In this study, composting of opium poppy processing solid waste with poultry manure and rough sawdust with five initial Carbon/Nitrogen (C/N ratio) ratio ranging from 20.45, 25.00, 29.03, 32.60 and 37.47 was carried out using fifteen-identical cylindrical stainless steel reactors, each of which has an effective volume of 100 L to determine the effects of initial C/N ratio on composting loss due to degradation (dry matter loss, organic matter loss, carbon loss, and nitrogen loss, and ammonia loss). The experiment lasted for 18.65 days. In the experiment, the temperature, electrical conductivity, pH, moisture, organic matter, total carbon (C) and nitrogen (N) contents and NH3-N were monitored. Dry matter loss, organic matter loss, carbon loss, nitrogen loss, and NH3-N loss were expressed as a function of initial C/N ratio. Results showed that the highest dry matter loss and organic matter loss existed at the CN ratio of 29.70 and 31.18, respectively. The highest carbon loss occurred at the C/N ratio of 30.83. Both nitrogen loss and NH3-N loss decreased as the C/N ratio increased. ...
Drying of sultana grape fruits was studied using a microwave dryer under the laboratory environment at the Department of Agricultural Machinery and Technologies Engineering at Suleyman Demirel University. In this study, the effects of microwave drying and fan assisted microwave drying on drying time, drying ratio of grape samples were examined. Sultana grape fruits were dried by using microwave, microwave-convective combination and convective drying, respectively. The effects of microwave drying (180, 540 and 720 W); combined convective and microwave drying (180W-100ºC, 360W-100ºC and 540 W-100ºC), convective drying (100, 150, 200ºC) on drying time, drying rate of grape samples have been investigated. The drying data were applied to four different mathematical models, namely, Midilli-Kucuk, Weibull distribution, logistic and Alıbas Equation Models. The performances of these models were compared according to the coefficient of determination (R2), standard error of estimate (SEE) and residual sum of squares (RSS), between the observed and predicted moisture ratios. The drying characteristic curves were estimated against four mathematical models and the Weibull distribution was found to be the best descriptive model for all the drying experiments of thin layer grape fruit samples except for 540W-100ºC. Alıbas model equation was also found to be the best descriptive model ...
In this research, it was aimed to determine the amount of compost obtained from organic kitchen waste in Isparta province and the resulting economic loss when these wastes were not recycled as compost. Composting of organic kitchen wastes collected from the selected households was carried out in a home composter in the Laboratory of Composting and Biogas, Department of Agricultural Machinery and Technology Engineering, Süleyman Demirel University. The results showed that the concentrations of N, P2O5, K2O, MgO, and CaO of the finished compost were determined as 1.73%, 1.00%, 1.91%, 1.00%, and 3.72%, respectively. Results revealed that kitchen organic waste corresponding to 0.66 kg N, 0.38 kg P2O5, 0.73 kg K2O, 0.38 kg MgO, and 1.41 kg CaO kitchen waste per household per year was wasted without utilization. In the study, the economic value of the wastes when not recycled as compost was determined as 54658$, 29389$, and 111237$ per year corresponding urea, triple superphosphate, and potassium sulphate, respectively based on the commercial fertilizer price. It was determined that compost obtained from organic kitchen wastes was found to be 386164$ per year when economic value was calculated directly as compost rather than as equivalent commercial fertilizer. ...
In this study, it was aimed to compare the economic aspect of different applications of composts obtained from solid wastes of rose oil processing (RC) applications in organic apple production. The data used in the study were obtained from the experiments carried out in Egirdir Fruit Research Institute of Food, Agriculture and Livestock Ministry, Turkey. The trial was carried out with a total of 6 applications consisting of 5 different nutritional applications (RC, ERC (50%) (half dosage of the enriched RC, ERC (100%) (full dosage of the enriched RC, AB (azotobacter), and ST (standard application: 50% commercial solid organic manure +50% commercial liquid manure)) and 1 control (no nutrients applications). According to the results of the research, it was determined that apple production in all treatments was higher than control application. The result showed that the highest yield was determined for ERC (100%). The production costs per decare of the organic production in all treatments were found to be higher than the control application. Production cost was 854.97 USD da-1 in control application, while it varied between 914.61 USD da-1 and 984.79 USD da-1 in all treatments. When a comparison was made in terms of net profit, it was determined ...
