Article
Environmental Sciences
Xian Chen, Jingcheng Liang, Lijing Bao, Xuanning Gu, Simin Zha, Xingming Chen
Summary: This study explores the interaction between triclosan (TCS) and its primary metabolite, methyl triclosan (MTCS), on different sorbents. Results show that MTCS has higher sorption capacity and affinity than TCS, with competitive sorption observed between them. The presence of TCS can facilitate the sorption of MTCS at high concentrations, while the effects of competitive and cooperative sorption between multiple contaminants vary with solution pH. These findings are important for evaluating the environmental risk of microplastics and TCS in soil.
ENVIRONMENTAL RESEARCH
(2022)
Article
Environmental Sciences
Daoming Wu, Weixin Peng, Li 'an Bao, Xiaoli Yu, Xiaoquan Dong, Mingli Lai, Zhiqi Liang, Shanyan Xie, Douglass F. Jacobs, Shucai Zeng
Summary: This study investigated the phytotoxicity alleviation by biochar in sewage sludge-amended soil. The results showed that biochar could reduce soil bulk density, improve water retention, and alter soil organic matter content and heavy metal fractionation. The alleviation of phytotoxicity was more dependent on plant adaptability than biochar feedstocks and usage.
ENVIRONMENTAL RESEARCH
(2022)
Article
Environmental Sciences
A. D. Samarajeewa, J. R. Velicogna, D. M. Schwertfeger, J. Princz, R. M. Subasinghe, R. P. Scroggins, L. A. Beaudette
Summary: The study indicates that the effects of copper oxide nanoparticles on soil microbial health and community structure vary depending on the concentration, whereas copper sulfate exhibits significant inhibitory effects on microbes at high concentrations.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Agronomy
Luciano Orden, Gaston A. Iocoli, Maria Angeles Bustamante, Raul Moral, Roberto A. Rodriguez
Summary: This study evaluated the effects of compost application on the release of nitrogen, phosphorus, and carbon in the soil. The results showed that compost led to a predominance of nitrification, especially in sandy loam soil. Compost also had high available phosphorus content, but with a slow release. After compost application, a significant period of nitrogen immobilization occurred, resulting in a relative deficit of nitrogen. Therefore, it is important to study nutrient release dynamics and fertilization potential in different soil and climate conditions to minimize potential environmental impacts.
Article
Soil Science
Hossein Bagheri, Hamid Zare Abyaneh, Azizallah Izady
Summary: This study investigated the effects of flow rate, initial soil moisture conditions, and vermicompost application on leaching of total dissolved solids, nitrate, dissolved organic carbon, and colloids from soil. Findings showed that VC-amended soil under dry conditions and at low flow rates had higher levels of EC, nitrate, and DOC in the effluent, while unsaturated flow rate of 2.5 mL/min efficiently leached more than higher flow rates in un-amended soil. The results provide insights for managing soil salinity, drainage, and groundwater pollution, suggesting that lower flow rates for irrigation can reduce colloid migration and soil erosion.
SOIL & TILLAGE RESEARCH
(2021)
Article
Engineering, Environmental
Ebrahem M. Eid, Kamal H. Shaltout, Saad A. M. Alamri, Sulaiman A. Alrumman, Ahmed A. Hussain, Nasser Sewelam, Ahmed F. El-Bebany, Ahmed H. Alfarhan, Yolanda Pico, Damia Barcelo
Summary: This study aimed to design prediction models to assess the uptake of eight heavy metals by tomato plants. The research found that most heavy metals had translocation factors below 1 within the plant, with bioconcentration factors mostly at 1. The models showed high accuracy in predicting heavy metal uptake, facilitating safe cultivation of tomato plants and providing human health risk assessments.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Agronomy
Elizabeth R. Rogers, Ronald S. Zalesny, Tracy Benzel, Adam H. Wiese
Summary: Hybrid poplars are increasingly used in agroforestry systems in the U.S. for biomass production, carbon allocation, and ecosystem services. Research shows that the NM2 clone grown in Expera soil amendments performed the best, producing the highest values for all parameters tested.
AGROFORESTRY SYSTEMS
(2021)
Article
Biotechnology & Applied Microbiology
Harmanpreet Sidhu, Hee-Sung Bae, Andrew Ogram, George O'Connor, Fahong Yu
Summary: This study found that biosolids contain transcriptionally active antibiotic resistance genes and mobile elements, which could survive and spread in biosolids-amended soil, highlighting the need for further research in real-world conditions.
APPLIED AND ENVIRONMENTAL MICROBIOLOGY
(2021)
Article
Biotechnology & Applied Microbiology
Elisa Marie D'Angelo
Summary: Class A biosolids, commonly used in various applications, contain active pathogens and antibiotic-resistant genes which pose potential health risks and agricultural concerns. The addition of biosolids to soil significantly increases the expression of virulence genes by pathogens and antibiotic-resistant genes, as well as the expression of virulence genes by native soil fungal pathogens of plant hosts, leading to higher risks of crop damage. This study provides a more comprehensive and accurate understanding of the potential risks associated with biosolids and biosolids-amended soils compared to previous cultivation and PCR-based techniques.
LETTERS IN APPLIED MICROBIOLOGY
(2023)
Article
Environmental Sciences
Ansley J. Levine, Eban Z. Bean, Francisca O. Hinz, P. Christopher Wilson, Alexander J. Reisinger
Summary: The use of organic amendments, such as composted biosolids, can improve residential landscapes and reduce the need for external inputs, while also potentially acting as a source of organic contaminants. In a soil column experiment, it was found that compost amendments are unlikely to be a major source of hormones and pharmaceuticals, but they may contribute to the leaching of per- and polyfluoroalkyl substances (PFAS), especially perfluorohexanoic acid (PFHxA). However, the concentrations of PFAS compounds in the leachate were lower than those in known PFAS hotspots. Therefore, when considering the use of composted biosolids as an organic amendment, the low leachate concentrations should be taken into account in risk-benefit analyses.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Engineering, Environmental
Gwynn R. Johnson
Summary: This study measured the levels of PFAS in soil and groundwater at an agricultural station with a history of biosolids application. It found that PFAS compounds have migrated to deeper soil depths and the immediate underlying groundwater. Additional and updated risk assessments and surveys are needed to protect public health and the environment.
Article
Engineering, Environmental
Jing Fu, Zhiyuan Gong, Sungwoo Bae
Summary: The study found that the presence of triclosan and methyl triclosan in water can have different toxic effects on zebrafish embryos, impacting mitochondrial inner membrane function and leading to dysregulation of various GO terms and KEGG pathways.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Environmental Sciences
Diana Lin, Coreen Hamilton, James Hobbs, Ezra Miller, Rebecca Sutton
Summary: While triclosan has been widely studied, little is known about its transformation product, methyl triclosan. In this study, a new method was developed to measure both compounds in fish tissue and used to assess their concentrations in prey fish in San Francisco Bay. The results showed that both triclosan and methyl triclosan levels in fish decreased with nitrate concentrations, suggesting wastewater influence. The total concentrations of these compounds were below toxic thresholds for triclosan, but more research is needed on the toxicity of methyl triclosan.
ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY
(2023)
Article
Environmental Sciences
Surindra Suthar, Naveen Chand, Vineet Singh
Summary: This study found that biochar addition and tidal flow operation played a significant role in the efficient removal of triclosan (TC) in constructed wetlands, as well as reducing its toxic impact on wetland plants.
Article
Forestry
Kevin Keys, David L. Burton, G. W. Price, Peter N. Duinker
Summary: The study compared the effects of different amendments on ion availabilities in forest soils over a 10-week period. ATB was effective in supplying Ca2+ but not Mg2+, while lime was most effective for Mg2+. Fly ash amended soils had the greatest availability of K+ and SO42--S.
CANADIAN JOURNAL OF FOREST RESEARCH
(2021)