Thermodynamic evaluation of process to obtain charcoal from the slow pyrolysis of babassu coconut

2017 ◽  
Author(s):  
Francisco Everton Tavares de Luna ◽  
Laionel Guedes ◽  
Herculano Telino Macau ◽  
Rennan Jackson Ferreira Macedo
Keyword(s):  
Thermodynamic Evaluation ◽  
Slow Pyrolysis

Thermodynamic evaluation of the systems Cu-Si, Mg-Ni, Si-Sn and Si-Zn

1993 ◽  
Vol 90 ◽  
pp. 167-173 ◽  
Author(s):  
MHG Jacobs ◽  
PJ Spencer
Keyword(s):  
Thermodynamic Evaluation

Surface interaction of sweet potato peels (Ipomoea batata) with Cd(II) and Pb(II) ions in aqueous medium

2019 ◽  
Author(s):  
Chem Int
Keyword(s):  
Aqueous Medium ◽  
Sweet Potato ◽  
Adsorption Process ◽  
Low Cost ◽  
Correlation Coefficients ◽  
Order Kinetic ◽  
Thermodynamic Evaluation ◽  
Dissociative Mechanism ◽  
Pseudo Second Order ◽  
Potato Peels

The removal of Cd(II) and Pb(II) ions from aqueous medium was studied using potato peels biomass. The adsorption process was evaluated using Atomic Absorption Spectrophotometer (AAS). The Vibrational band of the potato peels was studied using Fourier Transform Infrared Spectroscopy (FTIR). The adsorption process was carried out with respect to concentration, time, pH, particle size and the thermodynamic evaluation of the process was carried at temperatures of 30, 40, 50 and 60(0C), respectively. The FTIR studies revealed that the potato peels was composed of –OH, -NH, –C=N, –C=C and –C-O-C functional groups. The optimum removal was obtained at pH 8 and contact time of 20 min. The adsorption process followed Freundlich adsorption and pseudo second-order kinetic models with correlation coefficients (R2) greater than 0.900. The equilibrium adsorption capacity showed that Pb(II) ion was more adsorbed on the surface of the potato peels biomass versus Cd (II) ion (200.91 mg/g > 125.00 mg/g). The thermodynamic studies indicated endothermic, dissociative mechanism and spontaneous adsorption process. This study shows that sweet potato peels is useful as a low-cost adsorbent for the removal of Cd(II) and Pb(II) ions from aqueous medium.

A thermodynamic evaluation of the FeCoCr system

Calphad ◽  
1981 ◽  
Vol 5 (4) ◽  
pp. 227-237 ◽  
Author(s):  
C. Allibert ◽  
C. Bernard ◽  
G. Effenberg ◽  
H.-D. Nüssler ◽  
P.J. Spencer
Keyword(s):  
Thermodynamic Evaluation

scholarly journals State-of-the-Art Char Production with a Focus on Bark Feedstocks: Processes, Design, and Applications

Processes ◽  
2021 ◽  
Vol 9 (1) ◽  
pp. 87
Author(s):  
Ali Umut Şen ◽  
Helena Pereira
Keyword(s):  
State Of The Art ◽  
Lignocellulosic Materials ◽  
Heating Rates ◽  
Production Methods ◽  
Slow Pyrolysis ◽  
Production Studies ◽  
Lignocellulosic Feedstocks ◽  
Thermochemical Method ◽  
Superior Surface ◽  
First Time

In recent years, there has been a surge of interest in char production from lignocellulosic biomass due to the fact of char’s interesting technological properties. Global char production in 2019 reached 53.6 million tons. Barks are among the most important and understudied lignocellulosic feedstocks that have a large potential for exploitation, given bark global production which is estimated to be as high as 400 million cubic meters per year. Chars can be produced from barks; however, in order to obtain the desired char yields and for simulation of the pyrolysis process, it is important to understand the differences between barks and woods and other lignocellulosic materials in addition to selecting a proper thermochemical method for bark-based char production. In this state-of-the-art review, after analyzing the main char production methods, barks were characterized for their chemical composition and compared with other important lignocellulosic materials. Following these steps, previous bark-based char production studies were analyzed, and different barks and process types were evaluated for the first time to guide future char production process designs based on bark feedstock. The dry and wet pyrolysis and gasification results of barks revealed that application of different particle sizes, heating rates, and solid residence times resulted in highly variable char yields between the temperature range of 220 °C and 600 °C. Bark-based char production should be primarily performed via a slow pyrolysis route, considering the superior surface properties of slow pyrolysis chars.

scholarly journals Effect of slow pyrolysis conditions on biocarbon yield and properties: Characterization of the volatiles

2021 ◽  
pp. 125567
Author(s):  
B. Babinszki ◽  
Z. Sebestyén ◽  
E. Jakab ◽  
L. Kőhalmi ◽  
J. Bozi ◽  
...  
Keyword(s):  
Slow Pyrolysis ◽  
Properties Characterization

scholarly journals Assessment of the fertilizer potential of biochars produced from slow pyrolysis of biosolid and animal manures

2021 ◽  
Vol 155 ◽  
pp. 105043
Author(s):  
Md Zahangir Hossain ◽  
Md Mezbaul Bahar ◽  
Binoy Sarkar ◽  
Scott Wilfred Donne ◽  
Peter Wade ◽  
...  
Keyword(s):  
Slow Pyrolysis ◽  
Animal Manures

scholarly journals Slow pyrolysis liquid in reducing NH3 emissions from cattle slurry – Impacts on plant growth and soil organisms

2021 ◽  
pp. 147139
Author(s):  
Marleena Hagner ◽  
Mari Räty ◽  
Johanna Nikama ◽  
Kimmo Rasa ◽  
Sari Peltonen ◽  
...  
Keyword(s):  
Plant Growth ◽  
Soil Organisms ◽  
Cattle Slurry ◽  
Slow Pyrolysis ◽  
Pyrolysis Liquid
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