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Articles 1 - 14 of 14
Full-Text Articles in Entire DC Network
Application Of Biochar For The Treatment Of Retting Effluent And Use As Growth Substrate, Neha Batta, Spencer M. Heuchan, Franco Berruti, Cesar Moreira Valenzuela
Application Of Biochar For The Treatment Of Retting Effluent And Use As Growth Substrate, Neha Batta, Spencer M. Heuchan, Franco Berruti, Cesar Moreira Valenzuela
Bio-Char III: Production, Characterization and Applications
Please click Additional Files below to see the full abstract
A Review On N-Doped Biochar For Oxidative Degradation Of Organic Contaminants In Wastewater By Persulfate Activation, Yaxuan Gao, Wenran Gao, Haonan Zhu, Haoran Chen, Shanshan Yan, Ming Zhao, Hongqi Sun, Junjie Zhang, Shu Zhang
A Review On N-Doped Biochar For Oxidative Degradation Of Organic Contaminants In Wastewater By Persulfate Activation, Yaxuan Gao, Wenran Gao, Haonan Zhu, Haoran Chen, Shanshan Yan, Ming Zhao, Hongqi Sun, Junjie Zhang, Shu Zhang
Research outputs 2022 to 2026
The Persulfate-based advanced oxidation process is the most efficient and commonly used technology to remove organic contaminants in wastewater. Due to the large surface area, unique electronic properties, abundant N functional groups, cost-effectiveness, and environmental friendliness, N-doped biochars (NBCs) are widely used as catalysts for persulfate activation. This review focuses on the NBC for oxidative degradation of organics-contaminated wastewater. Firstly, the preparation and modification methods of NBCs were reviewed. Then the catalytic performance of NBCs and modified NBCs on the oxidation degradation of organic contaminants were discussed with an emphasis on the degradation mechanism. We further summarized the detection technologies …
Uv Sulfite Advanced Reduction Process For Pfos Transformation In Wastewater Treatment, Cassidy Rae Yates
Uv Sulfite Advanced Reduction Process For Pfos Transformation In Wastewater Treatment, Cassidy Rae Yates
Master's Theses and Capstones
Most nutrients and contaminants within municipal wastewaters are removed through physical, chemical, and biological treatment methods. Per- and polyfluoroalkyl substances (PFAS) are a class of contaminants of emerging concern (CECs) that are concentrated in wastewater treatment facilities (WWTFs) from municipal, industrial, and commercial sources in communities. PFAS are poorly removed in conventional municipal wastewater treatment because these facilities are generally not designed for treatment of low-level CECs. Some PFAS leave WWTFs through aqueous effluent, while others partition to solids and are handled in sludges due to properties based on the degree of fluorination, chain length, and headgroup. As the last …
Legacy And Emerging Contaminants In Water And Wastewater, P. Chakraborty, Daniel D. Snow
Legacy And Emerging Contaminants In Water And Wastewater, P. Chakraborty, Daniel D. Snow
School of Natural Resources: Faculty Publications
No abstract provided.
Hospital Effluents And Wastewaters Treatment Plants: A Source Of Oxytetracycline And Antimicrobial-Resistant Bacteria In Seafood, Bozena Mccarthy, Samuel Obeng Apori, Michelle Giltrap, Abhijnan Bhat, James Curtin, Furong Tian
Hospital Effluents And Wastewaters Treatment Plants: A Source Of Oxytetracycline And Antimicrobial-Resistant Bacteria In Seafood, Bozena Mccarthy, Samuel Obeng Apori, Michelle Giltrap, Abhijnan Bhat, James Curtin, Furong Tian
Articles
The present study employs a data review on the presence and aggregation of oxytetracycline (OTC) and resistance (AMR) bacteria in wastewater treatment plants (WWTPs), and distribution of the contaminated effluent with the aid of shallow and deep ocean currents. The study aims to determine the fate of OTC, AMR bacteria in seafood, and demonstrate a relationship between AMR levels and human health. This review includes (1) OTC, (2) AMR bacteria, (3) heavy metals in aquatic environments, and their relationship. Few publications describe OCT in surface waters. Although, OTC and other tetracyclines were found in 10 countries in relatively low concentrations, …
Wastewater Remediation Technologies Using Macroscopic Graphene-Based Materials: A Perspective, Rajan Arjan Kalyan Hirani, Abdul Hannan Asif, Nasir Rafique, Lei Shi, Shu Zhang, Hong Wu, Hongqi Sun
Wastewater Remediation Technologies Using Macroscopic Graphene-Based Materials: A Perspective, Rajan Arjan Kalyan Hirani, Abdul Hannan Asif, Nasir Rafique, Lei Shi, Shu Zhang, Hong Wu, Hongqi Sun
Research outputs 2014 to 2021
Three-dimensional (3D) graphene-based macrostructures are being developed to combat the issues associated with two-dimensional (2D) graphene materials in practical applications. The 3D macrostructures (3DMs), for example, membranes, fibres, sponges, beads, and mats, can be formed by the self-assembly of 2D graphene-based precursors with exceptional surface area and unique chemistry. With rational design, the 3D macrostructures can then possess outstanding properties and exclusive structures. Thanks to various advantages, these macrostructures are competing in a variety of applications with promising performances unlike the traditional activated carbons, biochars and hydrochars, which have less flexibilities for modifications towards versatile applications. However, despite having such …
Preparation Of Activated Biochar-Supported Magnetite Composite For Adsorption Of Polychlorinated Phenols From Aqueous Solutions, Byung-Moon Jun, Yejin Kim, Jonghun Han, Yeomin Yoon, Chang Min Park
Preparation Of Activated Biochar-Supported Magnetite Composite For Adsorption Of Polychlorinated Phenols From Aqueous Solutions, Byung-Moon Jun, Yejin Kim, Jonghun Han, Yeomin Yoon, Chang Min Park
Faculty Publications
For this study, we applied activated biochar (AB) and its composition with magnetite (AB-Fe3O4) as adsorbents for the removal of polychlorophenols in model wastewater. We comprehensively characterized these adsorbents and performed adsorption tests under several experimental parameters. Using FTIR, we confirmed successful synthesis of AB-Fe3O4 composite through cetrimonium bromide surfactant. We conducted adsorption tests using AB and AB-Fe3O4 to treat model wastewater containing polychlorophenols, such as 2,3,4,6-Tetrachlorophenol (TeCP), 2,4,6-Trichlorophenol (TCP), and 2,4-Dichlorophenol (DCP). Results of the isotherm and the kinetic experiments were well adapted to Freundlich’s isotherm model and the …
Wastewater Remediation Using Modified Biochars, Griffin Allen Burk
Wastewater Remediation Using Modified Biochars, Griffin Allen Burk
Theses and Dissertations
Water polluted by metals and phosphates can be hazardous to both the environment and human health. The aim of this study was used to improve understanding of the adsorption properties of low-cost, green adsorbents for removal of pollutants from aqueous solution. Biochar was used as an adsorbent, which was produced from the gasification of pine wood waste and the fast pyrolysis of Douglas fir. Biochar is a bio-renewable product that can easily be modified, and the cost is lower compared to other adsorbents like activated carbon. The gasifier produced biochar was modified by coating the biochar surface with chitosan. Douglas …
Biosolids-Derived Biochar For Micropollutant Removal From Wastewater, Lee Kimbell
Biosolids-Derived Biochar For Micropollutant Removal From Wastewater, Lee Kimbell
Master's Theses (2009 -)
Trace organic compounds including antibiotics, hormones, pharmaceuticals and personal care products are discharged to the environment with liquid and solid effluent streams from water resource recovery facilities. These compounds are referred to as micropollutants, and can have negative impacts in receiving waters. Current wastewater treatment processes are not specifically designed to remove micropollutants, and many of these compounds are recalcitrant to conventional treatment technologies. Triclosan (TCS) was selected as a representative micropollutant in this study due to frequent detection in liquid effluents, residual biosolids, and surface waters. Pyrolysis - the thermochemical decomposition of organic matter at elevated temperatures in the …
Recovery Of Agricultural Nutrients From Biorefineries, Daniel Elliott Carey, Yu Yang, Patrick J. Mcnamara, Brooke Mayer
Recovery Of Agricultural Nutrients From Biorefineries, Daniel Elliott Carey, Yu Yang, Patrick J. Mcnamara, Brooke Mayer
Civil and Environmental Engineering Faculty Research and Publications
This review lays the foundation for why nutrient recovery must be a key consideration in design and operation of biorefineries and comprehensively reviews technologies that can be used to recover an array of nitrogen, phosphorus, and/or potassium-rich products of relevance to agricultural applications. Recovery of these products using combinations of physical, chemical, and biological operations will promote sustainability at biorefineries by converting low-value biomass (particularly waste material) into a portfolio of higher-value products. These products can include a natural partnering of traditional biorefinery outputs such as biofuels and chemicals together with nutrient-rich fertilizers. Nutrient recovery not only adds an additional …
Removal Of Target Ppcps From Secondary Effluent Using Aops And Novel Adsorbents, Venkateswara Reddy Kandlakuti
Removal Of Target Ppcps From Secondary Effluent Using Aops And Novel Adsorbents, Venkateswara Reddy Kandlakuti
Electronic Thesis and Dissertation Repository
Atenolol (β-blocker), Clofibric Acid (Lipid regulators) and Diclofenac (Anti-inflammatory) are the drugs widely used and reported to have adverse effects on fish and other organisms. These drugs are found at trace levels in lakes, rivers and sewage treatment plants and conventional treatment plants are ineffective to eliminate these at those levels. A high resolution LC-MS/MS was used to quantify these drugs at low levels. Various advanced oxidation methods were used for the present research to eliminate these drugs from secondary effluent. Complete removal of PPCPs was achieved by synthesizing immobilized TiO2 on a stainless steel mesh and using a combination …
Spatially Explicit Life Cycle Assessment: Opportunities And Challenges Of Wastewater-Based Algal Biofuels In The United States, Javad Roostaei, Yongli Zhang
Spatially Explicit Life Cycle Assessment: Opportunities And Challenges Of Wastewater-Based Algal Biofuels In The United States, Javad Roostaei, Yongli Zhang
Civil and Environmental Engineering Faculty Research Publications
This work presented a Spatially-Explicit-High-Resolution Life Cycle Assessment (SEHR-LCA) model for wastewater-based algal biofuel production, by integrating life cycle assessment, GIS analysis, and site-specific Wastewater Treatment Plants (WWTPs) data analysis. Wastewater resources, land availability, and meteorological variation were analyzed for algae cultivation. Three pathways, Microwave Pyrolysis, hydrothermal liquefaction, and lipid extraction were modeled for bio-oil conversion. This model enables the assessment of seasonal and site-specific variations in productivity and environmental impacts of wastewater-based algal bio-oil across the whole U.S. Model results indicate that wastewater-based algal bio-oil can provide an opportunity to increase national biofuel output. The potential production of algal …
Granular Biochar Compared With Activated Carbon For Wastewater Treatment And Resource Recovery, Tyler M. Huggins, Alexander Haeger, Justin C. Biffinger, Zhiyong Jason Ren
Granular Biochar Compared With Activated Carbon For Wastewater Treatment And Resource Recovery, Tyler M. Huggins, Alexander Haeger, Justin C. Biffinger, Zhiyong Jason Ren
U.S. Navy Research
Granular wood-derived biochar (BC) was compared to granular activated carbon (GAC) for the treatment and nutrient recovery of real wastewater in both batch and column studies. Batch adsorption studies showed that BC material had a greater adsorption capacity at the high initial concentrations of total chemical oxygen demand (COD-T) (1200 mg L-1), PO4 (18 mg L-1), and NH4 (50 mg L-1) compared to GAC. Conversely the BC material showed a lower adsorption capacity for all concentrations of dissolved chemical oxygen demand (COD-D) and the lower concentrations of PO …
Emerging Investigators Series: Pyrolysis Removes Common Microconstituents Triclocarban, Triclosan, And Nonylphenol From Biosolids, J. J. Ross, Daniel Zitomer, T. R. Miller, C. A. Weirich, Patrick J. Mcnamara
Emerging Investigators Series: Pyrolysis Removes Common Microconstituents Triclocarban, Triclosan, And Nonylphenol From Biosolids, J. J. Ross, Daniel Zitomer, T. R. Miller, C. A. Weirich, Patrick J. Mcnamara
Civil and Environmental Engineering Faculty Research and Publications
Reusing biosolids is vital for the sustainability of wastewater management. Pyrolysis is an anoxic thermal degradation process that can be used to convert biosolids into energy rich py-gas and py-oil, and a beneficial soil amendment, biochar. Batch biosolids pyrolysis (60 minutes) revealed that triclocarban and triclosan were removed (to below quantification limit) at 200 °C and 300 °C, respectively. Substantial removal (>90%) of nonylphenol was achieved at 300 °C as well, but 600 °C was required to remove nonylphenol to below the quantification limit. At 500 °C, the pyrolysis reaction time to remove >90% of microconstituents was less than …