Paper ID: JNSTTV4I101
Electrospun Nanofibers for Sustainable Water Filtration and Desalination: A Comprehensive Review.
S. M. Maruf Billah1,2,3, Hitu Biswas2, Mahmud Hasan Warsi2*, Md. Shahadat Hossain2,4 , Md. Tanimul Bari,5, Hasan Mazharul Haq1,2
- Department of Civil Engineering, Bangladesh University of Engineering and Technology, Dhaka, Bangladesh.
- Department of Yarn Engineering, Bangladesh University of Textiles, Dhaka, Bangladesh.
- Department of Textile Engineering, Northern University Bangladesh, Dhaka, Bangladesh.
- Department of Industrial and Production Engineering, Bangladesh University of Engineering and Technology, Dhaka, Bangladesh.
- Department of Textile Engineering, Primeasia University, Dhaka, Bangladesh.
*Corresponding Author’s E-mail: mahm77527@gmail.com
Abstract: Electrospun Nanofibers, Water Filtration, Desalination, Nanocomposites, Sustainability, Nanotechnology, Membranes. Sustainable and efficient water solution is a must need now a days, due to the global water crisis, exacerbated by rapid population growth, climate change, and environmental degradation. To address this challenge, electrospun nanofiber membranes have contributed to a great extent due to their unique properties. High surface area, tunable pore sizes, and potential for surface functionalization have enabled the membranes particularly suitable for water filtration and desalination applications. They offer advantages such as enhanced contaminant removal, improved energy efficiency, and lower operational costs. This review comprehensively explores the development and application of electrospun nanofiber membranes in water purification systems, including fabrication methods, material choices, and performance metrics. It focuses on innovations like nanoparticle incorporation to improve filtration and desalination efficiency. This review also compares the performance of electrospun nanofibers with traditional filtration technologies, such as activated carbon and reverse osmosis membranes, highlighting their superior capabilities. Furthermore, it addresses different issues like – sustainability concerns, issues of membrane fouling, high production costs, and scalability. Finally, the review offers insights into future research directions needed to overcome existing barriers and ensure their widespread adoption along with presenting the commercial potential and long-term viability of electrospun nanofiber membranes.
DOI: 10.5281/zenodo.15745428 View Full Text
Paper ID: JNSTTV4I102
Eco-friendly Washing of Denim Garments Using Enzymatic Treatments
Tasnia Akhter Tonu1, Imam Hossain1,2*
1 Department of Textile Engineering, Northern University Bangladesh, Dhaka-1230, Bangladesh
2 Department of Textile Engineering, Dhaka University of Engineering & Technology, Gazipur-1707, Bangladesh
*Corresponding Author’s E-mail: imam.te.duet@gmail.com
Abstract: Trimmings and accessories play a vital role in garment construction, with buttons standing out as one of the most crucial elements. Buttons come in various types, sizes, and materials, each offering distinct characteristics. The performance characteristics of buttons are typically evaluated through button pull strength tests, which measure their resistance to force. Thus, the primary aim of this research is to assess the factors influencing button pull strength. To achieve this objective, three different button sizes, two fabrics with varying GSM (grams per square meter), and three different stitch types have been selected for investigation. The breaking strength values of the different buttons have been measured to discern their performance under various conditions. The findings indicate a direct correlation between button pull strength and fabric GSM, button size, and the number of holes in the button. This study serves as a valuable resource for manufacturers, enabling them to select the most suitable button types based on the requirements of garment buyers.
DOI: 10.5281/zenodo.17617079 View Full Text
Paper ID: JNSTTV4I103
Water Quality Index and Correlation Analysis of River Water Parameters: Study on a Section of Turag River near Tongi Industrial Area
Sk. Moniruzzaman1*, Abdul Alim1, Md. Shamim Reza1, Khondaker Mohammod Shariful Huda2, Moinul Ahsan3, Aminul Islam Mishuk3
1Department of Environmental Science, University of South Asia, Dhaka-1348.
2Department of Geography and Environment, Jahangirnagar University, Savar, Dhaka-1342.
3Department of Textile Engineering, University of South Asia, Dhaka-1348.
*Corresponding Author’s E-mail: monirgeo.ju@gmail.com
ABSTRACT: Research on water quality analysis of physicochemical parameters, different water quality indices, water pollution monitoring etc. of different water bodies was conducted earlier; but recently, water pollution and its effects assessment with WQI model and Statistical tools such as: correlation and regression related research takes significant role for futuristic and detail analysis. This research deals with Water Quality Index and Correlation Analysis on water quality parameter of Turag River adjacent to Tongi industrial area; some selected physicochemical parameters (like as: pH, EC, TDS, TSS, DO, BOD5, and COD) are investigated herein. To know the state of Turag river water quality parameters, water samples were collected from four (04) sites near Tongi industrial area; in order to get the temporal changes, during both wet (October, 2023) and dry (March, 2024) season, 04 water samples were collected accordingly from 04 locations. After samples collection, it was measured, experimented in laboratory and analyzed to ascertain the water quality condition with WQI and correlation matrix through statistical analysis based on tested results of mentioned parameters. The results revealed almost every data of wet season are within standard level of DoE (ECR, 1997). But, During dry season, the values (EC, DO, BOD and COD) near Ultra Washing and Dyeing Ltd and (TSS, DO, BOD and COD) values near Zarina Composite Textile Industries Ltd. are not within the acceptable limit respectively; near Tongi Bridge and near Sajid Washing & Dyeing Ltd. the DO values are bellow the acceptable limit according to Inland Surface Water Standard values of DoE (ECR, 1997).The present study shows that, the WQI of o4 stations are within the range of (76-100) in dry season; which indicates water quality is Very Bad and in wet season, all station’s data are comparatively low and within the range of (51-75) which is indicating Bad water quality. The finding reported herein the concentration of DO is alarmingly low in the Turag River in dry season. Results also showed that, concentration of EC, TSS, BOD and COD are high dry season. According to WQI scale, in dry season the water quality of Turag river is comparatively very bad than wet season. To minimize the water pollution, it is required to take immediate steps from concern bodies.
DOI: 10.5281/zenodo.16479622 View Full Text
Paper ID: JNSTTV4I104
Investigating the Effect of Number of Needle for Lock and Chain Stitches on Seam Strength in 100% Cotton Twill Gabardine Fabrics
Md. Mazharul Islam1*, Md. Sourov Ahmmed1, Md. Meskatul Islam1, Abdullah all Shadat1, Md. Mehedi Ali1, Md. Al- Amin1, Md. Syful Islam1, Md. Mamun1
1Department of Textile Engineering, Northern University Bangladesh
*Corresponding Author’s E-mail: mazh999@gmail.com
Abstract: Seam strength is a vital factor influencing the durability and performance of garments. Among the various stitching techniques used in garment manufacturing, lock stitch and chain stitch are the most commonly employed to ensure seam integrity. Although prior studies have examined how stitch type and fabric affect seam strength, the influence of needle number has not been extensively studied. Understanding this effect is crucial for optimizing garment quality and production efficiency. This study examined how the number of needles impacts the seam strength of lock and chain stitches in 100% cotton twill gabardine fabric. The selected fabric was characterized by an ends per inch (EPI) of 126, picks per inch (PPI) of 58, a warp yarn count of 21 Ne, and a weft yarn count of 17 Ne. Fabric specimens were prepared according to the ISO 13935-2 standard. Stitching was performed using a universal sharp-point sewing needle sized 90/14 and a polyester core-spun thread with a ticket number of 40 (60 Tex). Both single and double-needle techniques were applied across lock stitch and chain stitch configurations. Seam strength was evaluated using a universal seam strength tester (Titan). Results demonstrated that double-needle stitched seams exhibited greater strength compared to single-needle seams in both warp and weft directions. Notably, the strength enhancement with double-needle stitching was not proportional to needle doubling, presenting increases of 18–27% in the warp direction and 8–11% in the weft direction. Failure analysis revealed seam rupture predominantly occurred near fabric edges stitched by the first needle, thereby constraining the reinforcing contribution of the second needle. These findings suggest that although double-needle stitching enhances seam strength, the benefits are relatively modest when balanced against increased production complexity and costs. Thus, manufacturers should consider these trade-offs when selecting stitching techniques to optimize seam performance and operational efficiency.
DOI: 10.5281/zenodo.16725009 View Full Text
Paper ID: JNSTTV4I105
The Impact of GSM on Bursting Strength of Knitted Fabric
Md. Salim Ahmed1*, Tanvir Mahmud1, G.M. Faysal1, Israth Jahan Jeni1
1Department of Textile Engineering, Northern University Bangladesh
*Corresponding Author’s E-mail: salimbutex039@gmail.com
Abstract: According to Bangladesh Export Promotion Bureau (EPB) statistics, in the last fiscal year (2022-2023) is that nearly $63.05 billion knitwear products were exported from Bangladesh, which is 3.42 % more than last year. A huge number of varieties of knit fabrics were produced by Bangladeshi knit manufacturers, among them, most of the products are single jersey plain or single jersey derivatives structure such as single lacoste, double lacoste, polo pique, fleece, etc. Grams per Square meter, commonly known as GSM, is one of the most important parameters for the knit fabric manufacturing process. The strength of the knit fabric is also an important consideration from the buyer’s perspective. In this present study, the authors found out how various knitted fabric GSM affects on the knit fabric bursting strength. We collected single jersey, lycra single jersey, interlock, waffle & 2X2 rib knitted fabric samples and measured their GSM values. After that, we analyzed fabric GSM on effect bursting strength of common knitted fabrics and found that higher GSM fabric shows higher bursting strength and vice versa. A study on the Impact of GSM Bursting Strength of Knitted Fabrics is done in this work. We have performed bursting strength tests on different GSM knitted fabrics.
DOI: 10.5281/zenodo.17660295 View Full Text
Paper ID: JNSTTV4I106
An Investigation into the Relationship between Stitch Length and Bursting
Strength in Single Jersey Weft Knitted Fabrics
Mohammad Mosharof Hossain1*, Md. Sanaullah Murad1, A.M. Riasat Alam1, Mir Mahbub Alam2
1Department of Textile Engineering, Northern University Bangladesh, Dhaka, Bangladesh
2 Production and Planning (Knitting), Knit concern group, Narayangong-1400, Bangladesh
*Corresponding Author’s E-mail: mm.hossain.tex@gmail.com
Abstract: Stitch length significantly influences the physical properties of single jersey weft-knitted fabrics, particularly density, elasticity, and bursting strength. Shorter stitch lengths result in denser fabrics with higher bursting strength, while longer stitch lengths produce looser, less durable structures. This relationship is critical for optimizing fabric performance and ensuring a balance between strength and flexibility. The study examines how variations in stitch length and fabric design impact bursting strength, a key property for dimensional stability in knit fabrics. Altering design elements, such as cams and needles, introduces challenges in maintaining consistent quality during bursting strength tests. The research highlights the role of fabric derivatives created by incorporating tuck loops alongside knit loops. Findings indicate that a higher concentration of tuck loops in either the wale or course direction reduces bursting strength. Additionally, the number of wales or courses within a design repeat affects this property. Analysis reveals that increasing stitch length decreases bursting strength, while shorter stitch lengths enhance it. Finished fabrics typically have lower bursting strength compared to their gray counterparts, due to processing and finishing effects. However, a higher proportion of knit loops in the fabric structure contributes to increased bursting strength. This study underscores the importance of understanding the interplay between stitch lengths, tuck loops and knit loops in achieving desired fabric performance and durability.
DOI: 10.5281/zenodo.17621066 View Full Text
Paper ID: JNSTTV4I107
Enzymatic Processing in Textile Manufacturing: A Cleaner Alternative
Md. Himel Mahmud1, Md. Ariful Islam1, S. M. Maruf Billah1, Md. Shohave Sarkar1, and Abdullah Al Fariz1*
1Department of Textile Engineering, Northern University Bangladesh, Dhaka, Bangladesh
*Corresponding Author’s E-mail: abdullahalfariz45@gmail.com
Abstract: There is increasing pressure on the textile sector, which is a vital component of global manufacturing, to embrace more sustainable and clean production methods. Traditional textile processing often relies on harsh chemicals, high energy input, and excessive water usage, contributing significantly to environmental degradation. Enzymatic processing has emerged as a promising alternative, offering eco-friendly and efficient solutions across various stages of textile manufacturing. This review explores the diverse roles of microbial enzymes—such as amylase, cellulase, pectinase, laccase, and protease—in applications including desizing, bio scouring, bleaching, bio-polishing, dyeing, and effluent treatment. Enzyme-based methods operate under mild conditions, reducing chemical load, energy consumption, and wastewater pollution while maintaining or enhancing fabric quality. The review also highlights enzymatic innovations in synthetic fiber modification, enzymatic dyeing, and laundry applications. Furthermore, enzyme technology enables integrated processes, shorter processing times, and compatibility with circular economy goals. Despite certain technical and scalability challenges, enzymatic processing represents a key driver for sustainable transformation in the textile sector. Continued research, industrial collaboration, and regulatory support are essential to fully leverage the potential of enzyme-based cleaner production systems.
DOI: 10.5281/zenodo.17621117 View Full Text
Paper ID: JNSTTV4I108
Computational Analysis of Nanoparticle Flow Dynamics in the 18th Generation of the Human Lung
Shanto Islam 1*, Taposh Ranjan Sarker 1, Mahtab U. Ahmmed 2
1Department of Textile Engineering, Southeast University
2Department of Mathematics, Jahangirnagar University
*Corresponding Author’s E-mail: shanto.islam@seu.edu.bd
Abstract: Nanoparticles, which are too small to be seen but can enter our bodies through breathing, cause damage to our lungs and air passageways, are degrading the quality of the air. They may ultimately result in serious health problems like asthma, COPD, and emphysema. The filtration system of the lung is investigated by modeling airflow and the movement of nanoparticles through it using fluid dynamics equations and Newton’s second law for particle motion. An explicit finite difference scheme and specialized MATLAB code are used to solve nonlinear equations and establish the effect of oscillation frequency, mean permeability, and Reynolds number on air and dust particle behavior. The results demonstrate that the air and particle flow rate increased continuously as the breathing rate, Reynolds number, and average permeability of the porous medium increased.
DOI: 10.5281/zenodo.17621151 View Full Text
Paper ID: JNSTTV4I109
Regulatory Push for Circularity: The Impact of EU Strategy for Sustainable and Circular Textiles
Md. Himel Mahmud1, Md. Ariful Islam1, S. M. Maruf Billah1, Md. Shohave Sarkar1, and Abdullah Al Fariz1*
1Department of Textile Engineering, Northern University Bangladesh, Dhaka-1230
*Corresponding Author’s E-mail: abdullahalfariz45@gmail.com
Abstract: The textile industry is one of the most resource-intensive and polluting sectors globally, driven by fast fashion and a linear production model that relies heavily on virgin materials and generates excessive waste. In response to the mounting environmental and social challenges, the European Union has introduced new Strategies toward Sustainable and Circular Textiles to accelerate the industry’s transition toward circularity. This review examines the regulatory instruments, policy frameworks, and strategic initiatives—like the Eco-design for Sustainable Products Regulation (ESPR), Extended Producer Responsibility (EPR), and Digital Product Passports—that aim to reduce environmental impacts, promote recycling, and encourage product longevity. It also explores the alignment of the EU strategy with broader sustainability goals, including the European Green Deal and global climate agreements. The study highlights both the transformative potential and implementation challenges of circular policies in the textile supply chain, emphasizing the need for multi-stakeholder collaboration, consumer responsibility, and supportive infrastructure. The paper concludes that regulatory frameworks play a pivotal role in reshaping the future of textiles and fostering a sustainable, closed-loop economy.
DOI: 10.5281/zenodo.17621367 View Full Text
Paper ID: JNSTTV4I110
Perishable Production Inventory System with a Level Dependent Demand and Offering Discount During Production Run
Md. Asrafi Al Mamun1*, Mohammad Ekramol Islam2
1Department of Mathematics, Birshreshtha Munshi Abdur Rouf Public College, Dhaka-1205, Bangladesh
2Department of Basic Science, Sonargaon University, Dhaka-1215, Bangladesh
*Corresponding Author’s E-mail: aam.kanon78@gmail.com
Abstract: This paper presents a comprehensive analysis of a perishable production inventory system with level-dependent demand, focusing on the application of a discount during the production phase. The model assumes no shortage, and the production rate exceeds the rate of demand, which is treated as a function of the inventory level. Throughout the entire cycle, deterioration is taken into account, and inventory is categorized into undecayed and decayed portions over different phases. A discount is applied to the un-decayed inventory during production run, which influences holding and decay costs. The aim is to develop a profit function in terms of quantity that incorporates these factors and optimize inventory policies. Analytical expressions for total cost and profit are derived. The results offer practical insights for improving profitability in inventory systems with perishable items under the given assumptions. Some numerical illustrations are derived and few tables and graphs are constructed in order to better representation of the results. Sensitivity analysis is performed in order to exhibit the model’s relevance to real-world situations, especially in controlling and managing perishable goods.
DOI: 10.5281/zenodo.17628360 View Full Text
Paper ID: JNSTTV4I111
Acid Wash Duration and its Impact on Denim Garment Properties: An Investigation into Optimal Washing Times
Imam Hossain1,2*, Md. Golam Mortuza Limon1,2, Azizur Rahman3, Md. Mehedi Hasan1, Azizul Hakim1, Md.Fahim Hossain Moon1
1 Department of Textile Engineering, Northern University Bangladesh, Dhaka-1230, Bangladesh
2 Department of Textile Engineering, Dhaka University of Engineering & Technology, Gazipur-1707, Bangladesh
3 Department of Microbiology, Primeasia University, Banani, Dhaka-1213, Bangladesh.
*Corresponding Author’s E-mail: imam.te.duet@gmail.com
Abstract: This study deals with the effect of acid wash treatment on denim garments by using three different washing time intervals 5, 10 and 15 minutes. By varying the washing time under fixed conditions, the study is undertaken for proposing an effective exposure time which will lead to optimum level of fading having least damage in fabrics. Acid washing throughout the denim industry is a popular finishing process used to give the fabric surface a certain vintage and faded effect. But the time taken for acid treatment is an important factor in both aesthetic appearance, and physical characteristics of the fabric. Performance tests such as rubbing fastness, pH value, tear strength, color fastness, shrinking and hand feel were carried out to investigate the variation of low quality factors with different acid wash durations in the present study. The results illuminate the relationship between the duration of acid exposure (longer or shorter) on both durability and comfort, as well as aesthetics in denim. Results show that washing with an acid during 10 min is the best compromise between visual and performance needs, as it allows to keep acceptable mechanical properties for the fabrics and colour fastness properties, pH of the system while providing a faded appearance more visually satisfying.