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The sludge dewaterability is essential for waste activated sludge (WAS) treatment and disposal in wastewater treatment plants (WWTPs). The biological enzyme conditioning process is a promising method to enhance the dewaterability of WAS. In this study, the optimal conditions in terms of pH, temperature, bio-enzyme dosage, and treatment time for five kinds of biological enzymes (α-amylase, cellulase, acidic protease, neutral protease, and alkaline protease) were investigated. Among them, α-amylase and neutral protease showed good performance in conditional optimization experiments. After biol...

Integrated steelplants produce a range of byproducts. An increased focus on sustainability and a global drive to develop a circular economy has shifted focus from byproducts that can be reused without significant operational impact to byproducts that have physical or chemical characteristics that complicate reuse. A case study of byproduct reuse was undertaken using an existing integrated SP and BF model that included ten trace elements considered critical for the assessment of byproduct reuse: As, Cd, Cu, Hg, Ni, Pb, Ti, V, Se, and Zn. The case study presents work undertaken to optimize the u...

Recent studies have shown that computed tomography (CT) scan images can characterize COVID-19 disease in patients. Several deep learning (DL) methods have been proposed for diagnosis in the literature, including convolutional neural networks (CNN). But, with inefficient patient classification models, the number of ‘False Negatives’ can put lives at risk. The primary objective is to improve the model so that it does not reveal ‘Covid’ as ‘Non-Covid’. This study uses Dense-CNN to categorize patients efficiently. A novel loss function based on cross-entropy has also been used to impro...

The conventional protection schemes may lead towards the inadvertent operation of the protection devices with the increased penetration of renewable energy sources based distributed generation (RES-DG) in distribution networks (DN). The miscoordination and the malfunctioning of directional overcurrent relays (DOCR) may occur due to significant change in the fault current level (FCL) and the change in the network topology form the radial to ring topology caused by the RES-DG. Optimization algorithms (OA) and modification in relay characteristics were mostly used to tackle the DOCR miscoordinati...

Euronav formalized its proposal for a way forward to stabilize the feud between John Fredriksen and the Saverys family by providing both with represen...