Estimation of effect of sugarcane bagasse biochar amendment in landfill soil cover on geotechnical properties and landfill gas emission

2017 ◽  
Vol 27 (2) ◽  
pp. 33-39 ◽  
Author(s):  
Ayshwarya Sudhakar ◽  
Neelancherry Remya ◽  
George K Varghese
Pedosphere ◽  
2021 ◽  
Vol 31 (4) ◽  
pp. 572-582
Author(s):  
Barbara Samartini Queiroz ALVES ◽  
Katherin Prissila Sevilla ZELAYA ◽  
Fernando COLEN ◽  
Ledivan Almeida FRAZÃO ◽  
Alfredo NAPOLI ◽  
...  

2021 ◽  
Vol 6 (2) ◽  
pp. 337-352
Author(s):  
Arif Hidayat ◽  
Winarto Kurniawan ◽  
Hirofumi Hinode

In this study, the utilization of sugarcane bagasse biochar (SCBB) as a solid catalyst was investigated for biodiesel production from palm oil industry waste residue. The catalyst was synthesized by sulfonation of SCBB to attach sulfonate functional group. Several analyses such as Nitrogen Gas Sorption Analysis, acidity, Fourier Transform Infra-Red spectroscopy, and X-ray powder diffraction (XRD) were applied to determine the properties of SCBB catalyst. The SCBB catalysts were tested to esterify the palm oil industry waste residue which contains of Free Fatty Acids (FFAs). The SCBB catalyst activity test revealed that the variables including catalyst amount, methanol to PFAD mass ratio, and temperature influenced the FFAs conversion. The highest of FFAs of 86.1% was reached at reaction temperature of 65 °C with the PFAD to methanol mass ratio of 4:1, and catalyst amount of 5 wt.% PFAD. The E-R kinetic model as developed can be described the mechanism of esterification reaction


Author(s):  
Marcos da Silva ◽  
Maria de Queiroz ◽  
Antônio Neves ◽  
Antônio da Silva ◽  
André de Oliveira ◽  
...  

2019 ◽  
Vol 87 ◽  
pp. 833-834 ◽  
Author(s):  
Richard Beaven ◽  
Charlotte Scheutz

Soil Research ◽  
1995 ◽  
Vol 33 (1) ◽  
pp. 77 ◽  
Author(s):  
UK Avalakki ◽  
WM Strong ◽  
PG Saffigna

Measurement of gas emissions from denitrification of applied N has been restricted because of the lack of a convenient method. Recently a method using an electric are to measure 15N contents of dinitrogen (N2) and nitrous oxide (N2;O) in air has been developed. Gas emissions from denitrification of applied 15N were determined using this method for gas analysis of the 15N2 and 15N2O captured beneath an air-tight soil cover. Loss of 15N was calculated from gas emission measurements by two methods, accumulation of daily emissions and from the peak 15N emission value by assuming linear increase and decrease over the period of emissions. Losses estimated at low emissions with incomplete soil saturation were similar (1.9 - 5.6% 15N applied) for the two methods. Losses estimated at higher emissions with complete soil saturation were higher when calculated using peak emission values (14.8 - 28.5%) rather than accumulated daily emissions (9.5 - 18.7%). Losses estimated by emissions were compared with 15N loss estimated by mass balance at the completion of two successive soil saturations. As daily cover duration was shortened, gas emission estimates of loss more closely approximated total gaseous 15N as estimated from unaccounted for 15N in the15N balance. With shortest cover duration (15 min day-1) there was close agreement (94% estimated from peak emissions) with 15N loss estimated by 15N balance. A strategy for quantitatively estimating 15N loss by emission measurements is suggested.


2016 ◽  
Vol 135 ◽  
pp. 829-835 ◽  
Author(s):  
Mukesh Kumar Awasthi ◽  
Quan Wang ◽  
Hui Huang ◽  
Ronghua Li ◽  
Feng Shen ◽  
...  

2016 ◽  
Vol 95 ◽  
pp. 101-111 ◽  
Author(s):  
Laleh Divband Hafshejani ◽  
Abdolrahim Hooshmand ◽  
Abd Ali Naseri ◽  
Amir Soltani Mohammadi ◽  
Fariborz Abbasi ◽  
...  

2016 ◽  
Vol 17 (8) ◽  
pp. 667-676 ◽  
Author(s):  
Chi Guan ◽  
Hai-jian Xie ◽  
Zhan-hong Qiu ◽  
Yun-min Chen ◽  
Pei-xiong Chen

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