An introduction to biofuels, foods, livestock, and the environment

Dahman, Yaser; Dignan, Cherilyn; Fiayaz, Asma; Chaudhry, Ahmad Hassan

doi:10.1016/b978-0-08-102426-3.00013-8

Cited by 26 publications

(17 citation statements)

References 81 publications

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“…The concentration of impurities depends on raw materials and conditions of anaerobic digestion [35]. Biogas could be produced from different raw materials and classified as a first-generation alternative fuel (sugarcane, silage maize, energy crops) [36], or the second (food waste, agricultural residue, wood chips, lignocellulosic crops) [37], third (algal biomass) [38] or fourth (algae and other microbes) alternative [39]. Table 4 presents a comparison of properties of biogas consisting of 57 vol.% CH 4 and 41 vol.% CO 2 and conventional fuel.…”

Section: ±001%mentioning

confidence: 99%

Impact of Simulated Biogas Compositions (CH4 and CO2) on Vibration, Sound Pressure and Performance of a Spark Ignition Engine

et al. 2021

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Biogas has increasingly been used as an alternative to fossil fuels in the world due to a number of factors, including the availability of raw materials, extensive resources, relatively cheap production and sufficient energy efficiency in internal combustion engines. Tightening environmental and renewable energy requirements create excellent prospects for biogas (BG) as a fuel. A study was conducted on a 1.6-L spark ignition (SI) engine (HR16DE), testing simulated biogas with different methane and carbon dioxide contents (100CH4, 80CH4_20CO2, 60CH4_40CO2, and 50CH4_50CO2) as fuel. The rate of heat release (ROHR) was calculated for each fuel. Vibration acceleration time, sound pressure and spectrum characteristics were also analyzed. The results of the study revealed which vibration of the engine correlates with combustion intensity, which is directly related to the main measure of engine energy efficiency—break thermal efficiency (BTE). Increasing vibrations have a negative correlation with carbon monoxide (CO) and hydrocarbon (HC) emissions, but a positive correlation with nitrogen oxide (NOx) emissions. Sound pressure also relates to the combustion process, but, in contrast to vibration, had a negative correlation with BTE and NOx, and a positive correlation with emissions of incomplete combustion products (CO, HC).

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Section: ±001%mentioning

confidence: 99%

Impact of Simulated Biogas Compositions (CH4 and CO2) on Vibration, Sound Pressure and Performance of a Spark Ignition Engine

et al. 2021

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“…However, this technology is quite expensive. Therefore, it would not be able to compete commercially with other technologies for biofuels soon [10].…”

Section: Theoretical Bases Of Producing Liquid Biofuels From Biomassmentioning

confidence: 99%

“…Table 1. The main advantages and disadvantages of using liquid motor biofuels (based on [10,11,12]).…”

Section: Theoretical Bases Of Producing Liquid Biofuels From Biomassmentioning

confidence: 99%

World market of liquid biofuels: trends, policy and challenges

Hyrchenko

Skibina

et al. 2021

E3S Web Conf.

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This paper aimed at studying the current state of development of liquid biofuels’ world market. The authors considered the theoretical bases of liquid biofuels production, their types, disadvantages and advantages. The world experience of introducing stimulation mechanisms of development and their influence on the sectors’ growth is analyzed. In this study’s frame, there is outlined the world leaders in the production of liquid biofuels. The findings represent the peculiarities of state regulation in implementing mandates for creating transport fuels with bioliquids. The current state of investment in the production of liquid biofuels was investigated. The obtained results contribute to the prospects for promoting world production of liquid biofuels to achieve the Paris Agreement’s goals by 2030 under the sustainable development scenario.

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“…Compared to first- and third-generation biomass, the second-generation biomass is relatively more sustainable [ 28 ]. This is because they are the byproducts of agricultural industry and there is no additional requirement of land, water, and fertilizer use to derive these sources.…”

Section: Introductionmentioning

confidence: 99%

Experimental and computational studies of cellulases as bioethanol enzymes

et al. 2022

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Bioethanol industries and bioprocesses have many challenges that constantly impede commercialization of the end product. One of the bottlenecks in the bioethanol industry is the challenge of discovering highly efficient catalysts that can improve biomass conversion. The current promising bioethanol conversion catalysts are microorganism-based cellulolytic enzymes, but lack optimization for high bioethanol conversion, due to biological and other factors. A better understanding of molecular underpinnings of cellulolytic enzyme mechanisms and significant ways to improve them can accelerate the bioethanol commercial production process. In order to do this, experimental methods are the primary choice to evaluate and characterize cellulase’s properties, but they are time-consuming and expensive. A time-saving, complementary approach involves computational methods that evaluate the same properties and improves our atomistic-level understanding of enzymatic mechanism of action. Theoretical methods in many cases have proposed research routes for subsequent experimental testing and validation, reducing the overall research cost. Having a plethora of tools to evaluate cellulases and the yield of the enzymatic process will aid in planning more optimized experimental setups. Thus, there is a need to connect the computational evaluation methods with the experimental methods to overcome the bottlenecks in the bioethanol industry. This review discusses various experimental and computational methods and their use in evaluating the multiple properties of cellulases.

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An introduction to biofuels, foods, livestock, and the environment

Cited by 26 publications

References 81 publications

Impact of Simulated Biogas Compositions (CH4 and CO2) on Vibration, Sound Pressure and Performance of a Spark Ignition Engine

Impact of Simulated Biogas Compositions (CH4 and CO2) on Vibration, Sound Pressure and Performance of a Spark Ignition Engine

World market of liquid biofuels: trends, policy and challenges

Experimental and computational studies of cellulases as bioethanol enzymes

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