Article
Environmental Sciences
M. Chegeni, M. Mehri, Z. Shokri Rozbahani
Summary: In this study, a novel bioadsorbent was prepared using persimmon tannin and graphitic carbon nitride for the adsorption of methyl orange from aqueous solution. The optimal conditions and adsorption mechanism were determined through experimental and model data, and the PT/g-C3N4 showed higher efficiency for pollutant removal compared to g-C3N4 after four cycles.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2022)
Article
Biochemistry & Molecular Biology
Nadia Tahari, Pedro L. de Hoyos-Martinez, Nagore Izaguirre, Nefzi Houwaida, Manef Abderrabba, Sameh Ayadi, Jalel Labidi
Summary: Chitosan/tannin/montmorillonite films are effective biosorbents for the removal of methyl orange from aqueous media. The films show high removal efficiency, large adsorption capacity, and follow pseudo second order kinetic and Langmuir isotherm models. Thermodynamic parameters suggest physical adsorption and exothermic behavior.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2022)
Article
Chemistry, Applied
Zhi Chen, Zhi-Bo Zhang, Jun Zeng, Zhi-Jie Zhang, Shan Ma, Cong-Ming Tang, Jun-Qiang Xu
Summary: In this study, a polyethyleneimine-modified chitosan/Ce-UIO-66 composite hydrogel (PEI-CS/Ce-UIO-66) was successfully prepared using the ex-situ blend method. The synthesized composite hydrogel was characterized and its adsorption performance for methyl orange (MO) was evaluated. The results showed that PEI-CS/Ce-UIO-66 exhibited excellent adsorption properties for MO through electrostatic interaction, pi-pi stacking, and hydrogen bonding. These findings suggest that the PEI-CS/Ce-UIO-66 composite hydrogel has potential for the adsorption of anionic dyes.
CARBOHYDRATE POLYMERS
(2023)
Article
Biochemistry & Molecular Biology
Fatima Zaman, Meng Zhang, Ying Liu, Zhilin Wang, Liqing Xu, Dayong Guo, Zhengrong Luo, Qinglin Zhang
Summary: This study reveals that DkmiR397 regulates the synthesis of PAs in persimmon by repressing the expression of DkLAC2, providing a potential target for manipulating PAs metabolism in persimmon.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Multidisciplinary Sciences
Yoko Tsurunaga, Tetsuya Takahashi, Mina Kanou, Misaki Onda, Mika Ishigaki
Summary: This study found that adding polysaccharides can effectively remove astringency, prevent astringency recurrence after freezing or heating, and inhibit syneresis, thus producing high-quality persimmon paste.
Article
Chemistry, Applied
Yangyang Jia, Meizhu Dang, Ibrahim Khalifa, Yajie Zhang, Yunfei Huang, Kaikai Li, Chunmei Li
Summary: This study investigated the effect of persimmon tannin (PT) on the emulsification performance of persimmon pectin (PP) using multi-scale methods. The results showed that high levels of PT enhanced the emulsifying and emulsion stability potential of PP, while low levels of PT had a damaging effect on the emulsion. High concentrations of PT promoted the formation of a three-dimensional network structure and improved the viscoelasticity of the interfacial film.
FOOD HYDROCOLLOIDS
(2023)
Article
Engineering, Chemical
Shao-zhong Hu, Ting Huang, Nan Zhang, Yan-zhou Lei, Yong Wang
Summary: The discharge of wastewater rich in heavy metals and organic substances leads to ecosystem deterioration, environmental pollution, and food pollution. Metal organic frameworks (MOFs) are highly promising materials for wastewater treatment due to their large specific surface area and pore volume, as well as their structure designability. In this study, a novel adsorbent (PEI@UiO-66-NH2) was synthesized and it exhibited improved chemical stability and increased adsorption sites compared to common UiO-66-NH2. The adsorption behaviors of PEI@UiO-66-NH2 were systematically studied, and it was found that it can reach adsorption equilibrium within 5 minutes for Pb(II) and methyl orange (MO). The theoretical adsorption capacities for Pb(II) and MO were found to be 692.80 mg/g and 497.51 mg/g, respectively. The study also established dynamic theoretical adsorption models, providing guidance for scale-up experiments in wastewater treatment. PEI@UiO-66-NH2 showed excellent performance in recycling Pb(II) and MO, indicating its promising application in removing wastewater contaminants.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Review
Biochemistry & Molecular Biology
Ruifeng Wang, Xin Shi, Kaikai Li, Alex Bunker, Chunmei Li
Summary: One distinguishing feature of the persimmon is its high proanthocyanidins content, known as persimmon tannin (PT), which has many health benefits. This review aims to summarize the literature on the relationship between PT structure and activity, as well as the potential mechanisms underlying its health benefits. The unique structure of PT and its conversion into oligomeric proanthocyanidins, along with its effects on lipogenic and inflammatory signaling pathways, fatty acid oxidation, gut microbiota, and absorption properties, contribute to its multiple health benefits.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Engineering, Chemical
Erqiang Sun, Yongjian Jiang, Bohui Wang, Xiaorong Wang, Fengyang Zhao
Summary: In this study, novel catechol-polyethyleneimine (CCh-PEI) nano/submicro-particles (CP-NPs) were synthesized via a mussel-inspired co-precipitation method and used for highly efficient removal of methyl orange (MO). The results showed that CP-NPs exhibited optimal adsorption capacity at a specific mass ratio and followed the pseudo-second-order kinetics and Langmuir isotherm model. Furthermore, CP-NPs demonstrated excellent adsorption capacity and regeneration ability, suggesting its potential as a cost-effective and efficient adsorbent for MO removal.
Article
Polymer Science
Qian Li, Yujie Li, Yuehu Li, Yifan Chen, Qiang Wu, Siqun Wang
Summary: By connecting PEI, this study successfully overcomes the low graft efficiency of beta-CD directly onto CNC, obtaining CNC-PEI-CD/PAM with high selective cavity structure and dense surface charge of PEI. It shows superior adsorption performance to methyl orange and desired reusability, demonstrating huge potential in water purification.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Engineering, Environmental
Jifan Zhang, Yuxi Li, Yuqing Dai, Tao Lin, Haojian Shao, Yi Liu, Xunyong Liu
Summary: The efficient reuse of agricultural wastes, such as apple pomace, has attracted much attention due to its economic benefits and environmental reduction effects. Cellulose, the main component of apple pomace, is widely used as an adsorption material for dye removal. However, the unsatisfactory adsorption performance of cellulose necessitates improvements. In this study, dialdehyde cellulose (DAC) was synthesized from apple pomace cellulose and crosslinked with hyperbranched polyethyleneimine (HPEI) to prepare a HPEI-DAC hydrogel with enhanced adsorption sites and performance. The HPEI-DAC hydrogel showed high adsorption capacity and good regeneration ability, making it a promising adsorbent for azo dye wastewater treatment.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Food Science & Technology
Protiva Rani Das, Jong-Bang Eun
Summary: The study found that storage at -20 degrees C and -80 degrees C for up to 60 days effectively removes the astringency of persimmon fruits by decreasing proanthocyanidin concentration and altering tannin contents. The removal of astringency was accompanied by preservation of other physicochemical parameters during freezing. These findings suggest that freezing temperature treatments can aid in the removal of astringency from persimmon fruits, making them suitable for various food preparations or supplements.
JOURNAL OF FOOD SCIENCE AND TECHNOLOGY-MYSORE
(2021)
Article
Engineering, Chemical
Yupeng Shang, Gengzheng Zhu, Dexiang Yan, Qinze Liu, Tingting Gao, Guowei Zhou
Summary: The novel tannin-polyethyleneimine (TA-PEI) adsorbent fabricated via mussel-inspired polymerization exhibits highly efficient hexavalent chromium (Cr(VI)) adsorption capacity, with ultra-high Cr(VI) removal capacity and rapid adsorption rate. The adsorbent also shows excellent chemical reduction ability when treating Cr(VI) solutions.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2021)
Article
Chemistry, Applied
Jing Du, Meizhu Dang, Yangyang Jia, Yujuan Xu, Chunmei Li
Summary: Glutenin plays a more important role than gliadin in the changes induced by persimmon tannin, showing greater sensitivity to temperature and structural alterations.
Article
Engineering, Chemical
Shreya Mahajan, Varsha Srivastava, Mika Sillanpaa
Summary: The increasing global demand for valuable Sm(III) and Nd(III) in magnet industries and metallurgy has led to immense exploration concern in their procurement through secondary resources. Research indicates that Poly-D-galacturonic acid methyl ester shows significant adsorptive potential for the selective recovery of these rare earth elements.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Environmental Sciences
Elizabeth Alvarez-Chavez, Stephane Godbout, Mylene Genereux, Caroline Cote, Alain N. Rousseau, Sebastien Fournel
Summary: This study evaluated the effect of alternative filtering materials and bed aeration on the retention of nutrients and fecal bacteria in woodchip bedded stand-off pads for cows. The results showed that the alternative biofilters were more efficient in removing COD, SS, TN, and NO3-N, while conventional biofilters were more efficient for PO4-P removal. Aeration did not have a significant effect under the tested temperature conditions.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
Yike Zhang, Zengyi Ma, Zhuoting Fang, Yuandong Qian, Zhiping Huang, Yilong Ye, Jianhua Yan
Summary: This study investigates the application of oxygen enrichment melting technology in the melting of municipal solid waste incineration fly ash. The results demonstrate that oxygen enrichment technology can reduce energy consumption and operating costs, as well as decrease pollution emissions.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
Liangang Xiao, Mingkai Leng, Philip Greenwood, Rongqin Zhao, Zhixiang Xie, Zengtao You, Junguo Liu
Summary: This study investigates the effects of grazing exclusion on soil organic carbon (SOC) accumulation and vegetation recovery. It finds that grazing exclusion can increase the potential for SOC accumulation, and higher annual precipitation is positively correlated with SOC accumulation.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
Beatrice Cantoni, Jessica Ianes, Beatrice Bertolo, Selena Ziccardi, Francesco Maffini, Manuela Antonelli
Summary: This study evaluates the performance of ozonation and adsorption as in-series processes compared to standalone processes for the removal of Contaminants of Emerging Concern (CECs) in drinking water. The combination of both processes proves to be more effective than adsorption and ozonation alone. Ozonation improves the adsorption performance of poorly-oxidizable CECs but worsens that of well-oxidizable compounds. This research highlights the importance of considering both processes in the removal of CECs in drinking water treatment plants.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
Dan Li, Bingjun Liu, Yang Lu, Jianyu Fu
Summary: A new Standardized compound Drought and Saltwater intrusion Index (SDSI) was developed to detect changes in the severity of CDSEs in six estuaries. The study found that saltwater intrusion plays a dominant role in influencing SDSI severity, and CDSEs vary in frequency, duration and severity among different estuaries.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
Yong-Qiang Li, Rui Sun, Chong-Miao Zhang, Zi-Xuan Liu, Rui-tao Chen, Jian Zhao, Hua-dong Gu, Huan-Cai Yin
Summary: In this study, an electron beam excitation multi-wavelength ultraviolet (EBE-MW-UV) system was established and found to have significantly higher microbial inactivation effects compared to single-wavelength UV-LEDs in water. Mechanism analysis revealed that EBE-MW-UV damaged microbial DNA and proteins, and generated additional reactive oxygen species, leading to microbial inactivation.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
Kaili Ma, Xinxin Han, Qiujuan Li, Yu Kong, Qiaoli Liu, Xu Yan, Yahong Luo, Xiaopin Li, Huiyang Wen, Zhiguo Cao
Summary: This study reveals that the use of a tryptophan-degrading microbial consortium (TDC) can enhance the hydrolysis efficiency of waste activated sludge (WAS), increasing the yield and quality of short chain fatty acids (SCFAs) and improving the solubilization and release of organic substances from WAS.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
Ling Xiong, Rui Li
Summary: Incorporating Ecosystem Service Value (ESV) into land use planning can provide informed land management decisions. This study evaluates the ESV of Guizhou Province in China's karst region. The results show an increase in total ESV over the past two decades due to ecological restoration projects.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
M. Geetha Jenifel
Summary: This article discusses the importance of water and the pollution of freshwater resources, and introduces the use of machine learning models and blockchain technology to predict and protect water quality.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
Stanslaus Terengia Materu, Taotao Chen, Chang Liu, Daocai Chi, Meng Jun
Summary: The study showed that H2SO4-modified biochar can reduce P leaching, increase soil available P, and enhance plant P uptake in alternate wetting and drying irrigation systems. Biochar additions B20A and IAWDB20A-M were effective in improving yield, reducing P leaching, and increasing APB.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
Amir Nouri, Ali Akbar Zinatizadeh, Sirus Zinadini, Mark Van Loosdrecht
Summary: This study focuses on the development of an air-lift bio-electrochemical reactor (ALBER) with a continuous feeding regime to enhance nitrogen removal from synthetic wastewater. The effect of temperature, hydraulic retention time (HRT), N -NH+4 /TN ratio, and current density on the reactor performance was investigated, and the ALBER achieved a maximum TN removal of 73%. The results suggest that the ALBER has potential for treating industrial wastewater at low temperatures.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
Peifang Wang, Guoxiang You, Yang Gao, Juan Chen, Xun Wang, Chao Wang
Summary: This study investigated the ecological processes of microbial communities and N- and P-transformation processes in multistage agricultural drainage ditches. The results showed that the microbial communities were co-shaped by agricultural practices and ditch size, which further governed the N and P removal performance.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
Xiaofeng Niu, Huan Wang, Tao Wang, Peiyu Zhang, Huan Zhang, Hongxia Wang, Xianghong Kong, Songguang Xie, Jun Xu
Summary: Microorganisms play a critical role in maintaining ecosystem balance, and environmental stressors can affect the assembly processes of microbial communities. The study found that different stressors have opposite effects on microbial community assembly in water and sediment, and warming has different influences compared to herbicides and nutrients.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
Yuqing Tan, Qiming Cheng, Fengwei Lyu, Fei Liu, Linhao Liu, Yihong Su, Shaochun Yuan, Wenyu Xiao, Zhen Liu, Yao Chen
Summary: The exacerbation of global warming, extreme weather events, and rapid urbanization have led to increased flooding in urban areas. China has adopted sponge city as an efficient means of preventing and controlling urban floods. Using a SWMM-FVCOM model, the hydrological reduction and control effect of sponge city construction (SPCC) within a university campus were evaluated. The study found that implementing SPCC effectively mitigates surface runoff and reduces the severity of urban flooding. However, the efficacy of runoff control decreases with longer rainfall return periods.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)
Article
Environmental Sciences
Zhonghan Chen, Qiuyan Li, Shibo Yan, Juan Xu, Qiaoyun Lin, Zhuangming Zhao, Ziying He
Summary: Tidal rivers are important biochemical reaction channels, receiving carbon from wastewater and agricultural drains, affecting CO2 emissions. Through modeling and data analysis, researchers explored carbon distribution, emissions, and greenhouse effects, emphasizing the potential of river management to change global CO2 emissions under climate change.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2024)