Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 3 of 3
Full-Text Articles in Entire DC Network
Multiphysics Simulation Of Biochar Adsorption Rates, Joseph Salerno
Multiphysics Simulation Of Biochar Adsorption Rates, Joseph Salerno
Graduate Theses & Non-Theses
An accepted carbon capture and sequestration (CCS) method to remove carbon dioxide from the atmosphere is via adsorption onto biochar. While the characteristics of the char are important and greatly impact the adsorption of CO2 molecules, the conditions in which the adsorption occurs are equally critical. Factors such as char particle size and quantity, environmental temperature and pressure, as well as outside driving mechanisms such as vibration frequency, driving force, and flow rates play an impactful role on how the char adsorbs CO2 particles. These factors and their effects will be studied in multiphysics simulations performed using methods that work …
Process Intensification For Rare Earth Elements Adsorption By Resonant Vibratory Mixing, Oluwatosin Adebayo, Richard Ladouceur, Zainab Nasrullah
Process Intensification For Rare Earth Elements Adsorption By Resonant Vibratory Mixing, Oluwatosin Adebayo, Richard Ladouceur, Zainab Nasrullah
Graduate Theses & Non-Theses
The adsorption capacity for six rare earth elements (Lanthanum, Terbium, Neodymium, Dysprosium, Praseodymium, and Holmium) by biochar produced from hemp feedstock was investigated. An innovative approach to enhancing the adsorption of rare earth elements using biochar was studied and investigates the potential of resonant vibratory mixing (RVM) as a process intensification method compared to conventional mechanical mixing for the adsorption process. Hemp hurds as source of biomass was pyrolyzed to produce biochar at a temperature of 4500C for 60 minutes. The biochar was characterized by FTIR (Fourier Transform Infra-red), SEM (Scanning Electron Microscopy), Surpass 3 Electrokinetic solid surface analyzer, and …
Design Improvements To Sulfate-Reducing Bioreactors For Mine-Influenced Stream Remediation In Cold Climates, Katrina Moreira
Design Improvements To Sulfate-Reducing Bioreactors For Mine-Influenced Stream Remediation In Cold Climates, Katrina Moreira
Graduate Theses & Non-Theses
Mine-influenced water (MIW), a waste water product containing heavy metals and sulfates, is a significant pollution source to waters in Montana. Implementing a low cost, passive treatment system, such as a sulfate-reducing bioreactor (SRBR), is desired for remediation of streams influenced by heavy metals in remote locations. SRBR systems operate by using organic matter and sulfate-rich water to precipitate and immobilize dissolved heavy metals. Sulfate-reducing bacteria utilize the organic matter as an electron donor to convert sulfate to sulfide, and then sulfide in the bioreactor is utilized to precipitate heavy metals. Under ideal operating conditions, SRBR systems can remove >98% …