Novel green approaches towards utilization of flower waste: A review

Floriculture has been associated with culture and heritage since very ancient time in our country. According to Tata Energy Research Institute (TERI), the waste generation rate in India is increasing at the rate of 1.0 -1.33 per cent annually. In most of the developing countries like India, the floral waste generation occurs largely during worships, festivals, ceremonies etc. from temples, mosque, flower market, flower exhibition and wedding halls find their way into the garbage as a waste causing various environmental problems. This paper discusses the use of solid state fermentation to convert floral wastes into a variety of value-added products like as compost, biogas, bioethanol, dyes, food products, biosurfactants production, incense sticks and handmade paper production etc. and floral waste can thus be converted into wealth.

Analysis of waste processing potential in Gunung Putri District, Bogor Regency

The increase in waste generation in Gunung Putri Subdistrict, Bogor Regency, causes an increased burden at the Landfill Site (TPA). One of the efforts to reduce the burden of Landfill Site (TPA) is to maximize the Waste Processing Site (TPS) by applying the circular economy concept. This study aims to analyze the generation, composition, and potential of waste processing to have economic value. The sampling method used is a combination of purposive sampling and stratified random sampling. The results showed that with a population of 304,672 people and a waste generation rate of 0.48 kg/person/day, it is estimated that the waste generation in Gunung Putri District is 147,156.58 kg/day. The waste material in Gunung Putri Subdistrict consists of 52.86% organic waste components and 47.14% non-organic waste. Organic waste is dominated by food waste by 50.38%. From the results of the characteristic test of the waste, it is known that the water content is 63.16%, the ash content is 29%, the C/N ratio is 7.03%, and the calorific value of the waste is 1.924 kcal/kg by considering the amount of generation, composition, and characteristics of waste, which are then used with standards or criteria for waste processing technology from various references. Organic waste in Gunung Putri Subdistrict has good potential to be processed using the Black Soldier Fly (BSF) and organic waste processing with Peuyeumisasi Method (Biodrying) and recycling for non-organic waste.

A comparative study on generation and composition of food waste in Kundasang, Sabah

In this era, we are facing a very troublesome problem, and that is food waste. Food wastage started happening decades ago and is still happening today. This not only comes from large-scale food and beverage production but, unfortunately, also comes from people’s behavior. Which had made the research to study the generation and composition of food waste in Kundasang, Sabah and identify the awareness of food waste management. the collection of the food waste involved in residential and commercial and then, divide into two types which are cooked and uncooked food waste. As a result, the food waste generated from the commercial was more than residential area. Then, the food waste generation rate for every person is 0.14 kg/person/day. Most of the people in Kundasang know about food waste management but they do not know the proper way to manage the food waste but 64 % of them, interest to involve minimize the food waste in the future. Knowledge and skills can be spread among family residents through sports and awareness activities related to food management. In short, appropriate methods should be introduced to overcome the restrictions on the residents of Kundasang’s households to minimize food waste.

Recycling disposable bamboo chopstick waste as a renewable energy resource: Case study in Khon Kaen University, Thailand

This study focused on elucidating disposable bamboo chopstick (DBC) waste generation rate and identifying the appropriate carbonization temperature for recycling DBC waste as a renewable energy resource. A survey was conducted within the study area of Khon Kaen University (KKU). Of the student population of approximately 40,000, the questionnaire was completed by 470 students. The survey revealed a bamboo chopstick utilization rate equivalent to 0.46 pairs person− 1 d− 1. A carbonization process wit 1-h was carried out at 650 and at 900 °C to compare the quality of charcoal recycled from DBC (DBC charcoal). The DBC charcoal prepared at 650 °C was of a higher quality for use as fuel compared to 900 °C prepared DBC charcoal; with 5.3 times higher BET surface area (62 × 103 m2 kg− 1), 5% higher thermal efficiency (31%), 15 times higher hydrogen (H) content (1.9% of total mass content), and 1.0 MJ kg− 1 higher heating values by bombs calorimeter (32.8 MJ kg− 1). The utilization of DBC charcoal as the biomass fuel in gasification for electricity generation could produce 0.0395% of KKU consumption energy which was estimated to reduce CO2 emission by 12.9 t CO2 yr− 1 as well as waste generation at 43.7 t yr− 1 or 0.399% around KKU area.

Medical laboratory waste generation rate, management practices, and associated factors in Addis Ababa, Ethiopia

Background: Biomedical wastes (BMW) generated from medical laboratories are hazardous and can be deleterious to humans and the environment. Highly infectious types of biomedical wastes are commonly generated at an unacceptably high rate from health laboratories of developing countries with a poor management system like Ethiopia. This study was aimed to evaluate the generation rate of biomedical wastes, management practices, and associated factors among public healthcare medical laboratories in Addis Ababa, Ethiopia. Materials and methods: A Health institution-based cross-sectional study was conducted from July 13 to September 25, 2020, in 6 hospital laboratories and 20 health center laboratories in Addis Ababa, Ethiopia. Data on socio-demographic characteristics, knowledge, and practice of biomedical waste management of the health facilities, Biomedical waste generation rate were collected using data collection tools. Data were managed using SPSS version 20 software. Descriptive statistics, Pearson correlation, linear and logistic regression analysis were computed to identify independent predictors of the dependent variable. An Odds ratio with a 95% confidence interval was used to determine the strength of association. Results: The finding revealed that the mean plus or minus SD of the daily generation rate of biomedical wastes was 4.9 plus or minus 3.13 kg/day per medical laboratory. Nineteen (74.3%) medical laboratories had a proper practice of biomedical waste management which is significantly associated with knowledge of professionals on biomedical waste management policies and guidelines, availability of separate financial sources for biomedical waste management, and training level of professionals. Conclusion: The study showed a high generation of biomedical waste from medical laboratories in public healthcare in Addis Ababa, Ethiopia. Near two-thirds of health facilities had a proper practice of waste segregation, collection, storage, and treatment of biomedical wastes generated from their laboratory. However, there was a poor practice of transportation and disposal. Hence, due attention and practicing as per the current national guidelines of biomedical waste management is recommended.

Improving Concrete Waste Rate Generation of Structure Projects in Leading Construction Firm in Indonesia

The Construction and Demolition (C&D) industry is very close to various waste management issues as the generation of waste is inevitable in every construction. In Indonesia, to make an applicable implementation of C&D Waste Management, the improvement must be made by looking into the actual field process. The improvement uses DMAIC as the lean tools and VSM to state the current process of material from its delivery on the site into a waste. Waste that is being monitored is the most used materials in the case study project which are concrete. A notable project was taken for the study as it will help other structure projects to imitate the down-to-earth future state, aiming at the reduction of waste generation rate and also business process improvement. The result shows that the process of concrete from orders to waste took eight steps, and three of them are improved, producing 3% lesser waste from the current state. The best scenario WGR were analyzed to also answer the stakeholder interest within the case study.

Face Mask Consumption and Medical Waste Generation During the COVID-19 Pandemic in Iran: Challenges and Problems

Background: The outbreak of COVID-19 has caused a devastating pandemic scenario in the world. The mortality rate has increased and new socio-economic challenges are emerging. Millions of gloves, gowns, face masks, and face shields are used daily to prevent airborne transmission and facilitate the treatment of COVID-19. Mismanagement of these wastes can lead to increased concerns due to their contamination potential. A comprehensive plan to improve the management of medical wastes in every country requires awareness of the current status of solid waste. As a result, the study aimed to calculate and estimate the consumption rate of face masks and medical waste generation rate during the COVID-19 pandemic in Iran. Also, the performance of different departments of medical waste management and future challenges are discussed. Methods: The daily consumption of face masks and medical waste generation were calculated based on the population data, the percentage of the urban population, face mask acceptance rate, the number of face masks needed per person per day, total COVID-19 confirmed cases, and medical waste generation rate (kg/bed/day). Results: The consumption of face masks in Iran is estimated at 46576000 pieces per day. Also, the three provinces of Tehran (9,560,000 pieces), Khorasan Razavi (3,825,600 pieces), and Isfahan (3,523,200 pieces) have the highest consumption rate of masks, respectively. Increasing the number of confirmed COVID-19 cases has increased the medical waste generation rate. Until April 3, 2021, more than 1,920,394 cases of COVID-19 have been confirmed in Iran, and calculations show that the medical waste generation rate in Iran is about 7,585.56 tons per day. Conclusions: COVID-19 is a highly infectious and problematic disease. The continuous increase in the number of confirmed COVID-19 cases has increased face mask consumption rate and medical waste generation rate, and as a result, new challenges have emerged in the field of solid waste management. These emerging challenges in managing solid waste during the COVID-19 pandemic necessitate the development of appropriate waste management policies and strategies.

Rapid Composting Potential of Black Solider Fly Larvae: A Review

Population boom and excessive resource consumption lead to increased waste generation rate, which in turn requires faster and better ways of handling wastes. Composting has been one of the popular conventional methods of managing organic wastes. Black soldier fly is one of the alternative ways to effectively manage the wastes, without any hassle, while maintaining the economy and leaving a lesser carbon footprint in the atmosphere. This paper presents a concise yet to the point review on the black soldier fly and composting with it. It gives an account of different cases where the larvae are used in degrading wastes. Thus, the present study emphasizes the huge potential of the use of larvae in dealing with organic wastes and also imposes on the added perks and benefits.

Prevalent Practices of Solid Waste Management in the Girls Hostels

Waste is generated on daily basis through different activities of human beings, which leads to pollution of the environment, which may have serious implications on the health of the individual. Waste generation is also a big problem in schools and universities. To keep that problem in mind study has been conducted on the campus of CCSHAU, Hisar; with the objective to study the type and volume of waste generated in the girl’s hostels. The study estimated the daily waste generation from girl’s hostels and found waste generation rate was high but the waste collection rate was very low because of the improper ratio between the total number of students and sanitary worker. The waste management system in the university girl’s hostels requires not only an estimation of the solid waste but also an understanding of the students’ habits and behaviour towards managing solid waste.