Biomaterial Database

Biosorption of heavy metals from landfill leachate onto activated sludge. 2001

F Ceçen, and G Gürsoy

Boğaziçi University, Institute of Environmental Sciences, 80815, Bebek, Istanbul, Turkey. cecenf@boun.edu.tr

The removal of various heavy metals was studied when activated sludge was exposed to heavy metals in landfill leachate. Batch uptake tests were conducted for this purpose. Adsorption was the main mechanism of removal when biomass was contacted with heavy metals. Activated sludge had a high biosorption capacity and equilibrium was reached in a short time with respect to copper, iron, manganese, zinc and chromium. Adsorption isotherms were generated for those heavy metals and the Freundlich constants were calculated. Among the metals studied, manganese became very concentrated on activated sludge with time.

UI	MeSH Term	Description	Entries
D007700	Kinetics	The rate dynamics in chemical or physical systems.
D012037	Refuse Disposal	The discarding or destroying of garbage, sewage, or other waste matter or its transformation into something useful or innocuous.	Waste Disposal, Solid,Disposal, Refuse,Disposal, Solid Waste,Disposals, Refuse,Disposals, Solid Waste,Refuse Disposals,Solid Waste Disposal,Solid Waste Disposals,Waste Disposals, Solid
D004787	Environmental Pollution	Contamination of the air, bodies of water, or land with substances that are harmful to human health and the environment.	Pollution, Environmental,Soil Pollution,Pollution, Soil
D000042	Absorption	The physical or physiological processes by which substances, tissue, cells, etc. take up or take in other substances or energy.
D012722	Sewage	Refuse liquid or waste matter carried off by sewers.	Sludge,Sludge Flocs
D012989	Soil Pollutants	Substances which pollute the soil. Use for soil pollutants in general or for which there is no specific heading.	Soil Pollutant,Pollutant, Soil,Pollutants, Soil
D013696	Temperature	The property of objects that determines the direction of heat flow when they are placed in direct thermal contact. The temperature is the energy of microscopic motions (vibrational and translational) of the particles of atoms.	Temperatures
D019216	Metals, Heavy	Metals with high specific gravity, typically larger than 5. They have complex spectra, form colored salts and double salts, have a low electrode potential, are mainly amphoteric, yield weak bases and weak acids, and are oxidizing or reducing agents (From Grant & Hackh's Chemical Dictionary, 5th ed)	Heavy Metal,Heavy Metals,Metal, Heavy