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Environmental Engineering: Recent submissions

Now showing items 261-280 of 329

Assesment of Solar Photovoltaic Water Pumping of Wasa Tube Wells for Quetta Valley Aquifer

Muhammad Saydal Khan (National University of Sciences and Technology, 2019)

The unplanned use of ground water resources has led to the deterioration of water quality and quantity in Quetta valley. Water shortage in the region was further aggravated by the drought that hit the area during 1998-2004, ...
Synthesis of Formic Acid from Carbon Dioxide Absorption

Muhammad Hanan Masood (National University of Sciences and Technology, 2019)

High temperature and warming are growing environmental issues in Pakistan. The main reason for this is the releases of carbon dioxide from industrial, transportation and various anthropogenic activities. Carbon dioxide is ...
Upconcentration of Domestic Wastewater through Biosorption Sedimentation Process

Muhammad Ali (National University of Sciences and Technology, 2019)

This study demonstrates a feasible and novel design of up-concentration of domestic sewage through Biosorption-Sedimentation process (BSP) for maximum energy production via anaerobic digestion in later stage. System was ...
Performance Evaluation of Fertilize-Drawn Forward Osmosis Membrane Bioreactor Treating Domestic Wastewater

Muhammad Adnan (National University of Sciences and Technology, 2018)

Reverse solute transport (RSF) of ions inside the bioreactor from the draw solution is the main problem of forward osmosis (FO). This RSF is significantly reduced when fertilizers with anions of larger hydrated diameter ...
Investigating use of metal-modified HZSM-5 catalyst to upgrade liquid yield in co-pyrolysis of Wheat Straw and Polystyrene

Madiha Razzaq (National University of Sciences and Technology, 2019)

Co-pyrolysis of wheat straw (WS) and polystyrene (PS) at a weight ratio of 1:1 was conducted in a fixed bed reactor. The effect of ex-situ application of HZSM-5 and its metal modified versions (MZSM-5s) on organic liquid ...
Effect of Hrt on the Performance of Dual Chamber Continuous Flow Microbial Fuel Cell (Mfc) Treating Domestic Wastewater

Irfan Ahmad (National University of Sciences and Technology, 2019)

Water scarcity has become the worldwide issue. In many applications such as crop irrigation, groundwater recharge and industrial processes, there is an increase in demand for domestic wastewater reclamation and recycling ...
Co-Pyrolysis of Sugarcane Bagasse and Polystyrene with Ex-Situ Catalytic Bed of Metal Oxides / HZSM-5 with Focus on Liquid Yield

Hera Iftikhar (National University of Sciences and Technology, 2019)

Catalytic co-pyrolysis of sugarcane bagasse (SCB) and polystyrene (PS) was conducted in a fixed bed reactor over HZSM-5, metal oxide (MgO, CaO) and dual catalyst HZSM-5:CaO, HZSM-5:MgO combinations. Effect of microporous ...
Efficient Removal of Oil, Fats and Grease from Domestic Wastewater for Water Reuse with Energy Generation as Fuel

Ehsan Mustafa Hashmi (National University of Sciences and Technology, 2019)

wastewater effluents contain oils, fats and greases which result in choking of the water distribution systems. These problems arise due to the issues like temperature differences in wastewater flow and flow channel structural ...
Catalytic and Non-Catalytic Co-Pyrolysis of Corn Stalk and Polystyrene with a focus on Liquid Yield and Quality

Bushra Muneer (National University of Sciences and Technology, 2019)

In this study non-catalytic and catalytic co-pyrolysis of Corn Stalk (CS) and Polystyrene (PS) was conducted in a fixed bed reactor at 500C (selected based on TGA results) to evaluate the effect of feedstock blend ratio, ...
Effect of Oxygen Storage Component (Ceo2) on Catalytic Properties and Performance of Co3o4/Tio2 for Three Way Catalytic Activity Under Real Engine Operating Conditions

Bilal Asif (National University of Sciences and Technology, 2019)

Three-way catalytic converter (TWC) is a primary emission control technology that allows simultaneous conversion of three major exhaust gas pollutants i.e.CO, unburned hydrocarbons (HC), and NOx into harmless compounds. ...
Performance Evaluation of Lab Scale Anaerobic Membrane Bioreactor for Domestic Wastewater Treatment

Alia Aslam (National University of Sciences and Technology, 2019)

The aim of this study was to evaluate the applicability of lab scale anaerobic membrane bioreactor (AnMBR) for domestic wastewater treatment. In initial stage, the hydraulic retention time (HRT) of lab scale continuously ...
Biogas Production Through Dry Anaerobic Digestion Of Waste Sludge

Ahmed Talal (National University of Sciences and Technology, 2019)

A single stage pilot scale anaerobic reactor of 50 Litter volume was constructed to conduct dry anaerobic co-digestion of sludge and rice husk. Reactor was started with batch start-up phase followed by semi-continuous phase. ...
Decentralized Wastewater Treatment System (DEWATS or DWTS) for Medium Strength Domestic Wastewater

Aamir Khan (National University of Sciences and Technology, 2019)

Wastewater collection and treatment has always been a challenge for developing countries because of lack of infrastructure for transport and treatment. Most of the areas in developing countries lack proper sanitation ...
Effect of Alkaline and Photocatalysis assisted Alkaline Pretreatment on Characteristics and Biogas Production of Rice Straw

Mariam Sabeeh (National University of Sciences and Technology, 2020)

To overcome recalcitrant nature and investigate enhancement of biogas production of rice straw (RS), it was subjected to pretreatment under mild conditions. Alkaline pretreatment using sodium hydroxide (NaOH), photocatalytic ...
Enhancing Biogas Production From Wheat Straw Through Titanium Dioxide Assisted Alkaline Pretreatment

Asma Imam Khan (National University of Sciences and Technology, 2020)

A huge quantity of lignocellulosic biomass is generated in Pakistan and can be used for sustainable production of biogas by anaerobic digestion (AD). However recalcitrant structure of lignocellulosic biomass is the main ...
Fresh Water Generation from Saline &Contaminated Textile Wastewater using an Active Solar Still Coupled with a Solar Pond System

Adnan Tariq (National University of Sciences and Technology, 2020)

More than 70 % of the available water in Pakistan is unsafe for drinking purposes as per WHO guidelines. The situation is alarming in Sindh and southern Punjab, as the TDS level of more than 57% of raw water is greater ...
Study Related to Groundwater Contamination of Sillanwali (District Sargodha) and its Health Impacts

Adan Fatima Javed (National University of Sciences and Technology, 2020)

Pakistan is a country with water intensive economy as most of its farmland is irrigated through a canal system, but available resources are getting adversely affected due to issues like wastage of water, rapid population ...
Effect of Alkaline Pretreatment and Iron Oxide Nanoparticles on Biogas Production From Rice Straw

Muhammad Junaid Khalid (National University of Sciences and Technology, 2018)

One of the hurdles in the use of agricultural residues for biogas production is their recalcitrance to biodegradation. For this purpose, agricultural residues are pretreated before their anaerobic digestion. Furthermore, ...
Development of Driving Cycle for the Estimation Of Vehicular Exhaust Emissions and Fuel Consumption of Islamabad

Muhammad Jahanzaib (National University of Sciences and Technology, 2018)
Effect of Different Substrates and Concentrations on the Performance of Double Chamber Microbial Fuel Cell

Zia Ullah (National University of Sciences and Technology, 2017)

Microbial fuel cell (MFC) provides new opportunities for energy generation and wastewater treatment through conversion of organic matter into electricity by electrogenic bacteria. This study investigates the effect of ...

Now showing items 261-280 of 329

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