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Value Added Products From Nonconventional Agricultural Biomass Waste Through Thermochemical Transformation, Nicolas A. Sarmiento
Value Added Products From Nonconventional Agricultural Biomass Waste Through Thermochemical Transformation, Nicolas A. Sarmiento
Electronic Thesis and Dissertation Repository
The alteration of temperature patterns around the world has become noticeable in the recent decade. Sea level rise, wildfires, and high temperatures have made people realize that climate change is affecting humans more tangibly than ever. Therefore, the United Nations have pushed to make policies to mitigate this problematic situation. This research investigated the production of biochar from agricultural waste through pyrolysis for fighting climate change and adding value to waste. Experiments in a laboratory scale reactor were conducted to obtain yields of pyrolytic products. Then, analysis of products provided data for characterization and the LCA of the tomato plant …
Evaluación De Los Residuos De Sacha Inchi Tratados Mediante El Proceso De Pirólisis Como Medio Filtrante Para La Remoción De Cromo En Aguas Potenciadas, Luisa Fernanda Cárdenas Beltrán, Mónica Tatiana Ramón Uyabán
Evaluación De Los Residuos De Sacha Inchi Tratados Mediante El Proceso De Pirólisis Como Medio Filtrante Para La Remoción De Cromo En Aguas Potenciadas, Luisa Fernanda Cárdenas Beltrán, Mónica Tatiana Ramón Uyabán
Ingeniería Ambiental y Sanitaria
Actualmente, la mayoría de las fuentes hídricas en Colombia presentan altos niveles de cromo hexavalente, el cual se genera debido a acciones antropogénicas como vertimientos de industriales textiles, curtiembres de cueros y galvanoplastia, entre otras. Muchas de estas industrias vierten sus aguas sin ser tratadas previamente, generando problemáticas tanto ambientales como de salud pública, debido a que el cromo en su estado hexavalente es altamente toxico; además, su alto potencial de bioacumulación en plantas y animales produce toxicidad en el agua, fauna, flora y suelo (Téllez & Carvajal, 2004). En este contexto se han venido buscando soluciones sostenibles que permitan …
Pyrolysis For Estrogens Removal From Wastewater Solids, Thomas C. Hoffman
Pyrolysis For Estrogens Removal From Wastewater Solids, Thomas C. Hoffman
Master's Theses (2009 -)
Wastewater treatment processes are not designed to remove estrogenic micropollutants and therefore when wastewater biosolids are land applied estrogenic micropollutants are discharged to the environment. Release of estrogenic compounds has deleterious effects on the terrestrial environment. Public concern stemming from micropollutants may reduce the value of biosolids which are important to water resource reclamation facilities (WRRF) as by-products. The objective of this research was to evaluate pyrolysis, the partial decomposition of organic material in an oxygen-deprived system under high temperatures, as a sustainable solution to remove estrogenic compounds from biosolids while producing a useable soil conditioner called biochar. Batch pyrolysis …
Characterization Of Two Biochars Derived From Horse Muck And Their Ability To Reduce Pathogen Transport In Soil, David Griffith
Characterization Of Two Biochars Derived From Horse Muck And Their Ability To Reduce Pathogen Transport In Soil, David Griffith
Theses and Dissertations--Biosystems and Agricultural Engineering
Biochars have been created and characterized from a variety livestock manure biomass including poultry, dairy, and swine. However, no research has been conducted on the physical and chemical makeup of biochar pyrolyzed from horse muck. Two horse muck derived biochars containing either straw (HS) or woodchip (HW) bedding were pyrolyzed at 700°C and characterized for their physical and chemical properties. Tests revealed both biochars had high alkalinity, moderate specific conductivity, and low surface area as compared to other biochars in the literature. HS contained more mineral structures than HW. Scanning electron microscopy presented differences in particle shape, size, and presence …
Fate Of Micropollutants During Pyrolysis Of Biosolids, John Ross
Fate Of Micropollutants During Pyrolysis Of Biosolids, John Ross
Master's Theses (2009 -)
Approximately 250 tons of organic micropollutants, including pharmaceuticals, antimicrobials, and hormones, are discharged to the environment during land application of wastewater biosolids annually. Reusing wastewater biosolids is vital to the sustainability of wastewater treatment, but current treatment processes do not remove micropollutants from biosolids in an efficient manner. Pyrolysis―the heating of biomass to temperatures between 400 and 800 °C under oxygen-free conditions―was proposed as a biosolids treatment process that could produce a beneficial soil amendment product, biochar, and remove micropollutants. The objective of this research was to determine the effect of pyrolysis temperature and residence time on the removal of …