Article
Polymer Science
Francisco de Borja Ojembarrena, Sergio Garcia, Noemi Merayo, Angeles Blanco, Carlos Negro
Summary: This study focuses on the synthesis and characterization of BC membranes, and their application to remove Ni(II) and Pb(II) from wastewater. It was found that BC membranes have excellent adsorption properties for both metals, with Ni(II) removal mechanism involving crystallization and Pb(II) removal being driven by the adsorption process.
Article
Chemistry, Physical
Anjana Biswas, B. P. Chandra, C. Prathibha
Summary: Solid material CCTNT exhibits a wide pH range for adsorption of heavy metal ions, making it applicable for groundwater and wastewater remediation. It also shows ultrafast adsorption of all five contaminants and has the ability to efficiently remove all five heavy metal ions simultaneously. These advantages make CCTNT a superior material for adsorption of heavy metal ions from water.
APPLIED SURFACE SCIENCE
(2023)
Review
Environmental Sciences
Jianlong Wang, Xuan Guo
Summary: Heavy metal pollution is a severe environmental issue, and adsorption is an effective method for removing heavy metals from water. This review summarizes and discusses the adsorption kinetics and isotherms of heavy metals by different adsorbents. It includes a review of the sources of heavy metal pollution and the adsorption technology, a systematic summary of the adsorption capacity of various adsorbents, and a discussion on the origins, assumptions, importance, and applications of adsorption models.
CRITICAL REVIEWS IN ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2023)
Article
Polymer Science
David Choque-Quispe, Carlos A. Ligarda-Samanez, Betsy S. Ramos-Pacheco, Aydee M. Solano-Reynoso, Justiniano Quispe-Marcatoma, Yudith Choque-Quispe, Diego E. Peralta-Guevara, Edgar L. Martinez-Huaman, Odilon Correa-Cuba, Mery Luz Masco-Arriola, Washington Julio Lechuga-Canal, Fred Montalvo Amanca
Summary: This study introduced a novel composite material for the removal of heavy metals from wastewater. The composite, made of activated nanoclay and hydrocolloid, demonstrated a high adsorption capacity and chelating ability. Experimental results showed that the composite achieved a removal percentage of over 99% for lead, and also exhibited good performance in removing arsenic, cadmium, and zinc.
Article
Environmental Sciences
Shivangi, Siddhant Bhardwaj, Tapan Sarkar
Summary: Ni/NiO/SnO2 hybrids were successfully synthesized, showing high metal ion adsorption capacity and organic dye photodegradation capability, with a good removal effect on pollutants in water.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Review
Environmental Sciences
N. Nirmala, V Shriniti, K. Aasresha, J. Arun, K. P. Gopinath, S. S. Dawn, A. Sheeladevi, P. Priyadharsini, Kathirvel Birindhadevi, Nguyen Thuy Lan Chi, Arivalagan Pugazhendhi
Summary: Access to clean water has reduced in recent years due to pollution and man-made activities. The adsorption method has advantages in wastewater treatment. Graphene-based adsorbents can adsorb and catalyze reactions simultaneously. Graphene aerogels are effective in removing heavy metals and dyes. Graphene composites have mesoporous and microporous structures with good adsorption efficiency.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Biochemistry & Molecular Biology
Shiyu Xie, Jing Hu, Ke Li, Yaxin Zhao, Na Ma, Yaomin Wang, Yujuan Jin, Gaiping Guo, Rakesh Kumar, Jian Li, Jin Huang, Huafeng Tian
Summary: The combination of zein, collagen, and polyvinyl alcohol (PVA) in nanofibers showed promising adsorption properties for Cu2+ ions. Collagen nanofibers exhibited superior adsorption performance compared to zein nanofibers. The optimal adsorption was achieved at 50% protein content.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Environmental Sciences
P. N. Omo-Okoro, O. Adeiga, T. Velempini, E. Prabakaran, C. J. Curtis, K. Pillay
Summary: The present study successfully adsorbed nickel ions using a polyaniline-macadamia nutshells nanocomposite. The optimal conditions were found to be pH 7 and an adsorbent dosage of 2 g/L. The results indicate that surface complexation and cation-pi interaction may be involved in the adsorption process, and physical adsorption is present.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2023)
Article
Green & Sustainable Science & Technology
Yan Yu, Jiangtao He, Jingyang Sun, Zixuan Pei, Qidong Wu, Rui Yu
Summary: China, as a large agricultural country, produces a significant amount of crop straw annually. Therefore, the development of cost-effective and economic application of invasive plants is necessary. Biochars derived from crop straw have shown promise as adsorbent materials, however, research comparing biochars derived from different types of crop straw under the same conditions is limited. This study characterized five different biochars and found that GBC exhibited higher adsorption capacities for heavy metals. The results highlight the importance of selecting and utilizing plant-based biochar for different heavy metals.
Article
Engineering, Environmental
Dennis C. Ong, Stephanie B. Tumampos, Chi-Chuan Kan, Sheila Mae B. Pingul-Ong, Benny Marie B. Ensano, Mark Daniel G. de Luna
Summary: This study optimized manganese recovery from groundwater treatment sludge using reductive acid leaching to produce manganese dioxide adsorbents for the competitive removal of Cu(II) and Pb(II). The produced adsorbents exhibited high adsorption capacities for Pb(II) and Cu(II), demonstrating their potential for treating heavy metal-containing industrial effluents.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Environmental Sciences
Deva Nand Sharma, Anil Yadav
Summary: This paper presents a novel adsorbent, Chhotidudhi, for the removal of nickel ions from aqueous solutions. The adsorbent was characterized using FTIR, XRD, SEM, and TGA. The adsorbent showed strong bond with metals and had an amorphous structure with a porous morphology. At optimized conditions, the adsorption capacity for the adsorbent was 52.4 mg/g and 109.05 mg/g, with removal efficiencies of 81.6% and 93.8% for ETR and ETA, respectively. The experimental results fit well with Langmuir and pseudo-second-order reactions.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Environmental Sciences
Mojtaba Mansoorianfar, Hafezeh Nabipour, Farshid Pahlevani, Yuewu Zhao, Zahid Hussain, Akbar Hojjati-Najafabadi, Hien Y. Hoang, Renjun Pei
Summary: This review presents the latest suggested adsorption mechanisms, kinetics, and isotherms of MOFs-based materials for removing cadmium ions, comparing different MOFs and their mechanisms of cadmium ion removal. The future role of MOFs in removing environmental contaminants is discussed, along with the research gap and limitations of MOFs as adsorbents in actual applications.
ENVIRONMENTAL RESEARCH
(2022)
Article
Engineering, Environmental
Ataollah Babakhani, Majid Sartaj
Summary: This study successfully removed cadmium from aqueous solution using Cd(II)-imprinted chitosan hydrogel beads. The synthesis was confirmed through various analyses, and the adsorption process parameters and mechanisms were determined through batch adsorption tests and isotherm investigations.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Engineering, Environmental
Xiaoyuan Zhang, Yu Liu
Summary: In this study, a novel nanostructured layered sodium vanadosilicate adsorbent was synthesized for the concurrent removal of Cu2+, Ni2+, and Co2+ from wastewater in a ternary system. The adsorption equilibrium was reached within 30 minutes, indicating fast adsorption kinetics, with Cu2+ showing the highest affinity among the three ions.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Engineering, Chemical
Bo Sun, Wenge Chen, Hui Zhang, Ahmed Elmarakbi, Yong-Qing Fu
Summary: Li2Si2O5 nano-brush coated carbon cloth was synthesized and demonstrated to have high adsorption capabilities for Mn2+, Cu2+ and Ni2+ ions in wastewater treatments. The adsorption behavior followed a pseudo-second-order model and a Langmuir isothermal model, and the key mechanisms were identified as surface complexation and ion-exchanges. The brush-like nanorods showed advantages of highly effective adsorption due to their active sites and efficient ion diffusion and transport.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Engineering, Chemical
Xu Yang, Jieshi Xiao, Jian Huang, Kaixiang Peng
Summary: This study introduces an online convolutional adversarial autoencoder (AAE) model to learn representative industrial process information. By extracting features that reflect diverse information and follow a Gaussian distribution, the model improves the accuracy of fault detection and removes redundant information through a feature selection strategy.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2024)
Article
Engineering, Chemical
Shao-Yang Wu, Meng-Tsun Lai, Chung-Hui Hsu, Kevin C. W. Wu, Yesong Gu
Summary: This study investigated the effectiveness of using Fe-based MOF or MIL-100(Fe) in conjunction with a PEDOT-modified Pt electrode for detecting the synthetic azo dye tartrazine. By modifying the electrode with two different methods, favorable lower reductive potentials, competitive sensitivities, and good repeatability and stability were achieved in all MIL-100(Fe)/PEDOT/Pt electrodes.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2024)