Article
Environmental Sciences
Isra Toptanci, Onur Ketenoglu, Mustafa Kiralan
Summary: Two perfluorinated compounds (PFCs) and 17 different primary aromatic amines (PAAs) were analyzed in migrants from 35 cookware samples marketed in Turkey using LC-MS/MS. Only PFOA was identified among PFCs in 6 samples, while aniline (ANL) was detected in all samples and 4,4'-methylenedianiline (4,4'-MDA) was detected in only 4 samples. The effects of simulant volume, temperature, and repeated use on the release of these migrants from non-stick cookware were investigated. The study found that increasing simulant volume resulted in decreased concentration of the migrants, and the lowest migration values were observed in consecutive usage cycles. PFCs and PAAs showed higher migration ability with increasing temperature.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Chemistry, Multidisciplinary
Sushant P. Sahu, Subarna Kole, Christopher G. Arges, Manas Ranjan Gartia
Summary: This study reports an electrochemical sensor with a selective perfluorinated anion exchange ionomer (PFAEI) coating for direct sensing of a type of PFAS called perfluorooctanoic acid (PFOA). The sensor operates without redox probes and has a low detection limit.
Article
Chemistry, Physical
Guillermo Guerrero-Vacas, Oscar Rodriguez-Alabanda, Francisco de Sales Martin-Fernandez, Maria Jesus Martin-Sanchez
Summary: This study compares subtractive manufacturing and additive manufacturing techniques in the production of stainless-steel parts with non-stick coatings. The research found that additive manufacturing has significant advantages in terms of surface roughness, adhesion, and wear resistance, making it suitable for fields such as medicine, food, chemical, and marine applications.
Article
Chemistry, Multidisciplinary
Shifeng Liu, Qingge Wang, Wei Liu, Yujin Tang, Jia Liu, Haifeng Zhang, Xuanyong Liu, Jingxian Liu, Junlin Yang, Lai-Chang Zhang, Yan Wang, Jing Xu, Weijie Lu, Liqiang Wang
Summary: A hybrid modified coating was prepared for bio-inert titanium implants, showing excellent comprehensive performance, optimized surface roughness for improved wear resistance, and effective antibacterial properties. The experiment results confirmed the effectiveness of these coatings in preventing infection and cytotoxicity.
Article
Nanoscience & Nanotechnology
Abdurashid Vokhidov
Summary: The main focus of ultra-thin tribology coatings is on the relationships between antifriction and antiadhesive nano-containing compositions, which significantly change surface energy to modify surfaces, including on the principle of Langmuir-Blodgett structures.
INTERNATIONAL JOURNAL OF NANOTECHNOLOGY
(2021)
Review
Chemistry, Multidisciplinary
Nadeem Baig, Billel Salhi, Muhammad Sajid, Isam H. Aljundi
Summary: Oily wastewater is a major cause of environmental pollution and poses a serious threat to the sustainability of ecosystems. Microfiltration/ultrafiltration membranes are considered an efficient solution for treating oily wastewater, although fouling caused by oil adsorption and cake layer formation reduces the lifespan of the membranes. This review critically discusses membrane synthesis methods and separation performance for emulsions, and highlights key challenges and potential solutions for synthesizing next-generation membranes.
Review
Environmental Sciences
Ihsanullah Ihsanullah, Muhammad Tariq Khan, Mukarram Zubair, Muhammad Bilal, Muhammad Sajid
Summary: This review critically evaluates the recent progress in applications of sludge-based biochar for the adsorption of pharmaceuticals from water, highlighting its excellent potential for the removal of numerous pharmaceuticals. The effects of synthesis techniques of biochar production from sludge on the physicochemical characteristics of produced biochar and their adsorption performance are discussed, with a focus on reusability.
Article
Environmental Sciences
Muhammad Sajid, Shehzada Muhammad Sajid Jillani, Nadeem Baig, Khalid Alhooshani
Summary: Layered double hydroxides (LDHs) are a class of two-dimensional inorganic materials with unique physicochemical properties, widely used in water treatment and membrane separation. LDH-based membranes exhibit excellent antifouling capability and enhanced water flux for the treatment of organics and inorganics in environmental water samples.
Review
Chemistry, Analytical
Muhammad Sajid, Justyna Plotka-Wasylka
Summary: Green analytical chemistry promotes environmentally friendly practices such as reducing the use of toxic chemicals, energy-efficient equipment, and minimizing waste generation. Various metrics have been developed to evaluate the greenness of analytical procedures, with tools like Analytical Eco-Scale and Green Analytical Procedure Index playing important roles in assessing the environmental impact of analytical processes. This paper explores the principles and applications of these greenness evaluation metrics, highlighting both their advantages and limitations in promoting sustainable analytical practices.
Article
Engineering, Chemical
Ihsanullah Ihsanullah, Muhammad Sajid, Saraf Khan, Muhammad Bilal
Summary: This review critically evaluates the recent developments in the applications of aerogel-based adsorbents for the confiscation of potentially toxic heavy metal ions from water and wastewater. The effects of key influencing parameters, interaction mechanisms, regeneration capabilities, and potential in real wastewater treatment are discussed. Various gaps and challenges are identified, and recommendations for future research are made.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Environmental
Muhammad Sajid, Mohammad Asif, Nadeem Baig, Muhamed Kabeer, Ihsanullah Ihsanullah, Abdul Wahab Mohammad
Summary: Carbon nanotubes-based adsorbents are widely used for the adsorption of inorganic and organic pollutants from water and wastewater due to their unique properties. Various approaches have been used to modify or functionalize carbon nanotubes for enhanced adsorption, and different mechanisms are involved depending on the adsorption conditions and functionalization. This review provides an overview of the properties, functionalization, and mechanisms of carbon nanotubes-based adsorption, as well as the critical parameters for water purification. It also discusses the challenges and potential solutions associated with carbon nanotubes-based adsorbents.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Review
Chemistry, Analytical
Muhammad Sajid
Summary: Since 2006, dispersive liquid-liquid microextraction (DLLME) has undergone several improvements in various aspects, including extraction device design, extractant dispersion strategies, solvent selection, and phase separation approaches. It has also been combined with other extraction techniques for wider applications. This review critically evaluates the advancements in simultaneous derivatization, automation, and instrumental coupling.
TRAC-TRENDS IN ANALYTICAL CHEMISTRY
(2022)
Review
Chemistry, Analytical
Muhammad Sajid
Summary: The collection, storage, and transportation of water samples from far-off places to the labs can be challenging and may cause errors in analysis. On-site sample preparation provides an opportunity to extract and preserve the analytes, but requires simple, portable, and energy-efficient equipment. Solvent-and sorbent-based micro-extraction approaches and modern variants of solid-phase extraction show great potential for on-site sample preparation.
TRENDS IN ENVIRONMENTAL ANALYTICAL CHEMISTRY
(2022)
Article
Environmental Sciences
Nadeem Baig, Abdulaziz Mohammed Alowaid, Ismail Abdulazeez, Billel Salhi, Muhammad Sajid, Irshad Kammakakam
Summary: A modified PVDF ultrafiltration membrane was developed by doping pyrrole and solidifying it in a ferric-containing coagulation bath to separate oil/water emulsions. The resulting membrane showed improved hydrophilicity, high separation efficiency, good antifouling behavior, and a high flux recovery ratio.
Review
Chemistry, Analytical
Nur Farahin Mohd Ali, Muhammad Sajid, Wan Ibrahim Thani Abd Halim, Ahmad Husaini Mohamed, Nur Nadhirah Mohamad Zain, Sazlinda Kamaruzaman, Nor Suhaila Mohamad Hanapi, Wan Nazihah Wan Ibrahim, Noorfatimah Yahaya
Summary: Bisphenols in the natural environment have gained global attention due to their potential hazards to human health and the aquatic ecosystem. However, their trace-level presence makes the direct determination in food and water matrices challenging. Therefore, sensitive, effective, rapid, and simple extraction and concentration methods are required.
MICROCHEMICAL JOURNAL
(2023)
Review
Engineering, Chemical
Muhammad Sajid, Ihsanullah Ihsanullah, Muhammad Tariq Khan, Nadeem Baig
Summary: Contamination of water resources with inorganic and organic pollutants, as well as microplastics (MPs), poses a significant challenge to aquatic, human, and wildlife sustainability. Nanomaterial-based adsorbents, such as metal-organic frameworks, bio-based nanomaterials, carbon-based nanomaterials, and layered double hydroxides, show promise in removing MPs from water due to their high surface area and affinity towards pollutants. However, research in this field is still in its early stages and several questions remain unanswered. Further studies are needed to fully explore the strengths, weaknesses, and future research dimensions of nanomaterial-based adsorbents for MP removal from water.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Chemistry, Analytical
Muhammad Sajid
Summary: The development of greener and more efficient materials for extracting environmental contaminants is a growing area of research. Chitosan, enriched with amino and hydroxyl groups, is a non-toxic biopolymer that can be used for extracting pollutants and functionalizing with other materials. This review provides an overview of the applications of chitosan-based sorbents in analytical extractions and water treatment.
TRENDS IN ENVIRONMENTAL ANALYTICAL CHEMISTRY
(2022)
Review
Chemistry, Analytical
Mohammed Altahir Suliman, Muhammad Sajid, Mazen K. Nazal, Md. Aminul Islam
Summary: The role of carbon-based sorbents in the extraction of heavy metal ions from environmental, biological, and food samples is discussed in this review. Carbon-based sorbents include carbon nanotubes and their composites, graphene-based materials or composites, and other carbon-based materials. The synthesis aspects that enhance extraction capabilities and selectivity for specific heavy metal ions are discussed, and an overview of sorbent-based extraction techniques using carbon-based materials is provided.
TRAC-TRENDS IN ANALYTICAL CHEMISTRY
(2023)
Review
Engineering, Chemical
I. Ihsanullah, Muhammad Bilal, Muhammad Sajid, Abdul Wahab Mohammad, Muataz A. Atieh, Noreddine Ghaffour
Summary: This review critically summarizes the successful applications of MXene materials in the separation of oily emulsions. The unique characteristics of MXene materials position them as ideal candidates for oil/water separation applications. The paper evaluates the separation mechanisms, regeneration performance, stability, and durability of MXene-based materials and identifies current challenges and research gaps. Future prospects for advancing MXene-based oil/water separation technology are also presented.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Review
Environmental Sciences
Muhammad Sajid
Summary: Nanomaterials have unique physical and chemical properties compared to bulk materials, leading to exciting applications in science and technology. This review summarizes the classification, synthesis methods, and properties of nanomaterials, including newly developed ones. It also provides a brief overview of the environmental health and safety considerations associated with nanomaterials.
CURRENT OPINION IN ENVIRONMENTAL SCIENCE & HEALTH
(2022)
