Article
Biotechnology & Applied Microbiology
Peng Zhao, Zhanbin Huang, Qian Ma, Bolun Zhang, Ping Wang
Summary: In this study, artificial humic acid (A-HA) was prepared from food wastes and used to remove Pb (II) and Cd (II) from aqueous solution. A-HA exhibited superior adsorption for Pb (II) compared to Cd (II). The adsorption kinetics followed the pseudo-first-order model, and the adsorption capacities increased with initial concentration before stabilizing.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2022)
Article
Environmental Sciences
Lourdes Jara-Cobos, Maria Eulalia Penafiel, Carolina Montero, Miguel Menendez, Veronica Pinos-Velez
Summary: Ti-pillared bentonites were used to remove ciprofloxacin (CIP) from aqueous solutions. Pillared sodium bentonite (BSP) and pillared calcium bentonite (BCP) were prepared and characterized. The results showed that pillared bentonites had increased surface areas compared to natural ones, with BSP having a more porous structure and higher adsorption capacity than BCP. Kinetic and isotherm studies revealed that CIP adsorption followed a pseudo second-order kinetic model, with multilayer adsorption observed. The pH influence study indicated that CIP adsorption occurred at pH levels commonly found in wastewater treatment.
Article
Engineering, Environmental
Yan Chen, Zeguang Nie, Junkai Gao, Jiaqi Wang, Miaomiao Cai
Summary: In this study, a novel method for increasing the anti-hydrolytic ability and mechanical strength of traditional chitosan aerogel (CSA) was developed by bidirectional regeneration of chitosan and microcrystalline cellulose to synthesize chitosan-microcrystalline cellulose aerogel (CS-MCCA). Bentonite (BT) was introduced in the regeneration process to enhance the adsorption rate of CSA, leading to the development of an efficient adsorbent for Pb(II) removal, bentonite-chitosan-microcrystalline cellulose aerogel (BT-CS-MCCA). The bidirectional regeneration strategy of biomass resources presented a brand-new path for utilization in wastewater treatment.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Environmental Sciences
Na Zhang, Febelyn Reguyal, Sai Praneeth, Ajit K. Sarmah
Summary: A novel biochar-based magnetic nanocomposite (GSMB) was synthesized from white tea waste. The sorption properties and regeneration of GSMB for Pb(II) and Cd(II) were studied. The sorption process was dominated by chemisorption rather than physisorption, and Langmuir and Temkin models best described the sorption isotherms for Pb(II) and Cd(II) respectively. Iron oxides played a key role in the adsorption process, and the adsorption mechanisms involved surface electrostatic attraction and surface complexation. Among the regenerating agents, 0.1 M EDTA-2Na was the most effective for Pb(II) desorption. The adsorbent showed potential for reuse with approximately 54% of its adsorption capacity remained after three sorption-desorption cycles.
ENVIRONMENTAL POLLUTION
(2023)
Article
Chemistry, Multidisciplinary
Jing Li, Zhuanjun Zhao, Yiran Song, Yang You, Jie Li, Xiuwen Cheng
Summary: The Mg-doped ferrihydrite-humic acid coprecipitation showed remarkable sorption capacity for Pb(II) and Cd(II) in aqueous solution, with the sorption mechanism involving surface adsorption, surface complexation and surface functional groups, as well as ion exchange and precipitation. This low-cost and high-performance adsorption material has a wide range of application prospects.
CHINESE CHEMICAL LETTERS
(2021)
Article
Chemistry, Physical
Xian Guan, Xingzhong Yuan, Yanlan Zhao, Jing Bai, Ying Li, Yixin Cao, Yi Chen, Ting Xiong
Summary: In this study, FeMg-LDH loaded with bentonite (FeMg-LDH@bentonite) was prepared and characterized. The FeMg-LDH@bentonite exhibited high adsorption capability for Cd (II) and Pb (II), with adsorption mechanisms including surface complexation, ion exchange, and chemical deposition. The material shows promising potential for treating wastewater with heavy metals and various environmental water pollution treatments.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Environmental Sciences
Muhammad Zaheer Afzal, Salma Hameed, Muhammad Mohiuddin, Asim Abbasi
Summary: This study focuses on the simultaneous removal of three different fluoroquinolones from water using hydrogel beads of humic acid coated biochar and chitosan. The adsorption capacity of the adsorbent for the fluoroquinolones was determined, and it was found that the adsorbent was effective in removing the targeted drugs. Furthermore, the adsorbent showed good performance in desorption and regeneration processes.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Chemistry, Physical
Mengli Zhou, Yang Xu, Guangqian Luo, Qingzhu Zhang, Lin Du, Zehua Li
Summary: This study prepared Ce-Fe binary oxide modified bentonite for mercury removal from flue gas. The modified bentonite showed better removal performance and the removal mechanism was revealed. Furthermore, the deactivated modified bentonite can be effectively regenerated after thermal treatment.
APPLIED SURFACE SCIENCE
(2022)
Article
Environmental Sciences
Zhuanjun Zhao, Liwei Yao, Jie Li, Xiangbang Ma, Liangwei Han, Zhiyuan Lin, Shuqi Guan
Summary: This study investigated the impact of Ferrihydrite co-precipitation with humic acid on the fate of lead ions, Ferrihydrite aging, and lead adsorption properties. Results showed that carbon loading altered the structure and adsorption properties of iron oxyhydroxide. Additionally, the sorption process was influenced by pH and kinetic factors.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Engineering, Environmental
Tamara Alomar, Hazim Qiblawey, Fares Almomani, Riyadh I. Al-Raoush, Dong Suk Han, Nasir M. Ahmad
Summary: According to the review, many adsorbents showed good performance in removing humic acid from wastewater, including carbon-based and activated carbons, clay-based adsorbents, zeolites, iron-based/magnetic adsorbents, functionalized adsorbents, and natural adsorbents. Future research should focus on continuous adsorption processes, using actual wastewater for adsorption experiments, and cost analysis for industrial scale-up.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Environmental Sciences
Yingya Wang, Hanbing Zhang, Muhammad Yaseen, Zhangfa Tong, Ninghua Chen, Huazhen Shi
Summary: Organic modification of magnetic alkaline Ca-bentonite resulted in the preparation of a film material with magnetic separation ability and enhanced removal performance for heavy metal cations. The modified material exhibited higher adsorption capacity for heavy metal ions and could be efficiently recycled with minimal decrease in adsorption capacity.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Chemistry, Physical
Jiahui Deng, Yalin Cheng, Min Liu, Biyang Tu, Shan Xue, Haisheng Tao
Summary: Fe-Mn/SA-C prepared in this study is a cost-effective adsorbent for Cd(II) removal, showing excellent adsorption capacity and multiple adsorption mechanisms, making it suitable for treatment of cadmium-containing wastewater.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Polymer Science
Iolanda-Veronica Ganea, Alexandrina Nan, Carmen Roba, Iulia Neamtiu, Eugen Gurzau, Rodica Turcu, Xenia Filip, Calin Baciu
Summary: A new copolymer synthesized by combining chitosan and poly(benzofurane-co-arylacetic acid) was introduced for adsorption of toxic heavy metals. The results demonstrated high adsorption efficiency and recyclability of this naturally derived material.
Article
Biotechnology & Applied Microbiology
Tong Cai, Huihui Du, Xiaoli Liu, Baiqing Tie, Zhaoxia Zeng
Summary: Enhancing surface functional groups on biochar is crucial for improving its adsorption capacity towards toxic metals. The NaOH-C2H5OH modified biochar showed a higher specific surface area, more O-containing functional groups, and introduced more C=C groups, leading to enhanced adsorption properties, especially for Cd(II) and Pb(II). Spectroscopic analysis indicated that Cd(II)-pi and Pb(II)-pi interactions were the predominant mechanisms for the toxic metals' collection on the NaOH-C2H5OH modified biochar, with O-functional groups facilitating Pb(II) binding more effectively than Cd(II) in the mixture solution.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2021)
Article
Engineering, Environmental
Yatong Li, Xinbo Zhang, Huu Hao Ngo, Wenshan Guo, Dan Zhang, Huizhong Wang, Tianwei Long
Summary: Applying magnetic biochar as a UF membrane pretreatment strategy can effectively reduce membrane fouling in water purification processes.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
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)