Results 91 to 100 of about 72,213 (262)

In situ Generation of Fluoride Catalysts for CO2‐to‐Formic Acid Conversion With Silicon Reducing Agent

Chemistry – A European Journal, EarlyView.
Reductive conversion of CO2 to formic acid with waste silicon reducing agent catalyzed by in situ generation of active fluoride species from a tertiary amine, protonic acid, and simple inorganic fluoride salt, such as KF and NaF. ABSTRACT The activation and catalytic reduction of carbon dioxide (CO2) using silicon‐based reducing agents is an important ...
S. M. A. Hakim Siddiki, Yusuke Tanimura, Mariko Honda, Shingo Hasegawa, Kazuo Namba, Yuichi Manaka, Ken Motokura   +6 more
wiley   +1 more source

Operation of an activated sludge plant for fellmongery wastewater treatment : a thesis submitted in partial fulfilment of the requirements of the degree of Master of Technology in Environmental Engineering at Massey University, Palmerston North, New Zealand [PDF]

, 2000
Activated sludge is one of the most common wastewater-treatment processes used to reduce pollutant loads on the receiving environment. For efficient operation, there must be an effective process control and operation strategy in place to ensure that ...
Bourke, Christopher Denis
core  

Municipal wastewater treatment with pond technology : historical review and future outlook

, 2020
Facing an unprecedented population growth, it is difficult to overstress the assets for wastewater treatment of waste stabilization ponds (WSPs), i.e. high removal efficiency, simplicity, and low cost, which have been recognized by numerous scientists ...
Goethals, Peter, Ho, Long Tuan
core   +1 more source

Bio-Processes of the Oxidation Ditch When Subjected to a Sub-Arctic Climate [PDF]

, 1972
Alaska's far northern area is sparsely populated primarily because of a severe climate which varies from northern temperate to Arctic. Construction and power costs are high. Skilled operating personnel are scarce and expensive, if available. Receiving
Murphy, R. Sage, Ranganathan, K. R.
core  

Synthesizing polyethersulphone membranes with hybrid iron/nickel nanoparticles for dyes removal: An efficient biogenesis approach

The Canadian Journal of Chemical Engineering, EarlyView.
Abstract Industrial wastewater contamination by azo dyes poses a significant environmental challenge. This study reports the green synthesis of bimetallic iron/nickel (Fe/Ni) nanoparticles using moringa leaf extract, which acted as both a reducing and capping agent, and their incorporation into polyethersulphone (PES) membranes to produce eco‐friendly ...
Qusay A. Almajras, Ahmed K. Hassan, Dahiru Lawal, Mohammed Awad, Raed A. Al‐Juboori, Muhammad Irfan, Muhammad Rafiq, Qusay F. Alsalhy   +7 more
wiley   +1 more source

Optimization of Sludge Carbon Source Recovery from Waste Activated Sludge Thermo-alkaline Hydrolysis and Short-cut Fermentation Process

Chemical Engineering Transactions, 2017
Organic products generated from waste activated sludge hydrolysis and fermentation process could be used as supplementary carbon source for enhanced biological nutrient removal.
Junjie Li, Ling Wang, Lina Pang
doaj   +1 more source

Observations on changes in ultrasonically treated waste-activated sludge [PDF]

Water Research, 2001
This work experimentally elucidates the effects of ultrasonic treatment on the physical, chemical, and biological characteristics of a waste-activated sludge. A critical ultrasonic power level exists above which, accompanied with the release of divalent cations from the sludge body, the floc structure effectively disintegrated, microbial level ...
Chu, C. P., Chang, Bea-Ven, Liao, G. S., Jean, D. S., Lee, D. J.   +4 more
openaire   +2 more sources

Economic and environmental implications of the development of UASB reactors in Mexico for sustainable industrial wastewater treatment

The Canadian Journal of Chemical Engineering, EarlyView.
Abstract The objective of this work is to demonstrate that the inclusion of an up‐flow anaerobic sludge bed (UASB reactor) within an industrial wastewater treatment plant reduces the plant's investment and operating costs compared to a system based solely on conventional complete‐mix activated sludge (CMAS), operating under the same design principles ...
Juan Manuel Morgan‐Sagastume, Adalberto Noyola   +1 more
wiley   +1 more source

Impact of anaerobic digestion and centrifugation/decanting processes in bacterial communities fractions [PDF]

, 2018
The work upon which this paper is based on was co-financed by COGERSA, S.A.U. (Projects FUO-EM-138-15, FUO-139-16), IDEPA (Project IDE/2015/000245), Spanish MINECO (Project CTM2015-63864-R) and FEDER funds from European Union. Technical assistance from
Collado Alonso, Sergio, Díaz Fernández, José Mario, Díaz González, Ana Isabel, González, J. M., Laca Pérez, Adriana, Oulego Blanco, Paula   +5 more
core   +2 more sources

Natural South African iron‐rich sand as a functional catalyst in hybrid photocatalytic wet peroxide oxidation technology for the degradation of methyl orange dye pollutant

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, Stephen Sunday Emmanuel, Alicia Levana Dorling, Shepherd M. Tichapondwa   +3 more
wiley   +1 more source