Separate collection of plastic waste, better than technical sorting from municipal solid waste?

2016 ◽  
Vol 35 (2) ◽  
pp. 172-180 ◽  
Author(s):  
Alexander Feil ◽  
Thomas Pretz ◽  
Michael Jansen ◽  
Eggo U Thoden van Velzen
Keyword(s):  
Municipal Solid Waste ◽  
Solid Waste ◽  
Plastic Waste ◽  
Better Than

scholarly journals Evaluation of Maturity and Odor Emissions in the Process of Combined Composting of Kitchen Waste and Garden Waste

2021 ◽  
Vol 11 (12) ◽  
pp. 5500
Author(s):  
Bangxi Zhang ◽  
Feifei Fan ◽  
Chao Guo ◽  
Mingji Yu ◽  
Mingcan Zhao ◽  
...  
Keyword(s):  
Municipal Solid Waste ◽  
Solid Waste ◽  
Kitchen Waste ◽  
Odor Emissions ◽  
Maturity Effect ◽  
Better Than ◽  
Garden Waste

With the development of urbanization, kitchen waste and garden waste have become an important part of municipal solid waste (MSW), which is in urgent need of resource treatment. This study investigated the impacts of garden waste as auxiliary materials on maturity and odor emissions (NH3 and H2S) during kitchen waste composting. The result showed that the combined composting product of kitchen waste and garden waste achieved the maturity effect, and the co-composting effect was better than that of separate composting of kitchen waste. Meanwhile, compared with the separate composting treatment of kitchen waste, the co-composting treatment of kitchen waste and garden waste can effectively reduce the cumulative emissions of H2S by more than 85%, and effectively reduce the cumulative emissions of NH3 by more than 75%. This study provides a technical reference for the green fertilizer utilization of kitchen waste and garden waste.

scholarly journals Separation of virgin plastic polymers and post-consumer mixed plastic waste by sinking-flotation technique

2021 ◽  
Author(s):  
Orlando Washinton Meneses Quelal ◽  
Borja Velázquez-Martí ◽  
Andrés Ferrer Gisbert
Keyword(s):  
Sodium Chloride ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Tap Water ◽  
Pilot Scale ◽  
Complete Separation ◽  
Plastic Waste ◽  
High Density ◽  
Low Density ◽  
Flotation Technique

Abstract The main objective of this research is to separate virgin polymers (PA, PC, PP, HDPE; PS and ABS) and post-consumer plastic waste from municipal solid waste (MSW) using the sinking-flotation technique. The separation was carried out on a pilot scale in a container of 800 l of useful volume with agitation of 160 rpm for one hour. Tap water, ethanol solutions and sodium chloride at different concentrations were used as the densification medium. The virgin polymers were separated into two groups, that is, a group of low-density polymers (HDPE and PP) and a group of high-density polymers (PS, ABS, PA, and PC). Polymers whose density was less than that of the medium solution floated to the surface, while those whose density was greater than that of the medium solution sank to the bottom. The experimental results showed that the complete separation of HDPE from PP was achieved at 23% v/v of ethanol. For the separation of the high-density polymers, up to 40% w / v sodium chloride was used. The recoveries of the polymers ranged from 70 to 99.70%. In post-consumer recycled plastic waste, fractions of 29.6% polyolefins, 37.54% PS, 11% ABS, 8% PA and 12% PC, PET and PVC were obtained. Finally, cast plates were made of the post-consumer waste to improve the identification of the type of polymer present in the separated fractions.

scholarly journals PENGELOLAAN SAMPAH PLASTIK DI SALATIGA: Praktik, dan tantangan

2019 ◽  
Vol 17 (1) ◽  
pp. 90
Author(s):  
Berliana Anggun Septiani ◽  
Dian Mita Arianie ◽  
Via Fide Aditya Andi Risman ◽  
Widhi Handayani ◽  
Istiarsi Saptuti Sri Kawuryan
Keyword(s):  
Waste Management ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Waste Treatment ◽  
Solid Waste Management ◽  
Plastic Waste ◽  
Municipal Solid Waste Management ◽  
Waste Production ◽  
The Government

The increase of solid waste production is a general problem in municipality, particularly of plastic waste. The durability, light-weight, anticorrosiveness, and inexpensiveness properties of plastic make it favorable to be used in daily life, including in Salatiga. However, plastic is one of some non-biodegradable materials that could lead to soil and water pollution as it contains toxic compounds such as aromatic hydrocarbons, phthalates, and organochlorine. Various studies in municipal solid waste management have been conducted. While those studies often applied various approaches separately, researches in regard to the role of stakeholders in municipal solid waste management are very limited. This study aims to explain the plastic waste management in Salatiga based on the role of the corresponding stakeholders. This qualitative study shows that there are four stakeholders who were involved in municipal plastic waste management in Salatiga. They were the households who generate wastes, the scavengers who sorts the wastes, Bank Sampah and collectors who have the same role in order to collect the wastes and treat the plastic wastes through reusing or recycling processes, and the government. Currently, efforts in waste treatment in Salatiga are focused on the system of collecting-tranferring-disposal mode, waste treatment by reuse and recycle processing, and landfilling. Reducing plastic consumption must take into account the sociocultural aspect and environmental awareness, as the people still interested to use plastic instead of using other materials in substitution. Finally, the role of government is central to educate the community in term of sorting activities and reducing waste production, build the capacity of Bank Sampah, and manage the role of scavengers and collectors. Other alternatives include creating synergy between the collectors and Bank Sampah, as well as ensuring final treatment of the unprocessed wastes disposed by collectors and Bank Sampah. 

Plastic Waste Management and Leakage in Latin America and the Caribbean

2020 ◽  
Author(s):  
Amy Brooks ◽  
Jenna Jambeck ◽  
Eliana Mozo-Reyes
Keyword(s):  
Economic Growth ◽  
Latin America ◽  
Waste Management ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Plastic Waste ◽  
Single Use ◽  
Annual Estimate ◽  
The Caribbean ◽  
Business As Usual

As of 2017, 8.3 billion metric tons of plastic had been produced worldwide. Since about 40% is used in things that are thrown away relatively quickly (packaging and single use items), 6.4 billion metric tons had already become discarded materials needing to be managed. Only 9% of these discarded materials were recycled globally. The annual estimate of plastic entering our oceans globally is 5 to 13 million metric tons (MMT) per year. Latin America and the Caribbean (LAC) has an extensive populated coast, 119,000 km of coastline and over 205 million people living within 50 km of that coastline. Waste management infrastructure is still under development in many countries. Economic growth without fully developed infrastructure can lead to increased plastic leakage. This report focuses on municipal solid waste as a source of plastic input into the environment in LAC. The reports estimates that total plastic waste available to enter the ocean in LAC in 2020 was 3.7 MMT . Under business-as-usual projections, the report anticipates that the regional quantity available to enter the oceans in 2030 will be 4.1 MMT and 4.4 MMT in 2050.

Effect of Solvent Cleaning on Thermo-Mechanical and Rheological Properties of Plastic Wastes from Municipal Solid Waste (MSW)

2020 ◽  
Vol 856 ◽  
pp. 230-236
Author(s):  
Laongdaw Techawinyutham ◽  
Wiroj Techawinyutham
Keyword(s):  
Municipal Solid Waste ◽  
Solid Waste ◽  
Rheological Properties ◽  
Loss Modulus ◽  
Tensile Modulus ◽  
Cleaning Process ◽  
Maximum Value ◽  
Plastic Wastes ◽  
Thermal Stability Of ◽  
Better Than

The plastics from municipal solid waste (MSW) were modified to improve cleanness for adding value. The stir and sonication were performed as cleaning processes. Xylene, tetrachloroethylene, chloroform, acetone and toluene were used as solvent cleaning. The most suitable cleaning process was sonication method with cleaning time of 5 min and the appropriate solvent was xylene for washing the plastic wastes for further study in terms of thermo-mechanical and rheological properties. The cleaning process was successful as evidence in thermogravimetric analysis (TGA) results. The properties of new plastics, cleaned plastic wastes and plastic wastes were compared and analyzed. Tensile strength of the specimens from plastic wastes was slightly decreased; however, elongation and impact strength of cleaned plastic wastes and plastic wastes sharply dropped as compared to new plastics. Tensile modulus of cleaned plastic wastes was slightly better than that of new plastics. Thermal stability of plastic waste was slightly lower than that of new plastic. Shear storage modulus (Gʹ), shear loss modulus (Gʺ) and shear viscosity (η) of new plastics showed the maximum value; on the other hand, those properties of cleaned plastic wastes and plastic wastes were similar. The cleaning method with solvent did not destroy thermo-mechanical and rheological properties of the cleaned plastic wastes.

scholarly journals Solid Waste Gasification: Comparison of Single- and Multi-Staged Reactors

2021 ◽  
Author(s):  
Xianhui Zhao ◽  
Kai Li ◽  
Meghan E. Lamm ◽  
Serdar Celik ◽  
Lin Wei ◽  
...  
Keyword(s):  
Climate Change ◽  
Renewable Energy ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Plastic Waste ◽  
Feed Composition ◽  
Advantages And Disadvantages ◽  
Applied Technology ◽  
Waste Gasification

Interest in converting waste into renewable energy has increased recently due to concerns about sustainability and climate change. This solid waste is mainly derived from municipal solid waste (MSW), biomass residue, plastic waste, and their mixtures. Gasification is one commonly applied technology that can convert solid waste into usable gases, including H2, CO, CH4, and CO2. Single- and multi-staged reactors have been utilized for solid waste gasification. Comparison in reactor dimensions, operating factors (e.g., gasification agent, temperature, and feed composition), performance (e.g., syngas yield and selectivity), advantages, and disadvantages are discussed and summarized. Additionally, discussion will include economic and advanced catalysts which have been developed for use in solid waste gasification. The multi-staged reactor can not only be applied for gasification, but also for pyrolysis and torrefaction.

scholarly journals Evaluation the Capability of Isolated Bacteria from Stabilized Compost for Bioremediation of Pyrene and Phenanthrene from Contaminated Soil with Municipal Solid Waste Leachate

2019 ◽  
Author(s):  
Masoume Javaheri ◽  
Mehdi Mokhtati ◽  
Mohammad Reza Samaei ◽  
Samane Sedighi Khavidak ◽  
Farimah Shamsi ◽  
...  
Keyword(s):  
Municipal Solid Waste ◽  
Solid Waste ◽  
Growth Kinetics ◽  
Statistical Significance ◽  
Degrading Bacteria ◽  
Polycyclic Aromatic ◽  
Kinetics Of ◽  
One Way Anova ◽  
Waste Leachate ◽  
Better Than

Introduction: Pyrene and phenanthrene are polycyclic aromatic hydrocarbons (PAHs) are priority pollutants. The aim of this study was to investigate the ability of isolated bacteria from stabilized compost‌ for biodegradation of pyrene and phenanthrene from soil contaminated with municipal solid waste leachate. Materials and Methods: In this study, phenanthrene and pyrene were selected as priority PAHs pollutants. The degrading bacteria of these compounds were isolated from the stabilized compost and their ability to remove different concentrations of pyrene and phenanthrene investigated. The remaining concentrations of pyrene and phenanthrene were measured by GC-MS. The growth kinetics of bacteria were also studied using a spectrophotometer at 595-nm wavelength. One-way ANOVA was used to determine the statistical significance and plot the related curves, and the Excel software and SPSS version 24 to do statistical analysis. Results: The most potent bacteria in removing pyrene and phenanthrene were Paenibacillus and Bacillus, respectively. The concentrations to be studied were determined as 10, 25, 40 and 55 μg/kg according to the concentrations of PAHs in the soil contaminated with municipal solid waste leachate. At constant temperature of 30 °C after 30 days at these concentrations, the removal efficiency was, respectively, 96.3%, 83%, 77.8%, and 72.4% for pyrene and 100%, 99.6%, 95.9%, and 94.6% for phenanthrene. The growth kinetics of phenanthrene-exposed bacteria were better than those of pyrene-exposed bacteria. Conclusion: The results show that bacteria in stabilized compost are able to remove pyrene and phenanthrene. The bacteria of the highest efficiency for removal of pyrene and phenanthrene are Paenibacillus and Bacillus, respectively.

scholarly journals Solid municipal waste: collection and disposal issues

2020 ◽  
Vol 7 (1) ◽  
Author(s):  
Oksana Ivanova ◽  
Natalya Gorbina
Keyword(s):  
Municipal Solid Waste ◽  
Solid Waste ◽  
Federal District ◽  
Environmental Problems ◽  
Plastic Waste ◽  
Municipal Waste ◽  
Game Form ◽  
Solid Municipal Waste ◽  
Ecological Culture ◽  
The Impact

The main goal of the work is to review the state of the environmental situation as a result of the generation of municipal solid waste. The theoretical and methodological basis for studying the presented question is based on the basic principles and works of scientists and researchers in the field of environmental problems through the impact of waste on the environment in the world community. On the basis of the research methods used, the territorial features of the generation of production and consumption wastes from treatment facilities are revealed in the context of the constituent entities of the Russian Federation. An international comparison allows us to conclude that in European countries the main focus is on waste from the perspective of a strategic resource and most of it is recyclable. The article identifies groups of territorial units according to the Central Federal District, as the most populated region of the country, by the amount of solid municipal waste disposed of per year per capita. The authors pay attention to the issue of accumulation of plastic waste in the structure of municipal solid waste and emphasize their harmful effects on nature and human health. Based on international experience, the emphasis is placed on the fact that in most developed economic countries in the last decade a method of sorting waste by fractions is widely introduced. The presence of the indicated questions confirms the hypothesis of separate garbage collection in solving environmental problems. Recommendations are given on the separate collection of plastic waste in a game form with the name "Fun Plastic". The stages of the implementation of the idea are identified and the aspects of not only the ecological format, but also the formation of the ecological culture are indicated.

Sign in / Sign up

Export Citation Format

Share Document