We report reaction cross sections, energy disposal, and rate constants for the OH + HBr → Br + H2O and OH + DBr → Br + HDO reactions from quasiclassical trajectory calculations using an ab initio potential energy surface [ de Oliveira-Filho , A. G. S. ; Ornellas , F. R. ; Bowman , J. M. J. Phys. Chem. Lett. 2014 , 5 , 706 - 712 ]. Comparison with available experiments are made and generally show good agreement.
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http://dx.doi.org/10.1021/jp509430p | DOI Listing |
Water Sci Technol
December 2024
Kompetenzzentrum Wasser Berlin gGmbH, Grunewaldstr. 61-62, Berlin 10825, Germany.
The use of activated sludge models (ASMs) is a common way in the field of wastewater engineering in terms of plant design, development, optimization, and testing of stand-alone treatment plants. The focus of this study was the development of a joint control system (JCS) for a municipal wastewater treatment plant (mWWTP) and an upstream industrial wastewater treatment plant (iWWTP) to create synergies for saving aeration energy. Therefore, an ASM3 + BioP model of the mWWTP was developed to test different scenarios and to find the best set-points for the novel JCS.
View Article and Find Full Text PDFWater Sci Technol
December 2024
Water Research Commission, Lynnwood Bridge Office Park, 2nd Floor, Bloukrans Building, 4 Daventry Street, Lynnwood Manor, Pretoria 0081, South Africa; Water Utilisation and Environmental Engineering Division, Department of Chemical Engineering, University of Pretoria, Pretoria 0002, South Africa E-mail:
The management of municipal wastewater sludge is a significant challenge for wastewater management, particularly the need to manage and dispose of the sludge in an environmentally friendly and sustainable manner. The emergence of stricter regulations regarding landfill disposal of wastewater sludge necessitates the need for alternative options for municipal wastewater sludge management, with thermochemical technologies potentially contributing towards achieving carbon neutrality goals and fostering sustainable development. This study sought to address these challenges through a technical and financial evaluation of a pilot-scale emerging thermochemical technology, the enhanced hydrothermal polymerization to provide adequate understanding of the technology's feasibility regarding its application for municipal wastewater sludge volarization into a multi-use hydrochar.
View Article and Find Full Text PDFJ Hazard Mater
December 2024
State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China.
Global concern over per- and polyfluoroalkyl substances (PFASs), especially perfluorooctane sulfonate (PFOS), disposal prompts the search for effective degradation methods. Subcritical water hydrothermal treatment shows promise but suffers from unclear degradation pathways, hindering engineering application design due to unknown intermediate products. This study introduces Fe-based amorphous alloy to enhance the subcritical water hydrothermal degradation of PFOS, achieving a degradation rate of approximately 85 % under optimized conditions of 325 °C and 1 M sodium bicarbonate (NaHCO₃), compared to 56 % without the alloy.
View Article and Find Full Text PDFJ Vitreoretin Dis
December 2024
Retina Consultants of Minnesota, Minneapolis, MN, USA.
To understand the environmental burden associated with intravitreal injections (IVIs) and propose actionable solutions to mitigate this impact. An analysis of current IVI practices was conducted, focusing on packaging waste, energy consumption, the carbon footprint, and disposal processes. Data on the environmental footprint of IVIs were collected from the literature and industry reports.
View Article and Find Full Text PDFEnviron Sci Pollut Res Int
December 2024
Biochemical Conversion Division, Sardar Swaran Singh National Institute of Bio-Energy, Kapurthala, Punjab, 144 603, India.
The disposal of municipal solid waste (MSW) in urban areas is a big issue nowadays in most of the countries. Developing countries like India are struggling with the continuous indiscriminate disposal of MSW due to rapid increase in the urbanization, industrialization, and human population growth. The mismanagement of MSW causes adverse environmental impacts, public health risks, and other socio-economic problems.
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