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Keyword: Catalyst
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Open AccessArticle
6 Pages, 664 KB Download PDF

Biodiesel Production from Methanolysis of Lard Using CaO Catalyst Derived from Eggshell: Effects of Reaction Time and Catalyst Loading

Advances in Science, Technology and Engineering Systems Journal, Volume 6, Issue 2, Page # 399–404, 2021; DOI: 10.25046/aj060246
Abstract:

Biodiesel was produced from lard using a CaO catalyst derived from eggshells. The effects of catalyst loading and transesterification reaction time were investigated. The results revealed that the increase in yield of biodiesel occurred at all catalyst loading when the reaction time was increased. The optimal reaction time was obtained at 60 minutes. The results…

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(This article belongs to Section Chemical Engineering (ENC))
Open AccessArticle
7 Pages, 646 KB Download PDF

Types and Concentrations of Catalysts in Chemical Glycerolysis for the Production of Monoacylglycerols and Diacylglycerols

Advances in Science, Technology and Engineering Systems Journal, Volume 6, Issue 1, Page # 612–618, 2021; DOI: 10.25046/aj060166
Abstract:

Monoacylglycerol (MAG) and diacylglycerol (DAG) are structured lipids that have been widely used in various pharmaceutical, cosmetic, and food industries. MAG and DAG are generally produced by chemical glycerolysis. Chemical catalysts have been shown to be more efficient, economical, and effective. This study summarizes and discusses the factors that affect the synthesis of MAG and…

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(This article belongs to Section Food Science & Technology (FST))
Open AccessArticle
8 Pages, 623 KB Download PDF

Environmental Entrepreneurship as an Innovation Catalyst for Social Change: A Systematic Review as a Basis for Future Research

Advances in Science, Technology and Engineering Systems Journal, Volume 6, Issue 1, Page # 393–400, 2021; DOI: 10.25046/aj060145
Abstract:

There are pressures to adopt sustainable behaviour more so in generating profits and benefiting the society to accelerate green efforts through a green framework. The overarching goal of the paper is premised through various works of literature, building the ecosystem the elements highlighted by most researchers in the field of environmental entrepreneurship. The various models…

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(This article belongs to the SP9 (Special Issue on Multidisciplinary Innovation in Engineering Science & Technology 2020) & Section Psychiatry (PSY))
Open AccessArticle
10 Pages, 1,822 KB Download PDF

A Model-Driven Digital Twin Framework Development for Sulfur Dioxide Conversion Units Simulation

Advances in Science, Technology and Engineering Systems Journal, Volume 6, Issue 2, Page # 122–131, 2021; DOI: 10.25046/aj060215
Abstract:

In the phosphate industry, sulfuric acid is a key compound in phosphoric acid and fertilizer production. Industrially, the sulfuric acid H2SO4 is made generally in a sequence of three main steps: burning liquid sulfur with air, catalytic oxidation of sulfur dioxide SO2 to sulfur trioxide SO3, and formation of H2SO4 by the reaction of H2O…

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(This article belongs to the SP10 (Special Issue on Multidisciplinary Sciences and Engineering 2020-21) & Section Environmental Sciences (ENS))
Open AccessArticle
8 Pages, 1,792 KB Download PDF

Challenges and New Paradigms in Conservation of Heritage-based Villages in Rural India -A case of Pragpur and Garli Villages in Himachal Pradesh

Advances in Science, Technology and Engineering Systems Journal, Volume 6, Issue 1, Page # 1112–1119, 2021; DOI: 10.25046/aj0601124
Abstract:

The research paper aims to focus on the issues and challenges in developing a sustainable model of an ideal heritage village project by using descriptive and empirical investigation methods. To capture the perception and understanding of the concept of sustainability of a Heritage Village, a mixed-methods approach was conducted by the researcher where document where…

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(This article belongs to the SP10 (Special Issue on Multidisciplinary Sciences and Engineering 2020-21) & Section Architectural Engineering (EAH))
Open AccessArticle
9 Pages, 1,808 KB Download PDF

Effect of Starch Oxidation Degree on the Properties of Hydrogels from Dialdehyde Starch and Polyvinyl Alcohol

Advances in Science, Technology and Engineering Systems Journal, Volume 5, Issue 6, Page # 1372–1380, 2020; DOI: 10.25046/aj0506165
Abstract:

Starches have been applied as biomaterials due to their wide availability and biocompatibility. These have also been modified by oxidation, resulting in dialdehyde starch (DAS), to improve their stability in water and mechanical properties. Cassava starch with a low oxidation degree has been introduced into hydrogels based on polyvinyl alcohol (PVA) to improve their properties.…

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(This article belongs to the SP10 (Special Issue on Multidisciplinary Sciences and Engineering 2020-21) & Section Polymer Science (PLS))
Open AccessArticle
6 Pages, 608 KB Download PDF

Photodecoloration of Methyl Orange Solution Assisted by ZrS3 Powders

Advances in Science, Technology and Engineering Systems Journal, Volume 4, Issue 1, Page # 165–170, 2019; DOI: 10.25046/aj040116
Abstract:

Zirconium trisulfide ZrS3 is a representative of transition metal polysulfides containing sulfur as S–1 in polysulfide, usually disulfide S22– groups. Semiconductive zirconium trisulfide which absorbs visible light near UV edge was considered as a possible photocatalyst. We experimentally studied photodecoloration of methyl orange in presence of ZrS3. It was shown for the first time that…

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(This article belongs to the SP6 (Special Issue on Recent Advances in Engineering Systems 2018-19) & Section Chemical Engineering (ENC))

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