Browsing by Author "Fariha, Athkia"

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A Comprehensive Review on the Sustainable Treatment of Textile Wastewater
(Scopus, 22-11-19) Jahan, Nusrat; Tahmid, Mohammed; Shoronika, Afrina Zaman; Fariha, Athkia; Roy, Hridoy; Pervez, Md. Nahid; Cai, Yingjie; Naddeo, Vincenzo; Islam, Md. Shahinoor
Clothing, one of the basic needs, demands the growth of textile industries worldwide, resulting in higher consumption and pollution of water. Consequently, it requires extensive treatment of textile effluent for environmental protection as well as reuse purposes. Primary treatment, secondary treatment, and tertiary treatment are the three major phases of textile wastewater treatment. Secondary treatment under aerobic and anaerobic circumstances is carried out to decrease BOD, COD, phenol, residual oil, and color, whereas primary treatment is utilized to remove suspended particles, oil, grease, and gritty materials. However, biological treatment is not fully capable of treating water according to discharge/reuse standards. Hence, tertiary treatment is used to remove final contaminants from the wastewater. Adsorption is regarded as one of the most feasible processes for dye and metal removal in consideration of cost and variation in the adsorbent. Though membrane filtration is an efficient process, the cost of operation limits its application. It’s unfortunate that there isn’t a universally applicable treatment solution for textile effluents. Therefore, the only flexible strategy is to combine several therapy modalities. Treatment of complicated, high-strength textile wastewater depending on pollutant load will be more successful if physical, chemical, and biological approaches are used in tandem. Enforcement of stringent environmental regulation policies, increasing costs and demand for freshwater, and the rising costs and difficulties associated with wastewater disposal are accelerating efforts toward achieving ZLD. Additionally, research into methods for extracting useful materials from wastewater has blossomed in recent years. As such, the purpose of this analysis is to give a holistic overview of textile wastewater treatment systems, with a focus on zero liquid discharge (ZLD) and efficient resource recovery, both of which may hasten the transition to more sustainable water management.
Electrocoagulation-based wastewater treatment process and significance of anode materials for the overall improvement of the process: A critical review
(Scopus, 2024) Sadaf, Shoumik; Roy, Hridoy; Fariha, Athkia; Rahman, Tanzim Ur; Tasnim, Nishat; Jahan, Nusrat; Sokan-Adeaga, Adewale Allen; Safwat, Safwat M.; Islam, Md Shahinoor
The electrocoagulation (EC) technique has been thoroughly investigated over the last decade in several reviews. The selection and modification of anode materials play a crucial role in enhancing the efficiency and effectiveness of the EC process. This paper sheds light on an overview of the EC process, its principle, mechanism, and applications in wastewater treatment, mainly based on different anode materials and their applicability in various industries. It then discusses the importance of anode material selection and modification, emphasizing surface modification techniques such as conducting polymer and nanopolymer composite coating. These techniques aim to improve the anode's electrochemical properties and performance in wastewater treatment. Furthermore, this review conducts a comprehensive cost analysis of the EC process, considering equipment, energy consumption, maintenance, and chemical requirements along with different electrode materials. Cost-effective strategies for implementing EC-based wastewater treatment systems are discussed, highlighting the importance of considering long-term operational costs and environmental impacts. The review also provides future perspective recommendations for advancing the field of EC-based wastewater treatment. It suggests areas for further research, such as developing novel anode materials, optimizing surface modification techniques, and integrating EC with other treatment processes, such as wireless EC and nano-filtration, for improved efficiency.
Electrocoagulation-based wastewater treatment process and significance of anode materials for the overall improvement of the process: A critical review
(2024) Sadaf, Shoumik; Roy, Hridoy; Fariha, Athkia; Rahman, Tanzim Ur; Tasnim, Nishat; Jahan, Nusrat; Adeaga, Adewale Allen Sokan-; Safwat, Safwat M.; Islam, Md Shahinoor
The electrocoagulation (EC) technique has been thoroughly investigated over the last decade in several reviews. The selection and modification of anode materials play a crucial role in enhancing the efficiency and effectiveness of the EC process. This paper sheds light on an overview of the EC process, its principle, mechanism, and applications in wastewater treatment, mainly based on different anode materials and their applicability in various industries. It then discusses the importance of anode material selection and modification, emphasizing surface modification techniques such as conducting polymer and nanopolymer composite coating. These techniques aim to improve the anode's electrochemical properties and performance in wastewater treatment. Furthermore, this review conducts a comprehensive cost analysis of the EC process, considering equipment, energy consumption, maintenance, and chemical requirements along with different electrode materials. Cost-effective strategies for implementing EC-based wastewater treatment systems are discussed, highlighting the importance of considering long-term operational costs and environmental impacts. The review also provides future perspective recommendations for advancing the field of EC-based wastewater treatment. It suggests areas for further research, such as developing novel anode materials, optimizing surface modification techniques, and integrating EC with other treatment processes, such as wireless EC and nano-filtration, for improved efficiency.
Progress in Plasma Doping Semiconductor Photocatalysts for Efficient Pollutant Remediation and Hydrogen Generation
(Elsevier, 2023-09-01) Rahman, Tanzim Ur; Roy, Hridoy; Fariha, Athkia; Shoronika, Afrina Zaman; Al-Mamun, Md. Rashid; Islam, Syed Z.; Islam, Md. Shahinoor; Marwani, Hadi M.; Islam, Aminul; Alsukaibi, Abdulmohsen K.D.; Rahman, Mohammed M.; Awual, Md. Rabiul
In recent years, solar energy-driven photocatalysis materials have drawn significant attention to addressing the global energy and environmental crisis. However, many of the semiconductor photocatalysts are unable to absorb the visible light of the solar spectra due to their wide band gap. The incorporation of a foreign element such as a dopant in the lattice of these photocatalysts was shown to reduce their band gap and enhance visible light absorption. The doping of semiconductors can be performed using several techniques such as sol–gel, hydrothermal, solvothermal, and plasma-based doping. However, plasma-based doping has been considered a highly efficient approach due to the reduction of the band gap to a large extent, enhancement of visible light absorption, and remarkable photocatalytic activities under visible light illumination. The plasma-based doping approach offered many advantages such as high reactivity, process simplicity, scalability, energy efficiency, homogeneous doping, no chemical inventory, low pressure, and low-temperature operation, and flexibility of operation under gas and liquid phase media. Further advancement of plasma-based doping can be achieved through more theoretical studies allowing an in-depth understanding of the mechanisms and interactions of the species involved. This will facilitate the synthesis and application of doped photocatalysts in a cost-effective manner. This review surveyed recent advances in a wide range of semiconductor photocatalysts doped with various dopants using plasma treatment. Various plasma methods for doping semiconductor photocatalysts and their fundamental mechanisms were discussed. The performance characteristics of the plasma-doped photocatalysts were compared to other methods in terms of energy and environmental applications including degradation of environmental contaminants and solar fuel production such as hydrogen production from water splitting using visible light-driven solar energy. Finally, potential future research directions were recommended for the applications of the efficient photocatalysts developed by plasma treatment.
The Advancement in Membrane Bioreactor (MBR) Technology toward Sustainable Industrial Wastewater Management
(MDPI Publications, 2023-02-02) Rahman, Tanzim Ur; Roy, Hridoy; Islam, Md. Reazul; Tahmid, Mohammed; Fariha, Athkia; Mazumder, Antara; Tasnim, Nishat; Pervez, Md. Nahid; Cai, Yingjie; Naddeo, Vincenzo; Islam, Md. Shahinoor
The advancement in water treatment technology has revolutionized the progress of membrane bioreactor (MBR) technology in the modern era. The large space requirement, low efficiency, and high cost of the traditional activated sludge process have given the necessary space for the MBR system to come into action. The conventional activated sludge (CAS) process and tertiary filtration can be replaced by immersed and side-stream MBR. This article outlines the historical advancement of the MBR process in the treatment of industrial and municipal wastewaters. The structural features and design parameters of MBR, e.g., membrane surface properties, permeate flux, retention time, pH, alkalinity, temperature, cleaning frequency, etc., highly influence the efficiency of the MBR process. The submerged MBR can handle lower permeate flux (requires less power), whereas the side-stream MBR can handle higher permeate flux (requires more power). However, MBR has some operational issues with conventional water treatment technologies. The quality of sludge, equipment requirements, and fouling are major drawbacks of the MBR process. This review paper also deals with the approach to address these constraints. However, given the energy limitations, climatic changes, and resource depletion, conventional wastewater treatment systems face significant obstacles. When compared with CAS, MBR has better permeate quality, simpler operational management, and a reduced footprint requirement. Thus, for sustainable water treatment, MBR can be an efficient tool.