Treatment of olive mill wastewater using a coagulation-flocculation process either as a single step or as post-treatment after aerobic biological treatment

2013 ◽  
Vol 89 (12) ◽  
pp. 1866-1874 ◽  
Author(s):  
Katerina Pelendridou ◽  
Michail K. Michailides ◽  
Dimitris P. Zagklis ◽  
Athanasia G. Tekerlekopoulou ◽  
Christakis A. Paraskeva ◽  
...  
Keyword(s):  
Biological Treatment ◽  
Single Step ◽  
Olive Mill Wastewater ◽  
Post Treatment ◽  
Flocculation Process ◽  
Olive Mill

scholarly journals Multi-Response Optimization of Coagulation and Flocculation of Olive Mill Wastewater: Statistical Approach

2021 ◽  
Vol 11 (5) ◽  
pp. 2344
Author(s):  
Srikanth Vuppala ◽  
Riyaaz Uddien Shaik ◽  
Marco Stoller
Keyword(s):  
Grey Relational Analysis ◽  
Research Work ◽  
Olive Mill Wastewater ◽  
Relational Analysis ◽  
Coagulation And Flocculation ◽  
Coagulant Dosage ◽  
Response Optimization ◽  
Grey Relational ◽  
Flocculation Process ◽  
Olive Mill

Olive oil production is one of the important industrial sectors within the agro-food framework of the Mediterranean region, economically important to the people working in this sector, although there is also a threat to the environment due to residues. The main wastes of the olive oil extraction process are olive mill wastewater (OMW) and olive husks which also require proper treatment before dismissal. In this research work, the main goal is to introduce grey relational analysis, a technique for multi-response optimization, to the coagulation and flocculation process of OMW to select the optimum coagulant dosage. The coagulation and flocculation process was carried out by adding aluminum sulfate (Alum) to the waste stream in different dosages, starting from 100 to 2000 mg/L. In previous research work, optimization of this process on OMW was briefly discussed, but there is no literature available that reports the optimal coagulant dosage verified through the grey relational analysis method; therefore, this method was applied for selecting the best operating conditions for lowering a combination of multi-responses such as chemical oxygen demand (COD), total organic carbon (TOC), total phenols and turbidity. From the analysis, the 600 mg/L coagulant dosage appears to be top ranked, which obtained a higher grey relational grade. The implementation of statistical techniques in OMW treatment can enhance the efficiency of this process, which in turn supports the preparation of waste streams for further purification processes in a sustainable way.

scholarly journals Nanocomposites Photocatalysis Application for the Purification of Phenols and Real Olive Mill Wastewater through a Sequential Process

2020 ◽  
Vol 10 (20) ◽  
pp. 7329
Author(s):  
Srikanth Vuppala ◽  
Marco Stoller
Keyword(s):  
Operating Temperature ◽  
Oxygen Demand ◽  
Olive Mill Wastewater ◽  
Light Sources ◽  
Sequential Process ◽  
Phenol Solution ◽  
Aqueous Streams ◽  
Flocculation Process ◽  
Phenol Wastewater ◽  
Olive Mill

In this study, a synthetic phenol solution of water and raw olive mill wastewater (OMW) were considered to achieve purification of the aqueous streams from pollutants. Only OMW was initially submitted to a coagulation/flocculation process, to reduce the turbidity, phenols, and chemical oxygen demand (COD). This first treatment appeared to be mandatory in order to remove solids from wastewater, allowing the successive use of laboratory-made core-shell nanocomposites. In detail, the optimal coagulant concentration, i.e., chitosan, was 500 mg/L, allowing a reduction of the turbidity and the COD value by 90% and 33%, respectively. After this, phenol wastewater was tested for photocatalysis and then OMW was treated by employing the laboratory-made nanocomposites in a photoreactor equipped with visible light sources and using optimal catalyst concentrations, which allowed for an additional 45% reduction of the COD of the OMW. In addition to this, the effect of the operating temperature was investigated on the photocatalytic process, and suitable kinetic models proposed.

Two-stage biological treatment of olive mill wastewater with whey as co-substrate

2007 ◽  
Vol 59 (4) ◽  
pp. 273-282 ◽  
Author(s):  
G. Martinez-Garcia ◽  
A.C. Johnson ◽  
R.T. Bachmann ◽  
C.J. Williams ◽  
A. Burgoyne ◽  
...  
Keyword(s):  
Biological Treatment ◽  
Olive Mill Wastewater ◽  
Two Stage ◽  
Olive Mill

scholarly journals Adaptation and population dynamics of Azotobacter vinelandii during aerobic biological treatment of olive-mill wastewater

1999 ◽  
Vol 30 (4) ◽  
pp. 301-311 ◽  
Author(s):  
Constantinos Ehaliotis ◽  
Kalliopi Papadopoulou ◽  
Maria Kotsou ◽  
Ioanna Mari ◽  
Constantinos Balis
Keyword(s):  
Population Dynamics ◽  
Biological Treatment ◽  
Azotobacter Vinelandii ◽  
Olive Mill Wastewater ◽  
Olive Mill

scholarly journals Aerobic biological treatment of olive mill wastewater previously treated by an ozonation stage

2000 ◽  
Vol 51 (5) ◽  
Author(s):  
Jesús Beltrán De Heredia Alonso ◽  
Joaquín Torregrosa Antón ◽  
Juan García Rodríguez ◽  
María Del Pilar Ramos Viseas ◽  
Joaquín R. Domínguez Vargas
Keyword(s):  
Biological Treatment ◽  
Olive Mill Wastewater ◽  
Previously Treated ◽  
Olive Mill

Biological treatment of olive mill wastewater in a sequencing batch reactor

2014 ◽  
Vol 85 ◽  
pp. 71-78 ◽  
Author(s):  
Agostina Chiavola ◽  
Geneve Farabegoli ◽  
Federica Antonetti
Keyword(s):  
Biological Treatment ◽  
Sequencing Batch Reactor ◽  
Batch Reactor ◽  
Olive Mill Wastewater ◽  
Olive Mill

Biological treatment with fungi of olive mill wastewater pre-treated by photocatalytic oxidation with nanomaterials

2015 ◽  
Vol 115 ◽  
pp. 234-242 ◽  
Author(s):  
V. Nogueira ◽  
I. Lopes ◽  
A.C. Freitas ◽  
T.A.P. Rocha-Santos ◽  
F. Gonçalves ◽  
...  
Keyword(s):  
Biological Treatment ◽  
Photocatalytic Oxidation ◽  
Olive Mill Wastewater ◽  
Olive Mill

Degradation of olive mill wastewater by the combination of Fenton's reagent and ozonation processes with an aerobic biological treatment

2001 ◽  
Vol 44 (5) ◽  
pp. 103-108 ◽  
Author(s):  
J. Beltrán-Heredia ◽  
J. Torregrosa ◽  
J. García ◽  
J.R. Dominguez ◽  
J.C. Tierno
Keyword(s):  
Biological Treatment ◽  
Chemical Oxidation ◽  
Polyphenolic Compounds ◽  
Olive Mill Wastewater ◽  
Fenton’S Reagent ◽  
Fenton's Reagent ◽  
Oxidation Processes ◽  
Moderate Reduction ◽  
Reagent Treatment ◽  
Olive Mill

Degradation of olive mill wastewater (OMW) by means of two chemical oxidation processes (Fenton's reagent and ozonation) and their consecutive treatments with aerobic microorganisms have been studied. Fenton's reagent treatment moderately reduces COD and to a greater extent the polyphenolic compounds. Ozonation contributed to low conversion of COD and moderate reduction of polyphenols. The aerobic biological treatments degrade to values higher than 70% and 90% for COD and polyphenolic compounds, respectively. A kinetic study has been carried out in each process, determining the representative kinetic parameters of each model.

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