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Biopolymer Recovery from Aerobic Granular Sludge and Conventional Flocculent Sludge in Treating Industrial Wastewater: Preliminary Analysis of Differ…

2022

The recovery of biopolymers from sewage sludge could be a crucial step in implementing circular economy principles in wastewater treatment plants (WWTP). In this frame, the present study was aimed at evaluating the simultaneous production of polyhydroxyalkanoates (PHA) and extracellular polymeric substances (EPS) obtainable from the treatment of agro-industrial wastewater. Two biological enrichment systems, aerobic granular sludge (AGS) and a conventional activated sludge operating as a sequencing batch reactor (SBR), were monitored for 204 and 186 days, respectively. The maximum biopolymers accumulation capacity was close to 0.60 mgPHA-EPS gVSS−1 in the AGS when operating at 3 kgCODm…

Performance indicators to assess water & wastewater service criticalities and investments efficiency and effectiveness in the Italian regulatory cont…

2017

Natural and anthropogenic impacts on Greek karst water quality

2022

Diallyldimethylammonium Chloride (DADMAC) in Water Treated with Poly-Diallyldimethylammonium Chloride (PDADMAC) by Reversed-Phase Ion-Pair Chromatogr…

2023

Poly-diallyldimethylammonium (PDADMAC) chloride is a flocculant agent extensively used in water clarification treatments. Commercial polyelectrolyte formulations often contain residual monomer (DADMAC), reaction by-products and other reactants as contaminants that could potentially affect human health. In the present study, we optimized an analytical method based on reversed-phase ion-pair chromatography coupled with mass spectrometry for quantifying ultra-trace levels of DADMAC, without preliminary treatments, in drinking water distributed by the Palermo aqueduct. The method was validated in terms of accuracy (recovery between 80 to 120%), precision (RSD < 10%), linearity range (from 0.…

Proceedings of Frontiers International Conference on Wastewater Treatment May 21-14, 2017, Palermo, ITALY

2017

Today multidisciplinary is a key and a must for solving issues in the water field. The works in several International Water Association Specialist Groups have demonstrated the importance of both innovative technologies and mathematical modelling, and that the exchange of scientific and technical information among researchers and practitioners involved in these fields is crucial for effectively advancing knowledge.

Atmospheric circulation modulates the spatial variability of temperature in the Atlantic-Arctic region

2019

International audience; The Arctic region has experienced significant warming during the past two decades with major implications on the cryosphere. The causes of Arctic amplification are still an open question within the scientific community, attracting recent interest. The goal of this study is to quantify the contribution of atmospheric circulation on temperature variability in the Atlantic–Arctic region at decadal to intra‐annual timescales from 1951 to 2014. Daily 20th Century reanalyses geopotential height anomalies at 500 hPa were clustered into different weather regimes to assess their contribution to observed temperature variability. The results show that in winter, 25% of the warm…

Skuteczność wentylacji grawitacyjnej w budownictwie mieszkaniowym

2013

Skuteczność systemu wentylacji jest znaczącym problemem w budownictwie mieszkaniowym.W pracy przedstawiono wyniki badań systemu wentylacji grawitacyjnej w lokalach mieszkalnych poddanych termomodernizacji. Badania przeprowadzono w lokalu mieszkalnym o powierzchni 60 m2 znajdującym się w budynku wielorodzinnym w Opolu. Badania prowadzono zarówno przed jak i po prowadzonej termomodernizacji mieszkania. Badania wykazały iż wentylacja grawitacyjna nie spełnia wymaganych w normach parametrów wymiany powietrza. Stwierdzono również zmniejszenie skuteczności wentylacji grawitacyjnej po przeprowadzeniu prac termomodernizacyjnych.

Lagrangian matches between observations from aircraft, lidar and radar in a warm conveyor belt crossing orography

2021

Warm conveyor belts (WCBs) are important airstreams in extratropical cyclones, often leading to the formation of intense precipitation and the amplification of upper-level ridges. This study presents a case study that involves aircraft, lidar and radar observations in a WCB ascending from western Europe towards the Baltic Sea during the Hydrological Cycle in the Mediterranean Experiment (HyMeX) and T-NAWDEX-Falcon in October 2012, a preparatory campaign for the THORPEX North Atlantic Waveguide and Downstream Impact Experiment (TNAWDEX). Trajectories were used to link different observations along the WCB, that is, to establish so-called Lagrangian matches between observations. To this aim, a…

Futile Therapy versus Worthy Dying: Anthropological and Ethical Arguments

2020

Nowadays, issues related to the final stages of life stand more and more at the centre of problems relating to life and health, which result, for example, from the demographic situation in highly developed societies. In the last decades of the twentieth century, an explosion of therapeutic possibilities in the field of technical medicine has caused such questions to be voiced more and more frequently: Should humans try to live as long as possible, or should they live as long as they can with dignity and then die with dignity? Despite the seemingly obvious answer, there is still considerable medical and social resistance to the policy of discontinuing futile therapy. There are probably many …

Work commitment and engagement in south Italian volunteers

2009

Objectives. Recent research on volunteering has increased its interest in integrating different theoretical models such as motivational and socio-psychological ones. The current research replicates and extends a Swiss survey (Guntert, 2008) among a sample of Italian volunteers. The aim was to examine the antecedents (mainly in terms of motivational factors and identification) of outcomes such as commitment and engagement towards volunteering. Methods. To examine these antecedents and the outcomes, a questionnaire was administered to a sample of 165 young Italian adults who were engaged in various voluntary associations in south Italy (Campania and Sicilia). Results. Our analyses, underlinin…