scholarly journals Assessing pretreated municipal solid waste degradation by BMP and fibre analysis

2019 ◽  
Author(s):  
Asif Siddiqui
Keyword(s):  
Municipal Solid Waste ◽  
Solid Waste ◽  
Waste Degradation ◽  
Fibre Analysis

Influence of Codisposal of Municipal Solid Waste and Olive Vegetation Water on the Anaerobic Digestion of a Sanitary Landfill

1993 ◽  
Vol 27 (2) ◽  
pp. 261-271 ◽  
Author(s):  
R. Cossu ◽  
N. Blakey ◽  
P. Cannas
Keyword(s):  
Municipal Solid Waste ◽  
Solid Waste ◽  
Research Study ◽  
Inhibitory Effect ◽  
Organic Load ◽  
Sanitary Landfill ◽  
Inhibitory Influence ◽  
Vegetation Water ◽  
Waste Degradation ◽  
Very High

A research study was carried out aiming to investigate the possibility of treatment of vegetation water in a anaerobic digester like a sanitary landfill. This vegetation water originates from olive oil production. The results, obtained from lysimeters filled with Municipal Solid Waste, show very high gasification and reduction of the organic load of vegetation water, with no inhibitory effect on waste degradation processes providing the vegetation water is added to an active methanogenic system or buffering the landfill system during the acid phase. The inhibitory influence of compounds, like polyphenols, which can be present in vegetation water in large amounts, has been studied.

Effect of leachate injection modes on municipal solid waste degradation in anaerobic bioreactor

2010 ◽  
Vol 101 (14) ◽  
pp. 5206-5212 ◽  
Author(s):  
H. Benbelkacem ◽  
R. Bayard ◽  
A. Abdelhay ◽  
Y. Zhang ◽  
R. Gourdon
Keyword(s):  
Municipal Solid Waste ◽  
Solid Waste ◽  
Anaerobic Bioreactor ◽  
Waste Degradation ◽  
Injection Modes

scholarly journals Kinetic Constants of Decomposition of the Municipal Solid Waste Prior to and after Mechanical-Biological Processing. Field Scale / Stałe Kinetyczne Rozkładu Zmieszanych Odpadów Komunalnych Przed I Po Mechaniczno-Biologicznym Przetworzeniu. Skala Polowa

2012 ◽  
Vol 38 (4) ◽  
pp. 71-86 ◽  
Author(s):  
Monika Suchowska-Kisielewicz ◽  
Andrzej Jędrczak ◽  
Sylwia Myszograj
Keyword(s):  
Municipal Solid Waste ◽  
Solid Waste ◽  
Decomposition Rate ◽  
Rate Constants ◽  
Biological Treatment ◽  
Field Scale ◽  
Hydrolysis Constant ◽  
Phase Constant ◽  
Waste Degradation ◽  
Systematic Reduction

Abstract One of the major tasks of municipal waste management in European Union countries is the systematic reduction of waste that is removed and transported to landfills. This refers particularly to biodegradable waste. One of the methods employed to decrease waste amount is Mechanical-Biological Treatment (MBT) of the waste, before it is stored. The article presents characteristics of MSW and biologically pre-treated municipal solid waste, organic carbon loads emitted in biogas and leachate during waste deposition in a landfill. Its decomposition rate constants were determined on the basis of modified Zacharof and Butler’s stochastic model. The values of decomposition rate constants determined for MSW had similar change trends to those presented in the literature: the hydrolysis constant had the lowest value (2.6 × 10-5 d-1), the highest acid phase constant (4.1 × 10-4 d-1), while the methane phase constant - 2.2 × 10-4 d-1. The PMSW decomposition rate constants in each anaerobic waste degradation phase had similar change trends, though their values were higher, by 21, 11 and 19%, respectively.

scholarly journals Methane production and bromatological characteristics of the different fractions of organic municipal solid waste

Detritus ◽  
2021 ◽  
pp. 13-23
Author(s):  
Lorena Figueroa-Escamilla ◽  
Simon Gonzalez-Martinez ◽  
Rosalinda Campuzano ◽  
Idania Valdez-Vazquez
Keyword(s):  
Municipal Solid Waste ◽  
Solid Waste ◽  
Mexico City ◽  
Methane Production ◽  
Solid Wastes ◽  
Animal Waste ◽  
Organic Fraction ◽  
Production Rates ◽  
Fruit Waste ◽  
Fibre Analysis

In some countries, garden trimmings are not considered part of urban solid wastes. Lignocellulosic substances contribute to heterogeneity, complicating the analysis of the organic fraction of municipal solid waste (OFMSW) and, subsequently, for methane production. Some of the substances contained in OFMSW are readily biodegradable, and others are not. This work analyses OFMSW from Mexico City and the methane production from its separate components. From OFMSW, nine fractions were visually identified and separated. Including bromatological and fibre analysis, the characterisation of OFMSW and its components was made to determine how the different substances influence methane production. Together, branches, dry leaves, fresh garden trimmings, unsorted wastes (mainly garden trimmings), kitchen paper, and waste vegetables represent 56 % of OFMSW in weight. Fruit waste and unsorted organics contribute to 60 % of the total methane production. Except for branches and dry leaves, methane production increases inversely with the content of lignocellulosic compounds. Animal waste, having the highest concentrations of proteins and lipids and the lowest in lignocellulosic substances, is characterised by the highest level of methane production. Fibre-rich fractions in OFMSW contributed with little or no methane production. Higher concentrations of lignocellulosic substances in the fractions resulted in lower methane production rates.

Simulation of municipal solid waste degradation in aerobic and anaerobic bioreactor landfills

2016 ◽  
Vol 35 (3) ◽  
pp. 301-312 ◽  
Author(s):  
Bhagwan Shamrao Patil ◽  
Agnes Anto C ◽  
Devendra Narain Singh
Keyword(s):  
Municipal Solid Waste ◽  
Solid Waste ◽  
Decomposition Rate ◽  
Bioreactor Landfills ◽  
Anaerobic Bioreactor ◽  
Frequency Domain Reflectometry ◽  
Municipal Solid Waste Landfills ◽  
Treatment And Disposal ◽  
Waste Degradation ◽  
Solid Waste Landfills

Municipal solid waste generation is huge in growing cities of developing nations such as India, owing to the rapid industrial and population growth. In addition to various methods for treatment and disposal of municipal solid waste (landfills, composting, bio-methanation, incineration and pyrolysis), aerobic/anaerobic bioreactor landfills are gaining popularity for economical and effective disposal of municipal solid waste. However, efficiency of municipal solid waste bioreactor landfills primarily depends on the municipal solid waste decomposition rate, which can be accelerated through monitoring moisture content and temperature by using the frequency domain reflectometry probe and thermocouples, respectively. The present study demonstrates that these landfill physical properties of the heterogeneous municipal solid waste mass can be monitored using these instruments, which facilitates proper scheduling of the leachate recirculation for accelerating the decomposition rate of municipal solid waste.

scholarly journals The Impact of Exogenous Aerobic Bacteria on Sustainable Methane Production Associated with Municipal Solid Waste Biodegradation: Revealed by High-Throughput Sequencing

2020 ◽  
Vol 12 (5) ◽  
pp. 1815 ◽  
Author(s):  
Sai Ge ◽  
Jun Ma ◽  
Lei Liu ◽  
Zhiming Yuan
Keyword(s):  
Municipal Solid Waste ◽  
Microbial Communities ◽  
Solid Waste ◽  
Methane Production ◽  
Organic Waste ◽  
High Throughput Sequencing ◽  
Methane Yield ◽  
Aerobic Bacteria ◽  
Waste Degradation ◽  
The Impact

In this work, the impact of exogenous aerobic bacteria mixture (EABM) on municipal solid waste (MSW) is well evaluated in the following aspects: biogas production, leachate analysis, organic waste degradation, EABM population, and the composition of microbial communities. The study was designed and performed as follows: the control bioreactor (R1) was filled up with MSW and the culture medium of EABM and the experimental bioreactor (R2) was filled up with MSW and EABM. The data suggests that the composition of microbial communities (bacterial and methanogenic) in R1 and R2 were similar at day 0, while the addition of EABM in R2 led to a differential abundance of Bacillus cereus, Bacillus subtilis, Staphylococcus saprophyticus, Staphlyoccus xylosus, and Pantoea agglomerans in two bioreactors. The population of exogenous aerobic bacteria in R2 greatly increased during hydrolysis and acidogenesis stages, and subsequently increased the degradation of volatile solid (VS), protein, lipid, and lignin by 59.25%, 25.68%, 60.47%, and 197.62%, respectively, compared to R1. The duration of hydrolysis and acidogenesis in R2 was 33.33% shorter than that in R1. At the end of the study, the accumulative methane yield in R2 (494.4 L) was almost three times more than that in R1 (187.4 L). In addition, the abundance of acetoclasic methanogens increased at acetogenesis and methanogenesis stages in both bioreactors, which indicates that acetoclasic methanogens (especially Methanoseata) could contribute to methane production. This study demonstrates that EABM can accelerate organic waste degradation to promote MSW biodegradation and methane production. Moreover, the operational parameters helped EABM to generate 20.85% more in accumulative methane yield. With a better understanding of how EABM affects MSW and the composition of bacterial community, this study offers a potential practical approach to MSW disposal and cleaner energy generation worldwide.

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