Results 131 to 140 of about 369,076 (309)
Freshwater biology and water supply in Britain [PDF]
, 1946 This paper is designed to give a general account of freshwater biology as it bears on waterworks practice. Most water that is used for consumption will commonly go through a storage reservoir.
Gardiner, A.C. +2 more
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Boric Acid Post‐Modified [Al]ZSM‐5 Zeolites: Properties, Acidity, and Ethanol/Ethene Conversion
Chemistry – A European Journal, EarlyView.The modification of MFI zeolites with boric acid leads to the formation of framework boron, unstable surface species, and unbound deposits. Relevant BAS for catalysis and access to pores are strongly reduced. The boric acid is removed upon converting C1 or C2 alcohols and ethene. ABSTRACT The effect of boric acid post‐modification on [Al]ZSM‐5 zeolites
Zheng Li +3 more
wiley +1 more source
Clearing Alaskan water supply impoundments: management, laboratory study, and literature review [PDF]
, 1976 The literature review prepared in conjunction with this study is contained in IWR-67-A, published separately as "Clearing Alaskan Water Supply Impoundments: Literature Review" by the Institute of Water Resources, University of Alaska, Fairbanks, Alaska.
Justice, Stanley R., Smith, Daniel W.
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The Canadian Journal of Chemical Engineering, EarlyView.Key improvements obtained by incorporating nanoparticles into a lab‐scale SAGD process configuration. The bar plots show enhanced oil recovery, reduced viscosity, and increased asphaltene adsorption in nanoparticle‐assisted scenarios compared with conventional SAGD.
Luis Prada +6 more
wiley +1 more source
Method of purifying metallurgical grade silicon employing reduced pressure atmospheric control [PDF]
, 1979 A method in which a quartz tube is charged with chunks of metallurgical grade silicon and/or a mixture of such chunks and high purity quartz sand, and impurities from a class including aluminum, boron, as well as certain transition metals including ...
Chaney, R. E. +2 more
core +1 more source
Tunable amylopectin graft copolymers for flocculating and dewatering iron ore tailings
The Canadian Journal of Chemical Engineering, EarlyView.Abstract Polyacrylamide (PAM), the standard flocculant for mining tailings, often produces turbid supernatants and poorly dewatered sediments, limiting water reuse and tailings densification. We synthesized amylopectin‐graft‐poly[(2‐methacryloyloxy)ethyl]trimethylammonium chloride (AP‐g‐PMETAC) copolymers with systematically varied graft frequency (N =
Gustavo P. Zago +2 more
wiley +1 more source
The Canadian Journal of Chemical Engineering, EarlyView.This research explored South African iron‐rich sand (SAIRS) as a natural catalyst for light‐mediated wet peroxide oxidation of methyl orange dye in wastewater and at an optimized of conditions of 3500 mg/L catalyst dose, 6 mM H2O2, and pH 2.5, SAIRS achieved 94% methyl orange degradation within 90 min under visible light.
Aaliyah Ebrahim +3 more
wiley +1 more source
Preparation and Characterization of Lime Activated Unfired Bricks Made with Industrial Wastes [PDF]
, 2013 Utilization of fly ash can reduces the solid waste disposal problem and minimization of pollution also. Conventional production of bricks usually utilizes clay and shale as the source material and requires high temperature (900– 1000 °C) kiln firing ...
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Characteristics and adsorption properties of iron-coated sand
Water Science and Technology, 1997 This study was conducted to develop a process for coating hydrated iron oxide on the surface of quartz sand to utilize the adsorbent properties of the coating and the filtration properties of the sand. Three coating parameters were investigated: pH, Fe concentration at which iron oxide was prepared, and the coating temperature.
openaire +1 more source
A Fast and Highly Stable Aqueous Calcium‐Ion Battery for Sustainable Energy Storage
ChemSusChem, Volume 18, Issue 6, March 15, 2025.Aqueous batteries provide a low‐cost, safer alternative to lithium‐ion batteries, but their viability is often limited by rapid electrode degradation. This study shows that replacing K+ with divalent Ca2+ ions in the electrolyte significantly boosts the stability of both copper hexacyanoferrate cathodes and polyimide anodes, enabling fast‐charging ...
Raphael L. Streng +4 more
wiley +1 more source