Results 31 to 40 of about 16,513 (257)

Influence of HRT (hydraulic retention time) and SRT (solid retention time) on the hydrolytic pre-treatment of urban wastewater

Water Science and Technology, 2001
This work presents the results obtained from a study on the pretreatment of urban wastewater using a digester that acted as a system for the retention of solids (sedimentation-filtration), hydrolysis of the retained solids and acidification of the dissolved substances.
P, Ligero, A, de Vega, M, Soto
openaire   +2 more sources

EFFECT OF ORGANIC LOAD AND ALKALINITY ON DAIRY WASTEWATER BIOMETHANATION [PDF]

Engenharia Agrícola, 2017
: This study aimed to evaluate the effect of variations in organic load (hydraulic retention times - HRTs: from 2 to 0.5 day) and in alkalinity (NaHCO3 from 4,000 to 1,000 mg.L−1) on methane production.
Eduardo M. Kispergher, Camila A. D'Aquino, Luis C. da Costa Junior, Thiago C. de Mello, Regina Weinschutz, Alvaro L. Mathias   +5 more
doaj   +1 more source

Comparison of different estimation procedures for the hydraulic properties of horticultural substrates by One-Step technique

Journal of Agricultural Engineering, 2013
The improved iterative method for the simultaneous determination of the hydraulic properties of growing media from One-Step experiment by Bibbiani, is performed and compared with simplified equations by Valiantzas and Londra.
Carlo Bibbiani, Carlo A. Campiotti, Luca Incrocci, Alberto Pardossi   +3 more
doaj   +1 more source

Hydrodynamics of hybrid upflow anaerobic sludge blanket reactors using tracer studies

Environmental Challenges, 2021
The hybrid upflow anaerobic sludge blanket reactor (HUASB) is a modified UASB wherein, inert media variants are used to prevent the biomass washout and its circular shape reduces biological and hydraulic dead zone.
Bina Birenkumar Patel, Dr. Pradipkumar J. Gundaliya, Dr. Upendra D. Patel, Dr. Umeshkumar Khare   +3 more
doaj   +1 more source

Influence of hydraulic retention time on UASB post-treatment with UF membranes

Water Science and Technology, 2011
A pilot UASB reactor coupled with an external ultrafiltration (UF) membrane was operated under three different hydraulic retention times (HRT) for domestic wastewater treatment. The aim was to assess the HRT influence on system performance and fouling. The highest concentrations of COD, total solids, extracellular polymeric substances (EPS) and soluble
M L, Salazar-Peláez, J M, Morgan-Sagastume, A, Noyola   +2 more
openaire   +2 more sources

Prediction of effluent COD concentration of UASB reactor using kinetic models of monod, contois, second-order Grau and modified stover-kincannon

International Journal of Environmental Health Engineering, 2013
Aims: The aim of this study is predicting the effluent COD of UASB reactors with flowing mathematical models. Materials and Methods: Weak industrial wastewater of the township, after passing screening unit, grit removal chamber and equalization tank ...
Seyyed Mehran Abtahi, Mohammad Mehdi Amin, Roya Nateghi, Ali Vosoogh, Mehdi Gholizadeh Dooranmahalleh   +4 more
doaj   +1 more source

Morphology, Transport, and Dynamics of Protein Adsorption in Open‐Cell Metal Foam

Advanced Engineering Materials, EarlyView.
Stainless steel (SS) open‐cell foams are shown to adsorb more protein per unit area than previously reported 316L SS and chromium oxide surfaces under static and flow conditions. An integrated approach combining 3D pore imaging, flow simulation, and protein adsorption experiments characterizes the foam’s performance.
Chinmaya Prerana Inguva, Joseph Lavoie, Afsaneh Rabiei   +2 more
wiley   +1 more source

Numerical modeling of perfluoroalkyl and polyfluoroalkyl substances transport and retention in river-groundwater interaction zone

Shuiwen dizhi gongcheng dizhi
Perfluoroalkyl and polyfluoroalkyl substances (PFAS), as emerging contaminants, pose a serious threat to aquatic environments due to their environmental persistence and biological toxicity.
Shiying XU, Yueqing XIE, Yucheng QIANG, Yuanyuan SUN, Rongbing FU, Jichun WU   +5 more
doaj   +1 more source

Advances in Sustainable and Wearable Textile Based Soft Robotics

Advanced Functional Materials, EarlyView.
This Review examines advances in wearable textile‐based soft robotics, focusing on sustainable materials, integrated sensing, and scalable actuation. It discusses manufacturing and system integration across healthcare, assistive robotics, prosthetics, and human–machine interfaces, and highlights key challenges in circular design, including life‐cycle ...
Zahir Abbas, Marzia Dulal, Sophia K. Novoselov, Victoria K. Novoselov, Kostya S. Novoselov, Shaila Afroj, Nazmul Karim   +6 more
wiley   +1 more source

Electrospun Wood‐Derived Biopolymers as Electrodes in Electrochemical Energy Storage Technologies

Advanced Functional Materials, EarlyView.
Electrospinning transforms wood‐derived cellulose and lignin into architecturally defined, binder‐free carbon electrodes with tuneable porosity and functionality. This review shows how fibre design enables decoupled charge and mass transport, enhancing performance across battery systems, while identifying key challenges in spinnability, scalability ...
Michael W. Thielke, Hattie R. Chisnall, Jesus Vazquez Chavez, Ana B. Jorge Sobrido   +3 more
wiley   +1 more source