Optimal design for adiabatic pipes using vacuum at cryogenic temperatures

Lee, Jae‐Hoon; Kim, Si-Pom; Jeon, Rock-Won

doi:10.20474/-jater2.1.2

Cited by 2 publications

(2 citation statements)

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“…However, the most utilized extraction methods are chemical processes, considering their efficiency in achieving a high degree of deacetylation (DDA). Moreover, demineralization and deprotonation of the shells in various extraction methods still utilize chemical processes (Lee et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Techniques in chitosan extraction from indigenous crab and utilization in bio-filtration of crude oil polluted water

Nwogu,

Udebuani,

Ugwu

et al. 2023

SJES

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The techniques for chitosan extraction from indigenous crabs were assessed using physicochemical properties of the chitosan, and its utilization in the treatment of crude oil polluted water was investigated. Physicochemical properties, heavy metal analytic method (AAS), and hydrocarbon analysis (GC-MS method) of the water samples were employed for this investigation. Results obtained from the physical and chemical properties of the chitosan extracted from indigenous crabs (Scylla species) showed a comparable percentage yield (53% and 50%) compared to synthetic chitosan (72%). The pH values obtained from the chitosan ranged from 6.9 – 13.0, while the percentage degree of deacetylation (DDA) ranged from 60 – 75%. The water quality obtained from Ochani River, filtered with chitosan, yielded the best result with chitosan C compared to chitosan B. The heavy metal content in the polluted Ochani River was totally removed with the control (synthetic chitosan A) compared to chitosan C, which showed a comparably reduction. However, the bio-filtration with chitosan B also revealed better reduction compared to chitosan A. The study established that irrespective of the crude method applied in the extraction of the chitosan from indigenous crabs, its efficacy in treating crude oil-polluted Ochani River was highly impactful.

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Section: Introductionmentioning

confidence: 99%

Techniques in chitosan extraction from indigenous crab and utilization in bio-filtration of crude oil polluted water

Nwogu,

Udebuani,

Ugwu

et al. 2023

SJES

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“…Ac-cording to National Oceanic and Atmospheric Administration (NOAA), it is worth researching on the expanding of worldwide temperature as it is one component of observed global climate change. The rise of the world's surface temperature has brought worldwide concern and is presently comprehended as one of the vital challenges confronted by human being (Lee, Kim, & Jeon, 2016;Makkar, 2013). The biggest challenge the world needs to deal with is global warming but till date, the solution for this crisis in shielding our common future stay insuf icient.…”

Section: Introductionmentioning

confidence: 99%

An exploratory study on Indigenous Knowledge of ‘Green Technology’ (IKGT) among orang asli in Malaysia

2018

J. adv. humanit. soc. sci.

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Presently there are numerous environmental issues and challenges of the nation that need to be addressed at all levels with the coorperation of various parties to protect the earth life support systems. Orang Asli Indigenous Knowledge of 'Green Technology' (IKGT) is a naturalistic and environmentally friendly technology which is used to conserve and reduce the human impact on the earth as well as to create a way of sustainable development. This study aims to examine the use of Orang Asli indigenous knowledge of their 'green technology' to practice environmental sustainability and conserve natural resources now and later on to make the earth 'greener'. The study employed a descriptive case study qualitative approach which used in-depth interview, ield observation, and document analysis as an exploration instrument. The design of the conceptual framework was framed based on 2 themes; Indigenous Medicine (IM) and Indigenous Handicraft (IH). This research was carried out at Orang Asli settlements in 4 states: i) Selangor, ii) Perak, iii) Terengganu and iv) Pahang which involved six informants aged 30 and older. The indings of the study will be valuable for the purpose of sharing Orang Asli IKGT and provide the main strategies in which the bene its of utilizing their green practices in the future world would overweight its cost. Orang Asli IKGT's framework can be used by the current society as a guide to lessen carbon footprint and others harms evolved. In addition, it serves as a basic or medium for all levels; institutional, regional, national, and local scales which aspire to launch sustainability programs locally or internationally as well as expanding economic and market forces while safeguarding cultural diversity.

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Optimal design for adiabatic pipes using vacuum at cryogenic temperatures

Cited by 2 publications

References 0 publications

Techniques in chitosan extraction from indigenous crab and utilization in bio-filtration of crude oil polluted water

Techniques in chitosan extraction from indigenous crab and utilization in bio-filtration of crude oil polluted water

An exploratory study on Indigenous Knowledge of ‘Green Technology’ (IKGT) among orang asli in Malaysia

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