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130 results on '"Ahmad, Muhammad Sajjad"'

43. Pyrolysis and Thermogravimetric Study to Elucidate the Bioenergy Potential of Novel Feedstock Produced on Poor Soils While Keeping the Environmental Sustainability Intact

Author

Ahmad, Muhammad Sajjad, primary, Mehmood, Muhammad Aamer, additional, Luo, Huibo, additional, Shen, Boxiong, additional, Latif, Muhammad, additional, Ghani, Wan Azlina Wan Ab Karim, additional, Alkhattabi, Nuha Abdulhamid, additional, Aloqbi, Akram Ahmed, additional, Jambi, Ebtihaj Jamaluddin, additional, Gull, Munazza, additional, and Rashid, Umer, additional

Published
2019
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44. Pyrolysis and thermogravimetric study to elucidate the bioenergy potential of novel feedstock produced on poor soils while keeping the environmental sustainability intact

Author

Ahmad, Muhammad Sajjad, Mehmood, Muhammad Aamer, Luo, Huibo, Shen, Boxiong, Latif, Muhammad, Wan Ab. Karim Ghani, Wan Azlina, Alkhattabi, Nuha Abdulhamid, Aloqbi, Akram Ahmed, Jambi, Ebtihaj Jamaluddin, Gull, Munazza, Rashid, Umer, Ahmad, Muhammad Sajjad, Mehmood, Muhammad Aamer, Luo, Huibo, Shen, Boxiong, Latif, Muhammad, Wan Ab. Karim Ghani, Wan Azlina, Alkhattabi, Nuha Abdulhamid, Aloqbi, Akram Ahmed, Jambi, Ebtihaj Jamaluddin, Gull, Munazza, and Rashid, Umer

Abstract

This work focused on exploring the bioenergy potential of biomass produced on salt-affected soils by growing two types of grasses, namely Parthenium hysterophorus (carrot grass) and Pennesetum benthiumo (mott grass), without using fertilizers or pesticides. The whole plant biomass of both grasses was pyrolyzed at three heating rates (10, 30, and 50 °C min−1) in a joined Thermogravimetry–Differential Scanning Calorimetry (TGA–DSC) analyzer under an inert (nitrogen) environment. The pyrolysis of both grasses was shown to occur in a three-stage process, while most of the thermal transformation occurred at the temperature range of 240–400 °C. The pyrolytic behavior was assessed by estimating the kinetic parameters, using the isoconversional models of Kissenger–Akahira–Sunose and Ozawa–Flynn–Wall. The average values of the activation energy of carrot and mott grasses were shown to be 267 kJ mol−1 (R2 ≥ 0.98) and 188 kJ mol−1 (R2 ≥ 0.98), indicating the suitability of both grasses for co-pyrolysis. Whereas, the difference in the values of enthalpy change and the activation energy was shown to be <~5 kJ mol−1 at each fractional point, which indicated that the product formation was being favored. Moreover, the high heating values of carrot grass (18.25 MJ kg−1) and mott grass (18.63 MJ kg−1) have shown a remarkable bioenergy potential and suitability of co-pyrolysis for both grasses. This study will lead to establishing an energy-efficient and cost-effective process for the thermal transformation of biomass to bioenergy.

Published
2019

45. Reply to “Evaluating the bioenergy potential of Chinese Liquor-industry wastethrough pyrolysis, thermogravimetric, kinetics and evolved gas analyses” [Energy Conversion and Management 163, 13–21, 2018] by Ye et al.

Author

Ye, Guangbin, primary, Luo, Huibo, additional, Ren, Zhiqiang, additional, Ahmad, Muhammad Sajjad, additional, Liu, Chen-Guang, additional, Tawab, Abdul, additional, Al-Ghafari, Ayat Badr, additional, Omar, Ulfat, additional, Gull, Munazza, additional, and Mehmood, Muhammad Aamer, additional

Published
2018
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48. Biorefinery potential of Typha domingensisbiomass to produce bioenergy and biochemicals assessed through pyrolysis, thermogravimetry, and TG-FTIR-GCMS-based study

Author

Yasmin, Tahira, Asghar, Azeem, Ahmad, Muhammad Sajjad, Mehmood, Muhammad Aamer, and Nawaz, Muhammad

Abstract

Rising demands for bioenergy and green products have led researchers to explore alternative, sustainable, and cost-effective feedstocks for biorefinery, among which perennial grasses adapted to marginal lands offer cost-effective and sustainable biomass to produce bioenergy and biochemicals without creating any competition with the agricultural lands. The current study investigated the biorefinery potential of a fast-growing perennial grass Typha domingensis. Its biomass was pyrolyzed at 10, 20, 40, and 80 °C min−1in a Thermogravimeter analyzer. The kinetics and thermodynamics features of pyrolysis were computed through Starink, Kissinger–Akahira–Sunose, and Flynn–Wall–Ozawa models. The main pyrolysis reaction occurred during the second stage at 200–380 °C at the corresponding conversions (α) of 0.2 to 0.6. The average activation energies, Gibb’s free energies, and High Heating Values ranged between 100–150 kJ mol−1, 208–210 kJ mol−1, and 17.699 MJ kg−1, respectively. The lower (< 5 kJ mol−1) differences between the enthalpy change and activation energies at each conversion showed a thermodynamically favored reaction. The FTIR-based prominent spectral absorptions were observed at 600–800 cm−1, bending at 1004 cm−1, and stretching at 1644 and 3090 cm−1which suggested the occurrence of halides and alkenes. The strong stretching bands at 1700–1725 cm−1, and bending at 1415 cm−1indicated the presence of carbonyl, alcoholic, and/or carboxylic functional groups. The GC–MS-based chromatogram confirmed the presence of alkanes, alcohols, organic acids, esters, ketones, aldehydes, amides, and amines. These data indicated that T. domingensishas a substantial potential to become a feedstock of a sustainable biorefinery to produce bioenergy and biochemicals.

Published
2021
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