Results 121 to 130 of about 71,385 (248)

Comparisons of nonlinear estimators for wastewater treatment plants [PDF]

, 2012
This paper deals with five existing nonlinear estimators (filters), which include Extended Kalman Filter (EKF), Extended H-infinity Filter (EHF), State Dependent Filter (SDF), State Dependent H-Infinity Filter (SDHF) and Unscented Kalman Filter (UKF ...
Abdul Wahab, Hamimi Fadziati Binti, Katebi, Reza, Villanova, Ramon   +2 more
core   +1 more source

Intensification of Activated Sludge Waste Water Treatment

Water Science and Technology, 1986
The efficiency of two possible intensification methods of activated sludge waste water treatment (pure oxygen activation and activated carbon addition) were compared. Experiments were carried out in laboratory scale equipment with variable reactor volume (maximum capacity 20,0 dm3, settling tank vol. 15 dm3).
R. Hajós, J. Káimán, A. Donáth-Jobbágy   +2 more
openaire   +1 more source

Current Knowledge on Phytoremediation Potential of Industrial Hemp (Cannabis sativa L.) for PFAS and Heavy Metal Contaminated Soils

Remediation Journal, Volume 36, Issue 2, Spring 2026.
ABSTRACT This review synthesizes current research on the phytoremediation potential of industrial hemp (Cannabis sativa L.) for heavy metals, including arsenic, aluminium, mercury, copper, lead, cadmium, nickel, and zinc, as well as per‐ and polyfluoroalkyl substances (PFAS), commonly referred to as “forever chemicals.” A structured and transparent ...
Omid Ansari, Luca De Prato
wiley   +1 more source

Development and Research Progress of the ‘Land‐Based Container + Ecological Pond’ Recirculating Aquaculture Model in China

Aquaculture, Fish and Fisheries, Volume 6, Issue 2, April 2026.
This review systematically examines China's Land‐based Container + Ecological Pond (LCEP) recirculating aquaculture model. It synthesizes the system's development, technical principles, and research progress, highlighting its significant resource savings (>75% land, >90% water) and high‐density production capabilities. The analysis critically evaluates
Shoubing Wang, Zijie Song, Xiangyu Pan, Pinhao Liu, Sihan Xu   +4 more
wiley   +1 more source

Granule production from raw waste activated sludge

Water Science and Technology, 1994
Granulation is an important characteristic of sludges used in upflow anaerobic sludge blanket (UASB) reactors. As the UASB technology is rapidly spreading, there is a need of granular sludge for inoculation of new reactors, particularly in those countries where anaerobic technologies have been just recently accepted.
Gloria Moreno, Adalberto Noyola
openaire   +1 more source

Microaeration Process Design, Control, and Monitoring for Biogas Desulfurization in Anaerobic Digestion

ChemBioEng Reviews, Volume 13, Issue 2, April 2026.
This review critically explores how microaeration can enhance biogas desulfurization in anaerobic digestion. It summarizes existing data and provides a comprehensive overview of various microaeration strategies by focusing on both technical and fundamental aspects.
Samiullah Khaskheli, Anqi Mou, Bipro Ranjan Dhar   +2 more
wiley   +1 more source

Effect of Pretreating Waste Activated Sludge with Ozone on the Performance of Aerobic Digestion Process [PDF]

سلامت و محیط, 2009
"n "nBackground and Objectives: A conventional treatment to stabilize the excess activated sludge is the aerobic digestion process but due to long aeration time, it requires large equipments as well as high investment cost.
H Asilian, A Jamal, G moussavi
doaj  

Advancement in Anaerobic Digestion for Scaling‐Up Biogas Production Through Food Waste Valorization

ChemBioEng Reviews, Volume 13, Issue 2, April 2026.
The review article begins with an introduction that covers the overview, food waste (FW) classification, and the steps involved in producing biogas through anaerobic digestion (AD). Following that, it describes the process for producing biogas, including single‐, two‐, and multistage systems, mesophilic and thermophilic digestion, and wet and dry ...
Poulami Chatterjee, Nabanita Saha, Petr Sáha   +2 more
wiley   +1 more source

Concentration of active sludge in the aeration reactors

MATEC Web of Conferences, 2018
The purpose of the paper was to study the dehydrogenase activity (DHA) of activated sludge in aeration tank. The article describes a change in enzyme activity, (dehydrogenase activity of sludge-DHA) of activated sludge while various time of aeration as ...
Zaletova Nina, Morozova Nadezhda
doaj   +1 more source

Review of recent advances in the design, synthesis, and modification of biochar for remediation of heavy metal pollution in water

The Canadian Journal of Chemical Engineering, Volume 104, Issue 4, Page 1769-1795, April 2026.
Research frontiers in using biochar for heavy metal remediation. Abstract Heavy metal contamination of water has long been a serious environmental issue. Biochar and biochar‐based composites are emerging as effective and sustainable solutions for heavy metal removal due to their strong adsorption abilities and environmentally friendly nature.
Soumik Chakma, Mehedi Hasan, Sudip K. Rakshit, Janusz Kozinski, Kang Kang   +4 more
wiley   +1 more source