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.

Bio-oil production via catalytic microwave pyrolysis of model municipal solid waste component mixtures

RSC Advances ◽  
2015 ◽  
Vol 5 (71) ◽  
pp. 57619-57631 ◽  
Author(s):  
Dadi V. Suriapparao ◽  
R. Vinu
Keyword(s):  
Municipal Solid Waste ◽  
Solid Waste ◽  
Energy Recovery ◽  
Oil Production ◽  
Microwave Pyrolysis ◽  
Microwave Assisted ◽  
Paraffin Oil ◽  
Bio Oil ◽  
Garden Waste

Microwave assisted co-pyrolysis of model MSW components such as cellulose, paraffin oil, garden waste and kitchen wastes reveals the potential to tailor the oil yields, their quality and energy recovery using different susceptors.

Effects of inoculation amount and application method on the biodrying performance of municipal solid waste and the odor emissions produced

2019 ◽  
Vol 93 ◽  
pp. 91-99
Author(s):  
Jing Yuan ◽  
Difang Zhang ◽  
Ruonan Ma ◽  
Guoying Wang ◽  
Yun Li ◽  
...  
Keyword(s):  
Municipal Solid Waste ◽  
Solid Waste ◽  
Application Method ◽  
Odor Emissions

scholarly journals Physical components and influence factors of municipal solid waste (MSW) in the residential area of Beijing

2019 ◽  
Vol 118 ◽  
pp. 04012
Author(s):  
Hongyu Zhang ◽  
Guiqin Wang ◽  
Yaxuan Bai ◽  
Rihui Chen ◽  
Li Zhang
Keyword(s):  
Municipal Solid Waste ◽  
Solid Waste ◽  
Family Income ◽  
Great Influence ◽  
Residential Area ◽  
Kitchen Waste ◽  
Beijing Area ◽  
Educational Backgrounds ◽  
The Family ◽  
Building Area

The treatment, disposal and management of municipal solid waste strongly depend on the composition and characteristics of municipal solid waste. The Physical composition of MSW and its influencing factors were investigated and analyzed in the residential of Beijing area. The result showed that the composition of MSW in four seasons was similar, and the kitchen was the main composition of MSW, accounting for 69-74% of the total amount of MSW. The average age of families, educational backgrounds, family income and building area have a great influence on the physical proportion of MSW. As the average age of the family increases, the proportion of other wastes was gradually reduced, the proportion of the harmful waste was increased. With the increase of educational backgrounds and family income, the content of kitchen waste decreased, while the content of recyclable waste increased obviously. The 50 square meters was used as a dividing point for the residential area of the family, the kitchen waste decreased at first and then increased, while the proportion of disposable packaging and other waste increases at first and then decreases with the increase of building area.

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

Municipal Solid Waste Management Practice in China - A Case Study in Hangzhou

2014 ◽  
Vol 878 ◽  
pp. 23-29
Author(s):  
Jing Ying Ma ◽  
Jian Yi Zhan ◽  
Yue Jun Zhang
Keyword(s):  
Waste Management ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Hazardous Waste ◽  
Solid Waste Management ◽  
Source Separation ◽  
Capital City ◽  
Comprehensive Treatment ◽  
Municipal Solid Waste Management ◽  
Kitchen Waste

The management of municipal solid waste (MSW) in China is facing urgent problems with rapid industrialization and urbanization. This article focused on the status of Hangzhou, capital city of Zhejiang province, China. The regulations, policies, implementation, barriers and solutions about source separation, separate collection, clean & direct transportation, treatment and disposal were introduced. Source separation, separate collection and clean & direct transportation were seriously carried out from 2010. MSW was classified into four kinds, such as kitchen waste, hazardous waste, recyclable waste and other waste. Four kinds of wastes were collected, transported, treated and disposed, respectively. At the same time, a questionnaire survey was conducted in 2011 on 200 households in Xiasha and Gongshu Districts in Hangzhou. The results indicate that many citizens cannot effectively and correctly separated different kinds of solid wastes. Kitchen waste was directly disposed in landfill, because there is no composting plant in Hangzhou City. The collection of recoverable waste and hazardous waste was not in control of municipal solid waste management (MSWM) system. In order to optimize MSWM system in Hangzhou, the government and the citizen must make efforts in source separation, comprehensive treatment system, effective regulations and policies.

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 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.

Ventilation, Turning and Additive Effects on Odor Emissions and Municipal Solid Waste (MSW) Bio-Drying

2013 ◽  
Vol 448-453 ◽  
pp. 564-569
Author(s):  
Xian Ming Cai ◽  
Chun Ping Li ◽  
Xia Qin ◽  
Hong Yu Zhang
Keyword(s):  
Moisture Content ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Additive Effects ◽  
Turning Process ◽  
Biochemical Reactions ◽  
Odor Emissions

A series of biological drying and odor emissions experiments of municipal solid waste (MSW) was made by using independently developed biological drying device. . The results show that: Ventilation increasing contributes to the loss of water and reduction of H2S emission, as well as conducive to biochemical reactions. Additives of T2 and T4 can significantly reduce the emission of H2S and additives of T2 and T3 can significantly reduce the emission of NH3, thus, T2 can preferably chose as biodrying deodorant. Turning process has a certain impact on the biodrying product moisture content, moisture content decreases with the increase of turning times, the moisture of final biodrying product reached 25% when turning twice, reached 22.5% when turning 3 times and, reached 19.1% when turning 4 times. Thus, increase the turning times can significantly reduce moisture content.

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