Article
Chemistry, Physical
Dana I. M. Al-Risheq, Shifa M. R. Shaikh, Mustafa S. Nasser, Fares Almomani, Ibnelwaleed A. Hussein, Mohammad K. Hassan
Summary: This study examines the influence of a hybrid coagulation/flocculation process on highly stable bentonite suspension. The results show that cationic and anionic polyacrylamide (PAM) exhibit different flocculation behaviors in the presence of a natural deep eutectic solvent (NADES). The molecular weight and charge density of PAM have a significant impact on the flocculation efficiency of bentonite suspension.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Engineering, Chemical
Keru Hou, Kaili Jin, Zhuizhui Fan, Peibo Du, Yating Ji, Jun Wang, Yaping Zhao, Chengjian Yao, Zaisheng Cai
Summary: This study demonstrates a simple and facile approach to fabricate special wettability fabric-based membranes for complex oil/water separation. These membranes exhibit excellent performance in emulsion separation as well as removal of multiple pollutants, offering new prospects for industrial oily wastewater treatment.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Engineering, Chemical
Subhadeep Chakraborty, Sonai Dutta, Rahul Chatterjee, Jagannath Chanda, Sagar Pal, Abhijit Bandyopadhyay
Summary: A decorated semi-synthetic flocculant derived from Xanthan gum has been synthesized and found to efficiently unsettle stable kaolin suspension at low concentration (0.25wt.%). The copolymer with the maximum extent of branching (70.5%) exhibited the fastest settling time and the lowest turbidity, especially at pH 7 and the isoelectric point.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2023)
Article
Chemistry, Physical
Reza Elhaei, Riyaz Kharrat, Mohammad Madani
Summary: This study investigates the characterization and rheological behavior of silica suspensions in aqueous/polymeric media, considering various factors such as silica nanoparticles size and concentration, polymer molecular weight and concentration, pH, valency, and concentration of electrolytes. The findings show that the bridging flocculation of dispersed silica nanoparticle-augmented polymer solution increases with nanoparticle concentration, diameter, charge of electrolyte, and electrolyte concentration, but decreases with an increase in pH and polymer concentration.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Materials Science, Paper & Wood
Zhen Li, Wenli Gong, Xuan Chen, Lin Liu, Ranju Meng, Yanhong Ding, Juming Yao
Summary: In this study, sustainable cationic cellulose bioflocculants with different amino group contents were successfully prepared and proven to be effective in treating high turbidity wastewater. The results demonstrated that the high surface positive charges and supramolecular structure played a crucial role in the flocculation efficiency of cellulose bioflocculants.
Article
Biochemistry & Molecular Biology
Chuang Liu, Xiaoyu Wang, Sicong Du, Peng Cheng, Wenyan Liang
Summary: Magnetic flocculant (Fe3O4@PP) was synthesized using plant polyphenol (PP) as a shaping ligand via in situ self-assembly. Fe3O4@PP showed excellent turbidity removal efficiency in a wide pH range and initial turbidity range. The formation process of magnetic flocs was influenced by magnetic force, electric charge, van der Waals force, and functional groups on the surface of PP.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Environmental Sciences
M. A. Al-Shaweesh, A. Awad, D. Al-Kabariti, M. S. Al-Hwaiti, O. A. Al-Kashman, A. F. Khafaga, M. E. Abd El-Hack, F. A. Adday
Summary: Solid wastes and wastewater produced by olive industries pose toxic pollution to the environment. This research introduces a treatment process using low-cost chemical coagulants as the main method, achieving a 99.5% removal rate of contaminants through filtration and addition of hydrogen peroxide.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2023)
Article
Environmental Sciences
Juan Li, Martha Dagnew, Madhumita B. Ray
Summary: This study investigates the effect of coagulation on microfibers from laundry processes and finds that the addition of polyaluminum chloride (PACl) can increase the removal efficiency. The study also observes surface changes of the microfibers during coagulation and identifies charge neutralization and adsorption-bridging as the dominant mechanisms.
ENVIRONMENTAL RESEARCH
(2022)
Article
Engineering, Environmental
Nur Syahirah Mohamed Hatta, Shiew Wei Lau, Masahiro Takeo, Han Bing Chua, Priyanka Baranwal, Nabisab Mujawar Mubarak, Mohammad Khalid
Summary: BF01314, a novel soluble chitosan-like bioflocculant derived from Citrobacter youngae GTC 01314, exhibited strong flocculation activities in kaolin suspension and activated sludge, with a broad operating window and significant dewaterability improvement. The flocculation mechanisms were found to be governed by electrostatic charge patching and bridging, making BF01314 a potential candidate for suspended solids removal in water and wastewater treatment.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Biotechnology & Applied Microbiology
Yong Cheng, Longjun Xu, Chenglun Liu
Summary: In this study, red mud was used as a raw material to extract aluminum and iron, and a highly efficient polyaluminium ferric chloride (PAFC) flocculant was prepared. The flocculation performance of the PAFC under different synthesis and flocculation conditions was investigated. The results showed that the PAFC prepared at specific conditions had the optimum effect and could be used for the treatment of aged landfill leachate.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2022)
Article
Chemistry, Physical
Qing Teng, Zhichao Yang, Bao Li, Zhixuan Xie, Shengyu Liu
Summary: This study investigates the aggregation process of kaolin particles using a combination of Fe(III) and xanthan gum (XG). The results show that the combination of XG and Fe(III) is effective in the flocculation of kaolin due to the self-assembly multilayers formed on the surface of kaolin. The study further elucidates the flocculation mechanism using density functional theory calculations and X-ray photoelectron spectroscopy analyses. The research provides new insights into the composite applications of inorganic coagulants and flocculants, expanding our knowledge of the aggregation process and enhancing particle settling in practical applications.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Environmental Sciences
Gustavo Lopes Muniz, Magno dos Santos Pereira, Alisson Carraro Borges
Summary: The optimization of coagulant dosage and pH for synthetic dairy wastewater was studied using full factorial design and full factorial design with center point. The results showed that the optimal conditions for removing turbidity and COD were at pH 5.0 with 50 mg L-1 of coagulant, achieving over 98% turbidity removal with PAM and above 72% COD removal, and over 95% turbidity removal with Tanfloc and above 65% COD removal. The addition of center points in the factorial design helped estimate experimental error with fewer runs and did not affect the estimates of the factorial effects.
Article
Chemistry, Multidisciplinary
Jonas Blockx, An Verfaillie, Olivier Deschaume, Carmen Bartic, Koenraad Muylaert, Wim Thielemans
Summary: A bio-based flocculant using cellulose nanocrystals grafted with glycine betaine was developed for flocculation of kaolin and microalgae. The degree of substitution of grafted glycine betaine on nanocrystals ranged from 0.078 to 0.152, showing comparable efficacy to commercial flocculants.
NANOSCALE ADVANCES
(2021)
Article
Engineering, Chemical
Mohsen Behnezhad, Farzad Hashemzadeh, Amir Hesam Hassani
Summary: This study investigated the effectiveness of ozonation in reducing leachate pollution of a disposal center, reporting that ozonation after coagulation-flocculation had better performance. Ferric chloride showed better efficiency under acidic conditions, with optimal efficiency at pH 11.
DESALINATION AND WATER TREATMENT
(2021)
Article
Water Resources
Manoj Kumar Karnena, Madhavi Konni, Bhavya Kavitha Dwarapureddi, Vara Saritha
Summary: The present study aimed to treat aquaculture wastewater using two natural coagulants, chitin and seeds of Moringa oleifera. The results showed that the natural coagulants exhibited a 30-50% reduction in various physicochemical parameters. The most promising result was obtained with the blended coagulant (di-blend) which showed a 70-81% removal of total nitrogen and total phosphorus, as well as a 95% reduction of chloride.
APPLIED WATER SCIENCE
(2022)
Article
Engineering, Chemical
Siee-Kung Khiew, Tjoon-Tow Teng, Yee-Shian Wong, Soon-An Ong, Norli Ismail, A. F. M. Alkarkhi
DESALINATION AND WATER TREATMENT
(2016)
Article
Chemistry, Multidisciplinary
Ling Wei Low, Tjoon Tow Teng, Abbas F. M. Alkarkhi, Norhashimah Morad, Baharin Azahari
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2015)
Article
Engineering, Chemical
Kah Aik Tan, Norhashimah Morad, Tjoon Tow Teng, Ismail Norli
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2015)
Article
Chemistry, Multidisciplinary
Afizah Ayob, Salina Alias, Farrah Aini Dahlan, Ragunathan Santiagoo, Ahmad Zuhairi Abdullah, Tjoon Tow Teng
MACEDONIAN JOURNAL OF CHEMISTRY AND CHEMICAL ENGINEERING
(2015)
Article
Medicine, Legal
Wei Zeng Low, Bee Ee Khoo, Zalina Binti Abdul Aziz, Ling Wei Low, Tjoon Tow Teng, Ahmad Fahmi Lim Bin Abdullah
Article
Chemistry, Multidisciplinary
Shabnam Khosravihaftkhany, Norhashimah Morad, Ahmad Zuhairi Abdullah, Tjoon Tow Teng, Norli Ismail
Article
Chemistry, Multidisciplinary
Amir Talebi, Tjoon Tow Teng, Abbas F. M. Alkarkhi, Norli Ismail
Article
Environmental Sciences
Claire Xin-Hui Su, Tjoon-Tow Teng, Yee-Shian Wong, Norhashimah Morad, Mohd Rafatullah
Article
Biotechnology & Applied Microbiology
Yen-Yie Lau, Yee-Shian Wong, Soon-An Ong, Nabilah Aminah Lutpi, Sung-Ting Sam, Tjoon-Tow Teng, Kim-Mun Eng
Summary: This study demonstrates the effective treatment and degradation pathway of environmental emerging pollutants through a combined treatment method of thermolysis and coagulation-flocculation. The research provides new insights and valuable guidance for establishing efficient multiple-step wastewater treatments.
BIOPROCESS AND BIOSYSTEMS ENGINEERING
(2023)
Review
Engineering, Environmental
Mohammad Shahadat, Tjoon Tow Teng, Mohd. Rafatullah, Z. A. Shaikh, T. R. Sreekrishnan, S. Wazed Ali
CHEMICAL ENGINEERING JOURNAL
(2017)
Review
Engineering, Environmental
Claire Xin-Hui Su, Ling Wei Low, Tjoon Tow Teng, Yee Shian Wong
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2016)
Proceedings Paper
Energy & Fuels
Yee-Shian Wong, Tjoon-Tow Teng, Norhashimah Morad, Mohd Rafatullah, Yee-Shian Wong, Soon-An Ong
ENERGY, ENVIRONMENTAL & SUSTAINABLE ECOSYSTEM DEVELOPMENT
(2016)
Proceedings Paper
Energy & Fuels
Claire Xin-Hui Su, Tjoon-Tow Teng, Norhashimah Morad, Mohd Rafatullah, Yee-Shian Wong
ENERGY, ENVIRONMENTAL & SUSTAINABLE ECOSYSTEM DEVELOPMENT
(2016)
Proceedings Paper
Energy & Fuels
Yen-Yie Lau, Tjoon-Tow Teng, Norhashimah Morad, Mohd Rafatullah, Yee-Shian Wong, Soon-An Ong
ENERGY, ENVIRONMENTAL & SUSTAINABLE ECOSYSTEM DEVELOPMENT
(2016)
Article
Chemistry, Multidisciplinary
Yen-Yie Lau, Yee-Shian Wong, Tjoon-Tow Teng, Norhashimah Morad, Mohd Rafatullah, Soon-An Ong
Article
Engineering, Chemical
Arvin Sohrabi, Mousa Meratizaman, Shuli Liu
Summary: This paper simulates and discusses possible solutions to improve the economic and technical performances of a battery-less renewable energy-powered BWRO system under real climate conditions. The study finds that the photovoltaic-based system performs better in terms of specific energy consumption and unused energy ratio.
Article
Engineering, Chemical
Chunlan Pan, Xiaoyin Hu, Vishal Goyal, Theyab R. Alsenani, Salem Alkhalaf, Tamim Alkhalifah, Fahad Alturise, Hamad Almujibah, H. Elhosiny Ali
Summary: This paper introduces a novel waste heat recovery method using the hot flue gas from a ship's engine to produce liquefied hydrogen while meeting the ship's air-conditioning requirement. A comprehensive feasibility assessment is conducted and an artificial neural network with a multiobjective grey wolf optimization method is used for optimization. The findings indicate the highest mean sensitivity index of the flash temperature and the best optimization scenario for exergy efficiency, CO2 emission reduction, and liquefied hydrogen cost.
Article
Engineering, Chemical
Daniele Chinello, Jan Post, Louis C. P. M. de Smet
Summary: In this study, PVDF-based anion-exchange membranes were designed to selectively separate nitrate from chloride. Experimental data showed that increasing the concentration of PVDF enhanced nitrate transport but also increased the membrane electrical resistance. The selectivity of nitrate was found to be independent of the membrane thickness and mainly driven by the increased affinity between the anion and the membrane.
Article
Engineering, Chemical
Umar Noor, Muhammad Fayyaz Farid, Ammara Sharif, Amna Saleem, Zubair Nabi, Muhammad Furqan Mughal, Kiran Abbas, Toheed Ahmed
Summary: Global water scarcity is increasing, and water desalination is an important solution. Multifunctional advanced materials, such as membrane materials and solar-driven desalination, play a crucial role in water desalination. Additionally, these materials can be used for water purification, wastewater treatment, and pollutant elimination.
Article
Engineering, Chemical
Emrah Gumus
Summary: With growing global concerns about climate change and environmental impacts, the use of nuclear energy in naval vessels offers a cleaner and more efficient solution to reduce emissions and address water and energy supply challenges. This study explores a novel system that combines a nuclear-driven supercritical carbon dioxide power cycle with reverse osmosis cogeneration to meet the water and electricity demands in maritime operations, enhancing the sustainability, efficiency, and self-sufficiency of naval vessels. The results indicate that the system has the potential to be a viable and effective solution for naval operations.
Article
Engineering, Chemical
Dao Thi Thanh Huyen, Saikat Sinha Ray, Young -Nam Kwon
Summary: This study focuses on the modification of a commercially available polyamide thin-film composite membrane with a zwitterionic material to enhance its fouling resistance. The modified membrane shows improved salt rejection and reduced permeability compared to the pristine membrane. Fouling tests demonstrate that the modified membrane has a lower fouling ratio and higher recovery ratio. The enhanced antifouling characteristics are attributed to the improved hydrophilicity resulting from the zwitterionic brushes and the salting-in effect.
Article
Engineering, Chemical
Niklas Koeller, Lukas Mankertz, Selina Finger, Christian J. Linnartz, Matthias Wessling
Summary: This study presents a methodology to scale up Flow-electrode Capacitive Deionization (FCDI) technology from lab-scale to pilot-scale systems. By increasing membrane area and using a stacking approach, the FCDI modules were successfully scaled up and achieved a salt transfer rate comparable to lab-scale systems. This provides a foundation for future assessments of energy demand and economics.
Article
Engineering, Chemical
Mona Gulied, Sifani Zavahir, Tasneem Elmakki, Hyunwoong Park, Guillermo Hijos Gago, Ho Kyong Shon, Dong Suk Han
Summary: This study introduces a novel hybrid system that combines direct contact membrane distillation (DCMD) and electrically switched ion exchange (ESIX) to facilitate seawater reverse osmosis (SWRO) brine enrichment and selective lithium recovery.
Article
Engineering, Chemical
Zhiqiang Zhang, Ruifeng Deng, Jiao Zhang, Lu She, Guangfeng Wei, Renyong Jia, Pengyu Xiang, Siqing Xia
Summary: A transmembrane electro-chemisorption system with authigenic acid and base was developed for enhancing ammonia recovery from strong ammonia wastewater. The system efficiently transformed ammonium into free ammonia, which was then adsorbed and recovered through transmembrane chemisorption. This system yielded pure (NH4)2SO4 product and produced valuable byproducts of pure hydrogen and oxygen. Higher applied voltage resulted in better ammonia recovery.
Article
Engineering, Chemical
Alena Popova, Sandrine Boivin, Takuji Shintani, Takahiro Fujioka
Summary: This study aimed to produce a high-integrity RO membrane by forming a polyamide skin layer on a TE support layer, in order to enhance the integrity of the membrane and improve the microbiological safety of potable water reuse.
Article
Engineering, Chemical
Sanjana Yagnambhatt, Saber Khanmohammadi, Jonathan Maisonneuve
Summary: This study investigates the concept of using heat to enhance reverse osmosis (RO) desalination. The effect of temperature on water permeate flux, specific energy, permeate quality, and applied operating pressures is evaluated using an analytical model. The results suggest that under specific conditions, the tradeoff between savings in mechanical pump work and thermal energy input in thermally-enhanced RO can be favorable, leading to overall energy savings.
Article
Engineering, Chemical
Jiangju Si, Chenrui Xue, Shun Li, Linchao Yang, Weiwei Li, Jie Yang, Jihong Lan, Ningbo Sun
Summary: To meet the huge demand for lithium resources, there is an urgent need to develop a new efficient technology for lithium recovery from salt-lake brines. In this study, a selective membrane capacitive deionization system is reported, which achieves high lithium recovery capacity and rate through the use of materials with efficient intercalated pseudo-capacitance and a high specific area porous carbon. The use of a modified thin-coated membrane allows for selective Li+ recovery, and adjusting the concentrations of Li+ and Mg2+ in the feed solution enables higher Li+/Mg2+ selectivity.
Article
Engineering, Chemical
Mohamed R. Salem, R. Y. Sakr, Ghazy M. R. Assassa, Omar A. Aly
Summary: This research proposes a new method of using wasted thermal energies as an additional heating source for solar still distillation units (SSDUs) to increase productivity and reduce pollution and global warming. By testing two SSDUs, the study shows that heating airflow can raise temperatures, enhance freshwater production, and improve system thermal efficiency.
Article
Engineering, Chemical
Qimeng Sun, Miao Sun, Linyan Yang, Yuan Gao, Xinghai Zhou, Lihua Lyu, Chunyan Wei
Summary: This study presents an innovative design and fabrication of a fabric-based conical roll (FCR) evaporator, which enables low-temperature evaporation and achieves high evaporation efficiency with excellent thermal management ability. The evaporator has demonstrated advanced light-harvesting capability and can produce freshwater that meets drinking water standards, showing great potential for applications in desalination and sewage treatment.
Article
Engineering, Chemical
Yidong Zhang, Wangfang Deng, Meiyan Wu, Chao Liu, Guang Yu, Qiu Cui, Pedram Fatehi, Chunlin Xu, Bin Li
Summary: In this study, a novel polydopamine-functionalized lignin-containing pulp foam evaporator with high-efficiency desalination and multi-contaminant adsorption capabilities was designed. The foam evaporator showed excellent light absorption, water absorption, thermal conductivity, and chelation abilities, allowing for solar evaporation and contaminant adsorption synergistically. It also exhibited potential applications in metal ion concentration and contaminated seawater treatments, and demonstrated superior biodegradability compared to poly-styrene foam. This foam material holds promise for developing multifunctional photo-thermal systems for solar-driven water purification.
