Enhanced Methane Production from Anaerobic Co-Digestion of Wheat Straw Rice Straw and Sugarcane Bagasse: A Kinetic Analysis
| Autor: | Rabia Liaquat, Saadia Meraj, Salman Raza Naqvi, Atoofa Zainab, Dagmar Juchelková, Zeshan Sheikh, Abdulaziz Atabani, Asif Hussain Khoja |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Technology
animal structures QH301-705.5 020209 energy QC1-999 Gompertz function Biomass kinetic models 02 engineering and technology 010501 environmental sciences 01 natural sciences Biogas 0202 electrical engineering electronic engineering information engineering Bioreactor General Materials Science Organic matter substrate inoculum ratio (S/I) Biology (General) Instrumentation QD1-999 0105 earth and related environmental sciences anaerobic co-digestion Fluid Flow and Transfer Processes chemistry.chemical_classification Process Chemistry and Technology Physics kinetic parameters General Engineering food and beverages Straw pretreatment Pulp and paper industry Engineering (General). Civil engineering (General) lignocellulosic waste Computer Science Applications Chemistry chemistry TA1-2040 Bagasse Mesophile |
| Zdroj: | Applied Sciences Volume 11 Issue 13 Applied Sciences, Vol 11, Iss 6069, p 6069 (2021) |
| ISSN: | 2076-3417 |
| DOI: | 10.3390/app11136069 |
| Popis: | Future energy and environmental issues are the major driving force towards increased global utilization of biomass, especially in developing countries like Pakistan. Lignocellulosic residues are abundant in Pakistan. The present study investigated the best-mixed proportion of mechanically pretreated lignocellulosic residues i.e., wheat straw and rice straw (WSRS), bagasse and wheat straw (BAWS), bagasse, and rice straw (BARS), bagasse, wheat straw, and rice straw (BAWSRS) through anaerobic co-digestion. Anaerobic batch mode bioreactors comprising of lignocellulosic proportions and control bioreactors were run in parallel at mesophilic temperature (35 °C) for the substrate to inoculum (S/I) ratio of 1.5 and 2.5. Maximum and stable biomethane production was observed at the substrate to inoculum (S/I) ratio of 1.5, and the highest biomethane yield 339.0089123 NmLCH4/gVS was achieved by co-digestion of wheat straw and rice straw (WSRS) and lowest 15.74 NmLCH4/gVS from bagasse and rice straw (BARS) at 2.5 substrates to inoculum ratio. Furthermore, anaerobic reactor performance was determined by using bio-kinetic parameters i.e., production rate (Rm), lag phase (λ), and coefficient of determination (R2). The bio-kinetic parameters were evaluated by using kinetic models first-order kinetics, Logistic function model, Modified Gompertz Model, and Transference function model. Among all kinetic models, the Logistic function model provided the best fit with experimental data followed by Modified Gompertz Model. The study suggests that a decrease in methane production was due to lower hydrolysis rate and higher lignin content of the co-digested substrates, and mechanical pretreatment leads to the breakage of complex lignocellulosic structure. The organic matter degradation evidence will be utilized by the biogas digesters developed in rural areas of Pakistan, where these agricultural residues are ample waste and need a technological solution to manage and produce renewable energy. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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