Sajjad Ahmad

Government College University, Lahore

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Rao Arsalan Khushnood

National University of Sciences and Technology

Sara Musaddiq

The Women University Multan

Sadia Iqbal

Lahore Garrison University

Anwar Khitab

Mirpur University of Science and Technology

Zahoor H. Farooqi

University of the Punjab

Urooj Shuaib

Government College University, Lahore

Shazim Ali Memon

Nazarbayev University

Muhammad Aslam

University of Education

Muhammad Usman

National University of Sciences and Technology

Ali Sikandar Rasheed Khan

Mirpur University of Science and Technology

Cooperative Institutions

Mirpur University of Science and Technology

Islamia University of Bahawalpur

National University of Sciences and Technology

University of Lahore

University of Agriculture Faisalabad

The Women University Multan

Quaid-i-Azam University

Government College University, Lahore

Polytechnic University of Turin

International Islamic University, Islamabad

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Journal of Hydrologic Engineering (2012)

Ajay Kalra Lanhai Li Xuemei Li Sajjad Ahmad

AbstractIncreasing global warming has led to the incremental retreat of glaciers, which in turn affects the water supply of the rivers dependent on glacier melts. This is further affected by the increases in flooding that is attributable to heavy rains during the snowmelt season. An accurate estimation of streamflow is important for water resources planning and management. Therefore, this paper focuses on improving the streamflow forecast for Kaidu River Basin, situated at the north fringe of Yanqi basin on the south slope of the Tianshan Mountains in Xinjiang, China. The interannual and decadal scale oceanic-atmospheric oscillations, i.e., Pacific decadal oscillation (PDO), North Atlantic oscillation (NAO), Atlantic multidecadal oscillation (AMO), and El Nino–southern oscillation (ENSO), are used to generate streamflow volumes for the peak season (April–October) and the water year, which is from October of the previous year to September of the current year for a period from 1955–2006. A data-driven model...

10.1061/(asce)he.1943-5584.0000708

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Citations (32)

Improved fracture response and electromagnetic interference shielding effectiveness of cementitious composites incorporating pyrolytic bagasse fibers and pine needles

Construction and Building Materials (2023)

Abdullah Iftikhar Rao Arsalan Khushnood Anwar Khitab Sajjad Ahmad

Bagasse

Thermogravimetric analysis

Cementitious

10.1016/j.conbuildmat.2023.130722

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Citations (4)

Production of Biochar and Its Potential Application in Cementitious Composites

Crystals (2021)

Anwar Khitab Sajjad Ahmad Riaz Akhtar Khan Muhammad Tausif Arshad Waqas Anwar

In cement composites, usually, reinforcement is provided to restrict the crack development and their further propagation under service conditions. Typically, reinforcements utilized in cementitious composites range from nanometer scale to millimeter scale by using nano-, micro-, and millimeter-sized fibers and particles. These reinforcements provide the crack arresting mechanisms at the nano/microscale and restrict the growth of the cracks under service loads, but usually, the synthesis of nano/microfibers, and afterward their dispersion in the cementitious materials, pose difficulty, thus limiting their vast application in the construction industry. Carbonaceous inerts are green materials since they are capable of capturing and storing carbon, thus limiting the emission of CO2 to the atmosphere. In the present study, a comprehensive review of the synthesis of low cost and environmentally friendly nano/micro carbonaceous inerts from pyrolysis of different agricultural/industrial wastes, and afterward, their application in the cementitious materials for producing high performance cementitious composites is presented, which have the potential to be used as nano/micro reinforcement in the cementitious matrix.

Cementitious

Microscale chemistry

Microfiber

Environmentally Friendly

Limiting

10.3390/cryst11050527

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Citations (27)

Polymer microgel-based gold nanocomposites for reductive degradation of azo dyes

Desalination and Water Treatment (2023)

Mehrab Khan Sadia Iqbal Sara Musaddiq Fauzia Iqbal Javeria Kanwal

Stimuli responsive polymer microgels have gained attention due to their envisioned applications.The aim of this study is to organize Au-based poly(N-isopropylmethacrylamide-co-acrylamide) [Au-p-(NIPMAM-co-AAm)] microgels and to analyse their degradation potential.Microgels were analyzed via UV-Visible (ultraviolet-visible) spectroscopy, X-ray diffraction and Fourier-transform infrared spectroscopy.Reductive degradation of Congo red (CR) was done to evaluate the catalytic activity of Au-based p-(NIPMAM-co-AAm) microgels that converts CR into less toxic products, that is, sodium 4-amino-1-naphthalene sulfate and biphenyl.Kinetic study of reaction reveals first order reaction and by altering the concentration of Congo red (CR) dye from 0.02 to 0.095 mM, the change in apparent rate constant (k app ) was noted from 0.0027 to 0.1235 min -1 .Whereas the change in value of rate constant (k app ) was observed from 0.0716 to 0.2931 min -1 as catalytic dose was changed from 0.06 to 0.1 mL (60-100 µL) at certain temperature.Reduction efficiency of recycled Au-based p-(NIPMAM-co-AAm) was also deliberated and not any remarkable reduction was observed in the percentage catalytic efficiency of nanocomposite until four cycles.

Degradation

10.5004/dwt.2023.29782

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Citations (1)

Techno-economic feasibility of solar based desalination through reverse osmosis

Desalination (2020)

Abdul Ghafoor Tanveer Ahmed A. Munir Chaudhry Arslan Sajjad Ahmad

Geothermal desalination

Solar Desalination

10.1016/j.desal.2020.114464

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Citations (55)

Solar driven photocatalytic degradation of organic pollutants via Bi2O3@reduced graphene oxide nanocomposite

Desalination and Water Treatment (2021)

Sadia Iqbal Maria Iqbal Aqsa Sibtain Atia Iqbal Zahoor H. Farooqi

Degradation

10.5004/dwt.2021.26796

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Citations (12)

Utilization of sugarcane bagasse ash as cement replacement for the production of sustainable concrete – A review

Construction and Building Materials (2020)

Muhammad Jahanzaib Khalil Muhammad Aslam Sajjad Ahmad

Bagasse

Properties of concrete

10.1016/j.conbuildmat.2020.121371

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Citations (109)

Effective use of sawdust for the production of eco-friendly and thermal-energy efficient normal weight and lightweight concretes with tailored fracture properties

Journal of Cleaner Production (2018)

Wisal Ahmed Rao Arsalan Khushnood Shazim Ali Memon Sajjad Ahmad Waqas Latif Baloch

Sawdust

Shrinkage

Environmentally Friendly

10.1016/j.jclepro.2018.03.009

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Citations (83)

Photocatalytic and Antibacterial Potential of Chitosan Supported Nickel Oxide/Zinc Oxide Composite Synthesized by Alcohothermal Method

Water Air & Soil Pollution (2023)

Amna Yasin Tousif Hussain Riaz Ahmad Urooj Shuaib Muhammad Amjad

Non-blocking I/O

Nickel oxide

10.1007/s11270-023-06596-y

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Citations (2)

Tailoring the properties of nanocrystalline multiferroic BiFeO3 by simultaneous substitution of Bi3+ and Fe3+ metal cations for enhanced visible-light-driven photocatalysis

Desalination and Water Treatment (2019)

Sajjad Ahmad Muhammad Suleman Sara Musaddiq Najeeb Al‐Khalli Philips O. Agboola

Multiferroic ceramics (BiFeO 3 ) co doped with Yb and Ni cations (Bi 1-x Yb x Ni y Fe 1-y O 3 ) were synthesized via micro-emulsion route.The dopant (Yb and Ni) contents were fixed x = 0.0 < x >0.125 and y = 0.0 < x >0.25 for six different compositions.The fabricated ceramics were examined with various techniques to index certain features such as crystal habitat, electrical, dielectric, magnetic, and photocatalytic properties.Fourier-transform infrared spectroscopy, X-ray diffraction (XRD), ultraviolet/visible spectroscopy, impedance analyzer constant, current-voltage (I-V) behavior, and vibrating sample magnetometer (VSM).XRD crews revealed a highly crystalline rhombohedral (R3c) structure growth on inclusion of ytterbium and nickel cations in BiFeO 3 ceramics.However, on substituent concentrations, x = 0.125, y = 0.25 moles, the diffraction pattern (111) against 2θ = 27° showed a phase transformation from rhombohedral to orthorhombic phase.Nanocrystalline morsels were harvested with sizes ~21-23 nm.The fabricated ceramics exhibited the resistivity 1.4 × 10 9 Ω cm -1 .The VSM analysis of fabricated ceramics revealed a notable enhancement of magnetization up to 1.51 emu/g for x = 0.1, y = 0.2 moles.The ceramic composition Bi 0.90 Yb 0.10 Ni 0.2 Fe 0.80 O 3 exhibited the minimum optical band gap 1.25 eV, and these particles showed the photocatalytic activity of >64%.The fabricated ceramic inherited magnetic merits and could be easily removed by applying conventional magnetic bar.

Nanocrystalline material

10.5004/dwt.2019.23562

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Citations (1)