scholarly journals Medical waste treatment and electricity generation using pyrolyzer-rankine cycle for specialty hospitals in Quezon City, Philippines

2020 ◽  
Vol 463 ◽  
pp. 012180
Author(s):  
F Manegdeg ◽  
L O Coronado ◽  
R Paña
Keyword(s):  
Electricity Generation ◽  
Waste Treatment ◽  
Rankine Cycle ◽  
Medical Waste ◽  
Quezon City ◽  
Specialty Hospitals

scholarly journals Medical Waste Treatment Technologies for Energy, Fuels, and Materials Production: A Review

Energies ◽  
2021 ◽  
Vol 14 (23) ◽  
pp. 8065
Author(s):  
Georgios Giakoumakis ◽  
Dorothea Politi ◽  
Dimitrios Sidiras
Keyword(s):  
Waste Management ◽  
Waste Treatment ◽  
Batch Reactor ◽  
Rankine Cycle ◽  
Hydrothermal Carbonization ◽  
Medical Waste ◽  
Enzymatic Oxidation ◽  
Management Problem ◽  
Treatment Technologies ◽  
Medical Waste Management

The importance of medical waste management has grown during the COVID-19 pandemic because of the increase in medical waste quantity and the significant dangers of these highly infected wastes for human health and the environment. This innovative review focuses on the possibility of materials, gas/liquid/solid fuels, thermal energy, and electric power production from medical waste fractions. Appropriate and promising treatment/disposal technologies, such as (i) acid hydrolysis, (ii) acid/enzymatic hydrolysis, (iii) anaerobic digestion, (vi) autoclaving, (v) enzymatic oxidation, (vi) hydrothermal carbonization/treatment, (vii) incineration/steam heat recovery system, (viii) pyrolysis/Rankine cycle, (ix) rotary kiln treatment, (x) microwave/steam sterilization, (xi) plasma gasification/melting, (xii) sulfonation, (xiii) batch reactor thermal cracking, and (xiv) torrefaction, were investigated. The medical waste generation data were collected according to numerous researchers from various countries, and divided into gross medical waste and hazardous medical waste. Moreover, the medical wastes were separated into categories and types according to the international literature and the medical waste fractions’ percentages were estimated. The capability of the examined medical waste treatment technologies to produce energy, fuels, and materials, and eliminate the medical waste management problem, was very promising with regard to the near future.

Assessment of bio-medical waste before and during the emergency of novel Coronavirus disease pandemic in India: A gap analysis

2021 ◽  
pp. 0734242X2110214
Author(s):  
Rahul Rajak ◽  
Ravi Kumar Mahto ◽  
Jitender Prasad ◽  
Aparajita Chattopadhyay
Keyword(s):  
Tamil Nadu ◽  
Waste Treatment ◽  
Gap Analysis ◽  
Uttar Pradesh ◽  
Medical Waste ◽  
Government Organizations ◽  
Central Pollution Control Board ◽  
Treatment Facilities ◽  
The Government ◽  
Novel Coronavirus

Considering the widespread transmission of Coronavirus disease (COVID-19) globally, India is also facing the same crisis. As India already has inadequate waste treatment facilities, and the sudden outbreak of the COVID-19 virus has led to significant growth of Bio-medical waste (BMW), consequently safe disposal of a large quantity of waste has become a more serious concern. This study provides a comprehensive assessment of BMW of India before and during the COVID-19 pandemic. Additionally, this article highlights the gaps in the implementation of BMW rules in India. This study uses various government and non-government organizations, reports and data specifically from the Central Pollution Control Board (CPCB). The finding of the study demonstrated that most of the States/Union Territories (UTs) of India are lacking in terms of COVID-19 waste management. India has generated over 32,996 mt of COVID-19 waste between June and December 2020. During this period, Maharashtra (789.99 mt/month) is highest average generator of COVID-19 waste, followed by Kerala (459.86 mt/month), Gujarat (434.87 mt/month), Tamil Nadu (427.23 mt/month), Uttar Pradesh (371.39 mt/month), Delhi (358.83 mt/month) and West Bengal (303.15 mt/month), and others respectively. We draw attention to the fact that many gaps were identified with compliance of BMW management rules. For example, out of all 35 States/UTs, health care facilitates (HCFs), only eight states received authorization as per BMW management rules. Moreover, the government strictly restricted the practice of deep burials; however, 23 States/UTs are still using the deep burial methods for BMW disposal. The present research suggests that those States/UTs generated on an average of 100 mt/month COVID-19 waste in the last 7 months (June–December 2020) should be considered as a high priority state. These states need special attention to implement BMW rules and should upgrade their BMW treatment capacity.

scholarly journals Experimental investigation of domestic micro-CHP based on the gas boiler fitted with ORC module

2016 ◽  
Vol 37 (3) ◽  
pp. 79-93 ◽  
Author(s):  
Jan Wajs ◽  
Dariusz Mikielewicz ◽  
Michał Bajor ◽  
Zbigniew Kneba
Keyword(s):  
Energy Demand ◽  
Electricity Generation ◽  
Electric Energy ◽  
Organic Rankine Cycle ◽  
Rankine Cycle ◽  
Future Generation ◽  
Working Fluid ◽  
Ethanol Vapour ◽  
System User ◽  
Generation Unit

AbstractThe results of investigations conducted on the prototype of vapour driven micro-CHP unit integrated with a gas boiler are presented. The system enables cogeneration of heat and electric energy to cover the energy demand of a household. The idea of such system is to produce electricity for own demand or for selling it to the electric grid – in such situation the system user will became the prosumer. A typical commercial gas boiler, additionally equipped with an organic Rankine cycle (ORC) module based on environmentally acceptable working fluid can be regarded as future generation unit. In the paper the prototype of innovative domestic cogenerative ORC system, consisting of a conventional gas boiler and a small size axial vapour microturbines (in-house designed for ORC and the commercially available for Rankine cycle (RC)), evaporator and condenser were scrutinised. In the course of study the fluid working temperatures, rates of heat, electricity generation and efficiency of the whole system were obtained. The tested system could produce electricity in the amount of 1 kWe. Some preliminary tests were started with water as working fluid and the results for that case are also presented. The investigations showed that domestic gas boiler was able to provide the saturated/superheated ethanol vapour (in the ORC system) and steam (in the RC system) as working fluids.

scholarly journals Rx For Medical Waste

2000 ◽  
Vol 122 (09) ◽  
pp. 52-56
Author(s):  
Michael Valenti
Keyword(s):  
Waste Treatment ◽  
Waste Incineration ◽  
Water Systems ◽  
Medical Waste ◽  
Hospital Workers ◽  
Medical Centers ◽  
Treatment Technologies

This article reviews many hospitals and medical centers have found it more economical to replace their on-site incinerators with alternative waste treatment technologies, primarily microwave systems or steam autoclaves, or send waste to treatment companies that are equipped with disinfection technologies. Sanitec International Holdings of West Caldwell, NJ, illustrates the in roads that alternatives are making to medical waste incineration. The entire Sanitec disinfection system is enclosed in all-weather steel housing, and is connected to the hospital’s electrical and water systems. Hospital workers bring collected waste in carts to the automated lift and load system, which raises the cart and empties it into the infeed hopper. The MediWaste system at Laredo is designed to treat up to 200 pounds of material per hour, which is more than sufficient to treat the 700 to 800 pounds of waste generated per day. Although incineration alternatives appear to be gaining popularity, combustion is still used to disinfect and reduce much clinical waste.

scholarly journals Medical waste treatment scheme selection based on single-valued neutrosophic numbers

2021 ◽  
Vol 6 (10) ◽  
pp. 10540-10564
Author(s):  
Jie Ling ◽  
◽  
Mingwei Lin ◽  
Lili Zhang ◽  
◽  
...  
Keyword(s):  
Waste Treatment ◽  
Medical Waste ◽  
Selection Problem ◽  
Infected People ◽  
Treatment Scheme ◽  
Medical Supplies ◽  
Maclaurin Symmetric Mean ◽  
Scheme Selection ◽  
Mean Function

<abstract> <p>With the rapid increase in the number of infected people in COVID-19, medical supplies have been increasing significantly. Medical waste treatment scheme selection may have long-term impacts on the economy, society, and environment. Determining the best treatment option is a considerable challenge. To solve this problem, in this paper, we proposed a multi-criteria group decision making (MCGDM) method based on single-valued neutrosophic numbers and partitioned Maclaurin symmetric mean (PMSM) operator. Because of the complexity of the medical waste treatment scheme selection problem, the single-valued neutrosophic numbers are applied to express the uncertain evaluation information. For the medical waste treatment scheme selection problem, the factors or criteria (these two terms can be interchanged.) in the same clusters are closely related, and the criteria in different clusters have no relationships. The partitioned Maclaurin symmetric mean function can handle these complicated criterion relationships. Therefore, we extend the PMSM operator to process the single-valued neutrosophic numbers and propose the single-valued neutrosophic partitioned Maclaurin symmetric mean (SVNPMSM) operator and its weighted form (SVNWPMSM). Then, we analyze their properties and give typical examples of the proposed operators. An MCGDM model based on the SVNWPMSM aggregation operator is developed and applied to solve the medical waste treatment scheme selection problem. Finally, the validity and superiority of the developed model are verified by comparing it with the previous methods.</p> </abstract>

scholarly journals Analysis of a novel solar electricity generation system using cascade Rankine cycle and steam screw expander

2016 ◽  
Vol 165 ◽  
pp. 627-638 ◽  
Author(s):  
Jing Li ◽  
Pengcheng Li ◽  
Gang Pei ◽  
Jahan Zeb Alvi ◽  
Jie Ji
Keyword(s):  
Electricity Generation ◽  
Rankine Cycle ◽  
Generation System ◽  
Solar Electricity
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