Potential of bioethanol production from agricultural wastes in Iran

Najafi, G.; Ghobadian, Barat; Tavakoli, T.; Yusaf, Talal

doi:10.1016/j.rser.2008.08.010

Cited by 141 publications

(50 citation statements)

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“…Bagasse, the sugarcane residue generated after sugar extraction, is one of the most readily available papermaking lignocellulosic fiber resources in some developing countries, e.g., Iran. Approximately 4.3 million tons of bagasse is produced annually in Iran, mainly in the southwestern province of Khuzestan (Najafi et al 2009), and about 54 million tons of bagasse is produced annually throughout the world. In general, sugar factories generate approximately 270 kg of bagasse (50% moisture content) per metric ton of sugarcane (Xu et al 2006).…”

Section: Introductionmentioning

confidence: 99%

Investigating the Possibility of Chemi-mechanical Pulping of Bagasse

et al. 2012

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dChemi-mechanical pulping was evaluated as a potential way to prepare sugarcane bagasse fibers for papermaking. Cellulose, lignin, ash, and extractives soluble in alcohol-acetone were measured as 55.75%, 20.5%, 1.85%, and 3.25%, respectively. Fiber length, diameter, lumen cavity, and cell wall thickness were measured as 1.59 mm, 20.96, 9.72, and 5.64 µm. The chemi-mechanical pulping conditions were selected as follows: three charging levels of 10, 15, and 20% sodium sulphite, and three pulping times of 20, 30, and 40 minutes after reaching the pulping temperature. Pulping temperature was held constant at 165 C. Different pulping conditions resulted in pulp yields between 65.38 and 84.28%. The highest yield (84.28%) was obtained using a treatment combination of 20 minutes pulping time and 10% sodium sulphite. The lowest yield (65.38%) was related to 40 minutes pulping time and 20% sodium sulphite. Pulps were refined to 300 ± 25 mL CSF, 60 gm -2 handsheets were made, and then strength indices and optical properties of the handsheets were measured. The results showed that 20% sodium sulphite, 40 minutes pulping time, at 165 ºC can be considered as the optimum pulping conditions for bagasse CMP pulping. Tensile, tear, and burst strength indices, as well as the opacity of this pulp were measured as 39.59 Nmg , and 95.35%, respectively.

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Section: Introductionmentioning

confidence: 99%

Investigating the Possibility of Chemi-mechanical Pulping of Bagasse

et al. 2012

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“…The availability of agricultural waste for bioenergy production and various options in Iran is strongly recommended in different studies (e.g. Najafi et al, 2009). Scenario S4, which is a combination of S2 and S3 (i.e.…”

Section: The Lca Of Alternative Scenarios For Irrigated Barley Farmsmentioning

confidence: 99%

Environmental impacts of irrigated and rain-fed barley production in Iran using life cycle assessment (LCA)

Houshyar

2017

Span. j. agric. res.

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Current intensive grain crops production is often associated with environmental burdens. However, very few studies deal with the environmental performance of both current and alternative systems of barley production. This study was undertaken to evaluate energy consumption and environmental impacts of irrigated and rain-fed barley production. Additionally, three alternative scenarios were examined for irrigated barley fields including conservation tillage and biomass utilization policies. The findings showed that around 25 GJ/ha energy is needed in order to produce 2300 kg/ha irrigated barley and 13 GJ/ha for 1100 kg/ha rain-fed barley. Life cycle assessment (LCA) results indicated that irrigated farms had more environmental impacts than rain-fed farms. Electricity generation and consumption had the highest effect on the abiotic depletion potential, human toxicity potential, freshwater and marine aquatic ecotoxicity potential. However, alternative scenarios revealed that using soil conservation tillage systems and biomass consumption vs. gas for electricity generation at power plants can significantly mitigate environmental impacts of irrigated barley production similar to the rain-fed conditions while higher yield is obtained.Additional keywords: Hordeum vulgare L.; energy use efficiency; energy productivity; global warming potential.

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“…The economy of Iran relies on crude oil export strongly and the fluctuations of oil price impact on country's development [2]. Statistics show that Iran holds the fourth largest crude oil reserves and is the second largest natural gas reserves in the world [3]. Iran benefits enormous oil and natural gas reservoir as shown in Fig.…”

Section: Introductionmentioning

confidence: 99%

A Review of Renewable and Sustainable Energy Potential and Assessment of Solar Projects in Iran

Fathi¹,

Lavasani²

2017

JOCET

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Abstract-Using renewable energy is one of the most promising paths towards the sustainable development, especially in oil dependent economy nations like Iran. In present study, recourses, status and prospect of solar energy in Iran was investigated. Among renewable energy sources, Iran has a high solar energy potential with more than 300 clear sunny days in a year and average 2300 kW-h solar radiation per square meter. Considering just 1% of the total area with 10% system efficiency for solar energy harness, about 9 million MW h of energy can be obtained in a day. Iran had a plan to install 53,000 MW capacity plants for electricity generation. The existing small capacity solar energy plants are in provinces of Shiraz, Taleghan, Yazd, Semnan, Khorasan and Tehran. Based on the specified available solar through technology, solar area, average solar hours and average solar direct irradiation, the technical potential of solar electricity was estimated to be 14.7 TWe. The share of RES in total installed electricity capacity is expected to be about 2% in 2030. It is expected that the cumulative RES installed electricity capacity will reach 2800 MW in 2030 and it needs more than 2800 million US dollar investment among 2010-2030.

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Potential of bioethanol production from agricultural wastes in Iran

Cited by 141 publications

References 1 publication

Investigating the Possibility of Chemi-mechanical Pulping of Bagasse

Investigating the Possibility of Chemi-mechanical Pulping of Bagasse

Environmental impacts of irrigated and rain-fed barley production in Iran using life cycle assessment (LCA)

A Review of Renewable and Sustainable Energy Potential and Assessment of Solar Projects in Iran

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