Peshawar, Pakistan (Local)
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Sajjad Haider's focus is on local news in Pakistan, particularly Khyber Pakhtunkhwa and Peshawar. His coverage predominantly includes breaking news and evolving stories related to government & politics and crime, especially focusing on terrorism, explosions, police investigations in the region.
If you are reaching out to Sajjad Haider with a pitch or as a source, consider providing insights into local political developments or security issues within Khyber Pakhtunkhwa and Peshawar. Expert commentary from individuals directly involved in relevant incidents or having expertise in regional politics could be of interest to him.
Given his coverage attributes heavily favoring breaking news and evolving stories, pitches should offer timely updates on ongoing events or emerging situations related to government policies, crime trends, terrorism activities along with their impact on the local community.
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By: Qaiser Iqbal, Mohammad Bashaar, Shanaz Raza, Syireen Alwi, Fahad Saleem, Abdul Wahid, Sajjad Haider
Examining and establishing the psychometric properties of the Urdu version of the Brief Illness Perception Questionnaire in patients with T2DM.
By: Shaddad S. Alhamedi, Waheed Al-Masry, Sajjad Haider, Asif Mahmood, Ahmed S Al-Fatesh
This study addresses the critical issue of environmental pollution from plastic waste by investigating an effective chemical recycling method for polyethylene terephthalate (PET) via neutral catalytic hydrolysis. We utilized a recoverable and regenerable composite catalyst based on cracking zeolite and γ-Al2O3, which possesses both Brønsted and Lewis acidic sites that facilitate the depolymerization of PET into its constituent monomers, terephthalic acid (TPA) and ethylene glycol (EG). This investigation reveals that the catalytic performance is strongly dependent on the total acid site concentration and the specific nature of these sites. A key finding is that a balanced acidic profile with a high proportion of Brønsted acid sites is crucial for enhancing PET hydrolysis attributed to a significant decrease in the activation energy of the reaction. The experiments were conducted in a stirred stainless-steel autoclave reactor, where key parameters such as temperature (210–230 °C), the PET-to-water ratio (1:2 to 1:5), and reaction time were systematically varied. Under optimal conditions of 210 °C and a 6 h reaction time, the process achieved near-complete PET depolymerization (99.5%) and a high TPA yield (90.24%). The catalyst demonstrated remarkable recyclability, maintained its activity over multiple cycles and was easily regenerated. Furthermore, the recovered TPA was of high quality, with a purity of 98.74% as confirmed by HPLC, and exhibited a melt crystallization temperature 14 °C lower than that of the commercial standard. These results not only demonstrate the efficiency and sustainability of neutral catalytic hydrolysis using zeolite/alumina composites but also provide valuable insights for designing advanced catalysts with tunable acidic properties. By demonstrating the importance of tuning acidic properties, specifically the balance between Brønsted and Lewis sites, this work lays a foundation for developing more effective catalysts that can advance circular economy goals for PET recycling.
Victim families to receive Rs2.2m each, injured passengers will get Rs1m each
