Article
Crystallography
Siti Nor Adibah Mustapha, Nurul Aini Amran, Intan Lyana Roslan, Rubini Chandra Segaran, Shafirah Samsuri
Summary: Discharging oily wastewater into water bodies can have negative consequences on the marine ecological environment, necessitating effective treatment techniques. This study introduces the fractional freezing (FF) process as a new oil-water separation technique, which shows potential in separating oil from oily wastewater sources.
Article
Environmental Sciences
Yuhang Cai, Yi-Hao Luo, Xiangxing Long, Asad A. Zaidi, Yue Shi, Dandan Zhou, Bruce E. Rittmann
Summary: The study evaluated the temperature response of a novel biological treatment system for ship wastewater, demonstrating its effectiveness in meeting international discharge standards at low temperatures. It was found that the biofilm stage became more important for COD and TN removal at low temperatures, compensating for the deterioration in performance of the aerobic sludge.
Article
Environmental Sciences
Yuhang Cai, Yi-Hao Luo, Xiangxing Long, Asad A. Zaidi, Yue Shi, Dandan Zhou, Bruce E. Rittmann
Summary: Low and variable temperatures pose a challenge to ship wastewater treatment systems. However, the activated sludge/membrane-biofilm reactor (AS-ABfMemR) showed promising results in removing COD and TN from ship wastewater even at low temperatures, reducing the energy consumption for wastewater heating.
Article
Thermodynamics
Cristina Agabo-Garcia, Rosario Solera, Montserrat Perez
Summary: This study aims to determine the potential for biomethane production using an Anaerobic Sequential Batch Reactor to process slaughterhouse wastewaters. The results show that the reactor system has high methane production and biodegradation efficiency under optimal hydraulic retention times. Furthermore, pre-treatment of sludge and proper mixture with slaughterhouse wastewater can enhance biomethane production.
Article
Environmental Sciences
Zehao Wang, Hongwei Song, Lei Song, Zhenzhou Yin, Kai Hui, Wenjian Gao, Lili Xuan
Summary: The combination of electro-coagulation (EC) process and added free nitrous acid (FNA) improves sludge dewaterability and the removal of heavy metals. The EC process disrupts the sludge structure and adding FNA causes sludge cells to lyse, facilitating the removal of tightly bound extracellular polymeric substances (TB-EPS) and releasing bound water.
Article
Environmental Sciences
Nihan Canan Ozdemir, Esra Yel
Summary: This study investigates the treatment of HDPE, LDPE, PET, and PP plastic washing wastewater using sulfonated polystyrene as a flocculant. The results show that this flocculant effectively removes turbidity, COD, SS, and oil grease from the wastewater, providing a promising solution for the treatment of plastic washing wastewater.
WATER AIR AND SOIL POLLUTION
(2023)
Article
Engineering, Environmental
Jihyeon Lee, Yoojin Lee, Soyoun Kim, Yeon So, Yeomin Yoon, Chanhyuk Park
Summary: This study focuses on the treatment of dissolved silica in semiconductor wastewater. By optimizing the integrated electro-coagulation and microfiltration membrane process, efficient removal of silica was achieved. The combination of Al-Al electrodes and ceramic membranes showed superior performance in silica removal and fouling resistance.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Engineering, Chemical
Keug Tae Kim, Sanghwa Park
Summary: This study demonstrates that using granular activated carbon with thermal regeneration can efficiently remove microplastics from sewage treatment plants, and further enhance removal efficiency through electro-coagulation experiments.
Article
Engineering, Environmental
P. Sanghamitra, Debabrata Mazumder, Somnath Mukherjee
Summary: The discharge of oily wastewater poses a serious threat to the environment, and it is difficult to treat due to high COD, BOD, oil, and grease concentrations. A study was conducted using a batch suspended growth reactor, showing oil removal efficiency in the range of 62.84-85.45%, with the Haldane kinetic model as the best fit for biodegradation. The derived kinetic coefficients are useful for understanding substrate utilisation dynamics and designing efficient biological systems.
WATER SCIENCE AND TECHNOLOGY
(2021)
Article
Environmental Sciences
Senem Yazici Guvenc, Gamze Varank, Aleyna Cebi, Bestami Ozkaya
Summary: In this study, the application of the sequential acidification-EAP process for treating biodiesel wastewater resulted in high removal efficiencies for COD, oil-grease, and VFAs. The response surface methodology was used to optimize the EAP oxidation process, achieving a predicted maximum oil-grease removal efficiency of 98.3%.
WATER AIR AND SOIL POLLUTION
(2021)
Review
Chemistry, Physical
Emmanuel Mousset, T. Alan Hatton
Summary: The combination of electro-separation and electro-conversion processes in wastewater treatment is gaining interest. The development of electrochemical advanced oxidation processes and materials with new properties have renewed attention on older electro-separation technologies. Further research and innovative designs are needed.
CURRENT OPINION IN ELECTROCHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Xueye Wang, Lehui Ren, Wengui Zha, Zhouyan Li, Ruobin Dai, Zhiwei Wang
Summary: In this study, a filtration-enhanced electro-Fenton system was developed to remove PTSA from industrial wastewater with high efficiency. The system showed lower effluent biological toxicity and operating cost.
Article
Environmental Sciences
Tao Xu, Xiaotong Zheng, Yihui Zhou, Chunyou Zhu, Bonian Hu, Xiping Lei, Xueyuan Zhang, Gang Yu
Summary: The EF-PACC coupled process was found to be an effective method for treating Cu2+-organic wastewater, with a removal efficiency of Cu2+ reaching 99.59% and COD at 90.21%.SEM, EDS, XRD and FTIR were utilized for sludge characterization, while UV, ESR and GC-MS were employed to analyze organic matter concentration and decomposition products in the EF-PACC process.
Article
Green & Sustainable Science & Technology
Omar Khalifa, Fawzi Banat, C. Srinivasakannan, Faisal AlMarzooqi, Shadi W. Hasan
Summary: This study investigated a novel hybrid treatment method combining electrocoagulation, ceramic microfiltration membrane, and ozonation for treating oily wastewater, achieving good pollutant removal efficiency. The selected study variables included hydraulic retention time, aeration, current density, mode of power supply, and initial pH of the sample. The results demonstrated that the ozonation-assisted electro-membrane hybrid method shows potential in treating oily wastewater.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Environmental Sciences
Safwat M. Safwat, Nouran Y. Mohamed, Mostafa M. El-Seddik
Summary: This study aims to assess the performance of the electrocoagulation process with a titanium electrode for manganese removal and conduct a life cycle assessment (LCA) of the process. The results show that under the optimal operating conditions of initial pH=7, CD=10 mA/cm2, gap distance=2 cm, and 1 g/L NaCl, the maximum removal efficiency of manganese can reach 96.5% after 60 minutes. For real wastewater, the highest removal efficiencies for manganese and chemical oxygen demand after 60 minutes were 91.3% and 92%, respectively. Additionally, the LCA identified global warming, human non-carcinogenic toxicity, and terrestrial ecotoxicity as the most important impact categories in this study.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
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)