Article
Engineering, Environmental
Dongbo Wang, Lingjuan Tao, Jingnan Yang, Zhengyong Xu, Qi Yang, Yi Zhang, Xuran Liu, Qiang Liu, Jin Huang
Summary: The study showed that denitrifying sludge can effectively remove TCC through adsorption in stable operation. However, long-term exposure to TCC deteriorates the performance of denitrifying biomass and decreases denitrification efficiency.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Environmental Sciences
Joanna Boguniewicz-Zablocka, Iwona Klosok-Bazan, Andrea G. Capodaglio
Summary: The sustainable management of biosolids from wastewater treatment is crucial, especially with the ban of some disposal options in many European countries. Solar drying technology offers a cost-efficient and energy-saving alternative to traditional thermal drying methods, with successful applications in countries like Germany and Poland. Research is being done on improving the efficiency of solar drying for sewage sludge, in line with the new National Waste Management Plan of Poland.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Ecology
Allan Rocha de Freitas, Nathalia Aparecida Braganca Favaris, Rodrigo Sobreira Alexandre, Tatiana da Silva Souza, Iasmini Nicoli Galter, Julcinara Oliveira Baptista, Paula Aparecida Muniz de Lima, Tamyris de Mello, Wagner Campos Otoni, Jose Carlos Lopes
Summary: The aim of this study was to investigate the effect of sewage sludge (SS) dosage on the cell cycle and growth of Lactuca sativa and Passiflora alata. The results showed that SS concentrations above 120 t ha(-1) adversely affected the germination and early growth of L. sativa and P. alata, with high concentrations inducing genetic damage and chromosomal and nuclear changes in L. sativa.
Article
Environmental Sciences
Ioannis Giannakis, Christina Emmanouil, Manassis Mitrakas, Vasiliki Manakou, Athanasios Kungolos
Summary: The study conducted multiple leaching tests and analyses to determine that sludge-based biosolids pose low environmental risk when utilized in the field.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Engineering, Environmental
Jialin Liang, Lei Zhang, Chengjian Li, Zhihua Mo, Maoyou Ye, Zhi Zhu, Shuiyu Sun, Jonathan W. C. Wong
Summary: A combination approach of chalcopyrite and sodium percarbonate was established to enhance TCC removal efficiency and sludge dewatering. The results showed that this approach was more cost-effective and environmentally friendly compared to iron-based advanced oxidation processes. Mechanistic findings demonstrated that center dot OH oxidation played a significant role in TCC removal, resulting in the successful removal of TCC from the sludge and the identification of five transformation products.
JOURNAL OF HAZARDOUS MATERIALS
(2024)
Article
Infectious Diseases
Alessia Catalano, Antonio Rosato, Lara Salvagno, Domenico Iacopetta, Jessica Ceramella, Giuseppe Fracchiolla, Maria Stefania Sinicropi, Carlo Franchini
Summary: Triclocarban is a widely used antimicrobial agent with potential environmental impact. Researchers have been studying the synthesis and biological activity of new compounds to replace TCC, and some analogues have shown higher antimicrobial activity against bacteria such as Staphylococcus aureus and Enterococcus faecalis. Compound 2bG also exhibited interesting bactericidal action despite being less active than others.
Article
Multidisciplinary Sciences
Hang Lv, Qiao Xiong, Daoguang Liu, Xu Wu
Summary: This study investigated the effects of electro-dewatering on subsequent low-temperature drying at various potentials and the characteristics of low-temperature air-drying sludge were explored through experiments and multi-physical modeling. Results showed that electro-dewatering reduced EPS content and changed the organic matter species, leading to a cake structure conducive to low-temperature drying. The applied higher electric field intensity in electro-dewatering stage promoted water vapor diffusion activity in air-drying stage, resulting in lower energy consumption and higher yield compared to directly low-temperature drying.
SCIENTIFIC REPORTS
(2021)
Review
Multidisciplinary Sciences
Tess Richman, Elyssa Arnold, Antony J. Williams
Summary: Section 405(d) of the Clean Water Act mandates the US Environmental Protection Agency to review sewage sludge regulations and identify pollutants in biosolids that may pose risks to human health or the environment. Through biennial reviews and national surveys, the EPA has compiled a list of 726 chemicals found in biosolids and reported concentration data for 484 chemicals. This Biosolids List aids the EPA in assessing the potential risk of chemical pollutants in biosolids.
Article
Engineering, Environmental
Sha Long, Qizi Fu, Zhixiang Hao, Luyang Sun, Zihan Li, Yike Guo, Xuran Liu, Fengming Song, Dongbo Wang, Wenming Wang
Summary: This study investigates the transformation of triclocarban (TCC) in microbial electrolysis cell assisted anaerobic digestion (MEC-AD) reactors, and fills the knowledge gap about whether and how MEC-AD enhances the degradation of refractory pollutants in sludge. The results show that over 83.3% of TCC was dechlorinated in MEC-AD reactors, while the mass loss in the control AD reactor was only 0.53%. The presence of electrodes promoted TCC dechlorination in MEC-AD reactors, and applied voltages promoted hydrogenotrophic methanogenesis.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Multidisciplinary Sciences
Aude Ratier, Sandrine Charles
Summary: This article discusses the regulatory requirement for bioaccumulation evaluation of chemicals within organisms and the use of toxicokinetic (TK) data to predict internal concentrations. To increase the availability of TK data, researchers have developed an innovative database to support TK modelling.
Article
Engineering, Environmental
Dandan Li, Jake W. O'Brien, Benjamin J. Tscharke, Elvis D. Okoffo, Jochen F. Mueller, Hongwen Sun, Kevin V. Thomas
Summary: This study assessed the release of artificial sweeteners from biosolids in Australia, finding that the concentration of artificial sweeteners varied with the moisture content in biosolids. Approximately 223 kg of artificial sweeteners are released to the terrestrial environment in Australia annually via biosolids, with risks associated likely limited due to low loads compared to wastewater effluent.
Article
Environmental Sciences
Weijun Zhang, Tianyi Dong, Jing Ai, Qinglong Fu, Nan Zhang, Hang He, Qilin Wang, Dongsheng Wang
Summary: Chlorination disinfection can generate harmful DBPs in wastewater sludge, but controlling the pH before and after chlorination can reduce the generation of DBPs and ensure the safety of subsequent disposal of sludge.
ENVIRONMENT INTERNATIONAL
(2022)
Review
Environmental Sciences
Sahar Gholipour, Mohammad Rezvani Ghalhari, Mahnaz Nikaeen, Davarkhah Rabbani, Parichehr Pakzad, Mohammad Bagher Miranzadeh
Summary: Enteric viruses are of great concern in wastewater due to their low removal in treatment processes and potential risks to human health. The presence and concentration of viruses in sewage sludge vary depending on the treatment method, and land application of sludge may pose viral infection risks and contaminate water sources.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Engineering, Environmental
Hao Wang, Hanlin Cui, Xiaodan Ma, Carolyn R. Cornell, Liying Zhang, Yijun Ren, Minghan Li, Ying Liu, Shu-Hong Gao, Zhiling Li, Ai-Jie Wang, Jizhong Zhou, Bin Liang
Summary: The widespread use of the antimicrobial substance triclocarban (TCC) has raised concerns about its impacts on wastewater treatment systems, the environment, and human health. This study investigated the adsorption of TCC by sludge and extracellular polymeric substances (EPS) in a multistage biological process. The results showed that EPS had a higher adsorption capacity for TCC than sludge, potentially due to its loose multilayer structure and abundant functional groups. TCC also had adverse effects on the biological removal of ammonia nitrogen. Our study provides molecular-level insights into the interaction between TCC and activated sludge, and evaluates the risks associated with its presence in wastewater treatment systems through computational modeling.
CHEMICAL ENGINEERING JOURNAL
(2023)
Review
Environmental Sciences
Harmita Golwala, Xueyao Zhang, Syeed Md Iskander, Adam L. Smith
Summary: Microplastics pollution is a pressing environmental issue, with solid waste being the main source of microplastics entering aquatic environments. Waste sources related to microplastics include landfill refuse, sludge, and food waste.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)