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The fate and mobility of chromium, arsenic and zinc in municipal sewage sludge during the co-pyrolysis process with organic and inorganic chlorides.
Sci Rep
January 2025
Institute of Science and High Technology and Environmental Sciences, Graduate University of Advanced Technology, Kerman, Iran.
Co-pyrolysis is an efficient approach for municipal sewage sludge (SS) treatment, facilitating the production of biochar and promoting the stabilization and removal of heavy metals, particularly when combined with chlorinated materials. This study explores the impact of pyrolysis temperatures (400 °C and 600 °C) and chlorinated additives (polyvinyl chloride (PVC) as an organic chloride source and ferric chloride (FeCl) as an inorganic chloride source) at 10% and 20% concentrations, on the yield, chemical speciation, leachability, and ecological risks of arsenic (As), chromium (Cr), and zinc (Zn) in biochar derived from SS. The results revealed that increasing the pyrolysis temperature from 400 to 600 °C significantly reduced biochar yield due to enhanced volatilization of organic components, as well as the removal of heavy metals in interaction with chlorinated materials.
View Article and Find Full Text PDFMetagenomic deciphers the mobility and bacterial hosts of antibiotic resistance genes under antibiotics and heavy metals co-selection pressures in constructed wetlands.
Environ Res
January 2025
Chinese Academy of Sciences Key Laboratory of Aquatic Botany and Watershed Ecology, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, China; Hubei Key Laboratory of Wetland Evolution & Ecological Restoration, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan, China. Electronic address:
Both antibiotics and heavy metals exert significant selection pressures on antibiotic-resistance genes (ARGs). This study aimed to investigate the co-selection effects of doxycycline (DC) and cadmium (Cd) on ARGs in constructed wetlands (CWs). The results demonstrated that under antibiotic and heavy metal co-selection pressures, single high concentration DC/Cd or double high, relative abundances of metagenomics assembled genomes all reached 55.
View Article and Find Full Text PDFLength of hospital stay in adolescents receiving high-dose oral contraceptive pills with and without conjugated equine estrogen for the treatment of acute abnormal uterine bleeding.
J Pediatr Adolesc Gynecol
January 2025
Division of Adolescent and Young Adult Medicine, Children's Hospital Los Angeles, Keck School of Medicine of University of Southern California, 3250 Wilshire Blvd, Suite 300, Los Angeles, CA 90010.
Study Objective: Compare the length of hospital stay of adolescents admitted for severe anemia (hemoglobin ≤ 8 g/dL) due to acute abnormal uterine bleeding (AUB) treated with high-dose combined oral contraceptive pills (HD-OCPs) versus those treated with HD-OCPs and intravenous conjugated equine estrogen, also referred to as dual therapy.
Design, Setting, And Participants: This is a single institution retrospective cohort study of adolescents hospitalized for the management of acute AUB and severe anemia between July 1, 2004, to January 1, 2020. Subjects were excluded if they were pregnant, had a malignancy, thrombocytopenia, treated with other hormonal therapies, or if bleeding stopped prior to admission.
Microbe-assisted phytoremediation for sustainable management of heavy metal in wastewater - A green approach to escalate the remediation of heavy metals.
J Environ Manage
January 2025
Department of Environmental Science and Engineering, School of Engineering and Sciences, SRM University-AP, Amaravati, 522503, Andhra Pradesh, India. Electronic address:
Water pollution from Heavy metal (HM) contamination poses a critical threat to environmental sustainability and public health. Industrial activities have increased the presence of HMs in wastewater, necessitating effective remediation strategies. Conventional methods like chemical precipitation, ion exchange, adsorption, and membrane filtration are widely used but possess various limitations.
View Article and Find Full Text PDFDetection of heavy metals in soil using Au@SiO nanoparticles and surface microstructure combined with laser-induced breakdown spectroscopy.
J Hazard Mater
January 2025
College of Engineering and Technology, Southwest University, Chongqing 400716, PR China. Electronic address:
The detection of heavy metals in soil is of great scientific significance for food security and human health. However, traditional detection methods are complicated, time-consuming, and labor-intensive. Herein, we developed a novel method using Au@SiO nanoparticles (NPs) and surface microstructure combined with laser-induced breakdown spectroscopy (Au@SiO NPs-SMS-LIBS) for the rapid detection of lead (Pb), chromium (Cr), and copper (Cu) in soil samples.
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