Page] 9 U.S. Department of Transportation

National Impacts
[Page] 11 Overview
[Page] 12 Sustainable Feedstock Development
[Page] 13 Herbaceous Biomass Crops
[Page] 14 Woody Biomass
[Page] 15 Logistics
[Page] 16 ...


Taking It To The Road: Utah Biochar Workshops Increase Knowledge And Lead To Behavior Change, Megan Dettenmaier, Lauren Dupey, Darren Mcavoy Feb 2020

Taking It To The Road: Utah Biochar Workshops Increase Knowledge And Lead To Behavior Change, Megan Dettenmaier, Lauren Dupey, Darren Mcavoy

All Current Publications

This fact sheet describes attitude and behavior changes that have resulted from attending the statewide biochar workshop program. By administering surveys 6 to 8 months following workshops, authors learned that attendees were making biochar and biochar kilns, and that attitudes about biochar remained positive.


Recovering From Industrial Overshoot: Thermal Removal Of Atmospheric Co2, Ted Von Hippel, Sandra Boetcher, Matthew Traum, Farshid Azadian Ph.D., William Mackunis Jan 2020

Recovering From Industrial Overshoot: Thermal Removal Of Atmospheric Co2, Ted Von Hippel, Sandra Boetcher, Matthew Traum, Farshid Azadian Ph.D., William Mackunis

Sustainability Conference

Humanity will soon overshoot a safe level of atmospheric CO2, if it hasn't done so already. Countries, industries, and the global economy need to dramatically and quickly alter their behavior and technology to avoid this dangerous overshoot, yet this appears unlikely. Direct Air Capture of CO2 represents an insurance policy for society - a way of removing excess atmospheric CO2. I will present an approach to this problem based on thermal physics that cools cubic kilometers of air to extract CO2 as it sublimates. I propose a combination of an efficient heat exchanger, radiative cooling, and refrigeration, all at industrial ...


An Action Plan For Economic Prosperity In The Potomac Highlands Region Of West Virginia, Eric Bowen, Patrick Kirby, Monica Miller Jan 2020

An Action Plan For Economic Prosperity In The Potomac Highlands Region Of West Virginia, Eric Bowen, Patrick Kirby, Monica Miller

Bureau of Business & Economic Research

In this final report, we summarize our findings and provide a Strategic Action Plan for the Potomac Highlands region. First, we assess the previous strategic plans covering the region, followed by an analysis of interviews the project team conducted with dozens of employers and other leaders in the community. Lastly, we make our recommendations to enhance the Potomac Highlands region’s economic prosperity.


Water Condensation Collection For Disaster Relief, Tyler Gaydosh Jan 2020

Water Condensation Collection For Disaster Relief, Tyler Gaydosh

Williams Honors College, Honors Research Projects

Numerous populations experience sudden, unexpected circumstances where drinking water supply may be compromised. Current leading response strategies include the delivery of disposable water bottles, a simple and effective way of meeting the demand of fresh drinking water. The lack of reusability results in problems with waste and cost. Any response to provide drinking water to a population in these circumstances must consider a prolonged crisis and these limitations: minimal delivery opportunities, power supply, and waste management (e.g., aftereffects of Hurricane Maria in Puerto Rico). A review of alternatives for water collection was done to determine a viable collection method ...


Burning With Potential: Understanding The Relationship Between Biochar And Agriculture Of The Northern Glaciated Plains Ecoregion, Kaitlyn Abrahamson Jan 2020

Burning With Potential: Understanding The Relationship Between Biochar And Agriculture Of The Northern Glaciated Plains Ecoregion, Kaitlyn Abrahamson

Electronic Theses and Dissertations

Achieving global sustainable agriculture is one of the most incredible challenges of this century, yet many continue to try to solve this problem through the development of precision technologies. Biotechnologies, such as biochar, can perform like a precision technology while protecting agricultural land from soil erosion and fertility loss. The Northern Glaciated Plains ecoregion of the United States is little researched in the benefits from the use of biochar through improved soil nutrient capture and water retention, crop health improvements, and yield increases. The study plot has four sections of corn stover biochar and eight sections of control sections. This ...


Biochar-Based Fertilizer: Supercharging Root Membrane Potential And Biomass Yield Of Rice, Jinkiat Chew, Longlong Zhu, Shaun Nielsen, Ellen Graber, David R. G Mitchell, Josip Horvat, Mohanad Hazim Mohammed, Minglong Liu, Lukas Van Zwieten, Scott Donne, Paul Munroe, Sarasadat Taherymoosavi, Ben Pace, Aditya Rawal, James Hook, Christopher Marjo, Donald Thomas, Genxing Pan, Lianqing Li, Rongjun Bian, Anna Mcbeath, Michael I. Bird, Torsten Thomas, Olivier Husson, Zakaria M. Solaiman, Stephen D. Joseph, Xiaorong Fan Jan 2020

Biochar-Based Fertilizer: Supercharging Root Membrane Potential And Biomass Yield Of Rice, Jinkiat Chew, Longlong Zhu, Shaun Nielsen, Ellen Graber, David R. G Mitchell, Josip Horvat, Mohanad Hazim Mohammed, Minglong Liu, Lukas Van Zwieten, Scott Donne, Paul Munroe, Sarasadat Taherymoosavi, Ben Pace, Aditya Rawal, James Hook, Christopher Marjo, Donald Thomas, Genxing Pan, Lianqing Li, Rongjun Bian, Anna Mcbeath, Michael I. Bird, Torsten Thomas, Olivier Husson, Zakaria M. Solaiman, Stephen D. Joseph, Xiaorong Fan

Australian Institute for Innovative Materials - Papers

2020 The Authors Biochar-based compound fertilizers (BCF) and amendments have proven to enhance crop yields and modify soil properties (pH, nutrients, organic matter, structure etc.) and are now in commercial production in China. While there is a good understanding of the changes in soil properties following biochar addition, the interactions within the rhizosphere remain largely unstudied, with benefits to yield observed beyond the changes in soil properties alone. We investigated the rhizosphere interactions following the addition of an activated wheat straw BCF at an application rates of 0.25% (g·g−1 soil), which could potentially explain the increase of ...


Understanding And Measuring Net Positive Business Strategies, Luke Ruffner Robinson Jan 2020

Understanding And Measuring Net Positive Business Strategies, Luke Ruffner Robinson

Graduate Student Theses, Dissertations, & Professional Papers

Despite their attempts to mitigate ecological impacts through sustainability initiatives, businesses are a major cause of the world's ecological problems. Some progressive businesses are attempting to move beyond “net zero” in terms of achieving neutral environmental impacts and instead are now pursuing a goal of net positive. Net positive refers to the idea that business activities could contribute value-added benefits to earth’s ecological systems, for example, by using technologies that sequester and store carbon. However, except for a handful of high-profile corporate case studies, little is known about how companies are developing their strategies to become net positive ...


Soil Carbon Increased By Twice The Amount Of Biochar Carbon Applied After 6 Years: Field Evidence Of Negative Priming, Humberto Blanco-Canqui, David A. Laird, Emily A. Heaton, Samuel Rathke, Bharat Sharma Acharya Jan 2020

Soil Carbon Increased By Twice The Amount Of Biochar Carbon Applied After 6 Years: Field Evidence Of Negative Priming, Humberto Blanco-Canqui, David A. Laird, Emily A. Heaton, Samuel Rathke, Bharat Sharma Acharya

Agronomy & Horticulture -- Faculty Publications

Applying biochar to agricultural soils has been proposed as a means of sequester-ing carbon (C) while simultaneously enhancing soil health and agricultural sustain-ability. However, our understanding of the long-term effects of biochar and annual versus perennial cropping systems and their interactions on soil properties under field conditions is limited. We quantified changes in soil C concentration and stocks, and other soil properties 6 years after biochar applications to corn (Zea mays L.) and dedicated bioenergy crops on a Midwestern US soil. Treatments were as fol-lows: no-till continuous corn, Liberty switchgrass (Panicum virgatum L.), and low-diversity prairie grasses, 45% big bluestem ...


Indonesia Natural Mineral For Heavy Metal Adsorption: A Review, Grandprix T. M. Kadja, Moh Mualliful Ilmi Dec 2019

Indonesia Natural Mineral For Heavy Metal Adsorption: A Review, Grandprix T. M. Kadja, Moh Mualliful Ilmi

Journal of Environmental Science and Sustainable Development

Indonesia has abundant mineral resources used as natural adsorbent materials for the absorption of heavy metal. Among these are natural zeolites, clay, and ashes. These natural materials showed high performance adsorption capacity with respects to their low cost and high availability. Several research reports had been published for studying the performance of the natural materials as adsorbent of several heavy metals i.e., Hg, Pb, Fe, Cd, Cr, Zn, Ni, and Cu by examining the effect of various factors, including pH, contact time, initial concentration, temperature, and dosage. Furthermore, to determine the adsorption rate, mechanism, and efficiency of natural materials ...


Do Coffee Agroforestry Systems Always Improve Soil Carbon Stocks Deeper In The Soil?—A Case Study From Turrialba, Costa Rica, Nilovna Chatterjee, P. K. Ramachandran Nair, Vimala D. Nair, Abhishek Bhattacharjee, Elias De Melo Virginio Filho, Rheinhold G. Muschler, Martin R.A. Noponen Dec 2019

Do Coffee Agroforestry Systems Always Improve Soil Carbon Stocks Deeper In The Soil?—A Case Study From Turrialba, Costa Rica, Nilovna Chatterjee, P. K. Ramachandran Nair, Vimala D. Nair, Abhishek Bhattacharjee, Elias De Melo Virginio Filho, Rheinhold G. Muschler, Martin R.A. Noponen

Agronomy & Horticulture -- Faculty Publications

Shaded perennial agroforestry systems (AFS) are regarded as desirable land‐use practices that improve soil carbon sequestration. However, most studies assume a positive correlation between above ground and below ground carbon without considering the effect of past and current land management, textural variations (silt and clay percentage), and such other site‐specific factors that have a major influence on the extent of soil C sequestration. We assessed SOC stock at various depths (0–10, 10–30, 30–60, and 60–100 cm) in shaded perennial coffee (Coffea arabica L.) AFS in a 17‐ year‐old experimental field at the Centro ...


Evaluation Of The Mechanisms And Effectiveness Of Nano-Hydroxides, Wood And Dairy Manure-Derived Biochars To Remove Fluoride And Heavy Metals From Water, Anna Rose Wallace, Wenjie Sun Dr, Chunming Su Dr Dec 2019

Evaluation Of The Mechanisms And Effectiveness Of Nano-Hydroxides, Wood And Dairy Manure-Derived Biochars To Remove Fluoride And Heavy Metals From Water, Anna Rose Wallace, Wenjie Sun Dr, Chunming Su Dr

Civil and Environmental Engineering Theses and Dissertations

The development of effective treatment processes for the removal contaminants, such as fluoride and heavy metals, from polluted water have been urgently needed due to serious environmental health and safety concerns. In this dissertation, a variety of materials including various (hydro)oxide nanomaterials, biochars and surface modified biochar were studied to evaluate their effectiveness and mechanism on removing fluoride or mixed heavy metals from water.

In the Chapter 2, this study investigated the adsorptive removal of fluoride from water using various (hydro)oxide nanomaterials, focusing on ferrihydrite, hydroxyapatite (HAP) and brucite, which have the potential to be used as sorbents ...