scholarly journals Methane and Hydrogen Production from Anaerobic Fermentation of Municipal Solid Wastes-Classification and Characterization based on Fat/Carbohydrate Balance-

2011 ◽  
Vol 40 (3) ◽  
pp. 159-166
Author(s):  
Takuro KOBAYASHI ◽  
Dong-Yeol LEE ◽  
Kaiqin XU ◽  
Yu-You LI ◽  
Yuhei INAMORI
2022 ◽  
Author(s):  
Gabriele Centi ◽  
Alessia Borgogna ◽  
Gaetano Iaquaniello ◽  
Siglinda Perathoner ◽  
Annarita Salladini

2000 ◽  
Vol 41 (3) ◽  
pp. 25-32 ◽  
Author(s):  
M. Okamoto ◽  
T. Miyahara ◽  
O. Mizuno ◽  
T. Noike

The purpose of this study is to investigate the biological hydrogen production potential of individual organic fraction of municipal solid wastes (OFMSW) by batch experiments. Seven varieties of typical organic solid wastes including rice, cabbage, carrot, egg, lean meat, fat and chicken skin were selected to estimate the hydrogen production potential. Among the OFMSW, carbohydrate produced the most hydrogen through biological hydrogen fermentation compared with proteins or lipids. Subsequently, the biological hydrogen production potentials of some individual carbohydrate were measured: cabbage, 26.3–61.7 mL/g-VS; carrot, 44.9–70.7 mL/g-VS; and rice, 19.3–96.0 mL/g-VS. The hydrogen percentages of the total biogas produced from cabbage, carrot and rice were 33.9–55.1%, 27.7–46.8% and 44.0–45.6%, respectively.


Author(s):  
Li Yan ◽  
Yingfang Li ◽  
Bo Yang ◽  
Mohammad Reza Farahani ◽  
Wei Gao

1994 ◽  
Vol 30 (12) ◽  
pp. 125-132 ◽  
Author(s):  
C. Sans ◽  
J. Mata-Alvarez ◽  
F. Cecchi ◽  
P. Pavan

The production of volatile fatty acids (VFA) by anaerobic fermentation of municipal solid wastes was studied at pilot-plant level. A plug-flow reactor (80 1 total volume) without solid or liquid recirculation was employed to digest a mixture of two types of organic fraction of the municipal solid waste (OFMSW): OFMSW mechanically selected and OFMSW coming from a market of fruit and vegetables. The acidogenic process was studied at different retention times (between 2 and 6 days) in the mesophilic (37° ± 2°C) range of temperature. The VFA concentration obtained in the first valve of the tubular reactor ranged from 9.1 to 13.4 g 1−1 and in the outlet sludge oscillated between 11.8 and 23.1 g 1−1, increasing when increasing retention time from 2 to 6 days. A mathematical model of a continuous steady state plug-flow reactor proposed in a previous paper was used to represent the VFA production obtained experimentally. The results obtained when fitting the mathematical model with the experimental results were not sufficiently good. Some modifications of the initial model were considered. The best fitting of the results was obtained when the inhibition effect of the fermentation product on microorganisms growth was taken into account. The errors of this fitting, calculated by least squares, can be considered optimal for retention times between 4 and 6 days, while at shorter retention times the inhibition effect of pH and product makes the volatile acid production lower than the values obtained experimentally.


2005 ◽  
Vol 44 (10) ◽  
pp. 3412-3418 ◽  
Author(s):  
David Bolzonella ◽  
Francesco Fatone ◽  
Paolo Pavan ◽  
Franco Cecchi

2020 ◽  
Vol 5 (4) ◽  
pp. 202-209
Author(s):  
Alexander Topal ◽  
◽  
Iryna Holenko ◽  
Luidmyla Haponych ◽  
◽  
...  

For the municipal solid waste (MSW) to be used in a proper way, it is necessary to implement clean technologies capable of thermal treatment of MSW and RDF in order to produce heat and electricity while meeting current ecological requirements. Nowadays, a number of technologies for MSW/RDF thermal treating are being used worldwide. Among them, the most proven technologies, applicable for industrial introduction, have been considered while analyzing their advantages/ disadvantages accounting for local conditions of Ukraine.


1997 ◽  
Vol 35 (8) ◽  
pp. 231-238 ◽  
Author(s):  
Tay Joo Hwa ◽  
S. Jeyaseelan

Conditioning of sludges improves dewatering characteristics and reduces the quantity of sludge to be handled. Anaerobic digested sludge collected from a sewage treatment plant contained 1.8% to 8% oil. The increase of specific resistance and capillary suction time (CST) with increasing oil content observed in these samples indicates the interference of oil in dewatering. It has been found that addition of municipal solid wastes incinerator fly ash decreases the specific resistances and capillary suction times of oily sludges rapidly up to 3% dosage. Beyond 3% fly ash, the decrease is less significant and the solids content in the sludge cake increases. This optimum dosage remains the same for sludges with varying oil contents from 1.8% to 12%. The total suspended solids of filtrate decreases with fly ash dosage but the toxic concentrations of heavy metals increases considerably. However at the optimum dosage of 3%, concentrations of heavy metals are within the limits for discharging into the sewers. The correlations of CST with the dewatering characteristics such as specific resistance, filter yield and corrected filter yield are established. These correlations can be used to obtain a quick prediction on dewaterability.


Sign in / Sign up

Export Citation Format

Share Document