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Browsing School of Engineering by Author "Wazne, Mahmoud"

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Browsing School of Engineering by Author "Wazne, Mahmoud"

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  • Evaluation of ettringite-related swelling mechanisms for treated chromite ore processing residue 
    Wazne, Mahmoud; Moon, Deok Hyun; Dermatas, Dimitris; Sanchez, Adriana; Hoon Cheong, Kyung; Park, Jeong-Hun (2016-06-10)
    Accelerated one-dimensional unconfined swell tests were conducted for ferrous sulfate chromite ore processing residue (COPR) field-treated samples. The field-treated samples were subjected to wet and dry cycles over 100 ...
  • Evaluation of the treatment of chromite ore processing residue by ferrous sulfate and asphalt 
    Moon, Deok Hyun; Wazne, Mahmoud; Koutsospyros, Agamemnon; Christodoulatos, Christos; Gevgilili, Halil; Malik, Moinuddin; Kalyon, Dilhan M. (2016-03-01)
    The effectiveness of the treatment of chromite ore processing residue (COPR) with ferrous sulfate and encapsulation into asphalt were explored separately and in combination. The asphalt treatment was conducted by mixing ...
  • Geotechnical Performance of Dredged Material—Steel Slag Fines Blends 
    Malasavage, Nicholas; Jagupilla, Santhi; Grubb, Dennis; Wazne, Mahmoud; Coon, William (2016-02-29)
    This paper contains the results of a combined laboratory and field demonstration project exploring the use of dredged material (DM) blended with steel slag fines [SSF; 9.5 mm () minus] as synthetic fill materials. The ...
  • Immobilization of As and Pb in contaminated sediments using waste resources 
    Moon, Deok Hyun; Oh, Da-Yeon; Wazne, Mahmoud; Park, Jeong-Hun (2016-03-02)
    As and Pb-contaminated sediment obtained from the Nakdong Lake and Yeongsan River in the Republic of Korea was stabilized using a combination of calcined oyster shell (COS), waste cow bone (WCB) and coal mine drainage ...
  • Immobilization of copper, lead, and tungsten in mixed munitions firing range–contaminated soils by various amendments 
    Wazne, Mahmoud; Karachalios, Antonis; Betancur, Juan Nicolas; Christodoulatos, Christos (2017-07-26)
    Batch and column leaching tests were conducted to assess the simultaneous stabilization of copper (Cu), lead (Pb), and tungsten (W) in eight representative contaminated firing range soils in the United States using various ...
  • Immobilization of Lead, Tungsten, and Phosphate by Steel Slag Fines: Metals Thresholding and Rate Studies 
    Wazne, Mahmoud; Jagupilla, S.; Grubb, D. (2016-06-10)
    This study presents an evaluation of 9.5-mm minus steel slag fines (SSF) to immobilize lead (Pb), tungsten (W), and phosphate (P as PO4PO4) at total contaminant dosing concentrations of 10,000  mg/kg10,000  mg/kg (W, PO4PO4) ...
  • Impact of brownmillerite hydration on Cr(VI) sequestration in chromite ore processing residue 
    Moon, Deok Hyun; Wazne, Mahmoud (2016-02-29)
    Experimental and modeling studies were conducted to delineate the reaction progress of chromite ore processing residue (COPR) upon hydration and the roles of brownmillerite and calcium aluminum chromium oxide hydrates (CAC) ...
  • Influence of Ca2+ and Suwannee River Humic Acid on aggregation of silicon nanoparticles in aqueous media 
    Liu, Xuyang; Wazne, Mahmoud; Chou, Tsengming; Xiao, Ru; Shiyou, Xu (2016-02-29)
    Liu, X., Wazne, M., Chou, T., Xiao, R., & Xu, S. (2011). Influence of Ca 2+ and Suwannee River Humic Acid on aggregation of silicon nanoparticles in aqueous media. Water research, 45(1), 105-112.
  • Investigation of barium treatment of chromite ore processing residue 
    Wazne, Mahmoud; Chrysochoou, Maria; Dermatas, Dimitris; Moon, Doek Hyun; Christodoulatos, Christos; French, Chris; Morris, John; Kaouris, Maria (2017-08-10)
    Barium addition to chromite ore processing residue COPR was investigated in order to address a the pronounced heaving phenomena that are associated with mainly the presence of ettringite and b hexavalent chromium ...
  • Leaching Mechanisms of Cr(VI) from Chromite Ore Processing Residue 
    Wazne, Mahmoud; Jagupilla, Santhi Chandra; Moon, Deok Hyun; Christodoulatos, Christos; Koutsospyros, Agamemnon (2016-03-01)
    Batch leaching tests, qualitative and quantitative x-ray powder diffraction (XRPD) analyses, and geochemical modeling were used to investigate the leaching mechanisms of Cr(VI) from chromite ore processing residue (COPR) ...
  • Long-term treatment issues with chromite ore processing residue (COPR) 
    Moon, Deok Hyun; Wazne, Mahmoud; Dermatas, Dimitris; Christodoulatos, Christos; Sanchez, Adriana M.; Grubb, Dennis G.; Chrysochoou, Maria; Kim, Min Gyu (2016-03-01)
    A pugmill treatability study was conducted to remediate chromite ore processing residue (COPR) using ferrous sulfate heptahydrate (FeSO4·7H2O) as a reductant. Two different types of COPR, with respect to particle size and ...
  • The mechanisms of uranium removal from water by iron oxyhydroxides, nanocrystalline titanium dioxide, and elemental iron 
    Wazne, Mahmoud (Stevens Institute of Technology, 2018-09-17)
    The removal mechanisms and efficiencies of uranium from water by iron oxyhydroxides, nanocrystalline titanium dioxide, and elemental iron were investigated in artificial and natural systems. Batch tests, zeta potential ...
  • Nano-aluminum 
    Doshi, Reeti; Braida, Washington; Christodoulatos, Christos; Wazne, Mahmoud; Connor, Gregory (2016-03-01)
    Nano-aluminum is being used in increasing quantities as energetic material. This research addresses the transport of two types of nanosized aluminum particles (with aluminum oxide, or carboxylate ligand coating, Alex and ...
  • Nitrate removal from water by quaternized pine bark using choline based ionic liquid analogue 
    Karachalios, Antonis; Wazne, Mahmoud (2016-02-29)
    BACKGROUND: The objective of this study was to quaternize pine bark (PB) wood residues using green chemistry and to use the quaternized PB to remove nitrate (NO3−) from water. The quaternization process was achieved by ...
  • Particle size and pH effects on remediation of chromite ore processing residue using calcium polysulfide (CaS5) 
    Moon, Deok Hyun; Wazne, Mahmoud; Jagupilla, Santhi Chandra; Christodoulatos, Christos; Kim, Min Gyu; Koutsospyros, Agamemnon (2016-03-01)
    A long-term bench scale treatability study was performed to assess the ability to remediate chromite ore processing residue (COPR) using calcium polysulfide (CaS5). COPR materials were characterized with respect to particle ...
  • Phosphate removal from aqueous solution using ZVI/sand bed reactor 
    Wazne, Mahmoud; Sleiman, Nathalie; Deluchat, Veronique; Mallet, Martine; Courtin-Nomade, Alexandra; Kazpard, Veronique (2016-06-09)
    This research reports on phosphate removal from aqueous solution using ZVI/sand packed columns. The influence of column preconditioning, consisting of ZVI pre-oxidation before feeding the columns with phosphate solution, ...
  • Phosphate removal from water by modified pine bark using ionic liquid analog 
    Wazne, Mahmoud; Karachalios, Antonis (2016-06-10)
    Pine bark (PB) wood residues were chemically modified and used as anion exchange resins to remove phosphate (PO) from water. The modification process involved reacting a choline-based ionic liquid analog, comprised of a ...
  • Remediation of chromite ore processing residue using ferrous sulfate and calcium polysulfide 
    Wazne, Mahmoud; Moon, Deok Hyun; Jagupilla, Santhi Chandra; Christodoulatos, Christos; Dermatas, Dimitris; Chrysochoou, Maria (2016-03-01)
    Batch tests were conducted to assess the potential use of ferrous sulfate and calcium polysulfide for the remediation of chromite ore processing residue (COPR). The remediation process entails addition of ferrous sulfate ...
  • Removal of Depleted Uranium from Water Using Titanium Dioxide 
    Wazne, Mahmoud; Choy, Christine Chin; Meng, Xiaoguang (2017-04-07)
    Groundwater contamination with depleted uranium (DU) is a concern in many areas where uranium mining or uranium processing and recycling have occurred. Uranium typically migrates with groundwater as uranyl carbonates and ...
  • Reservoir sediments 
    Wazne, Mahmoud; Ammar, Rawaa; Kazpard, Veronique; El Samrani, Antoine; Amacha, Nabil; Saad, Zeinab; Chou, Lei (2016-06-09)
    This study delineates the physical, chemical, and biological effects resulting from anthropogenic and endogenic activities in a sensitive dammed reservoir situated in a semi-arid region. The reservoir is characterized by ...

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