www.uhasselt.be
DSpace

Document Server@UHasselt >
Research >
Research publications >

Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/18259

Title: Olive mill waste biochar: a promising soil amendment for metal immobilization in contaminated soils
Authors: Hmid, Amine
Al Chami, Ziad
SILLEN, Wouter
DE VOCHT, Alain
VANGRONSVELD, Jaco
Issue Date: 2015
Citation: ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH, 22 (2), p. 1444-1456
Abstract: The potential use of biochar from olive mill waste for in situ remediation of metal contaminated soils was evaluated. Biochar was mixed with metal contaminated soil originating from the vicinity of an old zinc smelter. Soil–biochar mixtures were equilibrated for 30 and 90 days. At these time points, Ca(NO3)2 exchangeable metals were determined, and effects of the biochar amendment on soil toxicity were investigated using plants, bacteria, and earthworms. Bean (Phaseolus vulgaris) growth, metal content, antioxidative enzymes activities, and soluble protein contents were determined. Furthermore, effects on soil microbial communities (activity, diversity, richness) were examined using Biolog ECOplates. After 120 days of soil–biochar equilibration, effects on weight and reproduction of Eisenia foetida were evaluated. With increasing biochar application rate and equilibration period, Ca(NO3)2 exchangeable metals decreased, and growth of bean plants improved; leaf metal contents reduced, the activities of antioxidative stress enzymes decreased, and soluble protein contents increased. Soil microbial activity, richness, and diversity were augmented. Earthworm mortality lowered, and their growth and reproduction showed increasing trends.
Notes: Hmid, A (reprint author), Univ Napoli Parthenope, Dipartimento Sci & Tecnol, Via Ammiraglio Ferdinando Acton 38, I-80133 Naples, Italy. amine.hmid@uniparthenope.it
URI: http://hdl.handle.net/1942/18259
DOI: 10.1007/s11356-014-3467-6
ISI #: 000348047400068
ISSN: 0944-1344
Category: A1
Type: Journal Contribution
Validation: ecoom, 2016
Appears in Collections: Research publications

Files in This Item:

Description SizeFormat
published version687.19 kBAdobe PDF

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.