Temat: recycling of waste - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Simulations of the influence of changes in waste composition on their energetic properties
Autorzy:: Marczak, H.
Powiązania:: https://bibliotekanauki.pl/articles/125099.pdf
Data publikacji:: 2014
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: waste management municipal waste
recycling
calorific value of waste
Opis:: The objective to obtain the recommended (at least 50% by weight) level of recycled and reprocessed raw fractions of municipal waste in the perspective of 2020 might in turn contribute to the deterioration of the fuel properties of waste stream that is intended for incineration. In order to avoid oversizing heat recovery plants their con-struction should be based on well-defined properties of the waste fuel. The author carried out simulation calculations of the impact of changes in the composition of municipal waste on their energetic properties. The calculations of the calorific value of the waste fraction (so called combustible fraction) with the potential to be used as an alternative fuel were done.
Źródło:: Journal of Ecological Engineering; 2014, 15, 4; 90-97
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Recyclability of Ore Beneficiation Wastes at the Lomonosov Deposit
Autorzy:: Pashkevich, Maria A.
Petrova, Tatyana A.
Powiązania:: https://bibliotekanauki.pl/articles/124758.pdf
Data publikacji:: 2019
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: waste storage
environmental hazard
wastes of diamond ore beneficiation
waste recycling
Opis:: The article presents the data based on the long-term observations of the Lomonosov mine tailing storage impact on the natural environment. The study of the chemical, mineral and phase composition of waste, sampled at the tailing site, was carried out. It was determined that the ore beneficiation waste in the Lomonosov deposit is generally represented by the minerals of the smectite group. According to the X-ray diffraction analysis data, the beneficiation wastes are a bi-mineral mixture of montmorillonite and talc with pyrophyllite impurities. The wastes of this composition are potentially magnesia raw materials used in the production of construction materials, such as cement, ceramic bricks, etc. Experimental studies have justified the use of the method of wastes recycling based on the roasting of the ore beneficiation tailings, with the number of process options, depending on the temperature regimes and the exposure time.
Źródło:: Journal of Ecological Engineering; 2019, 20, 2; 27-33
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: The Phenomenon of Medical Waste Recycling in Indonesia: Contact Time and Chlorine Dose as a Disinfectant with the Bio-Indicator Bacillus subtilis and Bacillus stearothermophilus
Autorzy:: Fikri, Elanda
Kurniati, Iis
Wartiniyati, -
Prijanto, Teguh Budi
Pujiono, -
Syarief, Osman
Khair, Amar Sharaf Eldin
Powiązania:: https://bibliotekanauki.pl/articles/1839585.pdf
Data publikacji:: 2021
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: recycling
medical waste
dosage
duration of contact
chlorine
disinfection
Opis:: Efforts that have been done to manage the Hazardous and Toxic waste into non-Hazardous and Toxic waste are done by emptying, shredding, washing, and rinsing at least 3 times and disinfecting using chlorine. This is in accordance with the Indonesian Regulation of Ministry of Health No. 27 of 2017, which has stated that surface cleaning is permitted to use 0.05% chlorine during the process. Furthermore, in the Indonesian Regulation of the Ministry of Environment and Forestry No.56 of 2015, the chemical disinfection process is permitted to use an additional 3–6% sodium hypochlorite (NaOCl). However, there are still differences in dosage and it has not been mentioned regarding the immersion period during the disinfection process on both of the regulations. The purpose of this study was to determine the difference in contact time and the dose of chlorine as a disinfectant on the number of Bacillus subtilis and Bacillus stearothermophilus in the medical waste recycling process. The research design used in this study was a Randomized Factorial Design with experimental research type. A total of 104 recyclable medical waste samples were taken, using 3 treatments and 6 repetitions. The average temperature of the chlorine solution at the contact time of 15 minutes, 30 minutes, and 45 minutes was 24.34 °C; 24,53 °C; and 24,54 °C respectively, while the average pH of the chlorine solution at the contact time of 15 minutes, 30 minutes, and 45 minutes was 8.344; 8,375; and 8,461 respectively. The results showed that there was no difference in the duration of contact and the dose of chlorine as a disinfectant in the medical waste recycling process with a p-value of 0.377. The percentage reduction in the number of Bacillus subtilis and Bacillus stearothermophilus before and after treatment was 99.99% based on 4 positive controls. The findings in this study were the duration of contact time and the effective dose used in the recycling process of medical waste, which was at a dosage of 0.03% with 45 minutes of contact time. The government needs to conduct a re-assessment regarding the recommended ideal dosage in the surface disinfection process so that it would not cause a potential risk to humans or the environment.
Źródło:: Journal of Ecological Engineering; 2021, 22, 4; 47-58
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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