Aïcha Mabrouk - Academia.edu (original) (raw)
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Papers by Aïcha Mabrouk
Green energy and technology, 2018
Chemical Engineering Transactions, 2019
In this work, an industrial sulfuric acid production unit was evaluated using exergetic and exerg... more In this work, an industrial sulfuric acid production unit was evaluated using exergetic and exergoeconomic analysis to determine possible improvements in its efficiency and cost effectiveness. The exergoeconomic evaluation was performed by Specific exergy costing method (SPECO). The case study process is the production of sulfuric acid from liquid sulfur by a double absorption contact. The exergy efficiency, exergy losses and exergoeconomic performance of each component in the overall plant were calculated and analyzed. The exergetic analysis, on the studied process, identifies the location, magnitude, and sources of thermodynamic inefficiencies. The obtained results indicated that the largest exergy destruction took place in the combustion stage, representing a 67 % of the total exergy losses. The exergy efficiency of the unit was around 44.7 %. Through the exergoeconomic analysis, the selling price of the produced H2SO4 as well as the total investment cost were estimated and the e...
Chemical engineering transactions, 2017
To reduce the reliance on fossil fuels, alternative energy sources, such as lignocellulosic bioma... more To reduce the reliance on fossil fuels, alternative energy sources, such as lignocellulosic biomass and agricultural residues, are urgently sought to be recovered and processed to obtain biofuels, chemicals and other high value-added products using diverse processing technologies. In this study, the exergetic and economic evaluation of a lignin valorisation process for catechol production was carried out in order to determine its feasibility. The process is divided into 3 parts: (1) delignification of the feedstock; (2) lignin depolymerisation; (3) products separation. The investment and operating costs of the process and the obtained catechol market price were estimated. The results showed that the total capital investment of the plant was, approximately, 4.9 M$ based on the plant capacity of 2,544 kg/d of feedstock. Besides, the catechol price was estimated to be 1,100 $/t and the valorisation ratio was found to be 3.02. The obtained results indicate the interesting position of th...
Applied Thermal Engineering, 2016
International Journal of Hydrogen Energy, 2016
Green and Sustainable Chemistry, 2015
Journal of Cleaner Production, 2018
Recently, the valorization of the lignin fraction in the biorefinery scheme is getting more and m... more Recently, the valorization of the lignin fraction in the biorefinery scheme is getting more and more attention as the use of this component for the production of bio-based chemicals is crucial for the success of the integral development of lignocellulosic biorefinery processes. The present work includes the exergy performance and the economic analysis of a process for catechols production using lignin extracted from olive tree pruning. Energy and exergy calculations were obtained from the process simulation with Aspen Plus ®. The exergy analysis was applied to identify the units associated with the main irreversibilities and exergy losses. The process investment and operating costs were determined as well as the derived catechol market price. The calculated total plant capital investment was about 4.9 M$ for a plant capacity of 2,544 kg feedstock /day. The estimated catechol price was 1100 $/t with a valorization ratio of 3.02. These results place the product in a competitive position in the market.
Green energy and technology, 2018
Chemical Engineering Transactions, 2019
In this work, an industrial sulfuric acid production unit was evaluated using exergetic and exerg... more In this work, an industrial sulfuric acid production unit was evaluated using exergetic and exergoeconomic analysis to determine possible improvements in its efficiency and cost effectiveness. The exergoeconomic evaluation was performed by Specific exergy costing method (SPECO). The case study process is the production of sulfuric acid from liquid sulfur by a double absorption contact. The exergy efficiency, exergy losses and exergoeconomic performance of each component in the overall plant were calculated and analyzed. The exergetic analysis, on the studied process, identifies the location, magnitude, and sources of thermodynamic inefficiencies. The obtained results indicated that the largest exergy destruction took place in the combustion stage, representing a 67 % of the total exergy losses. The exergy efficiency of the unit was around 44.7 %. Through the exergoeconomic analysis, the selling price of the produced H2SO4 as well as the total investment cost were estimated and the e...
Chemical engineering transactions, 2017
To reduce the reliance on fossil fuels, alternative energy sources, such as lignocellulosic bioma... more To reduce the reliance on fossil fuels, alternative energy sources, such as lignocellulosic biomass and agricultural residues, are urgently sought to be recovered and processed to obtain biofuels, chemicals and other high value-added products using diverse processing technologies. In this study, the exergetic and economic evaluation of a lignin valorisation process for catechol production was carried out in order to determine its feasibility. The process is divided into 3 parts: (1) delignification of the feedstock; (2) lignin depolymerisation; (3) products separation. The investment and operating costs of the process and the obtained catechol market price were estimated. The results showed that the total capital investment of the plant was, approximately, 4.9 M$ based on the plant capacity of 2,544 kg/d of feedstock. Besides, the catechol price was estimated to be 1,100 $/t and the valorisation ratio was found to be 3.02. The obtained results indicate the interesting position of th...
Applied Thermal Engineering, 2016
International Journal of Hydrogen Energy, 2016
Green and Sustainable Chemistry, 2015
Journal of Cleaner Production, 2018
Recently, the valorization of the lignin fraction in the biorefinery scheme is getting more and m... more Recently, the valorization of the lignin fraction in the biorefinery scheme is getting more and more attention as the use of this component for the production of bio-based chemicals is crucial for the success of the integral development of lignocellulosic biorefinery processes. The present work includes the exergy performance and the economic analysis of a process for catechols production using lignin extracted from olive tree pruning. Energy and exergy calculations were obtained from the process simulation with Aspen Plus ®. The exergy analysis was applied to identify the units associated with the main irreversibilities and exergy losses. The process investment and operating costs were determined as well as the derived catechol market price. The calculated total plant capital investment was about 4.9 M$ for a plant capacity of 2,544 kg feedstock /day. The estimated catechol price was 1100 $/t with a valorization ratio of 3.02. These results place the product in a competitive position in the market.