Production and characterization of a value added biochar mix using seaweed, rice husk and pine sawdust: A parametric study

2018 ◽  
Vol 200 ◽  
pp. 641-656 ◽  
Author(s):  
Goldy De Bhowmick ◽  
Ajit K. Sarmah ◽  
Ramkrishna Sen
2021 ◽  
Vol 22 (1) ◽  
pp. 1-8
Author(s):  
Anwar Saeed ◽  
Noorfidza Harun ◽  
Suriati Sufian ◽  
Haruna Afolabi ◽  
Ebrahim Al-Qadami ◽  
...  

2021 ◽  
Author(s):  
P. Araichimani ◽  
K.M. Prabu ◽  
G. Suresh Kumar ◽  
Gopalu Karunakaran ◽  
S. Surendhiran ◽  
...  

Abstract We synthesized mesoporous SiO2 nanomatrix using rice husks as a precursor through a facile thermal combustion process. XRD, FTIR, EDX, and TEM analyses were used to validate the produced mesoporous SiO2 nanomatrix. Electrochemical measurements were used to determine the specific capacitance of mesoporous SiO2 nanomatrix, and the results showed that the specific capacitances are 216, 204, 182, 163, 152, 142, 135, 133, 124.4, 124 F/g at current densities of 0.5, 1, 2, 4, 6, 8, 10, 12, 14, and 16 A/g. The benefit of impurities, as well as the large surface area and mesoporous structure of rice husk derived SiO2 nanostructures, allow Faradaic redox reactions at the electrode surface and the resulting supercapacitive behavior. This research might lead to a low-cost technique of producing supercapacitor electrodes using rice husk-derived SiO2 as a precursor.


2021 ◽  
pp. 107141
Author(s):  
Chellam Somasundarar Shivamathi ◽  
Sathaiah Gunaseelan ◽  
Michael Rahul Soosai ◽  
Nagamalai Sakthi Vignesh ◽  
Perumal Varalakshmi ◽  
...  

2017 ◽  
Vol 2017 ◽  
pp. 1-9 ◽  
Author(s):  
Rodrigo Heleno Alves ◽  
Thais Vitória da Silva Reis ◽  
Suzimara Rovani ◽  
Denise Alves Fungaro

In this study, ash from sugarcane waste was used in the synthesis of biosilica using alkaline extraction followed by acid precipitation. Different parameters that could influence the silica particle synthesis were evaluated. The ash and synthesized biosilica were characterized by a combination of spectroscopic and chemical techniques such as XRD, XRF, SEM, particle size analyser, N2 adsorption analysis, TGA, and FTIR. The best condition for biosilica production was achieved with fusion method and aging temperature of 80°C for 1 h during gel formation. X-ray powder diffraction pattern confirms the amorphous nature of synthesized silica. The purity of the prepared silica was 99% silica which was confirmed by means of XRF. The experimental data suggest that the sugarcane waste ash could be converted into a value-added product, minimizing the environmental impact of disposal problems.


2020 ◽  
Vol 5 (2) ◽  
pp. 23-28
Author(s):  
Edi Widodo ◽  
Mohammad Dani Iswanto ◽  
Prantasi Harmi Thahjanti ◽  
Rachmat Firdaus

Rice mills produce abundant husk waste. The husks are used as a mixing material for bricks because they are flammable and have capability to form hot coals with high calor. This potential is used to develop the husks into briquettes. This study used rice husks (oriza sativa) and flamboyant pods (Royal ponciana) as the main ingredients for forming briquettes. This pods was chosen because had not optimally used. The composition of rice husk briquettes and flamboyant fruit skins made of 16.7%: 83.3%, 33.4%: 66.6%, 50%: 50%, 66.6%: 33.4%, 83.3 %: 16.7%. The briquettes formed were measured the calorific value, mass reduction using the TGA (Thermogravimetric analysis) thermal measurement method, and measured the values ​​of moisture, ash, volatile, and fixed carbon content. The results of the measurement of the lowest calorific value in rice husk briquettes were 83.3% with a value of 4,551 cal / gram, while the highest value was 5,945 cal / gram in rice husk briquettes percentage of 16.7%. The result of TGA measurement of the largest mass reduction was briquettes with a percentage of husk 83.3% having the highest mass reduction of 11.1 mg. The results of the measurement of water content obtained 7.04%, 24.70% volatile, 9.98% ash content, 58.28% fixed carbon


2016 ◽  
Vol 91 ◽  
pp. 270-281 ◽  
Author(s):  
Anuj Kumar ◽  
Subhajit Singha ◽  
Bratin Sengupta ◽  
Dalia Dasgupta ◽  
Siddhartha Datta ◽  
...  

2018 ◽  
Author(s):  
Younghwan Cha ◽  
Jung-In Lee ◽  
Panpan Dong ◽  
Xiahui Zhang ◽  
Min-Kyu Song

A novel strategy for the oxidation of Mg-based intermetallic compounds using CO<sub>2</sub> as an oxidizing agent was realized via simple thermal treatment, called ‘CO2-thermic Oxidation Process (CO-OP)’. Furthermore, as a value-added application, electrochemical properties of one of the reaction products (carbon-coated macroporous silicon) was evaluated. Considering the facile tunability of the chemical/physical properties of Mg-based intermetallics, we believe that this route can provide a simple and versatile platform for functional energy materials synthesis as well as CO<sub>2</sub> chemical utilization in an environment-friendly and sustainable way.


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