Article
Polymer Science
Dawei Zhang, Jiaming Wang, Lu Ren, Xiangchun Meng, Boyi Luan, Yumin Zhang
Summary: In order to improve the oil-water separation efficiency and promote the reinjection of ASP-produced water, a novel cationic graft copolymer CDC was synthesized by ultrasonically assisted copolymerization. The flocculation effect of copolymer CDC on ASP-produced water was investigated, showing better oil removal rate and light transmittance for Nan 4-8-produced water compared to Sanyuan-6-produced water. The addition of CDC promoted the coalescence and separation of large-diameter oil droplets in produced water.
Article
Engineering, Environmental
Arti Mahto, Sumit Mishra
Summary: Through optimizing reaction parameters, a novel Guar Gum based flocculant was successfully synthesized with high flocculation efficiency of 88.15% for kaolin and 81.36% for coal fine. The modification was confirmed by various characterization techniques such as SEM, TGA, FTIR, CHNS, etc, showing excellent performance in water treatment.
JOURNAL OF POLYMERS AND THE ENVIRONMENT
(2021)
Article
Chemistry, Applied
Nisha Kumari, Sumit Mishra
Summary: This study synthesized flocculants based on Moringa gum and optimized their performance by grafting different monomers. The results showed that MOG-g-(PAM-co-PAA) had the best flocculation efficiency. Modified Moringa gum based flocculants have potential applications in treating various pollutants.
CARBOHYDRATE POLYMERS
(2022)
Article
Polymer Science
Hao Zhang, Yaoyao Zheng, Haitao Wang, Na Chang
Summary: A starch-based adsorbing-flocculating bifunctional material St-A/F was prepared through graft copolymerization using a safe and clean Fenton initiating system. St-A/F has the dual functions of adsorbing and flocculating, capable of removing both hydro-soluble reactive and insoluble disperse dyes simultaneously. The adsorption behaviors fit better with the pseudo-second-order kinetic and Langmuir isothermal model. In flocculation study, St-A/F showed high removal ratios to three disperse dyes. It also increased the Zeta potential and isoelectric point, allowing for destabilization and aggregation of negatively charged disperse dye particles. St-A/F has great advantage in treating complex textile printing and dyeing wastewater.
Article
Biotechnology & Applied Microbiology
Lei Wang, Qi-meng Lu, Tao Zeng, Jing-wen Yang, Xue-qin Hu, Hong-bin Zhang
Summary: A highly efficient and environmentally friendly cationic dextran derivative flocculant was synthesized, capable of effectively removing suspended particles and flocculating Escherichia coli under various conditions. The flocculant exhibited good biodegradability and material sustainability, holding significant implications for industrial wastewater treatment and microbial cell harvesting.
BIOCHEMICAL ENGINEERING JOURNAL
(2022)
Article
Biochemistry & Molecular Biology
Juho Antti Sirvio, Anu M. Kantola, Sanna Komulainen, Svitlana Filonenko
Summary: The chemical modification of chitosan using itaconic acid resulted in a chitosan derivative with new properties, showing zwitterionic behavior, high mechanical strength, and flame-retardant properties. This modified chitosan has potential applications in producing self-standing films.
Article
Polymer Science
Jung Soo Kim, Dong Hyun Kim, Youn Suk Lee
Summary: The addition of compatibilizer improved the mechanical and barrier properties of PP/EVOH blends, with better results in the L and F types.
POLYMER-PLASTICS TECHNOLOGY AND MATERIALS
(2021)
Article
Green & Sustainable Science & Technology
Zhiwei Lin, Chunhui Zhang, Yufeng Hu, Peidong Su, Bingxu Quan, Xuezhi Li, Zhao Zhang
Summary: Due to the high turbidity and trace emulsified oil in mine drainage, the coagulation/flocculation treatment process has low settling efficiency and poor treatment efficiency. Therefore, there is an urgent need to develop efficient, economical, and stable flocculants. In this study, a new hybrid flocculant Al-P(AM-DMDAAC-BA) was synthesized and characterized for its physical and chemical properties. Batch wastewater treatment experiments showed that Al-P(AM-DMDAAC-BA) has excellent turbidity and emulsified oil removal performance.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Chemistry, Applied
Yongjun Sun, Yuanyuan Yu, Xing Zheng, Aowen Chen, Huaili Zheng
Summary: This study investigated the structure, performance, and flocculation process of three magnetic flocculants, with MC-g-PAA showing larger floc size and fractal dimension. The results also demonstrated that under certain conditions, MC-g-PAA achieved maximum floc size and fractal dimension values.
CARBOHYDRATE POLYMERS
(2021)
Article
Engineering, Chemical
Betul Tasdelen, Deniz Tzlen Cifci, Sureyya Meric
Summary: New hydrogel composites composed of chitosan/hyaluronic acid/itaconic acid were synthesized by gamma radiation, resulting in improved swelling and manganese adsorption capacity. The inclusion of itaconic acid in the gel formulation of the hydrogels enhanced both Mn uptake and release properties. Adsorption capacities of Mn by the composites were competitive with some CS based composites used in Mn adsorption studies.
DESALINATION AND WATER TREATMENT
(2021)
Article
Polymer Science
Sasan Dan, Maryam Kalantari, Ata Kamyabi, Madjid Soltani
Summary: In this research, chitosan-itaconic acid graft copolymer hydrogel was successfully synthesized with optimized reaction conditions. The structure, morphology, thermal stability, swelling behavior, antibacterial properties, and drug-loading capabilities of the hydrogel were studied and characterized, with successful loading of ciprofloxacin as a model drug.
Article
Environmental Sciences
Eman F. Aboelfetoh, Abdelmeguid E. Aboubaraka, El-Zeiny M. Ebeid
Summary: The study utilizes a system composed of chitosan and graphene oxide to effectively remove turbidity and various pollutants from surface water, achieving high removal efficiency for algae, bacteria, dyes, and heavy metal ions. The coagulation system displayed exceptional economic value for raw surface water and wastewater treatment, with the sludge exhibiting extraordinary adsorption capacity.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Engineering, Environmental
Mehtap Tanyol, Gulben Torgut
Summary: A new graft copolymer was synthesized and used as an adsorbent for the rapid removal of tetracycline from aqueous solutions, showing excellent adsorption capacity and environmental friendliness. The study also examined the kinetics, isotherms, and thermodynamics of adsorption, with thermodynamic parameters indicating that the adsorption process was exothermic and spontaneous.
JOURNAL OF POLYMERS AND THE ENVIRONMENT
(2022)
Article
Engineering, Chemical
Chengyun Zhou, Eydhah Almatrafi, Xiaofeng Tang, Binbin Shao, Wu Xia, Biao Song, Weiping Xiong, Wenjun Wang, Hai Guo, Sha Chen, Guangming Zeng
Summary: This study investigates the effect of the position of organic acid functional groups on the performance of carbon nitride as a photocatalyst for sulfamethazine (SMZ) removal. It was found that phthalic acid modified carbon nitride exhibited the best degradation performance for SMZ removal, with (center dot)O2- and h(+) playing a significant role in the photocatalytic process.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Biochemistry & Molecular Biology
Meng Mei, Peiyu Du, Weilin Li, Lei Xu, Teng Wang, Jingxin Liu, Si Chen, Jinping Li
Summary: In this work, lignocellulosic peanut hull biomass was used as an adsorbent to remove anionic Congo red and Cr(VI) ions from water. The lignocellulosic biopolymer was modified by graft copo-lymerization to enhance its removal performance. The adsorption efficacy of the modified biopolymer was tested and the results showed that it had good reusability and could remove anionic contaminants through various interactions.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Engineering, Environmental
Chaofan Zheng, Huaili Zheng, Yongjuan Wang, Yongjun Sun, Yanyan An, Hongxia Liu, Shuang Liu
JOURNAL OF HAZARDOUS MATERIALS
(2019)
Article
Engineering, Environmental
Yanyan An, Huaili Zheng, Xinyu Zheng, Qiang Sun, Yuhao Zhou
JOURNAL OF HAZARDOUS MATERIALS
(2019)
Article
Chemistry, Physical
Yuhao Zhou, Huaili Zheng, Yili Wang, Rui Zhao, Hongxia Liu, Wei Ding, Yanyan An
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2020)
Article
Engineering, Environmental
Yanyan An, Huaili Zheng, Qiang Sun, Xinyu Zheng, Wangqing Liu, Xiaomin Tang, Zikang Xiong
JOURNAL OF HAZARDOUS MATERIALS
(2020)
Article
Engineering, Environmental
Yanyan An, Huaili Zheng, Zhishuang Yu, Yongjun Sun, Yili Wang, Chun Zhao, Wei Ding
JOURNAL OF HAZARDOUS MATERIALS
(2020)
Article
Engineering, Environmental
Yanyan An, Mengxin Han, Huaili Zheng, Wei Ding, Qiang Sun, Chao Hu, Liushi Zheng
Summary: A hollow-structured self-floating copper-loaded catalyst was successfully prepared and applied for As(III) oxidation, showing good surface area, stability, and catalytic efficiency. The catalyst can float and be easily separated from water, demonstrating stability after multiple cycles and effectiveness in various geochemical conditions.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Engineering, Environmental
Yaoyao Huang, Chao Hu, Yanyan An, Zikang Xiong, Xuebin Hu, Guizhi Zhang, Huaili Zheng
Summary: A novel adsorbent, phosphorylated chitosan-coated magnetic silica nanoparticles, was successfully fabricated and used for highly selective adsorption of lead. The adsorbent exhibited excellent acid resistance and selective capture of lead, showing potential for efficiently removing lead from aqueous solutions.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Engineering, Environmental
Wei Ding, Weilong Xiao, Huaili Zheng, Shixin Zhang, Hongxia Liu, Yanyan An, Rui Zhao
CHEMICAL ENGINEERING JOURNAL
(2020)
Article
Green & Sustainable Science & Technology
Yanyan An, Peng Xiao, Huaili Zheng, Rui Zhao, Mengxin Han, Weiwei Mao, Yisen Li
Summary: A multi-functional adsorbent was synthesized by co-grafting m-phenylenediamine and sodium allyl sulfonate on the surface of hollow glass microsphere (HGM), showing excellent adsorption capacities for acid green 25 and basic fuchsin dyes. The mechanism of adsorption involves electrostatic attraction, π-π stacking, and hydrogen bonds as the potential interaction forces between dyes and adsorbents.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Engineering, Environmental
Chao Hu, Junyi Jiang, Yanyan An, Xincheng Jiang, Qiang Sun, Huaili Zheng, Hong Li
Summary: A novel self-floating silica adsorbent was prepared by introducing sulfonic acid groups onto hollow glass microspheres via post-grafting technique, showing satisfactory adsorption performance for CIP and Ni2+ with stable self-floating capability and wide pH adaptability. Langmuir and Elovich models fit the adsorption isotherm and kinetic data well, and thermodynamic calculation confirms the spontaneity and feasibility of the process. The main adsorption mechanism involves electrostatic interaction.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Environmental Sciences
Qiang Sun, Xuebin Hu, Huaili Zheng, Yanyan An, Jinyao Qu, Zhanmei Zhang, Sarfaraz Khan
Summary: The study showed that the novel hollow mesoporous coagulant can simultaneously enrich and degrade DCFS, with significant enrichment effect in the range of pH 4.0-9.0, and degradation of DCFS in the presence of ultraviolet irradiation and permanganate. The method of using reloaded coagulant for DCFS removal has a potential application in environmental remediation.
Article
Engineering, Environmental
Rui Zhao, Yuxuan Wang, Yanyan An, Liuwei Yang, Qiang Sun, Jiangya Ma, Huaili Zheng
Summary: A low-cost chitin-biocalcium (CC) composite was developed for the removal of ciprofloxacin (CIP) in water, showing superior removal capacity, rapid kinetics, high efficiency, and wide pH adaptability. The study revealed that the removal process was controlled by chemisorption and mass transport, and the superior performance was attributed to cation bridging, cation complexation, and hydrogen bonding.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Environmental Sciences
Yisen Li, Yanyan An, Rui Zhao, Yiran Zhong, Siyu Long, Junling Yang, Jialin Li, Huaili Zheng
Summary: In this study, an amphoteric self-floating adsorbent (Am-SA) was synthesized to capture dyes in a wide pH range. The co-precipitation phenomenon of dyes was observed and the mechanism was revealed through simulation. The aggregation phenomena were also observed in various mixed dye systems. The utilization of co-precipitation and adsorption mechanisms can significantly improve dye removal. This study is of great importance for developing cost-effective treatment strategies.
Article
Engineering, Environmental
Yanyan An, Yugo Sato, Huaili Zheng, Guanghao Chen
Summary: This study explored a new separation method using hollow glass microsphere (HGM) carriers to separate Cu2+, Ni2+, Zn2+, and Cr3+ heavy metal ions. The self-floating system achieved higher metal removal rates compared to sedimentation, and the recovered metals had a high concentration suitable for reutilization in industrial electroplating.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Engineering, Chemical
Xiaoyue Chen, Huaili Zheng, Wenying Xiang, Yanyan An, Bincheng Xu, Chuanliang Zhao, Shixing Zhang
DESALINATION AND WATER TREATMENT
(2019)
Article
Environmental Sciences
Toshimi Nakajima, Mao Kuragano, Makoto Yamada, Ryo Sugimoto
Summary: This study compared the contribution of submarine groundwater discharge (SGD) to river nutrient budgets at nearshore and embayment scales, and found that SGD-derived nutrients become more important at larger spatial scales.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Fan Liu, Lei Zhang, Chongyang Zhang, Ziguang Chen, Jingguang Li
Summary: NO2 emissions from wall-mounted gas stoves used for household heating have become a significant source of indoor pollution in Chinese urban areas. The high indoor concentration of NO2 poses potential health risks to residents. It is urgently necessary to establish relevant regulations and implement emission reduction technologies to reduce NO2 emissions from wall-mounted gas stoves.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Letter
Environmental Sciences
Hans Peter H. Arp, Raoul Wolf, Sarah E. Hale, Sivani Baskaran, Juliane Gluege, Martin Scheringer, Xenia Trier, Ian T. Cousins, Harrie Timmer, Roberta Hofman-Caris, Anna Lennquist, Andre D. Bannink, Gerard J. Stroomberg, Rosa M. A. Sjerps, Rosa Montes, Rosario Rodil, Jose Benito Quintana, Daniel Zahn, Herve Gallard, Tobias Mohr, Ivo Schliebner, Michael Neumann
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Philomina Onyedikachi Peter, Binessi Edouard Ifon, Francois Nkinahamira, Kayode Hassan Lasisi, Jiangwei Li, Anyi Hu, Chang-Ping Yu
Summary: This study investigates the relationship between dissolved organic matter (DOM) and Rare Earth Elements (REEs) in sediments from Yundang Lagoon, China. The results show four distinct fluorescent components, with protein-like substances being the most prevalent. Additionally, the total fluorescence intensity and LREE concentrations exhibit a synchronized increase from Outer to Inner to Songbai Lake core sediments. The findings demonstrate a strong correlation between DOM content and pollution levels.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Surya Gupta, Pasquale Borrelli, Panos Panagos, Christine Alewell
Summary: The objective of this study is to incorporate soil hydraulic properties into the erodibility factor (K) of USLE-type models. By modifying and improving the existing equations for soil texture and permeability, the study successfully included information on saturated hydraulic conductivity (Ksat) into the calculation of K factor. Using the Random Forest machine learning algorithm, two independent K factor maps with different spatial resolutions were generated. The results show that the decrease in K factor values has a positive impact on the modeling of soil erosion rates.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Jesmin Akter, Wendy J. M. Smith, Yawen Liu, Ilho Kim, Stuart L. Simpson, Phong Thai, Asja Korajkic, Warish Ahmed
Summary: The choice of workflow in wastewater surveillance has a significant impact on SARS-CoV-2 concentrations, while having minimal effects on HF183 and no effect on HAdV 40/41 concentrations. Certain components in the workflow can be interchangeable, but factors such as buffer type, chloroform, and homogenization speed can affect the recovery of viruses and bacteria.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Yu Luo, Xueting Yang, Diwei Wang, Hongmei Xu, Hongai Zhang, Shasha Huang, Qiyuan Wang, Ningning Zhang, Junji Cao, Zhenxing Shen
Summary: Atmospheric PM2.5, which can generate reactive oxygen species (ROS), is associated with cardiorespiratory morbidity and mortality. The study found that both the mass concentration of PM2.5 and the DTT activity were higher during the heating season than during the nonheating season. Combustion sources were the primary contributors to DTT activity during the heating season, while secondary formation dominated during the nonheating season. The study also revealed that biomass burning had the highest inherent oxidation potential among all sources investigated.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Erin L. Murphy, Leah R. Gerber, Chelsea M. Rochman, Beth Polidoro
Summary: Plastic pollution has devastating consequences for marine organisms. This study uses a trait-based framework to develop a vulnerability index for marine mammals, seabirds, and sea turtles in Hawai'i. The index ranks 63 study species based on their vulnerability to macroplastic pollution, providing valuable information for species monitoring and management priorities.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Kenji Maurice, Amelia Bourceret, Sami Youssef, Stephane Boivin, Liam Laurent-Webb, Coraline Damasio, Hassan Boukcim, Marc-Andre Selosse, Marc Ducousso
Summary: Growing pressure from climate change and agricultural land use is destabilizing soil microbial community interactions. Little is known about microbial community resistance and adaptation to disturbances, hindering our understanding of recovery latency and implications for ecosystem functioning. This study found that anthropic disturbance and natural disturbance have different effects on the topology and stability of soil microbial networks.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Yunhao Li, Yali Feng, Haoran Li, Yisong Yao, Chenglong Xu, Jinrong Ju, Ruiyu Ma, Haoyu Wang, Shiwei Jiang
Summary: Deep-sea mining poses a serious threat to marine ecosystems and human health by disturbing sediment and transmitting metal ions through the food chain. This study developed a new regenerative adsorption material, OMN@SA, which effectively removes metal ions. The adsorption mechanism and performance of the material for metal ion fixation were investigated.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Antonio Medici, Margherita Lavorgna, Marina Isidori, Chiara Russo, Elena Orlo, Giovanni Luongo, Giovanni Di Fabio, Armando Zarrelli
Summary: Valsartan, a widely used antihypertensive drug, has been detected in high concentrations in surface waters due to its unchanged excretion and incomplete degradation in wastewater treatment plants. This study investigated the degradation of valsartan and identified 14 degradation byproducts. The acute and chronic toxicity of these byproducts were evaluated in key organisms in the freshwater trophic chain.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Jiang Lin, Lianbao Chi, Qing Yuan, Busu Li, Mingbao Feng
Summary: This study investigated the photodegradation behavior and product formation of two representative pharmaceuticals in simulated estuary water. The study found that the formed transformation products of these pharmaceuticals have potential toxicity on marine organisms, including oxidative stress and damage to cellular components.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Hua Fang, Dongdong Jiang, Ye He, Siyi Wu, Yuehong Li, Ziqi Zhang, Haoting Chen, Zixin Zheng, Yan Sun, Wenxiang Wang
Summary: This study revealed that exposure to lower levels of air pollutants led to decreased pregnancy rates, with PM10, NO2, SO2, and CO emerging as the four most prominent pollutants. Individuals aged 35 and above exhibited heightened susceptibility to pollutants.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Ali Shaan Manzoor Ghumman, Rashid Shamsuddin, Amin Abbasi, Mohaira Ahmad, Yoshiaki Yoshida, Abdul Sami, Hamad Almohamadi
Summary: In this study, inverse vulcanized polysulfides (IVP) were synthesized by reacting molten sulfur with 4-vinyl benzyl chloride, and then functionalized using N-methyl D-glucamine (NMDG). The functionalized IVP showed a high mercury adsorption capacity and a machine learning model was developed to predict the amount of mercury removed. Furthermore, the functionalized IVP can be regenerated and reused, providing a sustainable and cost-effective adsorbent.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Rita Bonfiglio, Renata Sisto, Stefano Casciardi, Valeria Palumbo, Maria Paola Scioli, Erica Giacobbi, Francesca Servadei, Gerry Melino, Alessandro Mauriello, Manuel Scimeca
Summary: This study investigated the presence of aluminum in human colon cancer samples and its potential association with biological processes involved in cancer progression. Aluminum was found in tumor areas of 24% of patients and was associated with epithelial to mesenchymal transition (EMT) and cell death. Additional analyses revealed higher tumor mutational burden and mutations in genes related to EMT and apoptosis in aluminum-positive colon cancers. Understanding the molecular mechanisms of aluminum toxicity may improve strategies for the management of colon cancer patients.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)