Category Ranking
98%
Total Visits
921
Avg Visit Duration
2 minutes
Citations
20
Article Abstract
In the present study composting of water hyacinth was done with cattle manure and saw dust (6:3:1) ratio and effects of addition of lime (1%, 2% and 3%) on heavy metal bioavailability and leachability was evaluated during 30 days of composting period. The changes in temperature, pH, electrical conductivity (EC), organic matter and extractable heavy metal contents were measured. Results showed that the total concentration of heavy metals was increased during the composting process. Due to addition of lime initial pH of the compost was raised effectively, caused a decrease in water soluble, diethylene triamine pentracetic acid (DTPA) and toxicity characteristics leaching procedure (TCLP) extractable metal contents in the final compost. Water soluble metals (Ni, Pb and Cd) and DTPA extractable metals (Pb and Cd) were not detected during water soluble fraction. Addition of lime significantly reduced the bioavailability and leachability of heavy metals during water hyacinth composting process.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.biortech.2013.03.151 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Estimation of intravenous TTC (TTCiv) for Extractables and Leachables (E&Ls) by applying a modifying factor based on blood concentration predicted using an open-source PBPK model.
J Toxicol Sci
August 2025
Chemicals Assessment and Research Center, Chemicals Evaluation and Research, Institute, Japan (CERI).
Pharmaceutical manufacturing and storage processes pose the potential risk of chemicals migrating from the packaging materials into pharmaceuticals. These migrants, known as extractables and leachables (E&Ls), consist of various chemicals that may pose a risk to patients during therapeutic use. Although exposure to E&Ls via the intravenous route is of greater concern, there is almost no toxicity information for these chemicals to determine the Permitted Daily Exposure (PDE).
View Article and Find Full Text PDFThe risk assessment for metal(loid)s in soil-slag mixing systems: Coupling sequential extraction, leaching tests, and in vitro bioaccessibility assays.
J Hazard Mater
September 2025
College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 101408, China. Electronic address:
The metals and metalloids (metal[loid]s) in the newly formed soil-slag mixing systems (SSMS), formed by the invasion of smelting slag into contaminated soils, may pose potential risks to environment and residents near the smelter sites. In this study, sequential extraction, leaching tests and in vitro bioaccessibility assays were conducted to assess the ecological and human health risk of metal(loid)s in SSMS. The results indicated that the contaminated soils and smelting slags were composed of more than 80 % silicate and oxide minerals, which served as the host phases for metal(loid)s in SSMS.
View Article and Find Full Text PDFCharacterization and pollution risk assessment of landfill-mined fine fraction: a case study from Guwahati, India.
Environ Monit Assess
June 2025
Department of Civil Engineering, Indian Institute of Technology Guwahati, Assam, 781039, Guwahati, India.
Landfill mining addresses the issue of legacy waste while recovering secondary resources. The soil-like material or landfill-mined fine fraction (hereafter LMFF) is one of the principal residues of landfill mining and makes up approximately 45-80% of the total landfill-mined residues. Because of the unique waste composition and the improper practices of dumping mixed MSW, it is crucial to undertake characterization studies on LMFF worldwide.
View Article and Find Full Text PDF[Review on the Safety of Heavy Metals During Land Utilization of Municipal Sludge after Composting].
Huan Jing Ke Xue
June 2025
College of Life and Environmental Sciences, Minzu University of China, Beijing 100081, China.
The leaching and release of heavy metals in municipal sludge pose critical constraints on the land utilization of municipal sludge after composting. To comprehensively understand the safety of heavy metals during land utilization of municipal sludge after composting， in this work， the heavy metal content levels of typical municipal sludge in China were summarized； the changes in the total amount， valence， and speciation forms of different types of heavy metals before and after composting were analyzed； and the short-term and long-term environmental behavior patterns of heavy metals after the application of municipal sludge composting products were reviewed. The mean concentrations of As， Cd， Cr， Cu， Hg， Ni， Pb， and Zn in municipal sludge in China were 21.
View Article and Find Full Text PDFMetals leachability from mine drainage passive treatment systems vertical flow bioreactor substrates.
J Environ Manage
August 2025
University of Oklahoma, Center for Restoration of Ecosystems and Watersheds, 202 W. Boyd Street, Norman, OK, 73019, USA.
Vertical flow bioreactors (VFBRs) are an important form of biological passive treatment of mine drainage. The organic substrate in VFBRs provides an anaerobic environment for sulfate reducing bacteria which facilitate the precipitation of metal sulfides from mine impacted waters, effectively removing ecotoxic trace metals from the effluent of the treatment units. However, these treatment units can become clogged and require rehabilitative maintenance (e.
View Article and Find Full Text PDF