Biodiesel production from green seaweed Ulva fasciata catalyzed by novel waste catalysts from Pakistan Steel Industry

Khan, Abdul Majeed; Fatima, Noreen; Hussain, Muhammad Shoukat; Yasmeen, Kousar

doi:10.1016/j.cjche.2016.01.009

Cited by 20 publications

(16 citation statements)

References 13 publications

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“…The maximum biodiesel yield of 97.43% was obtained at optimized conditions of 800 °C calcination temperature, 8% catalyst concentration, 9:1 methanol to oil ratio, 55 °C reaction temperature, and 50 min reaction time [ 26 ]. Khan et al [ 27 ] used Ulva fasciata as feedstock for the production of biodiesel. The oil was extracted with n-hexane and the transesterification was carried out by fast stirring using a 9:1 molar ratio of methanol/oil in the presence of waste industrial catalysts for 6 h at 80–100 °C.…”

Section: Green Seaweeds and Their Applicationsmentioning

confidence: 99%

A Short Review on the Valorization of Green Seaweeds and Ulvan: FEEDSTOCK for Chemicals and Biomaterials

et al. 2020

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This short review analyzed the recent trend towards, progresses towards the preparation of chemicals of, and value-added biomaterials from marine macroalgae resources, especially green seaweeds and their derived ulvan polysaccharides for various applications. In recent years, ulvan both in pristine and modified forms has gained a large amount of attention for its effective utilization in various areas due to its unique physiochemical properties, lack of exploration, and higher green seaweed production. The pristine form of ulvan (sulfated polysaccharides) is used as a bio-component; food ingredient; or a raw material for the production of numerous chemicals such as fuels, cosmetics, and pharmaceuticals, whereas its modified form is used in the sector of composites, membranes, and scaffolds, among others, because of its physicochemical properties. This review highlights the utilization of green seaweed and its derived ulvan polysaccharides for the preparation of numerous chemicals (e.g., solvents, fuel, and gas) and also value-added biomaterials with various morphologies (e.g., gels, fibers, films, scaffolds, nanomaterials, and composites).

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Section: Green Seaweeds and Their Applicationsmentioning

confidence: 99%

A Short Review on the Valorization of Green Seaweeds and Ulvan: FEEDSTOCK for Chemicals and Biomaterials

et al. 2020

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“…Cyanobacteria and macroalgae can also potentially generate research and development interest in bioenergy production due to increasing and contextual demand for bioenergy (Mohan et al, 2016). Otherwhise, even if the cleaning process of macroalgae is still costly (Morand and Merceron, 2005), industrial utilization of this macroalgal biomass is in full growth worldwide (Abd El- Baky et al, 2009 ;Khan et al, 2016 ;Qiu et al, 2017) and could bear these costs for economic purposes which disproportionate regarding the benefits associated to this restoration. This is due to methodological and conceptual issues regarding the assessment of benefits focusing on few ES (Feuillette et al, 2016).…”

Section: Potential Impacts On Es Demandmentioning

confidence: 99%

How does eutrophication impact bundles of ecosystem services in multiple coastal habitats using state-and-transition models

Kermagoret

Claudet

Derolez

et al. 2019

Ocean & Coastal Management

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One of the current major scientific challenges to sustain social-ecological systems is to improve our understanding of the spatial and temporal dynamics of the relationships between biodiversity, ecosystem functioning and ecosystem services. Here, we analyse the bundles of ecosystem services supplied by three coastal ecosystems (coastal lagoons, coral reefs and sandy beaches) along a gradient of eutrophication. Based on a state-and-transition model, we analyses the dynamic responses of ecological communities to environmental change and management actions. Although few exceptions are highlighted, increasing eutrophication in the three ecosystem types leads to a degradation of the ecosystem service bundles, particularly for nutrient and pathogen regulation/sequestration, or for the support of recreational and leisure activities. Despite few obstacles to their full use, state-and-transition models can be very powerful frameworks to integrate multiple functions and services delivered by ecosystems while accounting for their temporal dynamics. Highlights► Gradients of eutrophication modify bundles of coastal ecosystem services. ► Nutrient and pathogen regulation as well as cultural services are particularly impacted. ► State-and-transition model is a powerful framework for environmental management. ► Managers can balance the few gains of eutrophication with the losses of ecosystem services.

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“…In order to produce biodiesel, homogeneous strong acids and bases and heterogeneous metal oxides (BaO, CaO, CdO, MgO, SrO, TiO 2 , ZnO, and ZrO 2 ) are commonly used as catalysts (e.g., waste industrial dusts without any pretreatment) which can come from different stages of steel manufacturing as by‐products, which might reduce cost and time. Additionally, the catalyst can be recovered for reuse (Khan et al, ). Annam Renita, Hannan, and Phukan () proposed not only biodiesel production from marine seaweeds ( Caulerpa peltata ), but also the application of green catalysts made from waste eggshells prepared by calcination at various temperatures for various time periods.…”

Section: Technologies Converting Algal Biomass To Energymentioning

confidence: 99%

“…Additionally, algae can be cultivated in land areas that are unsuitable for agricultural purposes (Menetrez, ). Their biomass is CO 2 neutral because seaweeds are renewable sources that absorb CO 2 (Khan et al, ; Khan et al, ). Algal biomass can contribute to the reduction of greenhouse gas emissions and climate change (Rajkumar et al, ).…”

Section: Advantages and Disadvantages For Biofuels Productionmentioning

confidence: 99%

“…TAGs are rich in fatty acids and their content in seaweeds is the best indicator of their suitability for biodiesel production (Suutari et al, 2015). The main advantages of TAGs are a high conversion rate to biodiesel, high percentage of fatty acids and lack of phosphorus, sulfur and nitrogen which are present in phospholipids and glycolipids (Khan, Fatima, Hussain, & Yasmeen, 2016;Suutari et al, 2015). Not only is a high content of fatty acids recommended, but also the fatty acid profile is important and it should be rich in saturated fatty acids with a high content of C18:1 (Gosch et al, 2012).…”

Section: Biofuel Biomassmentioning

confidence: 99%

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Experimental processing of seaweeds for biofuels

Michalak

2018

WIREs Energy & Environment

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The following paper provides an overview of the potential uses of seaweeds derived both from artificial cultivation as well as from eutrophic reservoirs as the feedstock for biofuels production. This review presents biochemical (anaerobic digestion [AD] and fermentation), chemical (extraction and transesterification) and thermochemical conversions (combustion, liquefaction, gasification and pyrolysis) of seaweeds for biofuels with special attention being paid to seaweeds processing such as pretreatment techniques, production methods and experimental conditions, and so forth. Seaweeds are considered as a suitable source for biogas and bioethanol production due to their high carbohydrate content. This review explores also the possibility of the application of oil extracted from seaweeds for biodiesel production. Since the chemical composition of seaweeds significantly differs from land biomass, a new comprehensive approach is required. Many macroalgal components are recalcitrant to bioconversion and pose microbiological challenges. The text deals with advantages and disadvantages of seaweeds as a feedstock for biofuels. Since macroalgae exploitation only for energy production is too expensive, seaweed integrated biorefineries were proposed as a solution which enables a development of high‐value algal bioproducts. Algae appear to be a promising source of biofuels. Utilization of waste algal biomass constitutes a link between the pollution abatement and energy production. This article is categorized under: Bioenergy > Science and Materials

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Biodiesel production from green seaweed Ulva fasciata catalyzed by novel waste catalysts from Pakistan Steel Industry

Cited by 20 publications

References 13 publications

A Short Review on the Valorization of Green Seaweeds and Ulvan: FEEDSTOCK for Chemicals and Biomaterials

A Short Review on the Valorization of Green Seaweeds and Ulvan: FEEDSTOCK for Chemicals and Biomaterials

How does eutrophication impact bundles of ecosystem services in multiple coastal habitats using state-and-transition models

Experimental processing of seaweeds for biofuels

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