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Article
Publication date: 1 August 2015

Karthikeyan M Ramasamy

Organic cotton, which is produced without any chemical fertilizers and pesticides, is playing a vital role in creating a less harmful environment. An investigation of the…

125

Abstract

Organic cotton, which is produced without any chemical fertilizers and pesticides, is playing a vital role in creating a less harmful environment. An investigation of the properties of weft knitted fabrics produced from organically made cotton vis-à-vis regular cotton knitted fabric is reported. The yarn is made with both organically produced and regular cotton, and the fabric is knitted by using single jersey machines. The fabrics are subsequently dyed by using natural dyes. The naturally dyed knitted fabrics are examined for shrinkage, bursting strength, abrasion resistance, and colour fastness properties. The result shows that the knitted fabrics produced from organically grown cotton is superior in performance in comparison with fabrics produced from regular cotton.

Details

Research Journal of Textile and Apparel, vol. 19 no. 3
Type: Research Article
ISSN: 1560-6074

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Article
Publication date: 2 March 2022

Maryam Khashij, Mohammad Hossein Salmani, Arash Dalvand, Hossien Fallahzadeh, Fatemeh Haghirosadat and Mehdi Mokhtari

This paper aims to investigation of processes for Pb2+ elimination from water/wastewater as a significant public health issue in many parts of world. The removal of Pb2+ ions by…

307

Abstract

Purpose

This paper aims to investigation of processes for Pb2+ elimination from water/wastewater as a significant public health issue in many parts of world. The removal of Pb2+ ions by various nanocomposites has been explained from water/wastewaters. ZnO-based nanocomposites, as eco-friendly nanoparticles with unique physicochemical properties, have received increased attention to remove Pb2+ ions from water/wastewaters.

Design/methodology/approach

In this review, different ZnO-based nanocomposites were reviewed for their application in the removal of Pb2+ ions from the aqueous solution, typically for wastewater treatment using methodology, such as adsorption. This review focused on the ZnO-based nanocomposites for removing Pb2+ ions from water and wastewaters systems.

Findings

The ZnO-based nanocomposite was prepared by different methods, such as electrospinning, hydrothermal/alkali hydrothermal, direct precipitation and polymerization. Depending on the preparation method, various types of ZnO-based nanocomposites like ZnO-metal (Cu/ZnO, ZnO/ZnS, ZnO/Fe), ZnO-nonmetal (PVA/ZnO, Talc/ZnO) and ZnO-metal/nonmetal (ZnO/Na-Y zeolite) were obtained with different morphologies. The effects of operational parameters and adsorption mechanisms were discussed in the review.

Research limitations/implications

The findings may be greatly useful in the application of the ZnO-based nanocomposite in the fields of organic and inorganic pollutants adsorption.

Practical implications

The present study is novel, because it investigated the morphological and structural properties of the synthesized ZnO-based nanocomposite using different methods and studied the capability of green-synthesized ZnO-based nanocomposite to remove Pb2+ ions as water contaminants.

Social implications

The current review can be used for the development of environmental pollution control measures.

Originality/value

This paper reviews the rapidly developing field of nanocomposite technology.

Details

Pigment & Resin Technology, vol. 52 no. 4
Type: Research Article
ISSN: 0369-9420

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Article
Publication date: 23 September 2022

Dinesh R., Stanly Jones Retnam, Dev Anand M. and Edwin Raja Dhas J.

The demand for energy is increasing massively due to urbanization and industrialization. Due to the massive usage of diesel engines in the transportation sector, global warming is…

92

Abstract

Purpose

The demand for energy is increasing massively due to urbanization and industrialization. Due to the massive usage of diesel engines in the transportation sector, global warming is increasing rapidly. The purpose of this paper is to use hydrogen as the potential alternative for diesel engine.

Design/methodology/approach

A series of tests conducted in the twin cylinder four stroke diesel engine at various engine speeds. In addition to the hydrogen, the ultrasonication is applied to add the nanoparticles to the neat diesel. The role of nanoparticles on engine performance is effective owing to its physicochemical properties. Here, neat diesel mixed 30% of biodiesel along with the hydrogen at the concentration of 10%, 20% and 30% and 50 ppm of graphite oxide to form the blends DNH10, DNH20 and DNH30.

Findings

Inclusion of both hydrogen and nanoparticles increases the brake power and brake thermal efficiency (BTE) of the engine with relatively less fuel consumption. Compared to all blends, the maximum BTE of 33.3% has been reported by 30% hydrogen-based fuel. On the contrary, the production of the pollutants also reduces as the hydrogen concentration increases.

Originality/value

Majority of the pollutants such as carbon monoxide, carbon dioxide and hydrocarbon were dropped massively compared to diesel. On the contrary, there is no reduction in nitrogen of oxides (NOx). Highest production of NOx was witnessed for 30% hydrogen fuel due to the premixed combustion phase and cylinder temperatures.

Details

Aircraft Engineering and Aerospace Technology, vol. 96 no. 8
Type: Research Article
ISSN: 1748-8842

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Article
Publication date: 4 June 2024

Adebowale Martins Obalalu, Adil Darvesh, Lateefat Aselebe, Sulyman Olakunle Salawu and Kazeem Issa

The primary focus of this study is to tackle a critical industry issue concerning energy inefficiency. This is achieved through an investigation into enhancing heat transfer in…

20

Abstract

Purpose

The primary focus of this study is to tackle a critical industry issue concerning energy inefficiency. This is achieved through an investigation into enhancing heat transfer in solar radiation phenomena on a curved surface. The problem formulation of governing equations includes the combined effects of thermal relaxation, Newtonian heating, radiation mechanism, and Darcy-Forchheimer to enhance the uniqueness of the model. This research employs the Cattaneo–Christov heat theory model to investigate the thermal flux via utilizing the above-mentioned phenomenon with a purpose of advancing thermal technology. A mixture of silicon dioxide (SiO_2)\ and Molybdenum disulfide (MoS_2) is considered for the nanoparticle’s thermal propagation in base solvent propylene glycol. The simulation of the modeled equations is solved using the Shifted Legendre collocation scheme (SLCS). The findings show that, the solar radiation effects boosted the heating performance of the hybrid nanofluid. Furthermore, the heat transmission progress increases against the curvature and thermal relaxation parameter.

Design/methodology/approach

Shifted Legendre collocation scheme (SLCS) is utilized to solve the simulation of the modeled equations.

Findings

The findings show that, the solar radiation effects boosted the heating performance of the hybrid nanofluid. The heat transmission progress increase against the curvature and thermal relaxation parameter.

Originality/value

This research employs the Cattaneo–Christov heat theory model to investigate the thermal flux via utilizing the above-mentioned phenomenon with a purpose of advancing thermal technology.

Details

Multidiscipline Modeling in Materials and Structures, vol. 20 no. 4
Type: Research Article
ISSN: 1573-6105

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Article
Publication date: 4 June 2018

Pradipta Chandra, Titas Bhattacharjee and Bhaskar Bhowmick

The purpose of this paper is to explore and identify the indicators of institutional barriers hindering the technology transfer training (TTT) process behind the technology…

422

Abstract

Purpose

The purpose of this paper is to explore and identify the indicators of institutional barriers hindering the technology transfer training (TTT) process behind the technology adoption lag affecting the agricultural output in India through development of a scale.

Design/methodology/approach

Quantitative technique has been followed for data collection through a close-ended questionnaire scored on the seven-point Likert scale. The sample size was considered as 161; target respondents were farmers and farmer-centric individuals. Data were analyzed using an exploratory factor analysis technique.

Findings

Factor analysis revealed that there are three significant factors related to TTT process, namely, comprehension, customization and generalization, which are liable for institutional barriers in technology adoption by farmers.

Research limitations/implications

The main limitation is biasness from both respondents’ end and interviewer’s end might exist during survey due to differences in perception.

Social implications

The key beneficiaries from this research are the small and marginal farming community in India. They can enhance their productivity through an appropriate training process. Corporates will show interest in investment through the mechanism of corporate social responsibility.

Originality/value

Under this study, the factors of the institutional barriers from the farmers’ perspective are being introduced as a new research contribution, especially for the resource crunch area of Jangalmahal and other similar places in India.

Details

Journal of Agribusiness in Developing and Emerging Economies, vol. 8 no. 2
Type: Research Article
ISSN: 2044-0839

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