Article
Environmental Sciences
Andres Sarrion, Angeles de la Rubia, Charles Coronella, Angel F. Mohedano, Elena Diaz
Summary: Hydrothermal carbonization offers a solution for the valorization and energy recovery of moist biomass waste. This study evaluated the hydrothermal treatment of dewatered waste-activated sludge (DWAS) at various temperatures and reaction times, with or without the addition of acid. The addition of acid during hydrothermal treatment aided the solubilization of nitrogen and phosphorus, but careful control of reaction time was required to prevent the recrystallization of phosphorus in the hydrochar.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Engineering, Environmental
Nico Lambert, Pieter Van Aken, Ilse Smets, Lise Appels, Raf Dewil
Summary: The integration of ultrasonic sludge disintegration in a conventional biological wastewater treatment plant has been found to reduce sludge production and improve the biodegradability of sludge. Ultrasonic treatment also improves sludge settling characteristics and leads to improved effluent quality.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Green & Sustainable Science & Technology
Dafne Crutchik, Oscar Franchi, David Jeison, Gladys Vidal, Alicia Pinto, Alba Pedrouso, Jose Luis Campos
Summary: Small wastewater treatment plants in Chile are often not designed to consider the potential utilization of generated sludge. By implementing a sludge-ozonation system, the treatment costs can be reduced by up to 47%.
Article
Green & Sustainable Science & Technology
Theresa Constanze Sichler, Christian Adam, David Montag, Matthias Barjenbruch
Summary: The agricultural sewage sludge utilization in Germany is becoming less important due to new laws requiring phosphorus recovery from sewage sludge in wastewater treatment plants. Different future disposal scenarios show that around 70-77% of phosphorus in sewage sludge will likely be recovered.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Engineering, Environmental
Lei Jiang, Qiushi Shen, Qian Zhang, Yanting Zeng, Wenwen Wang, Yuanxiang Mao, Fangying Ji
Summary: The effects of MW treatment, combined MW-alkali (MA) treatment, and combined MA-water elutriation (MAW) treatment on sludge solubilization were studied, aiming at the recovery of carbon sources and nutrients. Various parameters such as MW power input, heating time, NaOH dosages, alkali treatment durations, and sludge solids concentration were explored, with optimal values achieved for each treatment. MW treatment disrupted sludge flocs and biomass cell membranes, while MA treatment resulted in a reduction of VSS/TSS ratio. Water elutriation after MA treatment further enhanced the release of nutrients from the sludge. Factors like MW power inputs, heating duration, alkali treatment time, and NaOH dosages had significant effects on sludge solubilization.
CHEMICAL ENGINEERING JOURNAL
(2021)
Review
Environmental Sciences
An Ding, Rourou Zhang, Huu Hao Ngo, Xu He, Jun Ma, Jun Nan, Guibai Li
Summary: This review focuses on the environmental sustainability of urban sludge management schemes and the potential for resource recovery and energy savings through Life Cycle Assessment (LCA). Comparative analysis reveals differences in environmental impacts between existing and emerging technologies, highlighting the importance of addressing toxic effects and minimizing environmental damage in future LCA research.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Majid Ebrahimi, Morteza Hassanpour, David W. Rowlings, Zhihui Bai, Kameron Dunn, Ian M. O'Hara, Zhanying Zhang
Summary: This study investigated the effects of biomass type on nutrient recovery and heavy metal removal from digested sludge by hydrothermal treatment (HTT). Blending biomass with digested sludge for HTT treatment increased nitrogen recovery but slightly decreased phosphorus recovery. Different biomasses had varying effects on the removal of heavy metals.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Environmental Sciences
Majid Ebrahimi, Morteza Hassanpour, David W. Rowlings, Zhihui Bai, Kameron Dunn, Ian M. O'Hara, Zhanying Zhang
Summary: This study investigated the effects of different biomass types on nutrient recovery and heavy metal removal from digested sludge through hydrothermal treatment. The results showed that blending hardwood sawdust with digested sludge increased the recovery of nitrogen, while slightly decreasing the recovery of phosphorus. Blending biomass also reduced the contents of macro-metals in the treated solids, though the specific effects varied with different biomasses. The study provides valuable information for the selection of lignocellulosic biomass for sludge treatment.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Environmental Sciences
Kurumi Hashimoto, Narumi Kubota, Tetsuji Okuda, Satoshi Nakai, Wataru Nishijima, Hiroshi Motoshige
Summary: Sludge ozonation is a promising technology for reducing waste sludge volume from biological wastewater treatment process. Using ultra-fine bubbles (UFBs) as ozone carriers can improve the efficiency of ozone treatment and reduce the ozone dose required. UFBs reduce the ozone requirement in sludge and contribute to the acceleration of bacterial death in sludge treated with ozone.
Review
Environmental Sciences
Harishvar Jothinathan, Ajit Pratap Singh
Summary: The rise in population and urbanization has led to the urgent need for a robust fecal sludge management value chain to ensure a secure restructuring of the global sanitation system. This paper examines the characteristics of fecal sludge, its impact on public health and the environment, and the importance of adopting proper treatment technologies for a pollution-free environment.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Engineering, Environmental
Zixuan Wang, Zhen He
Summary: Simultaneous phosphorus leaching and nutrient recovery from wastewater can be achieved through electrochemical fermentation, which is a significant step towards sustainable economy.
Article
Environmental Sciences
Mohamed El-Qelish, Mohamed Mahmoud
Summary: In order to meet the global demand for fertilizers, there is an urgent need to recover macro-nutrients from non-conventional sources. Sludge reject water, a by-product of sewage sludge dewatering, is considered an ideal feedstock for bioelectrochemical nutrient recovery. By mixing sludge reject water with livestock wastewater, the recovery and up-concentration of macronutrients can be optimized, leading to increased current output and NH4+ concentration factor.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Engineering, Environmental
Ilaria Righetto, Raed A. Al-Juboori, Juho Uzkurt Kaljunen, Anna Mikola
Summary: The study evaluated the effectiveness of tannin-based HTH product in improving landfill leachate quality for nitrogen recovery purposes. The optimized combination of dosage and pH showed removal of total nitrogen, total phosphorus, and total organic carbon, while ammonia increased. The treatment also demonstrated decent removal of micropollutants and metals in the leachate.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Agricultural Engineering
Qiulai He, Xiaohui Yan, Zhiyi Xie, Peng Xu, Zhidong Fu, Jinfeng Li, Liang Liu, Peng Bi, Baokun Xu, Jingwei Ma
Summary: The upgrade from wastewater treatment plants to water resources recovery facilities has introduced the use of aerobic granular sludge (AGS) for sewage treatment, which shows promising phosphorus recovery potential. In this study, the AGS-based simultaneous nitrification, denitrification, and phosphorus removal process coupled with side-stream phosphorus recovery was developed and tested with municipal wastewater. Results demonstrated that the AGS-SNDPRr achieved stable phosphorus recovery efficiency of 63.40%, while further reducing in situ sludge by 7.7-10%. The enhanced performance of the process was mainly attributed to the Matthew effect of Candidatus_Competibacter, a typical denitrifying glycogen accumulating organism (DGAO).
BIORESOURCE TECHNOLOGY
(2023)
Article
Environmental Sciences
Xiangjuan Sun, Binhan Liu, Lingjun Zhang, Kyohei Aketagawa, Binjie Xue, Yinji Ren, Jianfeng Bai, Yong Zhan, Sisi Chen, Bin Dong
Summary: By comparing the effects of high and low concentration ozone on partial ozonation of returned sludge, it was found that high concentration ozone can more effectively reduce organic matter and excess sludge production, with stronger nutrient removal capacity. While there were no significant differences in the treatment properties of excess sludge, the advantages of high concentration ozone mainly lie in the sludge solubilization rate and impact on carbon source utilization capacity in bioreactors.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Engineering, Environmental
Bilge Alpaslan Kocamemi, Duygu Dityapak, Neslihan Semerci, Esra Keklik, Alper Akarsubasi, Mert Kumru, Halil Kurt
WATER SCIENCE AND TECHNOLOGY
(2018)
Article
Environmental Sciences
Muge Pacal, Neslihan Semerci, Baris Calli
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2019)
Article
Biotechnology & Applied Microbiology
Neslihan Semerci, Busra Kunt, Baris Calli
INTERNATIONAL BIODETERIORATION & BIODEGRADATION
(2019)
Article
Environmental Sciences
Neslihan Semerci, Saifurahman Ahadi, Sevil Cosgun
Summary: The study suggests that strong acidic conditions are more effective for phosphorus extraction during acid and alkaline leaching processes, and dried sludge is a more advantageous resource for phosphorus extraction.
WATER AND ENVIRONMENT JOURNAL
(2021)
Article
Engineering, Environmental
Anett Gulyas, Seval Genc, Zehra Semra Can, Neslihan Semerci
Summary: The study investigated phosphorus removal and recovery using magnetic nanoparticles (MNP) from synthetic solutions and sewage sludge supernatants. The experiments showed that MNP was highly effective for both ammonia and phosphate removal and recovery, with the removal efficiency varying depending on the conditions. Kinetic tests suggested that the adsorption process was controlled by a multi-step mechanism.
JOURNAL OF WATER PROCESS ENGINEERING
(2021)
Proceedings Paper
Engineering, Environmental
S. Cosgun, N. Semerci
FRONTIERS IN WASTEWATER TREATMENT AND MODELLING, FICWTM 2017
(2017)
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)