Pyrolytic and hydrothermal carbonization of date palm leaflets: Characteristics and ecotoxicological effects on seed germination of lettuce

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ID: 82058
2019
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Abstract
Biochar has vital importance as soil additives due to its characteristics, which are responsible for alleviating environmental problems and climate change. These additives should be evaluated to understand their physico-chemical properties and their ecotoxicological effects on plant growth. Therefore, this study aimed to (i) distinguish the properties of biochar produced from date palm and its derivative hydrochar, and (ii) investigate their ecotoxicological effects. Specifically, the biochar and hydrochar were produced from date palm leaflets by pyrolysis and hydrothermal carbonization, respectively. The produced chars were evaluated for their characteristics before and after water washing, and for their ecotoxicological effects on seed germination of lettuce (Lactuca sativa L). The results show that water washing lowered biochar’s pH and increased hydrochar’s pH. Moreover, water washing of hydrochar caused a significant reduction in the total content of essential elements such as Ca, Mg, Mn, and Zn. Lettuce germination was significantly inhibited to 20% by hydrochar, whereas biochar enhanced lettuce growth by increasing shoot length (by 51%) and dry biomass (by 114%). Hydrochar toxicity was correlated (R > 0.95 at p = 0.05) with high contents of total polyaromatic hydrocarbons (98.8 mg kg−1). Pre-treatment and assessment of hydrochar should be taken into account prior to application as a soil amendment. Keywords: Biochar, Hydrochar thermal treatment, Polyaromatic hydrocarbons, Ecotoxicity
Reference Key
alwabel2019pyrolyticsaudi Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Al-Wabel, Mohammad I.;Rafique, Muhammad Imran;Ahmad, Mahtab;Ahmad, Munir;Hussain, Abid;Usman, Adel R.A.;
Journal saudi journal of biological sciences
Year 2019
DOI
DOI not found
URL
http://www.sciencedirect.com/science/article/pii/S1319562X18301281
Keywords
Biology (General) Medicine Technology (General) Engineering (General). Civil engineering (General) Information technology Technology Electrical engineering. Electronics. Nuclear engineering Science environmental effects of industries and plants renewable energy sources environmental sciences oils, fats, and waxes applied optics. photonics meteorology. climatology

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