Article
Environmental Sciences
Meng Lu, Yao Wang, Junxia Yu, Dezeng Li, Qingbiao Zhao, Ruan Chi
Summary: Phosphogypsum (PG) was used as an adsorbent for dyes in wastewater, and surfactant-modified phosphogypsum (ODBAC@PG) with high adsorption capability for anionic dyes was prepared. The adsorption process followed the pseudo-second-order kinetic model and Langmuir adsorption isotherm. MeB and IC showed antagonistic effects on each other in the binary adsorption system, and ODBAC@PG exhibited high reusability. The adsorption mechanism involved electrostatic interaction, hydrogen bond, and hydrophobic interaction.
ENVIRONMENTAL RESEARCH
(2023)
Article
Engineering, Chemical
Mingyan Fu, Bas Heijman, Jan Peter van der Hoek
Summary: Adsorption by granular zeolites and regenerating exhausted zeolites by gaseous ozone is an effective treatment technology for removing organic micropollutants from wastewater. In this study, the zeolite fixed-bed column achieved removal efficiencies between 70% and 100% for eight organic micropollutants, with less favorable removal for two other compounds. Increasing the pre-backwash duration reduced ozone consumption during regeneration.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Environmental Sciences
L. Piai, S. Mei, K. van Gijn, A. Langenhoff
Summary: Improving the removal of micropollutants from wastewater effluent is crucial to protect surface water quality. This study investigates the factors that affect the performance of activated carbon filters in wastewater treatment compared to drinking water production. The results show that both the concentration and composition of organic matter play a role in the affinity of micropollutants for activated carbon and the adsorption rate. This knowledge can help develop strategies to overcome challenges in the application of activated carbon filters in water treatment.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2023)
Article
Environmental Sciences
Shiquan Yan, Xinting Lai, Lingling Fan, Tianhao Wang, Yuyuan Yao, Wentao Wang
Summary: In this study, a system integrating adsorption and in situ AOPs was successfully established using Fe-NC/CAG material for the efficient treatment of wastewater containing organic pollutants.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Engineering, Environmental
Zhanyao Li, Guifang Chen, Huiru Ma, Fuyu Huang, Hao Xu, Liqiang Zhang, Xueliang Yuan, Xinyan Zhang, Shouyan Chen, Ping Zhou
Summary: Powdered activated coke has potential in wastewater treatment due to its good adsorption performance and low cost. However, its regeneration is difficult due to saturation, limiting its wider application. Hydrothermal regeneration in water treatment is a suitable solution as it does not require pre-drying and has minimal mass loss.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Engineering, Environmental
Heyun Yang, Xing Zheng, Dou Zhang, Gang Tang, Xiaoliang Li, Hua Wu, Wei Yan, Hegang Zhi
Summary: This study investigated the adsorption behavior and mechanism of seven typical adsorbents in removing phosphorus and dissolved organic matter from simulated wastewater and secondary effluent. Three adsorbents were selected for subsequent wastewater treatment due to their excellent adsorption and regeneration performance, with PANI/TiO2 exhibiting the most outstanding performance.
JOURNAL OF WATER PROCESS ENGINEERING
(2021)
Article
Chemistry, Physical
Bowen Hu, Ming Yang, He Huang, Zilin Song, Peng Tao, Yurui Wu, Kewen Tang, Xiaobo Chen, ChangAn Yang
Summary: This paper presents a novel series of TCPEIs adsorbents for efficient and selective recovery of Au(III) ions from aqueous solutions. Among them, TCPEI6 exhibits significantly high adsorption capacity and rate, with an adsorption efficiency of 95.6% within 10 seconds. The excellent adsorption performance is mainly attributed to electrostatic interaction, complexation, and mechanical stability of TCPEIs. TCPEIs can be regenerated within one minute without apparent performance degradation, showing great potential in precious metal ion recovery.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Review
Environmental Sciences
Shubham Sutar, Prasanna Patil, Jyoti Jadhav
Summary: This research summarizes the potential of biochar technology in adsorption and degradation of organic pollutants. Biochar has various advantages such as diverse raw materials, low cost, and reusability. The study discusses the adsorption variables, regeneration techniques, engineering applications, limitations, and future development prospects of biochar.
ENVIRONMENTAL RESEARCH
(2022)
Article
Chemistry, Analytical
Xue Xia, Faqin Dong, Xiaoqin Nie, Ning Pan, Chang Liu, Congcong Ding, Junling Wang, Wencai Cheng, Huichao He, Shiyong Sun, Yujing Zhang
Summary: A modified amino groups modified polyacrylonitrile fibers (PAN-A) was prepared and used to extract uranium from organic-containing low-level radioactive wastewater. The PAN-A showed high adsorption capacity and excellent recyclability, and performed efficiently in the organic containing waste water, while the polyvinylalcohol (PVA) exhibited a suppressive effect mainly due to its sticky nature.
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
(2022)
Review
Engineering, Environmental
Rangabhashiyam Selvasembian, Willis Gwenzi, Nhamo Chaukura, Siyanda Mthembu
Summary: The pollution of aquatic systems with harmful substances is a global challenge, and adsorption technique is considered as an effective means to address this issue. Polyurethane foam as an adsorbent has significant application potential, but further research is needed on its regeneration, recycling, and disposal aspects.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Review
Chemistry, Physical
Xiaoge Liu, Yuying Shan, Songtao Zhang, Qingquan Kong, Huan Pang
Summary: Water pollution is a serious issue due to its carcinogenic effects on humans and aquatic organisms. Metal organic framework (MOF), known for its adjustable pore structure, is widely used in water-stable MOFs for wastewater treatment applications. This review summarizes the application of MOF membranes in membrane filtration, pervaporation, and distillation, as well as the adsorption mechanisms of heavy metals, dyes, and antibacterials in wastewater. The challenges and future research directions for sustainable wastewater treatment using pristine MOFs are discussed in detail.
GREEN ENERGY & ENVIRONMENT
(2023)
Review
Environmental Sciences
Aruna Yadav, Nisha Bagotia, Ashok K. Sharma, Surender Kumar
Summary: This review discusses the use of biomass-based composites for contaminant removal from wastewater, highlighting their significant enhancement of adsorption capacity and the study of composite regeneration to tackle solid waste generation issue.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Engineering, Environmental
Zhen Wang, Chong-Miao Zhang, Chen-Xin Li, Yong-Fu Li, Xiao Mou, Rui You
Summary: Efficient enrichment is crucial for the quantitative detection of pathogenic viruses in municipal wastewater. This study investigated how dissolved organic matter (DOM) affects the adsorption-elution method using positively and negatively charged membranes to recover bacteriophage MS2 in raw sewage and secondary effluent. The results showed that the total recovery rate of the virus was higher with a negatively charged membrane compared to a positively charged membrane. Furthermore, the elution step was found to be the limiting step in the recovery process. Analysis revealed that tryptophan was dominant in raw sewage, while humic acid (HA) was dominant in secondary effluent. The presence of tryptophan increased the roughness of the fouled membrane surface, while HA made it difficult to elute the bacteriophage MS2 due to covalent and hydrogen bonds. These findings provide evidence and scientific support for standardizing enrichment methods in water samples.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Review
Green & Sustainable Science & Technology
Hanxi Wang, Jianling Xu, Xuejun Liu, Lianxi Sheng
Summary: This study analyzed the abundance of plant straw resources and the performance of activated carbon; the conclusions indicated that using multiple activators can improve the quality of straw activated carbon and significantly affect the removal efficiency of heavy metal pollution; these research findings are expected to optimize the preparation conditions of activated carbon and expand its application range.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Engineering, Chemical
Wan Ting Tee, Jia En Yong, Jasmine Chua, Nicholas Yung Li Loh, Billie Yan Zhang Hiew, Suyin Gan, Lai Yee Lee
Summary: This research focused on the development of a phosphorus-doped 3D graphene oxide adsorbent with bentonite and carboxymethyl cellulose crosslinking (PG/BCC) for the removal of imipramine in wastewater. The effects of various factors on imipramine adsorption were examined and optimized using batch experiments and central composite design. The results showed that PG/BCC is a highly feasible and sustainable graphene-based adsorbent for the separation of imipramine from pharmaceutical wastewater.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Engineering, Environmental
Sayed Mukit Hossain, Leonard Tijing, Norihiro Suzuki, Akira Fujishima, Jong-Ho Kim, Ho Kyong Shon
Summary: The study explored the feasibility of preparing TiO2/g-CN heterojunction from Ti-incorporated dried dye wastewater sludge. It found that while a one-step calcination route did not successfully create the desired composites, a two-step calcination route was necessary. The best atmospheric NO removal performance was observed when the precursor mixture contained 70% melamine.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Engineering, Chemical
Hadi Ahmadi, Mohammad Zakertabrizi, Ehsan Hosseini, Withita Cha-Umpong, Mojtaba Abdollahzadeh, Asghar Habibnejad Korayem, Vicki Chen, Ho Kyong Shon, Mohsen Asadnia, Amir Razmjou
Summary: This study introduces an approach to enhance the Li+ selectivity of 2D membranes by inducing asymmetry in the morphology and chemistry of their nanochannels. This approach allows for manipulation of cation hydration shells through a sudden change in nanochannel size and the addition of nucleophilic traps. The design results in a new ion transport mechanism called Energy Surge Baffle (ESB) that significantly enriches Li+ selectivity.
Article
Engineering, Chemical
Sayed Mukit Hossain, Hanwei Yu, Youngwoo Choo, Gayathri Naidu, Dong Suk Han, Ho Kyong Shon
Summary: This study improves the selectivity of lithium ions by modifying the electrode surfaces using the metal-organic framework ZiF-8. The in-situ growth of ZiF-8 on the surface of activated carbon electrodes increases the selectivity of lithium ions compared to bare electrodes.
Review
Environmental Sciences
Anwar Ul Haq Khan, Ravi Naidu, Raja Dharmarajan, Cheng Fang, Hokyong Shon, Zhaomin Dong, Yanju Liu
Summary: This review focuses on the occurrence and interactions of engineered nanoparticles (ENPs) and brominated flame retardants (BFRs) in water systems, as well as the formation of complex compounds in the environment. It summarizes the release of ENPs and BFRs, their key interaction mechanisms, and their influence on the behavior and toxic effects of PBDEs. The study highlights the distinct behavior of mixed compounds (ENPs-BFRs) and emphasizes the importance of understanding the interactions in comprehensive risk assessments.
JOURNAL OF ENVIRONMENTAL SCIENCES
(2023)
Article
Engineering, Chemical
Mohammad Mahbub Kabir, Mst. Mahmoda Akter, Zhenguo Huang, Leonard Tijing, Ho Kyong Shon
Summary: This study comprehensively evaluates the role of water industries in hydrogen production from a circular economy perspective, providing significant insights for future hydrogen energy development.
Article
Chemistry, Multidisciplinary
Tasneem Elmakki, Sifani Zavahir, Umme Hafsa, Leena Al-Sulaiti, Zubair Ahmad, Yuan Chen, Hyunwoong Park, Ho Kyong Shon, Yeek-Chia Ho, Dong Suk Han
Summary: In this study, alpha-LiAlO2 was used as a Li-capturing positive electrode material to recover Li from aqueous Li resources. The material synthesis was cost-effective and low-energy. It showed selective capture of Li+ ions in the concentration range of 100 mM to 25 mM. The system demonstrated the ability to handle complex solutions such as seawater reverse osmosis brine.
Review
Biochemistry & Molecular Biology
Hyeon Tae Kim, Morteza Afsari, Noel Peter B. Tan, Ho Kyong Shon, Leonard D. Tijing
Summary: Thermally localized solar-driven water evaporation (SWE) has been increasingly developed in recent years for cost-efficient freshwater production. Multistage SWE systems, with their simple structure and high solar-to-thermal conversion rates, have attracted much attention. In this study, currently designed multistage SWE devices were reviewed and examined based on their characteristics and performances. The key factors to consider include heat and mass transport, conversion efficiency, water production rate, and kWh/number of stages. These reviewed designs have the potential to be adopted for small-scale solar desalination, providing sufficient freshwater in regions with limited access.
Article
Engineering, Environmental
Sharaniya Roobavannan, Youngwoo Choo, Dai Quyet Truong, Dong Suk Han, Ho Kyong Shon, Gayathri Naidu
Summary: Lithium (Li) is increasing in value due to its use in energy storage devices for electric vehicles. Seawater mining of Li is a sustainable alternative to conventional land mining. In this study, a hybrid nanomaterial, HMO@ZIF, was developed to selectively adsorb Li from seawater. The encapsulation of zeolitic imidazolate frameworks (ZIF) onto hydrogen manganese oxide (HMO) particles led to improved Li uptake through increased surface area, additional functional groups, and zinc ion intercalation.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Chemical
Jiaxi Jiang, Pema Dorji, Umakant Badeti, Weonjung Sohn, Stefano Freguia, Sherub Phuntsho, Ibrahim El Saliby, Ho Kyong Shon
Summary: Human urine is a valuable source of fertilisers, and this study investigated the use of a hybrid MBR and MCDI system for nutrient removal and recovery. The results showed that MCDI effectively removed nitrate, phosphate, and ammonium from the treated urine, and achieved high recovery rates in the concentrated brine. The study further demonstrated the feasibility of using MCDI for nutrient recovery without the need for chemical additives.
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, Environmental
Junghyun Kim, Leonard Tijing, Ho Kyong Shon, Seungkwan Hong
Summary: Membrane distillation (MD) has potential for high salinity treatment and zero liquid discharge (ZLD), but faces challenges in fouling and scaling under high recovery conditions. This study proposes alternating current (AC) operation for electrically conductive membrane distillation (ECMD) to control both cations and anions, increasing water recovery by 27%.
Article
Chemistry, Physical
Paige K. Summers, Alexander Angeloski, Richard Wuhrer, Michael B. Cortie, Andrew M. McDonagh
Summary: Understanding and controlling the sintering behavior of gold nanoparticles is crucial for various applications. Thiol-protected gold nanoparticles were found to exclusively form disulfide species upon sintering. The sintering event showed no significant differences in temperature or composition under different atmospheres, except for cases with high volatility disulfides. Hexadecylthiol-stabilized particles showed no significant differences in sintering temperature under different pressures.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Engineering, Chemical
Mohammad Mahbub Kabir, Golam Md. Sabur, Mst. Mahmoda Akter, Sang Yong Nam, Kwang Seop Im, Leonard Tijing, Ho Kyong Shon
Summary: This paper explores the integration of electrodialysis (ED) technology in the water industries (WIN) for sustainable desalination, resource, and energy recovery. The authors provide a comprehensive analysis of recent advancements and conduct a techno-economic and environmental sustainability analysis. They also discuss the use of ED for energy recovery and assess scaling-up issues based on recent scientific findings. The study offers novel insights for the development of a sustainable closed-loop economy in the water industries.
Article
Engineering, Chemical
Weonjung Sohn, Jiaxi Jiang, Sherub Phuntsho, Ho Kyong Shon
Summary: This study demonstrates that incorporating biofilm carriers and powdered activated carbon in a membrane bioreactor enhances nitrification rates and reduces hydraulic retention time, resulting in higher energy efficiency and decreased footprint.
Article
Engineering, Chemical
M. S. Sajna, Tasneem Elmakki, Kira Schipper, Seungwon Ihm, Youngwook Yoo, Byungsung Park, Hyunwoong Park, Ho Kyong Shon, Dong Suk Han
Summary: This review paper explores the potential of seawater desalination plants to address the increasing demand for water, energy, mineral resources, and foods, particularly in resource-scarce regions. By utilizing seawater and integrating renewable energy sources, these plants can contribute significantly to sustainable development and promote a circular economy.
