Tag Archives: compost

xxx T. Ahmadi, C.A. Casas, N. Escobar and Y.E. García
Municipal organic solid waste composting: development of a tele-monitoring and automation control system
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Municipal organic solid waste composting: development of a tele-monitoring and automation control system

T. Ahmadi¹*, C.A. Casas¹, N. Escobar² and Y.E. García¹

¹University of Cundinamarca, Faculty of Engineering, 18th Diagonal 20-29, Fusagasugá, Colombia
²University of Cundinamarca, Faculty of Agricultural Sciences, 18th Diagonal 20-29, Fusagasugá, Colombia
*Correspondence: tahmadi@ucundinamarca.edu.co

Abstract:

The Organic Solid Waste (OSW) generation have experienced high growth in the last decades. Moreover, the treatment and management of them have become a priority in the environmental policy of many cities, due to the sanitary and environmental problems related to the OSW elimination. Between 2 and 3 metric tons per day of organic residues are generated in the local market square of Fusagasugá-Colombia, without having any transformation program or technological alternatives for their decomposition. This paper presents the design and implementation of an experimental reactor for composting that includes a measurement stage, signal conditioning, data acquisition (DAQ), and data storage, together with a control and telemetric supervision system through a Human-Machine Interface (HMI), which allows manipulation of some key variables of the composting process remotely via the Internet.

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1444–1454 L. Regni#, D. Pezzolla#, G. Gigliotti and P. Proietti
The sustainable reuse of compost from a new type of olive mill pomace in replacing peat for potted olive tree
Abstract |
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The sustainable reuse of compost from a new type of olive mill pomace in replacing peat for potted olive tree

L. Regni¹#*, D. Pezzolla²#*, G. Gigliotti² and P. Proietti¹

¹Department of Agricultural, Food and Environmental Sciences, University of Perugia, via Borgo XX Giugno, 74, IT06121 Perugia, Italy
²Department of Civil and Environmental Engineering, University of Perugia, via G. Duranti 93, IT06125 Perugia, Italy
#these authors contributed equally to the work
*Correspondence: regni.luca.agr@gmail.com; daniela.pezzola@unipg.it

Abstract:

The attention for the replacement of peat in growing substrates is increasing due to its environmental and economic advantages. The aim of the present work was to evaluate the impact of peat substitution by new type olive mill pomace and its compost on the vegetative activity of potted olive trees. A new type of humid pomace (hP) derived from an innovative two phase extraction system and its derived compost (C-hP) are used as total or partial (50% vol/vol) replacement of peat in olive growing substrate. The main chemical characteristics (moisture, water extractable organic carbon, total nitrogen, C/N ratio and electrical conductivity) of the hP and C-hP were measured. In order to evaluate the effects of the peat substitution on the plants vegetative activity, measurements of mortality, plant height, leaf net photosynthesis and plant growth (through final destructive measurements) were carried out. The use of hP resulted in a significant increase of the salinity of the substrate. The water extractable organic carbon concentration was higher in all substrates where peat was ewplaced and in particular when C-hP was used. The total replacement of peat with hP caused 100% mortality of the plants while C-hP can substitute peat up to 50% without causing a significative reduction of the final plant growth.

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