Journal of Sustainable Environment

Assessing Electricity-Driven Emissions: A Sectoral Dual Model Approach

2025-11-26T08:49:44+00:00

One of the major issues of environment is of hazardous gas emissions. The current study focuses on the emissions of carbon dioxide emissions and other greenhouse gas emissions, which is released by three consumption sectors that are household, commercial and industrial. The time period for the study has been chosen to be 1972-2022. Stationary test was conducted to infer the appropriate methodology for the model. All the variables were found to be stationary at first difference except for electricity consumption household which is found stationary at level. Thus, the appropriate model for carbon dioxide emissions would be Autoregressive distributive Lag model (ARDL). While when the bounds test for the model of other greenhouse gasses was conducted no co-integration was found therefore, only short run results were reported. For the case of carbon dioxide emissions electricity consumption household and electricity consumption commercial are significant in long run.

Transforming Plastic Waste into Durable Tiles: A Sustainable Recycling Approach

2025-11-26T08:49:44+00:00

With the harmful impact of plastic waste on the environment, there is a growing need to utilize products fabricated from recycled plastic. This project aims to utilize LDPE waste to produce tiles. There are engineering and environmental benefits in utilizing plastic waste for the manufacturing of tiles. The improper treatment and disposal of non-biodegradable plastic waste is huge concern in most developing countries. LDPE plastic waste was heated at temperatures ranging from 180°C to 250°C.

Plastic waste tiles proved to be stronger, durable and cost-effective as the raw materials used is trash. The discarded plastic waste directly discharged into the environment without any proper disposal. However, their non-biodegradable state, they are a significant threat to the environment. Recycling plastic waste into other products minimizes its size and effect. The Plastic tile samples have been tested for density, Tensile Strength, Elongation, Melt flow Index, and Hardness according to ASTM Standard Testing procedures.

A Review of Environmental, Economic, and Application Aspects of Green Hydrogen Production Technologies

2025-11-26T08:49:44+00:00

Hydrogen (H₂) has gained significant attention as a sustainable energy carrier capable of addressing climate change and energy security concerns. This review provides a comprehensive evaluation of the hydrogen value chain, technical and economic viability, environmental significance, and technology readiness level (TRL) of each system, highlighting their advantages and limitations Despite rapid progress, the widespread adoption of green hydrogen is constrained by high production costs, durability challenges, and infrastructural gaps. The review concludes by identifying potential pathways to reduce levelized cost of hydrogen (LCOH), improving electrolyzer efficiency, and expanding the role of hydrogen in decarbonizing transportation and industrial sectors.

Growth Response of Tomato (Solanum Lycopersicum) to Seaweed Liquid Fertilizer (SLF) Derived from Sargassum tenerrimum

2025-11-26T08:49:44+00:00

Pakistan cultivates a wide variety of crops across its regions and also has a coastal strip rich in seaweed vegetation. Tomato is one of the most widely consumed crops in Pakistan, used in many ways. Sindh and Balochistan are the leading provinces with the highest tomato yields. Since seaweeds enhance overall crop quality and yield, this study examines the effects of SLF derived from brown seaweed Sargassum tenerrimum collected from the Karachi coast on tomato plants. The SLF was tested at three different concentrations, 1%, 2%, and 3%, as a foliar spray. The results indicate that 3% SLF concentration can be used to increase tomato yield, as it not only improved tomato yield but also significantly increased shoot length, plant height, number of leaves, and leaf area.

Optimizing Zinc Nutrition for Maize (Zea mays L.) Yield in two Contrasting Soil Series of Sindh

2025-11-26T08:49:44+00:00

A pot study was carried out to determine the effects of different levels of zinc on growth and fodder yield of maize grown in pacca and sultanpur soil series. The research was conducted in a wire house at the department of soil science, sindh Agriculture University Tandojam. The research was laid out in two factor completely randomized design arrangement having three replications. Factor A consisted soil series (02), i.e. S₁: Pacca soil series and S₂: Sultanpur soil series and factor B were assigned with various levels of zinc. The recommended doses of N, P and K were applied @ 170 kg N ha^-1, 85 kg P₂O₅ ha^-1 and 60 kg K₂O ha^-1 in combination with different levels of zinc sulphate @ 0.0, 2.5, 5.0, 7.5 and 10.0 kg ZnSO₄ ha^-1 at the time of sowing in all treatments in Pacca and Sultanpur soil series. The soil under study of both soil series were silt loam in texture in Pacca soil series, sandy loam in Sultanpur soil series, non-saline, alkaline in nature, poor in organic matter, moderately calcareous in both soil series. Moreover, both soil series are low in total nitrogen and available phosphorus, while Pacca soil series was medium in potassium and Sultanpur soil series was adequate in potassium. The response of zinc sulphate on maize growth revealed that Sultanpur soil series was more prominent in zinc content of soil and leaf samples of maize as compared to Pacca soil series.The experimental results showed that higher seed germination (%) at the level of 7.5 kg ZnSO₄ ha^-1 and application of 10.0 kg ZnSO₄ ha^-1 has resulted higher plant height, thicker stem girth, maximum number of green leaves, less number of dry leaves and maximum green fodder yield. Furthermore, it indicated higher zinc content in plant and soil. Sultanpur series remained more efficient then Pacca soil series in almost all recorded parameters. It was obvious from study that 10.0 kg ZnSO₄ ha^-1 may be considered for getting maximum fodder yield of maize.