Article
Engineering, Chemical
Huiping Wang, Yanling Yang, Zhiwei Zhou, Xing Li, Jingfeng Gao, Rui Yu, Jiaqi Li, Nan Wang, Haiqing Chang
Summary: This study investigated the efficiency and mechanism of Bi2O3-TiO2/PAC composite combined with photocatalysis and coagulation for the removal of intracellular organic matter (IOM) from Microcystis aeruginosa. It was found that the optimized combined treatment effectively enhanced the removal of algal IOM, reducing the required coagulant dose and pH dependence. Pre-photocatalysis was effective in removing humic substances and building blocks, while coagulation preferred high-molecular weight biopolymers. The combined treatment resulted in improved coagulation performance, and was able to remove co-existing algal cells without damaging their integrity.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Chemical
Yuanli Liu, Cheng Li, Zimo Lou, Chuchen Zhou, Kunlun Yang, Xinhua Xu
Summary: The study proposed a combination of PFS and PAC to remove ppb-level Sb(V) from textile wastewater, achieving a maximum removal efficiency of 95.0%, reducing turbidity, and increasing active adsorption sites.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Environmental Sciences
Sen Lu, Libing Liu, Qinxue Yang, Hailu Demissie, Ruyuan Jiao, Guangyu An, Dongsheng Wang
Summary: This study systematically investigated the removal of composite pollutants microplastics and tetracycline using aluminum chloride coagulation. The mechanism and influencing factors of different pollutants during the removal process were identified.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Review
Environmental Sciences
Junjie Yu, Ruyuan Jiao, Hongyan Sun, Hui Xu, Yi He, Dongsheng Wang
Summary: This paper reviews the application of Fe(VI) in the treatment of microorganic pollutants (MOPs) in aquatic environment. Fe(VI) has the dual functionality of oxidation and coagulation, and can effectively remove various pollutants. It can also be used in combination with traditional coagulants or as a pretreatment for membrane treatment. The study provides guidelines for the application and development of Fe(VI) in the removal of MOPs, summarizing control parameters, utilization methods, and toxicity effects.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Chemistry, Multidisciplinary
Changxia Li, Patrick Guggenberger, Seung Won Han, Wei-Lu Ding, Freddy Kleitz
Summary: Covalent organic frameworks (COFs) have great potential as adsorbents due to their tailorable functionalities, low density, and high porosity. Constructing ultrathin COFs can increase the exposure of active sites to targeted molecules and enhance the adsorption capacity through a three-dimensional macroporous structure and well-exposed adsorption sites.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Engineering, Environmental
Zichun Yan, Li Shen, Zhibing Pei, Mingxia Yang, Wei Zhang
Summary: Poly Aluminum Chloride (PAC) and Poly Dimethyl Diallyl Propyl Ammonium Chloride (HCA) were used to prepare complex coagulants for enhanced coagulation pretreatment of domestic sewage. The optimal coagulant conditions were determined, and it was found that the PAC-HCA compound coagulant showed better treatment efficiency than PAC and HCA used alone. The mechanism of enhanced coagulation to remove nutrients is mainly electrical neutralization.
WATER SCIENCE AND TECHNOLOGY
(2023)
Editorial Material
Environmental Sciences
Daniel Arenas-Lago, Marco Race, Zhien Zhang, Avelino Nunez-Delgado
Summary: In this Virtual Special Issue, the Editors emphasized the importance of studying emerging pollutants and finding effective removal methods. They invited researchers to submit manuscripts focusing on sorbent materials and nanoparticle-based systems. In total, 83 submissions were received and 40 high-quality works were accepted, contributing valuable results to the scientific community and society.
ENVIRONMENTAL RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Feidias Bairamis, Ilaeira Rapti, Ioannis Konstantinou
Summary: In recent years, the interest in photocatalysis has grown rapidly due to its importance in environmental depollution and addressing the energy crisis. Graphitic carbon nitride (g-C3N4) photocatalyst has gained attention for its properties and ease of preparation, although efforts are needed to improve charge carrier separation efficiency. Z-scheme-based heterostructures have emerged as a promising approach for separating charge carriers and enhancing oxidation and reduction capability. This review focuses on the development and application of Z-scheme-based g-C3N4 composite materials in the past three years, particularly their photocatalytic efficiency for addressing emerging pollutants.
CURRENT OPINION IN GREEN AND SUSTAINABLE CHEMISTRY
(2023)
Article
Engineering, Environmental
Xiao Zhang, Lili Zhang, Chun Hu, Min Yang
Summary: Highly dispersed LaAlO3/Al2O3 framework Cu+/Cu2+ catalyst was synthesized by a solid-liquid mixed sol-gel method, which showed efficient removal of refractory pollutants over a wide pH range.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Environmental Sciences
Farooq Sher, Kashif Hanif, Abdul Rafey, Ushna Khalid, Ayesha Zafar, Mariam Ameen, Eder C. Lima
Summary: PAC has shown promising potential in purifying water sources, efficiently removing micropollutants without harmful impacts on the environment. By optimizing parameters like PAC dosing, removal efficiency can be significantly improved. Studies on both batch and pilot plant scales have demonstrated that PAC is an effective and feasible solution for micropollutant removal.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Biochemistry & Molecular Biology
Daniela Flores, C. Marisa R. Almeida, Carlos R. Gomes, Salete S. Balula, Carlos M. Granadeiro
Summary: The adsorption performance of mesoporous silica-based materials for inorganic and organic water pollutants was investigated. Different properties of the materials were tailored and characterized, and their influence on the removal of metal ions and organic dyes from aqueous solutions was explored. The results show that nanosized mesoporous silica nanoparticles with high surface area have a favorable adsorptive capacity for both types of water pollutants.
Article
Chemistry, Multidisciplinary
Huihui Gan, Shuo Pan, Xiuhang Liu, Ying Huang
Summary: In this study, a polyhedron microstructure Bi12TiO20/RGO photocatalyst was fabricated using the template-free hydrothermal method, and its visible-light-induced photocatalytic activity was evaluated. The results showed that the Bi12TiO20/RGO exhibited enhanced photocatalytic performance, attributed to the combination of the microstructured Bi12TiO20 inducing photogenerated charges and the RGO nanostructure acting as a photogenerated charge carrier.
Article
Engineering, Chemical
Yongjun Sun, Yuanyuan Yu, Deng Li, Jun Zhai, Huaili Zheng
Summary: The study investigated the coagulation behavior and floc characteristics of a hybrid flocculant called PAC-CA for removing TiO2 nanoparticles. Various factors such as monomer mass ratio, initiator concentration, and reaction temperature were studied to optimize the coagulation performance. The characterization of PAC-CA through different methods revealed its successful copolymerization and the effect of additives like kaolin and humic acid on coagulation efficiency.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Geosciences, Multidisciplinary
Daniel S. Goll, Philippe Ciais, Thorben Amann, Wolfgang Buermann, Jinfeng Chang, Sibel Eker, Jens Hartmann, Ivan Janssens, Wei Li, Michael Obersteiner, Josep Penuelas, Katsumasa Tanaka, Sara Vicca
Summary: Simulations suggest that vegetation's enhanced CO2 uptake from powdered rock can be a feasible option in mitigating climate change, with enhanced weathering being a potential negative emission technology. Amending soil with powdered basalt may effectively enhance ecosystem carbon storage, but scaling up and addressing potential side effects are necessary.
Review
Engineering, Environmental
Yue Yin, Chao Liu, Guohua Zhao, Yinguang Chen
Summary: The removal of environmental pollutants is essential for the sustainability of ecosystems and human health. Shewanella oneidensis (S. oneidensis) has shown great potential in removing various pollutants, such as heavy metals, inorganic non-metallic ions, and toxic organic compounds. However, while S. oneidensis can mineralize certain organic compounds and reduce specific pollutants through extracellular electron transfer, it requires additional strategies such as catalyst synthesis, bio-photocatalytic systems, Fenton reactions, microbial consortia formation, and genetic engineering for the removal of most organic pollutants. The industrial-scale application of S. oneidensis is still limited and requires further research and development of large-scale reactors.
JOURNAL OF HAZARDOUS MATERIALS
(2022)