This page has only limited features, please log in for full access.

Dr. Riccardo Campo
Dipartimento di Ingegneria Civile e Ambientale - DICEA, Università degli Studi di Firenze, 50139 Firenze, Italy

Basic Info

Basic Info is private.

Research Keywords & Expertise

0 Wastewater Treatment
0 Industrial wastewater treatment
0 Aerobic granular sludge technology
0 Extracellular polymeric substances (EPS)
0 Resources recovery from waste sludge

Fingerprints

Aerobic granular sludge technology
Wastewater Treatment
Extracellular polymeric substances (EPS)

Honors and Awards

The user has no records in this section


Career Timeline

The user has no records in this section.


Short Biography

The user biography is not available.
Following
Followers
Co Authors
The list of users this user is following is empty.
Following: 0 users

Feed

Journal article
Published: 10 May 2021 in Journal of Water Process Engineering
Reads 0
Downloads 0

This work reports on reactivation of aerobic granular sludge (AGS) for the treatment of industrial recalcitrant wastewater (slop wastewater) characterized by high salinity and hydrocarbons. AGS were reactivated in two reactors, R1 and R2, to treat industrial slop wastewater after a long-term storage for 12-months at 4 °C. In R1, salt-adapted mature aerobic granules were previously subjected to a step-wise increase of hydrocarbons, whereas in R2 aerobic granules were previously cultivated in presence of salinity and hydrocarbons. After a short-term reactivation period, the slop dosage caused a simultaneous decrease of granules dimensions and proteins/polysaccharides (PN/PS) ratio down to 1.76 (R1) and 2.35 (R2). Then, the increase of granules dimensions and of the PN/PS ratio up to 5.63 (R1) and 4.22 (R2), suggested a new granulation process. The difference in total petroleum hydrocarbons (TPHs) removal efficiencies (≈87 % R1, and ≈97 % R2) was mainly due to a biodegradation effect in R2 where granules were previously cultivated with slop. This was confirmed by a simultaneous decrease of TPHs concentration in the bulk and adsorbed into granules. Based on Next Generation Sequencing of metagenomic 16S encoding genes, in R2 typical oil-polluted seawater-associated bacteria were detected, which probably played key roles in TPHs biodegradation.

ACS Style

Riccardo Campo; Alberto Vassallo; Graziella Rabbeni; Walter Arancio; Giuseppe Gallo; Gaetano Di Bella. Reactivation of aerobic granular sludge for the treatment of industrial shipboard slop wastewater: Effects of long-term storage on granules structure, biofilm activity and microbial community. Journal of Water Process Engineering 2021, 42, 102101 .

AMA Style

Riccardo Campo, Alberto Vassallo, Graziella Rabbeni, Walter Arancio, Giuseppe Gallo, Gaetano Di Bella. Reactivation of aerobic granular sludge for the treatment of industrial shipboard slop wastewater: Effects of long-term storage on granules structure, biofilm activity and microbial community. Journal of Water Process Engineering. 2021; 42 ():102101.

Chicago/Turabian Style

Riccardo Campo; Alberto Vassallo; Graziella Rabbeni; Walter Arancio; Giuseppe Gallo; Gaetano Di Bella. 2021. "Reactivation of aerobic granular sludge for the treatment of industrial shipboard slop wastewater: Effects of long-term storage on granules structure, biofilm activity and microbial community." Journal of Water Process Engineering 42, no. : 102101.

Review
Published: 04 April 2021 in Membranes
Reads 0
Downloads 0

This mini-review reports the effect of aerobic granular sludge (AGS) on performance and membrane-fouling in combined aerobic granular sludge–membrane bioreactor (AGS–MBR) systems. Membrane-fouling represents a major drawback hampering the wider application of membrane bioreactor (MBR) technology. Fouling can be mitigated by applying aerobic granular sludge technology, a novel kind of biofilm technology characterized by high settleability, strong microbial structure, high resilience to toxic/recalcitrant compounds of industrial wastewater, and the possibility to simultaneously remove organic matter and nutrients. Different schemes can be foreseen for the AGS–MBR process. However, an updated literature review reveals that in the AGS–MBR process, granule breakage represents a critical problem in all configurations, which often causes an increase of pore-blocking. Therefore, to date, the objective of research in this sector has been to develop a stable AGS–MBR through multiple operational strategies, including the cultivation of AGS directly in an AGS–MBR reactor, the occurrence of an anaerobic-feast/aerobic-famine regime in continuous-flow reactors, maintenance of average granule dimensions far from critical values, and proper management of AGS scouring, which has been recently recognized as a crucial factor in membrane-fouling mitigation.

ACS Style

Riccardo Campo; Claudio Lubello; Tommaso Lotti; Gaetano Di Bella. Aerobic Granular Sludge–Membrane BioReactor (AGS–MBR) as a Novel Configuration for Wastewater Treatment and Fouling Mitigation: A Mini-Review. Membranes 2021, 11, 261 .

AMA Style

Riccardo Campo, Claudio Lubello, Tommaso Lotti, Gaetano Di Bella. Aerobic Granular Sludge–Membrane BioReactor (AGS–MBR) as a Novel Configuration for Wastewater Treatment and Fouling Mitigation: A Mini-Review. Membranes. 2021; 11 (4):261.

Chicago/Turabian Style

Riccardo Campo; Claudio Lubello; Tommaso Lotti; Gaetano Di Bella. 2021. "Aerobic Granular Sludge–Membrane BioReactor (AGS–MBR) as a Novel Configuration for Wastewater Treatment and Fouling Mitigation: A Mini-Review." Membranes 11, no. 4: 261.

Journal article
Published: 07 February 2020 in Bioresource Technology
Reads 0
Downloads 0

This work reports on simultaneous nitrification, denitrification and phosphorus removal treating real domestic wastewater with low carbon/nitrogen (C/N) ratio by aerobic granular sludge (AGS). Operations at high sludge retention time (SRT = 61 ± 24 days) resulted in low biomass yield per chemical oxygen demand removed (CODrem) (0.21 ± 0.01 gCODx/gCODrem), lower COD demand for denitrification as well as high effluent quality in terms of total suspended solids (TSS) (22 ± 7 mgTSS/L). The average ratio between the biodegradable soluble COD stored anaerobically as polyhydroxyalkanoates (PHAs) and the N removed was 3.1 ± 0.6 gCODsto/gNrem, suggesting that nitrification/denitrification occurred partly via the nitrite pathway. Results revealed that stable AGS process with high C/N/P removal efficiency of 84/71/96% can be obtained besides a low organic loading rate (0.43 ± 0.11 g COD/L/d) and influent C/N ratio (3.8 ± 1.6 g/g), resulting in a high effluent quality characterized by 25 ± 6 mg sCOD/L, 0.09 ± 0.07 mgPO4-P/L, 9 ± 2 mgTIN/L (10 ± 2 mgTN/L) and 22 ± 7 mgTSS/L.

ACS Style

Riccardo Campo; Sara Sguanci; Simone Caffaz; Lorenzo Mazzoli; Matteo Ramazzotti; Claudio Lubello; Tommaso Lotti. Efficient carbon, nitrogen and phosphorus removal from low C/N real domestic wastewater with aerobic granular sludge. Bioresource Technology 2020, 305, 122961 .

AMA Style

Riccardo Campo, Sara Sguanci, Simone Caffaz, Lorenzo Mazzoli, Matteo Ramazzotti, Claudio Lubello, Tommaso Lotti. Efficient carbon, nitrogen and phosphorus removal from low C/N real domestic wastewater with aerobic granular sludge. Bioresource Technology. 2020; 305 ():122961.

Chicago/Turabian Style

Riccardo Campo; Sara Sguanci; Simone Caffaz; Lorenzo Mazzoli; Matteo Ramazzotti; Claudio Lubello; Tommaso Lotti. 2020. "Efficient carbon, nitrogen and phosphorus removal from low C/N real domestic wastewater with aerobic granular sludge." Bioresource Technology 305, no. : 122961.

Journal article
Published: 22 January 2020 in Journal of Water Process Engineering
Reads 0
Downloads 0

This study analyzes the outcomes obtained with the treatment of coagulation-flocculation applied to industrial wastewater coming from an oil tanker. Characteristics of this wastewater are high salinity and the presence of recalcitrant pollutants predominantly of hydrocarbon origin. Therefore, the application of a chemical-physical treatment is preferred rather than biological treatment, since the simultaneous effect of salinity and hydrocarbons plays an inhibitory role in biomass growth. In coagulation-flocculation process, the first phase of coagulation aims at electrical destabilization of pollutants particles, whereas the flocculation phase allows destabilized particles to aggregate and form flakes which, then, the last phase of the process removes from effluent by sedimentation or flotation. The novelty of this experimentation consists in the optimization of the continuous wastewater treatment with advantages both economic and in terms of treatment flexibility. The observation of the continuous process has highlighted the need for a deflector element in the passage section from the flocculation to the sedimentation compartment, to guarantee the establishment of the calm conditions necessary to allow sedimentation inside the last compartment. Results’ analysis has shown that the process allows high removal efficiencies of the main pollutants analyzed in this study. In particular, the removal efficiency of TSS always stood at values greater than 90 %, while the removal efficiency of TPH was even almost close to 100 %. Instead, the removal of the organic substance in terms of COD and TOC has achieved lower performances. Therefore, in the outlet wastewater the levels of the contaminants were usually lower than the limits imposed by law to allow the discharge into the receiving water body (sea). The best test was the one in which the slop fed to the system of coagulation-flocculation was previously subjected to a treatment in which the oil was removed. Furthermore, the presence of the deflector element favors the sludge settling and therefore the removal of pollutants from the clarified.

ACS Style

P. Bruno; Riccardo Campo; M.G. Giustra; M. De Marchis; G. Di Bella. Bench scale continuous coagulation-flocculation of saline industrial wastewater contaminated by hydrocarbons. Journal of Water Process Engineering 2020, 34, 101156 .

AMA Style

P. Bruno, Riccardo Campo, M.G. Giustra, M. De Marchis, G. Di Bella. Bench scale continuous coagulation-flocculation of saline industrial wastewater contaminated by hydrocarbons. Journal of Water Process Engineering. 2020; 34 ():101156.

Chicago/Turabian Style

P. Bruno; Riccardo Campo; M.G. Giustra; M. De Marchis; G. Di Bella. 2020. "Bench scale continuous coagulation-flocculation of saline industrial wastewater contaminated by hydrocarbons." Journal of Water Process Engineering 34, no. : 101156.

Journal article
Published: 25 June 2019 in Chemical Engineering Journal
Reads 0
Downloads 0

The aim of this work is to study the mechanism for hydrocarbons removal from slop wastewater by means of aerobic granular sludge technology (AGS). Two sequencing batch reactors (SBRs), R1 and R2, worked for 150 days according to two different strategies: (i) slop treatment with mature salt-adapted granules (R1); (ii) cultivation of AGS with slop wastewater for its treatment (R2). Results revealed that, despite the similar physical properties of AGS at the end of experimental period (4.4–4.8 gTSS·L−1 and 2.2–2.5 gVSS·L−1, and mean dimensions of 1.15 mm and 1 mm, for R1 and R2 respectively), in R2 granules highlighted better total petroleum hydrocarbons (TPHs) removal efficiencies than R1 (83% vs 36%), when real slop was fed to the reactors. The direct cultivation of AGS with slop (R2) prompted a higher extracellular polymeric substances (EPSs) production that enhanced the bio-adsorption of TPH, thus favouring the adaptation of bacteria to hydrocarbons.

ACS Style

R. Campo; G. Di Bella. Petrochemical slop wastewater treatment by means of aerobic granular sludge: effect of granulation process on bio-adsorption and hydrocarbons removal. Chemical Engineering Journal 2019, 378, 122083 .

AMA Style

R. Campo, G. Di Bella. Petrochemical slop wastewater treatment by means of aerobic granular sludge: effect of granulation process on bio-adsorption and hydrocarbons removal. Chemical Engineering Journal. 2019; 378 ():122083.

Chicago/Turabian Style

R. Campo; G. Di Bella. 2019. "Petrochemical slop wastewater treatment by means of aerobic granular sludge: effect of granulation process on bio-adsorption and hydrocarbons removal." Chemical Engineering Journal 378, no. : 122083.

Journal article
Published: 21 March 2019 in Chemosphere
Reads 0
Downloads 0

The development and stability of aerobic granular sludge (AGS) was studied in two Sequencing Batch Reactors (SBRs) treating fish canning wastewater. R1 cycle comprised a fully aerobic reaction phase, while R2 cycle included a plug-flow anaerobic feeding/reaction followed by an aerobic reaction phase. The performance of the AGS reactors was compared treating the same effluents with variable salt concentrations (4.97–13.45 g NaCl/L) and organic loading rates (OLR, 1.80–6.65 kg CODs/(m3·d)). Granulation process was faster in R2 (day 34) than in R1 (day 90), however the granular biomass formed in the fully aerobic configuration was more stable to the variable feeding composition. Thus, in R1 solid retention times (SRT), up to 15.2 days, longer than in R2, up to 5.8 days, were achieved. These long SRTs values helped the retention of nitrifying organisms and provoked the increase of the nitrogen removal efficiency to 80% in R1 while it was approximately of 40% in R2. However, the presence of an anaerobic feeding/reaction phase increased the organic matter removal efficiency in R2 (80–90%) which was higher than in R1 with a fully aerobic phase (75–85%). Furthermore, in R2 glycogen-accumulating organisms (GAOs) dominated inside the granules instead of phosphorous-accumulating organisms (PAOs), suggesting that GAOs resist better the stressful conditions of a variable and high-saline influent. In terms of AGS properties an anaerobic feeding/reaction phase is not beneficial, however it enables the production of a better quality effluent.

ACS Style

P. Carrera; R. Campo; R. Méndez; G. Di Bella; J.L. Campos; A. Mosquera-Corral; A. Val del Rio. Does the feeding strategy enhance the aerobic granular sludge stability treating saline effluents? Chemosphere 2019, 226, 865 -873.

AMA Style

P. Carrera, R. Campo, R. Méndez, G. Di Bella, J.L. Campos, A. Mosquera-Corral, A. Val del Rio. Does the feeding strategy enhance the aerobic granular sludge stability treating saline effluents? Chemosphere. 2019; 226 ():865-873.

Chicago/Turabian Style

P. Carrera; R. Campo; R. Méndez; G. Di Bella; J.L. Campos; A. Mosquera-Corral; A. Val del Rio. 2019. "Does the feeding strategy enhance the aerobic granular sludge stability treating saline effluents?" Chemosphere 226, no. : 865-873.

Journal article
Published: 01 April 2018 in Separation and Purification Technology
Reads 0
Downloads 0
ACS Style

Riccardo Campo; Santo Fabio Corsino; Michele Torregrossa; Gaetano Di Bella. The role of extracellular polymeric substances on aerobic granulation with stepwise increase of salinity. Separation and Purification Technology 2018, 195, 12 -20.

AMA Style

Riccardo Campo, Santo Fabio Corsino, Michele Torregrossa, Gaetano Di Bella. The role of extracellular polymeric substances on aerobic granulation with stepwise increase of salinity. Separation and Purification Technology. 2018; 195 ():12-20.

Chicago/Turabian Style

Riccardo Campo; Santo Fabio Corsino; Michele Torregrossa; Gaetano Di Bella. 2018. "The role of extracellular polymeric substances on aerobic granulation with stepwise increase of salinity." Separation and Purification Technology 195, no. : 12-20.

Journal article
Published: 01 February 2018 in Process Biochemistry
Reads 0
Downloads 0
ACS Style

Santo Fabio Corsino; Riccardo Campo; Gaetano Di Bella; Michele Torregrossa; Gaspare Viviani. Aerobic granular sludge treating shipboard slop: Analysis of total petroleum hydrocarbons loading rates on performances and stability. Process Biochemistry 2018, 65, 164 -171.

AMA Style

Santo Fabio Corsino, Riccardo Campo, Gaetano Di Bella, Michele Torregrossa, Gaspare Viviani. Aerobic granular sludge treating shipboard slop: Analysis of total petroleum hydrocarbons loading rates on performances and stability. Process Biochemistry. 2018; 65 ():164-171.

Chicago/Turabian Style

Santo Fabio Corsino; Riccardo Campo; Gaetano Di Bella; Michele Torregrossa; Gaspare Viviani. 2018. "Aerobic granular sludge treating shipboard slop: Analysis of total petroleum hydrocarbons loading rates on performances and stability." Process Biochemistry 65, no. : 164-171.

Journal article
Published: 01 September 2017 in Journal of Environmental Engineering
Reads 0
Downloads 0
ACS Style

Riccardo Campo; Shibam Mitra; Gaetano Di Bella. Analysis of Extracellular Polymeric Substances and Membrane Fouling of a MB-MBR Treating Shipboard Slops. Journal of Environmental Engineering 2017, 143, 04017063 .

AMA Style

Riccardo Campo, Shibam Mitra, Gaetano Di Bella. Analysis of Extracellular Polymeric Substances and Membrane Fouling of a MB-MBR Treating Shipboard Slops. Journal of Environmental Engineering. 2017; 143 (9):04017063.

Chicago/Turabian Style

Riccardo Campo; Shibam Mitra; Gaetano Di Bella. 2017. "Analysis of Extracellular Polymeric Substances and Membrane Fouling of a MB-MBR Treating Shipboard Slops." Journal of Environmental Engineering 143, no. 9: 04017063.

Article
Published: 04 August 2017 in Water
Reads 0
Downloads 0

Shipboard slop wastewaters are produced by the activity of washing of oil tankers with seawater, and are characterized by high salinity and hydrocarbons. In this context, harbor authorities are forced to respect the international regulation IMO-MARPOL 73/78 and they must treat slop wastewater before discharging to the sea. This study compared data from three stand-alone treatments working with the same real slop wastewater: (1) a chemical treatment of coagulation-flocculation with aluminum sulphate as coagulant and an anionic flocculant (A57), (2) a physical treatment of adsorption on granular activated carbon (GAC), (3) two biological treatments represented by a membrane bioreactor (MBR) and a moving bed biofilm reactor (MB-MBR). GAC treatment registered the highest removal efficiency of total petroleum hydrocarbons (ηTPH) next to 85%, since the activated carbon had excellent adsorption properties towards organic substances. The coagulation-flocculation treatment reported the lowest ηTPH ≈ 57% due to the presence of emulsified hydrocarbons that were not affected by the coagulant and flocculant action, so remaining in liquid phase. ηTPH ≈ 70% obtained with MB-MBR fed with 100% volume of slop, suggested biomass acclimation to salinity and hydrocarbons. Based on the results of each process, three main treatment chains are proposed depending on the hydrocarbons load of the real slop wastewater.

ACS Style

Riccardo Campo; Maria Gabriella Giustra; Gabriele Freni; Mauro De Marchis; Gaetano Di Bella. Characterization and Treatment Proposals of Shipboard Slop Wastewater Contaminated by Hydrocarbons. Water 2017, 9, 581 .

AMA Style

Riccardo Campo, Maria Gabriella Giustra, Gabriele Freni, Mauro De Marchis, Gaetano Di Bella. Characterization and Treatment Proposals of Shipboard Slop Wastewater Contaminated by Hydrocarbons. Water. 2017; 9 (8):581.

Chicago/Turabian Style

Riccardo Campo; Maria Gabriella Giustra; Gabriele Freni; Mauro De Marchis; Gaetano Di Bella. 2017. "Characterization and Treatment Proposals of Shipboard Slop Wastewater Contaminated by Hydrocarbons." Water 9, no. 8: 581.

Conference paper
Published: 05 May 2017 in Proceedings of EECE 2020
Reads 0
Downloads 0

This research work analyses the development of aerobic granular sludge to simultaneously remove organic matter (COD), nitrogen (N) and phosphorous (P), from saline fish-canning wastewater. A 1.6 L sequencing batch reactor (SBR) with volumetric exchange ratio (VER) of 50% and a hydraulic retention time (HRT) of 0.25 d, was used. The SBR was operated in 3-hours cycles comprising: 60 min anaerobic feeding, 112 min aeration, 7–1 min settling and 1–7 min effluent discharge. The salt concentration was approximately 10.4 ± 0.8 g NaCl/L, and the applied organic loading rate (OLR) of 5.4 ± 1.9 kg COD/(m3∙d). Under these working conditions, aerobic granules were observed after 34 days of operation, although some filamentous bacteria were present on the surface of the aggregates. The granular biomass had a concentration of volatile suspended solids (VSS) of 1.34 g VSS/L, a mean diameter of 1.35 mm and a density next to 11.5 g VSS/Lgranule. However, after 41 days of operation a fluffy-flocculent suspension was formed, together with granules, probably due to the salinity and the fraction of slowly biodegradable COD of the feeding (≈ 35% of total COD). Good removal efficiencies of soluble COD were observed (≈ 80%), while ammonium and phosphorous were mainly removed to cover the minimum metabolic demand of heterotrophic strains. In fact, the enrichment of the biomass with slow growing autotrophic and phosphorous accumulating bacteria, especially in a saline environment, require a longer time of operation.

ACS Style

Riccardo Campo; P. Carrera-Fernández; G. Di Bella; A. Mosquera-Corral; A. Val Del Río. Fish-Canning Wastewater Treatment by Means of Aerobic Granular Sludge for C, N and P Removal. Proceedings of EECE 2020 2017, 4, 530 -535.

AMA Style

Riccardo Campo, P. Carrera-Fernández, G. Di Bella, A. Mosquera-Corral, A. Val Del Río. Fish-Canning Wastewater Treatment by Means of Aerobic Granular Sludge for C, N and P Removal. Proceedings of EECE 2020. 2017; 4 ():530-535.

Chicago/Turabian Style

Riccardo Campo; P. Carrera-Fernández; G. Di Bella; A. Mosquera-Corral; A. Val Del Río. 2017. "Fish-Canning Wastewater Treatment by Means of Aerobic Granular Sludge for C, N and P Removal." Proceedings of EECE 2020 4, no. : 530-535.

Conference paper
Published: 05 May 2017 in Proceedings of EECE 2020
Reads 0
Downloads 0

This study investigates the possibility to achieve aerobic granulation for the treatment of saline shipboard slop wastewater to remove hydrocarbons. Two sequencing batch reactors (SBR) with a working volume of 3.5 L, were used. In the first reactor (R1), granules were previously cultivated with a stepwise increase of salinity and, subsequently, they were gradually adapted to hydrocarbons. In the second reactor (R2), granules were simultaneously adapted to a gradual increase of salinity and hydrocarbons. Both the reactors were operated with an organic loading rate (OLR) of 1.6 KgCOD∙m−3·d−1, by setting a 6-hours cycle. The volumetric exchange ratio (VER) was fixed at 50% and the hydraulic retention time (HRT) was kept at 0.5 days. Five parallel phases of 30 days-duration were studied. When only slop was fed to reactor, in R1 the total suspended solids (TSS) and granules dimension decreased till about 4.7 g∙L−1 and 1.25 mm respectively, probably due to a metabolic inhibition and a breakage of granules. In R2 the TSS concentration stabilized on a value next to 4.4 g∙L−1 and no degranulation was observed (mean diameter ≈ 1 mm), probable due to a biological adaptation and a biodegradation of the adsorbed recalcitrant fraction. In R1, the reduction of total petroleum hydrocarbons (TPH) in liquid phase and the increase of TPH on granules, confirmed that a physical bioadsorption effect was dominant. In R2 a decreasing trend of TPH bioadsorbed on granules, together with a contextual depletion in liquid phase, suggested a probable occurrence of hydrolysis and biodegradation of the bioadsorbed hydrocarbons.

ACS Style

Riccardo Campo; G. Di Bella. Shipboard Slop Treatment by Means of Aerobic Granular Sludge: Strategy Proposal for Granulation and Hydrocarbons Removal. Proceedings of EECE 2020 2017, 4, 544 -549.

AMA Style

Riccardo Campo, G. Di Bella. Shipboard Slop Treatment by Means of Aerobic Granular Sludge: Strategy Proposal for Granulation and Hydrocarbons Removal. Proceedings of EECE 2020. 2017; 4 ():544-549.

Chicago/Turabian Style

Riccardo Campo; G. Di Bella. 2017. "Shipboard Slop Treatment by Means of Aerobic Granular Sludge: Strategy Proposal for Granulation and Hydrocarbons Removal." Proceedings of EECE 2020 4, no. : 544-549.

Journal article
Published: 01 February 2017 in Biochemical Engineering Journal
Reads 0
Downloads 0

This work investigates the causes of foaming and fouling in an Intermittent Aerated – Membrane BioReactor\ud (IA-MBR) used for wastewater treatment. The experiment was divided into three periods with different aerated regimes expressed with different taeration/tcycle ratio (Period I: 60 min/180 min, Period II: 80 min/180 min, Period III: 30 min/90 min). The advanced foaming tests used allow the study of the role of extracellular polymeric substances (EPSs) on foaming and fouling. In general, in the Periods I and II, good correlations between the EPSs and the Modified Scum Index without purification (MSI0) and the Foam Power were observed. The results shown that the filamentous microorganisms, which mainly grew in the Period III, play also a key factor in the foaming and fouling. In particular, when a net proliferation of filamentous bacteria occurred (during period III with a higher number of cycles per day) both EPSs concentration and filamentous abundance influence the modified scum index obtained after two purification steps (MSI2). Finally, the processing data show that the EPSs hampered also the membrane filtration but improve the pre-filtration action of cake layer. On the other hand, the co-presence of EPSs and filamentous bacteria reduced the effect o cake layer as pre-filter

ACS Style

Riccardo Campo; Marco Capodici; Gaetano Di Bella; Michele Torregrossa. The role of EPS in the foaming and fouling for a MBR operated in intermittent aeration conditions. Biochemical Engineering Journal 2017, 118, 41 -52.

AMA Style

Riccardo Campo, Marco Capodici, Gaetano Di Bella, Michele Torregrossa. The role of EPS in the foaming and fouling for a MBR operated in intermittent aeration conditions. Biochemical Engineering Journal. 2017; 118 ():41-52.

Chicago/Turabian Style

Riccardo Campo; Marco Capodici; Gaetano Di Bella; Michele Torregrossa. 2017. "The role of EPS in the foaming and fouling for a MBR operated in intermittent aeration conditions." Biochemical Engineering Journal 118, no. : 41-52.

Journal article
Published: 01 March 2016 in Desalination and Water Treatment
Reads 0
Downloads 0
ACS Style

Riccardo Campo; Nadia Di Prima; Maria Gabriella Giustra; Gabriele Freni; Gaetano Di Bella. Performance of a moving bed-membrane bioreactor treating saline wastewater contaminated by hydrocarbons from washing of oil tankers. Desalination and Water Treatment 2016, 57, 22943 -22952.

AMA Style

Riccardo Campo, Nadia Di Prima, Maria Gabriella Giustra, Gabriele Freni, Gaetano Di Bella. Performance of a moving bed-membrane bioreactor treating saline wastewater contaminated by hydrocarbons from washing of oil tankers. Desalination and Water Treatment. 2016; 57 (48-49):22943-22952.

Chicago/Turabian Style

Riccardo Campo; Nadia Di Prima; Maria Gabriella Giustra; Gabriele Freni; Gaetano Di Bella. 2016. "Performance of a moving bed-membrane bioreactor treating saline wastewater contaminated by hydrocarbons from washing of oil tankers." Desalination and Water Treatment 57, no. 48-49: 22943-22952.

Journal article
Published: 01 January 2016 in Bioresource Technology
Reads 0
Downloads 0

A granular continuous-flow membrane bioreactor with a novel hydrodynamic configuration was developed to evaluate the stability of aerobic granular sludge (AGS). Under continuous-flow operation (Period I), AGS rapidly lost their structural integrity resulting in loose and fluffy microbial aggregates in which filamentous bacteria were dominant. The intermittent feeding (Period II) allowed obtaining the succession of feast and famine conditions that favored the increase in AGS stability. Although no further breakage occurred, the formation of new granules was very limited, owing to the absence of the hydraulic selection pressure. These results noted the necessity to ensure, on the one hand the succession of feast/famine conditions, and on the other, the hydraulic selection pressure that allows flocculent sludge washout. This preliminary study shows that the proposed configuration could meet the first aspect; in contrast, biomass selection needs to be improved.

ACS Style

Santo Fabio Corsino; Riccardo Campo; G. Di Bella; M. Torregrossa; G. Viviani. Study of aerobic granular sludge stability in a continuous-flow membrane bioreactor. Bioresource Technology 2016, 200, 1055 -1059.

AMA Style

Santo Fabio Corsino, Riccardo Campo, G. Di Bella, M. Torregrossa, G. Viviani. Study of aerobic granular sludge stability in a continuous-flow membrane bioreactor. Bioresource Technology. 2016; 200 ():1055-1059.

Chicago/Turabian Style

Santo Fabio Corsino; Riccardo Campo; G. Di Bella; M. Torregrossa; G. Viviani. 2016. "Study of aerobic granular sludge stability in a continuous-flow membrane bioreactor." Bioresource Technology 200, no. : 1055-1059.

Journal article
Published: 01 November 2015 in International Biodeterioration & Biodegradation
Reads 0
Downloads 0

The time required to stabilise mature aerobic granules is rather variable. In addition, cultivation time and the structural characteristics of granules seem to be related to the nature of wastewater influent. Granular sludge has been used for the treatment of several industrial wastewaters, but nothing has been reported about wastewater characterized by the simultaneous presence of hydrocarbons and high chloride concentration. In this work, the authors analysed the granulation process and performance as well as the physical characteristics of aerobic granules in two Granular Sequencing Batch Airlift Reactors (GSBARs), fed with acetate-based synthetic wastewater in reactor 1 (R1) and with a mixture of real and simulated slop (R2). The results obtained in 100 days show that full granulation was achieved in both reactors. The granules in R2 developed more quickly, but they appeared slightly unstable and more susceptible to breaking. Despite high salt concentration, the efficiency of phosphorous and carbon removal was satisfactory. Low nitrification activity was observed in R1, confirming that a longer time is necessary to obtain the acclimation of autotrophic biomass in aerobic granules. In R2 the combined effect of salinity and hydrocarbons caused the inhibition of the autotrophic biomass, with the consequence that nitrification was absent. Hydrocarbons were initially removed by adsorption afterwards by biological degradation with a removal efficiency of over 90%.

ACS Style

Santo Fabio Corsino; Riccardo Campo; Gaetano Di Bella; Michele Torregrossa; Gaspare Viviani. Cultivation of granular sludge with hypersaline oily wastewater. International Biodeterioration & Biodegradation 2015, 105, 192 -202.

AMA Style

Santo Fabio Corsino, Riccardo Campo, Gaetano Di Bella, Michele Torregrossa, Gaspare Viviani. Cultivation of granular sludge with hypersaline oily wastewater. International Biodeterioration & Biodegradation. 2015; 105 ():192-202.

Chicago/Turabian Style

Santo Fabio Corsino; Riccardo Campo; Gaetano Di Bella; Michele Torregrossa; Gaspare Viviani. 2015. "Cultivation of granular sludge with hypersaline oily wastewater." International Biodeterioration & Biodegradation 105, no. : 192-202.

Evaluation study
Published: 26 October 2015 in Water Science and Technology
Reads 0
Downloads 0

This work aims to assess the acclimation of microorganisms to a gradual increase of salinity and hydrocarbons, during the start-up of two moving bed membrane bioreactors (MB-MBRs) fed with saline oily wastewater. In both systems an ultrafiltration membrane was used and two types of carriers were employed: polyurethane sponge cubes (MB-MBRI) and polyethylene cylindrical carriers (MB-MBRII). A decreasing dilution factor of slops has been adopted in order to allow biomass acclimation. The simultaneous effect of salinity and hydrocarbons played an inhibitory role in biomass growth and this resulted in a decrease of the biological removal efficiencies. A reduction of bound extracellular polymeric substances and a simultaneous release of soluble microbial products (SMPs) were observed, particularly in the MB-MBRII system, probably due to the occurrence of a greater suspended biomass stress as response to the recalcitrance of substrate. On the one hand, a clear attachment of biomass occurred only in MB-MBRI and this affected the fouling deposition on the membrane surface. The processes of detachment and entrapment of biomass, from and into the carriers, significantly influenced the superficial cake deposition and its reversibility. On the other hand, in MB-MBRII, the higher production of SMPs implied a predominance of the pore blocking.

ACS Style

R. Campo; N. Di Prima; Gabriele Freni; M. G. Giustra; G. Di Bella. Start-up of two moving bed membrane bioreactors treating saline wastewater contaminated by hydrocarbons. Water Science and Technology 2015, 73, 716 -724.

AMA Style

R. Campo, N. Di Prima, Gabriele Freni, M. G. Giustra, G. Di Bella. Start-up of two moving bed membrane bioreactors treating saline wastewater contaminated by hydrocarbons. Water Science and Technology. 2015; 73 (4):716-724.

Chicago/Turabian Style

R. Campo; N. Di Prima; Gabriele Freni; M. G. Giustra; G. Di Bella. 2015. "Start-up of two moving bed membrane bioreactors treating saline wastewater contaminated by hydrocarbons." Water Science and Technology 73, no. 4: 716-724.