Monitoring of the composting process of different agroindustrial waste: Influence of the operational variables on the odorous impact

Toledo, M.; Siles, J.A.; Gutiérrez, M.C.; Martı́n, M.A.

doi:10.1016/j.wasman.2018.03.042

Cited by 53 publications

(27 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Composting is a safe method of waste management [6] and has the potential to improve soil structure, texture, and aeration, as well as improve the water retention capacity of the soil [7]. In addition, the Environmental Protection Agency (EPA) of the United States declared that composting reduces methane emissions in landfills, lowering their carbon footprint [8].…”

Section: Introductionmentioning

confidence: 99%

Analysis of Quality of Backyard Compost and Its Potential Utilization as a Circular Bio-Waste Source

et al. 2021

View full text Add to dashboard Cite

The use and quality analysis of household compost have become very important issues in recent years due to the increasing interest in local food production and safe, self-produced food. The phenomenon was further exacerbated by the COVID-19 pandemic quarantine period, which gave new impetus to the growth of small home gardens. However, the knowledge associated with making high-quality compost is often lacking in home gardeners. Therefore, the objective of this research was to find answers to the following questions: can the quality of backyard compost be considered safe in terms of toxicity and nutrient content? Can weed seed dispersion affect the usability of backyard compost? In general, can the circulation of organic matter be increased with the spread of home composting? In this study, 16 different house composts were analysed for stability, weed seed contamination, toxic elements, and nutrient content using analysis of variance. The results of the research showed that the quality properties of the composts (including their weed seed dispersion effect) were greatly influenced by the different techniques and raw materials used. The toxicity levels, as well as the content of macro and microelements, were within the parameters of safe-quality compost. The specific macronutrient (Ca, Mg) and micronutrient (Fe, Mn) contents of the tested composts have a similar and, in some cases, more favorable nutrient supply capacity in crop production than the frequently-used cow manure-based composts. With a plan of basic education on composting, there is potential to encourage farmyard composting.

show abstract

Section: Introductionmentioning

confidence: 99%

Analysis of Quality of Backyard Compost and Its Potential Utilization as a Circular Bio-Waste Source

et al. 2021

View full text Add to dashboard Cite

show abstract

“…Odors of anthropogenic origin are usually emitted as a result of industrial, municipal, and agricultural activities, i.e., wastewater and waste management, food industry, rendering plants, livestock buildings, foundries, petrochemical parks, slaughterhouses, paper and pulp facilities, and biosolids [4][5][6][7][8][9][10][11][12][13][14][15][16][17][18]. The municipal wastewater treatment process, allowing for odor emission reduction, is often omitted, resulting in the unpleasant smell of atmospheric air [19].…”

Section: Introductionmentioning

confidence: 99%

“…Recent research has shown that dynamic olfactometry is a technique alternative to monitoring bioprocesses, reducing the number of analyses, their time, and cost [27][28][29][30][31][32]. The technique followed by dispersion models permits quantification of the odor impact of a process [15].…”

Section: Introductionmentioning

confidence: 99%

“…Different authors have presented information on the characteristics of odors from wastewater treatment processes by means of the olfactometry technique, although, the knowledge to identify odorous emissions from different sources is not yet sufficient [10,15,24]. While relationships between odor perception and odorant concentrations have been investigated in the scope of different fields, inter alia living stocks, food waste composting plants, and WWTPs [4,[33][34][35][36], studies focusing on odor-odorant relationships in wastewater treatment systems have been mostly performed for outdoor facilities [37][38][39].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Assessment of the Effects of Wastewater Treatment Plant Modernization by Means of the Field Olfactometry Method

Kulig

Szyłak-Szydłowski

2019

Water

View full text Add to dashboard Cite

Methodological aspects of odor studies in ex-post analyses for Polish wastewater management facilities were analyzed based on the example of a modernized and enlarged wastewater treatment plant (WWTP) in Mazovia, in the vicinity of the Warsaw agglomeration. It is a mechanical–biological treatment plant with increased efficiency of biogen removal, using activated sludge in the treatment process, with a maximum hydraulic capacity of 60,000 m3/day. Olfactometric research was carried out by means of a method based on identification and characterization of the odor plume emitted from the examined source. This paper presents the results of odor intensity assessment (in sensory examinations according to a 6-stage scale) and odor concentration measurement (using portable field olfactometers) after the completion of the project, and compares them with similar studies conducted before the commencement of the investment. A total of 10 measurement series were carried out before modernization, and 12 after modernization of the WWTP. Odor concentration and intensity were determined, and the current meteorological situation was assessed at the measurement and observation points (receptors) located within the premises (in total 462 points) and around the WWTP (342 points). In each series of measurements on the windward side of the treatment plant, the background of air pollution with odorous substances was marked. The research showed that air flowing into the area of the sewage treatment plant is clean in terms of odor. During the research, basic sources of odor nuisance were identified, and their impact before and after modernization was characterized. The results presented in radar diagrams show changes in the percentage distribution of frequency of occurrence of individual intensity values at receptor points within and outside the area of the treatment plant. After modernization, a significant decrease in the concentration of odor emitted from the sludge dewatering building and sludge containers was determined. The air-tightness of the sewage channel (covered with concrete slabs and sealed) resulted in a significant decrease in the concentration of odor emitted from this source. Waste (in particular, sewage sludge) collected in the emergency waste storage yard was identified as the main source of odor nuisance. The waste, even after modernization, was an emitter of odorous compounds spreading outside the area of the WWTP. Nevertheless, as a result of the investment, the desired effect of reduction of the degree of odor nuisance was achieved.

show abstract

“…Several studies considered oxygen consumption as a reliable variable for evaluating the development of composting, due to the fact of its correlation with the metabolic potential of compost [8,16,17,18], especially because oxygen is directly responsible for the oxidation of organic matter [19]. This can be measured through respirometry, a widely used and recognized technique for measuring the oxygen consumption of microorganisms [20,21].…”

Section: Introductionmentioning

confidence: 99%

Portable and Low-Cost Respirometric Microsystem for the Static and Dynamic Respirometry Monitoring of Compost

Bermúdez

Saldarriaga

Osma

2019

Sensors

View full text Add to dashboard Cite

Composting is considered an option for the disposal of organic waste; however, the development of portable and low-cost systems for its monitoring is of high interest. Therefore, in this study, respirometric microsystems were designed and tested including two integrated oxygen sensors for the measurement of compost samples under static and dynamic conditions with high portability and ease of use. The cost of each sensor was calculated as 2 USD, while the cost of the whole respirometric microsystem was calculated as 6 USD. The electronic system for real-time monitoring was also designed and implemented. The designed systems were tested for over 6 weeks for the determination of compost quality using real samples. The respirometric microsystem was compared to a commercial respirometry system and a standard laboratory test using hierarchical analysis which included costs, portability accuracy, analysis time, and integration of new technologies. The analysis showed a global score of 6.87 for the respirometric microsystem compared to 6.70 for the standard laboratory test and 3.26 for the commercial system.

show abstract

Monitoring of the composting process of different agroindustrial waste: Influence of the operational variables on the odorous impact

Cited by 53 publications

References 35 publications

Analysis of Quality of Backyard Compost and Its Potential Utilization as a Circular Bio-Waste Source

Analysis of Quality of Backyard Compost and Its Potential Utilization as a Circular Bio-Waste Source

Assessment of the Effects of Wastewater Treatment Plant Modernization by Means of the Field Olfactometry Method

Portable and Low-Cost Respirometric Microsystem for the Static and Dynamic Respirometry Monitoring of Compost

Contact Info

Product

Resources

About