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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 | Source: | 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 | Keywords: | Biochar; heavy metals; phaseolus vulgaris; biolog ECOplates; eisenia foetida | Document URI: | http://hdl.handle.net/1942/18259 | ISSN: | 0944-1344 | e-ISSN: | 1614-7499 | DOI: | 10.1007/s11356-014-3467-6 | ISI #: | 000348047400068 | Rights: | © Springer-Verlag Berlin Heidelberg 2014. | Category: | A1 | Type: | Journal Contribution | Validations: | ecoom 2016 |
Appears in Collections: | Research publications |
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