Pyrolysis kinetics and conversion of pomegranate peels into porous carbon

Abstract

Pyrolysis is one of the most common, sustainable, and excellent environmental‐friendly method to evaluate the bio‐energy potential of different types of biomass wastes. Pomegranate peel is a well‐known low‐cost industrial waste. Thus, pomegranate peel's physicochemical properties were explored in detail, and a pyrolysis kinetic study and thermal behavior analysis were performed. Thermal degradation of biomass was investigated on different heating rates (5, 10, 15, and 20°C/min) by using TG‐DSC. To calculate the kinetic parameters (Ea, A), three different kinetic models were used, including the Flynn‐Wall‐Ozawa (FWO), Kissinger‐Akahira‐Sunose (KAS), and Starink methods. The average Ea values for FWO, KAS, and Starink methods are 85.2141, 80.37217, and 80.74315 kJ mol−1, respectively. Furthermore, the reaction mechanism and thermodynamic parameters (ΔH, ΔG, and ΔS) were simulated and calculated to further comprehend the pyrolysis process. The residual carbon (char) obtained after the pyrolysis process was further characterized by SEM‐EDX and BET to quantify the morphology, surface area, and porosity. SEM results revealed that the residual carbon has a honey‐comb like porous structure, whereas BET analysis reflects that PP800 possesses the highest specific surface area (SSA) ~ 1288.97 m2 g−1 with an average pore diameter of 8.85 nm. Thus, it has enormous potential to be used as adsorbent and active electrode material in energy storage devices.

Management of waste crustacean shells for the construction of a carbon-negative circulation model

“…In addition, to acquire comprehensive knowledge on the pyrolysis process to design a suitable pyrolysis reactor and make the most use of WCS, it was significant to study the pyrolysis parameters, such as temperature range, heating rate and type of reactor. 15–18…”

Sustainable Utilization of Waste Biomass: Pyrolysis Kinetics of Jujube Pits and Lithium Storage Behavior of Pyrolytic Carbon

“…4 Among these alternatives, biomass emerges as the most promising, clean, abundant, renewable, and sustainable energy alternative to mitigate emissions in the environment and is considered to be a natural alternative that provides compounds with shallow carbon footprints. 4−7 Biomass can be converted into energy 1,8 and transformed into a pyrolytic carbon structure by thermal decomposition in an inert environment, exhibiting high thermal stability, chemical resistance, and surface area. 9−11 The properties of the resulting pyrolytic carbon mainly depend upon the chemical structure of the starting biomass.…”

“…12,13 Thermokinetics plays a pivotal role in controlling the carbonization process, influencing the morphology, porosity, and electrochemical properties of carbon materials. 14,1,15,16 Through precise modulation of the temperature, heating rate, and residence time, researchers can tailor the carbon structure to meet specific performance requirements, such as improved conductivity, enhanced lithium-ion diffusion, and prolonged cycling stability. 17−20 Yet, the synergistic interplay between HHV and thermokinetics for optimizing carbon structures in LIB electrodes remains a largely untapped frontier.…”

“…Disproportionate burning of fossil fuels led to adverse environmental effects through the emission of toxic gases (NO X , SO X , and CO 2 ) into the air. , Excessive consumption of these nonrenewable reservoirs causes the depletion of these reserves shortly . To address these issues, the demand for new renewable, sustainable, abundant, and ecofriendly alternatives for energy and raw materials is growing these days .…”

“…To address these issues, the demand for new renewable, sustainable, abundant, and ecofriendly alternatives for energy and raw materials is growing these days . Among these alternatives, biomass emerges as the most promising, clean, abundant, renewable, and sustainable energy alternative to mitigate emissions in the environment and is considered to be a natural alternative that provides compounds with shallow carbon footprints. − Biomass can be converted into energy , and transformed into a pyrolytic carbon structure by thermal decomposition in an inert environment, exhibiting high thermal stability, chemical resistance, and surface area. − The properties of the resulting pyrolytic carbon mainly depend upon the chemical structure of the starting biomass. Lignocellulosic biomasses, such as jujube pits, present reliable renewable sources, which contain lignin, hemicellulose, cellulose, and a minor amount of extractives.…”