Article
Chemistry, Physical
Xiuqing Li, Zhaomin Zhang, Chanchan Shen, Yuansheng Pei
Summary: This study investigated the effects of sodium alginate (SA) concentrations, alginate types, Fe3+ concentrations, and gelation times on the structures and mechanical stabilities of DWTR granules. The results showed that low SA concentrations resulted in incomplete crosslinking, while high SA concentrations changed the shape of the granules. The presence of high G-block content in SA increased the mechanical strength but decreased the specific surface area of the granules. Fe3+ concentrations did not affect the morphology of the DWTR granules. The resulting granular DWTR exhibited a comparable P adsorption capacity to the original powder, outperforming traditional P adsorption materials and high-temperature calcination produced pellet DWTR.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Engineering, Chemical
Julita Sarko, Terese Leonaviciene, Ausra Mazeikiene
Summary: This research investigated the ability of two materials, waste generated during water treatment and wastewater treatment, to remove phosphates from water. The experiments were carried out in the laboratory, and the sorption processes were modeled based on results from batch experiments. The study found that incinerated sewage sludge (ISS) showed a higher sorption capacity for phosphate phosphorus compared to quartz sand (OQS) in batch experiments.
Article
Environmental Sciences
Mengyue Wang, Shunwen Bai, Xiuheng Wang
Summary: In order to address clogging issues in stormwater filtration systems, a drinking water treatment residual (DWTR)-based granule (DBG) substrate was developed by pyrolyzing and granulating DWTR with bentonite and corncob. The DBG showed improved stability and enhanced adsorption capacity for heavy metals, but lower adsorption capacity for phosphate compared to DWTR. The involvement of DBG in stormwater filtration systems resulted in consistent and effective removal of Cu(II), Pb(II), Cd(II) and PO4-P, with irreversible and strong interaction between contaminants and DBG.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Engineering, Environmental
Liping Pang, Susan Lin, Aruni Premaratne, Annabelle Tham, Phillip Abraham, Chris Nokes
Summary: Point-of-use filters are commonly used in developing communities to treat household drinking water, with activated carbon filters proving more effective than other types in removing protozoa. Additional treatment such as water boiling or ultraviolet disinfection is necessary when using other filter types to meet protozoan removal requirements.
JOURNAL OF WATER PROCESS ENGINEERING
(2021)
Article
Engineering, Environmental
Jacklyn Monserate Baldovia-lim, Mark Daniel G. de Luna, Ralf Ruffel M. Abarca, Carl Francis Z. Lacson, Nurak Grisdanurak, Ming-chun Lu
Summary: Anthropogenic activities and industrial processes release large amounts of nickel into the environment, leading to potential risks to public and ecological health. A method called fluidized-bed non-seeded granulation process has been found effective in removing and recovering metals, including nickel. This study focused on precipitating nickel using phosphate and investigated the effects of bi-pH operation, molar ratio, initial nickel concentration, and co-existing chemical compounds. The results showed that bi-pH operation improved the granulation process by generating heterogeneous granulation, while co-existing compounds reduced granulation efficiency due to nickel complexation, ionic competition, and precipitate dissolution.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Environmental Sciences
Kamila Jessie Sammarro Silva, Lyda Patricia Sabogal-Paz
Summary: This study examined different recovery methods for protozoa from water treatment plant residues, finding that purified suspensions yielded better results, although there were still challenges with lower recovery efficiencies. Further research is needed to overcome the complexity of the matrices, increase recovery efficiencies, and take into consideration the effects on protozoa viability.
ENVIRONMENTAL TECHNOLOGY
(2021)
Article
Biochemistry & Molecular Biology
Collin Knox Coleman, Eric Mai, Megan Miller, Shalini Sharma, Clark Williamson, Hemali Oza, Eleanor Holmes, Marie Lamer, Christopher Ly, Jill Stewart, Mark D. Sobsey, Lydia S. Abebe
Summary: Viruses are major contributors to global diarrheal disease morbidity and mortality, with most filtration technologies ineffective in virus removal. To meet the WHO health-based risk target, a drinking water filter must achieve a 5 Log(10) virus reduction. Using chitosan acetate and chitosan lactate with ceramic water filtration can effectively remove viruses and bacteria.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Chemistry, Multidisciplinary
Jiaxin Xu, Yuan Tian, Zibiao Li, Beng Hoon Tan, Karen Yuanting Tang, Kam Chiu Tam
Summary: Trace amounts of pharmaceuticals and personal care products (PPCPs) in water systems can be harmful, yet difficult to detect. This study developed magnetic nanoparticles with good adsorption performance for pharmaceutical residues using emulsion polymerization.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2022)
Article
Environmental Sciences
Wenting Wang, Sangmin Park, Byeong-gyu Choi, Jeong-Eun Oh
Summary: This study investigated the occurrence and removal of four benzotriazoles (BTRs) and five benzothiazoles (BTHs) in drinking water treatment plants (DWTPs) and bottled water. The average concentrations of BTRs and BTHs were highest in raw water, followed by treated water and bottled water. Different distribution patterns were observed with 1H-BTR being dominant in raw water and BTH being predominant in bottled water. BTRs were efficiently removed, especially during adsorption processes, while BTHs were not effectively removed in DWTPs.
ENVIRONMENTAL POLLUTION
(2023)
Article
Environmental Sciences
Joan Dalmau-Soler, Ruben Ballesteros-Cano, Ma Rosa Boleda, Miquel Paraira, Nuria Ferrer, Silvia Lacorte
Summary: This study examined the presence of microplastics in the Llobregat river basin in Catalonia, Spain, and their removal efficiency in the drinking water treatment plant (DWTP). Sand filtration was identified as the key stage in microplastic removal, with ultrafiltration/reverse osmosis proving more effective for removal than ozonation/carbon filtration. Preliminary migration tests were also conducted to identify potential sources of microplastics in each treatment step.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Green & Sustainable Science & Technology
Kai Ning, Shaocheng Zheng, Yuting He, Yun Hu, Shiyou Hao, Qingliang Cui, Hansong Chen
Summary: In this study, a method of Fe-modified water treatment residues (Fe-WTR) was proposed to enhance the removal efficiency of fluoride (F-) from water. The maximum adsorption capacities of WTR and Fe-WTR for F- were determined, and the kinetics and mechanism of F- adsorption by Fe-WTR were investigated. Fe-WTR exhibited excellent resistance to interference from coexisting anions and pH changes, making it suitable for various environmental applications. This study provides deeper insights into the F-removal mechanism by WTR and offers potential for future modifications of WTR for effective water treatment.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Environmental Sciences
Diana Ordonez, Andrea Valencia, Bianca Pereira, Ni-Bin Chang
Summary: The increasing needs of drinking water due to population growth require the exploration of new tap water sources. However, these sources often contain dissolved natural organic matter (NOM), such as tannic acid, which affects water color. This study focuses on developing a cost-effective and sustainable sorption media, ZIPGEM, for color removal in tap water treatment.
ENVIRONMENTAL RESEARCH
(2022)
Editorial Material
Multidisciplinary Sciences
Paolo Tronville, Vincenzo Gentile, Jesus Marval
Summary: Adopting standardized and reliable methodologies is crucial in accurately measuring particle removal efficiency for developing fibrous materials to control airborne contamination. This article introduces well-established aerosol science and technology concepts often overlooked or misused in interdisciplinary studies on new fibrous materials for particle filtration. The authors recommend best practices for experimental assessments and reporting to ensure a reliable evaluation of new airborne particle filtration media and technologies.
NATURE COMMUNICATIONS
(2023)
Article
Environmental Sciences
Malcolm Watson, Jasmina Nikic, Aleksandra Tubic, Marijana Kragulj Isakovski, Marko Solic, Bozo Dalmacija, Jasmina Agbaba
Summary: This study investigated the reuse of spent filter sand (SFS) as an adsorbent for treating arsenic contaminated drinking water, comparing its performance with synthetic iron oxide coated sands (IOCS). The results suggest that SFS may be successfully reused as a very economically and environmentally sustainable solution for small waterworks requiring both As(V) and As(III) removal during drinking water treatment.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Engineering, Environmental
Shuyuan Tang, Ling Gao, Aisi Tian, Tianrui Zhao, Donglei Zou
Summary: This article studied the coagulation behavior of microplastics (MPs) that are difficult to remove during drinking water treatment. The results showed that both the size and concentration of MPs had a significant impact on coagulation, with size being the main factor. The type of MPs did not have a significant effect on coagulation. After optimization of operating conditions, the removal efficiency of MPs with a size ≥13 μm could reach over 70% using PAC and PAM. In the coagulation process, PAC played the most important role through electrical neutralization, while PAM's adsorption bridging and net sweeping assisted in coagulation.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Chemistry, Physical
Wenjing Tan, Chunmei Gao, Shifeng Ji, Yunqing Xing, Yi Guo, Baogui Liang
Summary: Membrane separation technology is widely used in wastewater treatment due to its cost-effectiveness and productivity. However, organic membrane fouling caused by humic acid is a major barrier to its further development. This study successfully addressed this issue through the production of composite materials and self-cleaning membranes, providing beneficial strategies and solutions for membrane contamination problems.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Qichang Peng, Qingdong Ruan, Bin Wang, Jinyuan Liu, Chao Huang, Xingwang Zhu, Dan Li, Liangliang Liu, Yinchuan Wang, Xiaolin Zhang, Jia Yan, Paul K. Chu, Hui Xu
Summary: The escalating issue of water pollution has led to significant attention in the field of photocatalysis. In this study, OV-Sb2WO6-X photocatalyst with oxygen vacancies was synthesized, which exhibited enhanced charge separation efficiency and improved photocatalytic activity. The introduction of oxygen vacancies was successfully controlled and characterized, and the modified photocatalyst showed superior degradation efficiency for dye wastewater treatment.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Wangcheng Zhang, Cunchuan Zheng, Hu Xie, Weichao Du
Summary: By using a specific curing agent ETB, the problem of dispersion and stability for oily epoxy resin in cement slurry system has been successfully solved. The application of the emulsified curing agent ETB in oilfield cement slurry system shows good rheological performance, resistance to high temperature and high pressure water loss, and corrosion resistance.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
O. I. Krivonos, A. Babenko, O. B. Belskaya
Summary: This study synthesized biochar based on sapropel and investigated the effects of chemical modification on its textural characteristics, acid-base properties, and adsorption properties. The results showed that the chemical modification increased the fraction of micropores, specific surface area, and changed the surface properties of biochar. The experiment also revealed that biochar pretreated with alkali exhibited the maximum adsorption capacity for copper ions. A conceptual model identifying the mechanisms of copper adsorption on sapropel-based biosorbent was proposed.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
H. Lachhab, N. Benzbiria, A. Titi, S. Echihi, M. E. Belghiti, Y. Karzazi, A. Zarrouk, R. Touzani, C. Jama, F. Bentiss
Summary: The corrosion inhibitory potency of two new pyrimidine-pyrazole derivatives, PPA and PPC, was evaluated for mild steel in 1 M HCl. The results showed enhanced inhibition activities with increased concentration, reaching maximal values of 91.15% and 92.39% for PPA and PPC, respectively. However, the mitigation potency decreased with increasing temperature. SEM and XPS analysis revealed that PPA and PPC adsorbed on the mild steel surface, forming a shielding layer that prevented the dissolution of the steel in the acidic solution.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Shanmugapriya Sivalingam, D. Jeya Sundara Sharmila, Goutham Golla, Lakshmanan Arunachalam, Tarunendu Singh, G. Karthikeyan, A. Shanthi, Kannan Malaichamy
Summary: This study aims to develop a nano-biofungicide comprising of volatile essential oil molecules to enhance its efficacy in the field of agriculture through easily scalable green synthesis technique. The nano biofungicide was prepared through one pot hot melt ultrasonication technique with easy water dispersibility and long term stability. The physico-chemical analysis revealed that, nano bio-fungicides were amorphous sphere-shaped nanoparticles with low melting point. The encapsulation efficiency of major components of essential oil was determined, and it was found that they followed Higuchi model of release kinetics. The essential oil loaded nanostructured lipid carrier showed significantly higher mycelial growth inhibition compared to pure essential oil, indicating enhanced bio-efficacy.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Yinlong Li, Yingqing Zhan, Yiwen Chen, Hongshan Jia, Ximin Chen, Fei Zhu, Xulin Yang
Summary: In this study, ZnO quantum dots decorated MXene nanosheets were used as a functional filler for waterborne epoxy coating. The improved dispersion and synergy of ZnO QDs and MXene nanosheets enhanced the anticorrosion performance of the coating.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Fucheng Guan, Jing Tao, Qiang Yao, Zheng Li, Yihang Zhang, Shi Feng, Jianbin Sun, Qiang Yang, Xuecui Song, Jing Guo, Yuanfa Liu
Summary: This paper presents a method for preparing adsorbent materials based on biomass that can efficiently adsorb methylene blue. The experimental results show that the material has a hierarchical structure, high adsorption capacity, and reusability.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Pengfei Hu, Zuli Mo, Weiliang Wang, Chengzhe Li, Zhaojia Guo, Guanqing Lin, Zhimin Guo
Summary: This study developed a novel in-situ particle vision and measurement (PVM) system to investigate heterocoagulation between coarse and fine particles in mineral processing. The experimental results showed that the degree of heterocoagulation decreased with increasing pH and stirring speed. Furthermore, under certain hydrodynamic conditions, coal particles were more distributed at the rear of the glass bead.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Tanveer ul Haq Zia, Anwar ul Haq Ali Shah, Behisht Ara, Kashif Gul
Summary: A label-free immunosensor for detection of hepatitis C core antigen was fabricated using a ternary nanocomposite based on polypyrrole, silver doped zinc oxide, and exfoliated graphene. The immunosensor demonstrated low detection limit, high selectivity, and stability.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Xiaoyan Feng, Jiachen Li, Lijun Liang, Linli Zhu, Sa Liu, Li Ren
Summary: In this study, polystyrene divinylbenzene microspheres were surface-modified by poly(carboxybetaine methacrylate) to develop an efficient hemoperfusion adsorbent for the removal of protein-bound toxins. The modified microspheres showed increased adsorption capacity and better biocompatibility, making them promising for clinical hemoperfusion therapy.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Xiaoye Bi, Dong Xue, Yunpeng Wang, Chencheng Lv, Zexiong Li, Tao Zhao
Summary: This research aimed to develop a durable and formaldehyde-free flame retardant treatment for cotton fabrics. The results demonstrated successful grafting of phosphorous acid (PA) onto cotton fabrics, leading to enhanced flame resistance while maintaining the desired fabric characteristics.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Ruolin Wang, Wenjuan Sun, Haisheng Han, Dongping Tao
Summary: This study finds that Al-starch colloidal depressants can effectively inhibit the flotation of ultrafine calcite and chlorite, and increase the grade of valuable minerals. The chemisorption of Al-starch on mineral surface changes the functional group peaks and generates new O-Al functional groups.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Wondimu K. Wakejo, Ali Maged, Beteley T. Meshesha, Joon W. Kang, Abayneh G. Demesa, Sandip Chakrabarti, Thallada Bhaskar, Ashok Kumar Gupta, Amit Bhatnagar
Summary: Simultaneously removing different pharmaceutical pollutants from wastewater is an important environmental issue, and the use of a system that can remove multiple contaminants at once is necessary. Functionalized biochar (FBC) has been found to be effective in simultaneously removing acetaminophen and ciprofloxacin and other pharmaceutical pollutants.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)
Article
Chemistry, Physical
Yu Wang, Fengwen Yan, Jie Wu, Zhijun Huang, Liuting Song, Shunda Yuan
Summary: In this study, Cu single atoms are anchored on the external surface of g-C3N4 nanofibers to maximize atom utilization. This catalyst exhibits excellent Fenton-like catalytic activity and good stability due to the full utilization of Cu active sites.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2024)