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Household food-waste composting is an attractive alternative for Brazilian waste. In the first trial, the composter was filled weekly over two months. In the last third trial, the composter was filled with. The physical chemical parameters of the compost were monitored and the total. In all trials, the temperature varied between Only the compost from Trial 2, which had MPN g.
Esta pesquisa investigou o. No segundo ensaio, a composteira foi preenchida uma.
Household food-waste composting using a small-scale composter
O valor de pH, os teores. Brazilian households, small commercial enterprises and cleaning services produce nearly. The National Plan of Solid Waste prioritizes composting as an alternative. Fomestica few composting systems in operation in Brazil are mostly open-air, centralized and. There are few programs or studies regarding household composting. Composting has advantages over incineration and disposal in landfills due to lower operating.
There cokposteira also Brazilian regions in semi-arid climates with poor soil nutrients where the. Further, there are highly populated urban areas. Composting is the decomposition and stabilization of the organic fraction of solid waste. The most important variables.
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It is evident that the success of household. Several small to medium sized composters L have been developed and their. In this work, an exploratory study was conducted. Several investigations on home composting have been conducted over the past decade with a. Most of vomposteira research efforts cited have utilized laboratory scale bench or medium-sized. However, these systems cannot be installed in some domesitca due to the lack of.
Therefore, this study evaluated the operation. In various trials, composters. Wood chips used as a. The composting operation was divided. The food-residue size was manually reduced to 1.
The food waste and wood chips ratio was. Trial 1 — The composters were monitored in duplicate. A semi-continuous feed operating. The composters were filled within a seven-day frequency. In this trial, manual turning of the mixture was done daily. Trial 2 — On the first day the batch compost was filled with fresh food waste and wood.
The turning frequency during the first week was daily and every 7 days thereafter. The flowchart in Figure 2 illustrates the filling of the compost bins with sufficient. Several parameters were monitored over time: Temperature TpH, Moisture M.
The pH value was determined with a pH meter equipped with electrodes using 1 g of the. Total Kjeldahl nitrogen was. The compost quality was analyzed by considering the reference limits of the norms. The composting process was monitored for 63 days in Trial 1, 42 days in Trial 2 and In all trials, the temperature of the compost.
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The highest temperatures observed were obtained in the first three days after the addition. The highest temperatures, According to Ryckeboer et al. The self-heating during the composting process is determined by the biodegradability.
The temperature variation below the thermophilic range observed in. Faverial and Sierra observed a change of only a few degrees above room.
Figure 4 graphically shows the temporal behavior of some parameters that will be. The pH was monitored over time and a domfstica pH increase was evident in all trials. Table 2 and Figure 4-B. However, in Trials 1 and 2, the final pH 6. Composteirx 3, the final pH was 7.
somestica The low pH values obtained at the start of the experiment can be. The moisture content was monitored throughout the process Figure 4-A ; Table 2 shows. In all trials, the moisture registered from the composted. No leachate production was recorded in any of the performed. In Trial 2, which.
This higher percentage is explained by the fact that no new. Moisture content is the second variable, after temperature, which strongly influences the. Extremely high levels of moisture. On the other hand, if the moisture level decreases below a critical. In addition, extremely low moisture contents may cause operational problems, resulting in.
The wet and dry mass of the compost mixture was determined at the beginning and end. The initial mass was significantly reduced in all experiments. The third trial, on the other hand, showed a dry mass reduction of only. Although they help to control the. However, the mass balance shown in Table 3 demonstrates higher.
As expected, the carbon levels presented a similar behavior to the organic matter content. Although the final carbon levels are greater than the initial levels in almost all. The organic substrates and the structural materials.
Table 4 shows that the results obtained in this study are consistent with those found in. The reduction in the organic matter content. Table 2 and Figure 4-E show that, with the exception of Trial 1, the nitrogen content. Trials 2 and 3, respectively Figure 4-F. At the end of the composting process, there was a.
However, the rate of organic nitrogen mineralization is lower than that of organic. Some literature reference values are given for home. Organic fertilizers class C, which includes raw materials originating from domestic waste. After each test, the final compost was sieved and particles smaller than 0. In Trials 2 and 3, moisture was slightly. Only the compost resulting from Trial 2 did not match the standards.
This study has demonstrated that: Even if the compound did not always suit agricultural use, its low. Mass balances and life. Influence of composting system on compost quality with focus. Home composting of household biodegradable wastes under the.
Household organic waste composting using. Experimental and modelling approaches for food waste. Environmental assessment of two home composts with high and low gaseous emissions. A survey of bacteria and fungi occurring during composting and.
Effect of bulking agents on maturity and.