Biological Stability of Organic Fraction of Municipal Solid Wastes During Composting Processes

Alida Cosenza, Michele Torregrossa, Gaspare Viviani, Gaetano Di Bella, Gaetano Di Bella

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2 Citazioni (Scopus)

Abstract

The article shows results of monitoring of a Sicilian composting plant (southern Italy). In particular, the biological stability of the organic fraction of municipal solid wastes has been monitored. Two experimental periods have been carried out: (1) plant start-up and (2) first operation period. The biological stability has been evaluated throughout the dynamic respiration index (DRI). This index was determined at different stages of process, for each phase. To our knowledge, no work has been previously published on the monitoring of composting plants in southern Italy. This work has the originality of using the DRI measured data for improving operation of a full-scale composting plant, rarely adopted in literature. Results show that storage time of the untreated matrix strongly influences performance of the composting process in terms of biological stability. At high value of storage time (>4 to 5 days) the pH decreased due to acetic acid production. Consequently, inhibition of the aerobic stabilization process takes place. Indeed, after treatment the DRI value was still quite high: 1,709 and 2,650mgO(2)/(kgVS.h) during start-up and start-up and first operation period, respectively. Results also reveal the need of using all operational parameters as reference for regulation of ventilation systems.
Lingua originaleEnglish
pagine (da-a)1117-1125
Numero di pagine9
RivistaEnvironmental Engineering Science
Volume35
Stato di pubblicazionePublished - 2018

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Composting
Municipal solid waste
composting
municipal solid waste
respiration
Monitoring
monitoring
Acetic acid
Acetic Acid
acetic acid
Ventilation
ventilation
stabilization
Stabilization
matrix
index

All Science Journal Classification (ASJC) codes

  • Environmental Chemistry
  • Waste Management and Disposal
  • Pollution

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title = "Biological Stability of Organic Fraction of Municipal Solid Wastes During Composting Processes",
abstract = "The article shows results of monitoring of a Sicilian composting plant (southern Italy). In particular, the biological stability of the organic fraction of municipal solid wastes has been monitored. Two experimental periods have been carried out: (1) plant start-up and (2) first operation period. The biological stability has been evaluated throughout the dynamic respiration index (DRI). This index was determined at different stages of process, for each phase. To our knowledge, no work has been previously published on the monitoring of composting plants in southern Italy. This work has the originality of using the DRI measured data for improving operation of a full-scale composting plant, rarely adopted in literature. Results show that storage time of the untreated matrix strongly influences performance of the composting process in terms of biological stability. At high value of storage time (>4 to 5 days) the pH decreased due to acetic acid production. Consequently, inhibition of the aerobic stabilization process takes place. Indeed, after treatment the DRI value was still quite high: 1,709 and 2,650mgO(2)/(kgVS.h) during start-up and start-up and first operation period, respectively. Results also reveal the need of using all operational parameters as reference for regulation of ventilation systems.",
author = "Alida Cosenza and Michele Torregrossa and Gaspare Viviani and {Di Bella}, Gaetano and {Di Bella}, Gaetano",
year = "2018",
language = "English",
volume = "35",
pages = "1117--1125",
journal = "Environmental Engineering Science",
issn = "1092-8758",
publisher = "Mary Ann Liebert Inc.",

}

TY - JOUR

T1 - Biological Stability of Organic Fraction of Municipal Solid Wastes During Composting Processes

AU - Cosenza, Alida

AU - Torregrossa, Michele

AU - Viviani, Gaspare

AU - Di Bella, Gaetano

AU - Di Bella, Gaetano

PY - 2018

Y1 - 2018

N2 - The article shows results of monitoring of a Sicilian composting plant (southern Italy). In particular, the biological stability of the organic fraction of municipal solid wastes has been monitored. Two experimental periods have been carried out: (1) plant start-up and (2) first operation period. The biological stability has been evaluated throughout the dynamic respiration index (DRI). This index was determined at different stages of process, for each phase. To our knowledge, no work has been previously published on the monitoring of composting plants in southern Italy. This work has the originality of using the DRI measured data for improving operation of a full-scale composting plant, rarely adopted in literature. Results show that storage time of the untreated matrix strongly influences performance of the composting process in terms of biological stability. At high value of storage time (>4 to 5 days) the pH decreased due to acetic acid production. Consequently, inhibition of the aerobic stabilization process takes place. Indeed, after treatment the DRI value was still quite high: 1,709 and 2,650mgO(2)/(kgVS.h) during start-up and start-up and first operation period, respectively. Results also reveal the need of using all operational parameters as reference for regulation of ventilation systems.

AB - The article shows results of monitoring of a Sicilian composting plant (southern Italy). In particular, the biological stability of the organic fraction of municipal solid wastes has been monitored. Two experimental periods have been carried out: (1) plant start-up and (2) first operation period. The biological stability has been evaluated throughout the dynamic respiration index (DRI). This index was determined at different stages of process, for each phase. To our knowledge, no work has been previously published on the monitoring of composting plants in southern Italy. This work has the originality of using the DRI measured data for improving operation of a full-scale composting plant, rarely adopted in literature. Results show that storage time of the untreated matrix strongly influences performance of the composting process in terms of biological stability. At high value of storage time (>4 to 5 days) the pH decreased due to acetic acid production. Consequently, inhibition of the aerobic stabilization process takes place. Indeed, after treatment the DRI value was still quite high: 1,709 and 2,650mgO(2)/(kgVS.h) during start-up and start-up and first operation period, respectively. Results also reveal the need of using all operational parameters as reference for regulation of ventilation systems.

UR - http://hdl.handle.net/10447/298098

M3 - Article

VL - 35

SP - 1117

EP - 1125

JO - Environmental Engineering Science

JF - Environmental Engineering Science

SN - 1092-8758

ER -