Asma Nasrullah
Universiti Teknologi Petronas
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Featured researches published by Asma Nasrullah.
The Scientific World Journal | 2015
Asma Nasrullah; Hizbullah Khan; Amir Sada Khan; Zakaria Man; Nawshad Muhammad; Muhammad Irfan Khan; Naser M. Abd El-Salam
The ash of C. polygonoides (locally called balanza) was collected from Lakki Marwat, Khyber Pakhtunkhwa, Pakistan, and was utilized as biosorbent for methylene blue (MB) removal from aqueous solution. The ash was used as biosorbent without any physical or chemical treatment. The biosorbent was characterized by using various techniques such as Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), and scanning electron microscopy (SEM). The particle size and surface area were measured using particle size analyzer and Brunauer-Emmett-Teller equation (BET), respectively. The SEM and BET results expressed that the adsorbent has porous nature. Effects of various conditions such as initial concentration of methylene blue (MB), initial pH, contact time, dosage of biosorbent, and stirring rate were also investigated for the adsorption process. The rate of the adsorption of MB on biomass sample was fast, and equilibrium has been achieved within 1 hour. The kinetics of MB adsorption on biosorbent was studied by pseudo-first- and pseudo-second-order kinetic models and the pseudo-second-order has better mathematical fit with correlation coefficient value (R 2) of 0.999. The study revealed that C. polygonoides ash proved to be an effective, alternative, inexpensive, and environmentally benign biosorbent for MB removal from aqueous solution.
International Journal of Biological Macromolecules | 2018
Asma Nasrullah; A.H. Bhat; A. Naeem; Mohamed Hasnain Isa; Mohammed Danish
High surface area mesoporous activated carbon-alginate (AC-alginate) beads were successfully synthesized by entrapping activated carbon powder derived from Mangosteen fruit peel into calcium-alginate beads for methylene blue (MB) removal from aqueous solution. The structure and surface characteristics of AC-alginate beads were analyzed using Fourier transform infra-red (FTIR) spectroscopy, scanning electron microscopy (SEM) and surface area analysis (SBET), while thermal properties were tested using thermogravimetric analysis (TGA). The effect of AC-alginate dose, pH of solution, contact time, initial concentration of MB solution and temperature on MB removal was elucidated. The results showed that the maximum adsorption capacity of 230mg/g was achieved for 100mg/L of MB solution at pH 9.5 and temperature 25°C. Furthermore, the adsorption of MB on AC-alginate beads followed well pseudo-second order equation and equilibrium adsorption data were better fitted by the Freundlich isotherm model. The findings reveal the feasibility of AC-alginate beads composite to be used as a potential and low cost adsorbent for removal of cationic dyes.
Carbohydrate Polymers | 2018
Amir Sada Khan; Zakaria Man; Mohamad Azmi Bustam; Asma Nasrullah; Zahoor Ullah; Ariyanti Sarwono; Faiz Ullah Shah; Nawshad Muhammad
In the present research work, dicationic ionic liquids, containing 1,4-bis(3-methylimidazolium-1-yl) butane ([C4(Mim)2]) cation with counter anions [(2HSO4)(H2SO4)0], [(2HSO4)(H2SO4)2] and [(2HSO4)(H2SO4)4] were synthesised. ILs structures were confirmed using 1H NMR spectroscopy. Thermal stability, Hammett acidity, density and viscosity of ILs were determined. Various types of lignocellulosic biomass such as rubber wood, palm oil frond, bamboo and rice husk were converted into levulinic acid (LA). Among the synthesized ionic liquids, [C4(Mim)2][(2HSO4)(H2SO4)4] showed higher % yield of LA up to 47.52 from bamboo biomass at 110°C for 60min, which is the better yield at low temperature and short time compared to previous reports. Surface morphology, surface functional groups and thermal stability of bamboo before and after conversion into LA were studied using SEM, FTIR and TGA analysis, respectively. This one-pot production of LA from agro-waste will open new opportunity for the conversion of sustainable biomass resources into valuable chemicals.
Lignocellulosic Fibre and Biomass-Based Composite Materials#R##N#Processing, Properties and Applications | 2017
Asma Nasrullah; A.H. Bhat; A. Sada Khan; H. Ajab
Lignocellulose has three main constituents, cellulose, hemicellulose, and lignin. Lignin is an abundant bioderived, aromatic, renewable feedstock and a by-product of pulp and paper industry. Presently, only 1% of lignin is utilized for the production of valuable chemicals and other biofuels, while most part of lignin is burnt for heat and power generation. Lignin is such a reliable and sustainable feedstock, which has much more complex structure containing various types of functional groups that can play a major role in modification of lignin. This chapter highlights historical background, chemical composition, and its structure that can prove to be an excellent feedstock, offering the development of high level of technologies for the production of value-added chemicals, biofuels, and composites in future.
4TH INTERNATIONAL CONFERENCE ON FUNDAMENTAL AND APPLIED SCIENCES (ICFAS2016) | 2016
Asma Nasrullah; A.H. Bhat; Mohamed Hasnain Isa
With the recent advancements in science and technology, environmental pollution is a challenging problem due to increased activities in domestic, industrial, and agricultural sector. These activities have led to the release of various types of micropollutants such as heavy metal ions, organic and inorganic ions (detergents, and dye) etc into ground water which badly affects the ecosystem. Among various types of pollutants, heavy metals are the most reported in the recent decade. Water pollution is the most challenging problem, and needs to be controlled for better and healthy ecosystem which requires a healthy, eco-friendly and cheaper technology. In this context. lignin is abundantly available, cheaper and environmentally friendly. For efficient removal of heavy metals, lignin can be modified chemically or thermally to increased its biosorption capacity. In this review merits of adsorption and demerits of other separation technologies are compared. This paper presents the recent state of research on the ...
ChemBioEng Reviews | 2015
Nawshad Muhammad; Zakaria Man; M.I. Abdul Mutalib; Mohamad Azmi Bustam; Cecilia Devi Wilfred; Amir Sada Khan; Zahoor Ullah; Girma Gonfa; Asma Nasrullah
Journal of Molecular Liquids | 2017
Amir Sada Khan; Zakaria Man; Annie Arvina; Mohammad Azmi Bustam; Asma Nasrullah; Zahoor Ullah; Ariyanti Sarwono; Nawshad Muhammad
Journal of Cleaner Production | 2018
Amir Sada Khan; Zakaria Man; Mohamad Azmi Bustam; Chong Fai Kait; Asma Nasrullah; Zahoor Ullah; Ariyanti Sarwono; Pervaiz Ahamd; Nawshad Muhammad
Journal of Molecular Liquids | 2016
Amir Sada Khan; Zakaria Man; Mohammad Azmi Bustam; Chong Fai Kait; Zahoor Ullah; Asma Nasrullah; Muhammad Irfan Khan; Girma Gonfa; Pervaiz Ahmad; Nawshad Muhammad
Waste and Biomass Valorization | 2016
Amir Sada Khan; Zakaria Man; Mohammad Azmi Bustam; Chong Fai Kait; Muhammad Irfan Khan; Nawshad Muhammad; Asma Nasrullah; Zahoor Ullah; Pervaiz Ahmad