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

Al-Wabel, Mohammad I.; Rafique, Muhammad Imran; Ahmad, Mahtab; Ahmad, Munir; Hussain, Abid; Usman, Adel R.A.

doi:10.1016/j.sjbs.2018.05.017

Cited by 34 publications

(20 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The shoot length was significantly reduced by the addition of biochar produced from peanut hull at 500 • C [38]. Contrarily, it was reported that biochar derived from date palm leaflets promoted the shoot length of lettuce [61]. However, the germination test in the previous study was carried out on filter papers, which could lead to the different outcomes compared to the germination test on biochar-sand mixtures in our study.…”

Section: Effects Of Corncob Biochar On Shoot Fresh Weightcontrasting

confidence: 55%

“…Based on the results of this study, corncob biochar could be used at a low application rate (10 t/ha) without a significant phytotoxic effect on seed germination. In a previous study, it was reported that biochar from date palm leaflets did not result in toxic effect on lettuce germination [61]. It was reported that the addition of biochar at low application rates (10-50 t/ha) increased germination of wheat [60].…”

Section: Effects Of Corncob Biochar On Shoot Lengthmentioning

confidence: 94%

See 1 more Smart Citation

Phytotoxicity of Corncob Biochar before and after Heat Treatment and Washing

et al. 2018

View full text Add to dashboard Cite

Biochar from crop residues such as corncobs can be used for soil amendment, but its negative effects have also been reported. This study aims to evaluate the phytotoxic effects of different biochar treatments and application rates on cress (Lepidium sativum). Corncob biochar was produced via slow pyrolysis without using purging gas. Biochar treatments included fresh biochar (FB), dried biochar (DB), washed biochar (WB), and biochar water extract (WE). Biochar application rates of 10, 20, and 30 t/ha were investigated. Significant phytotoxic effects of biochar were observed on germination rates, shoot length, fresh weight, and dry matter content, while severe toxic effects were identified in FB and WE treatments. Germination rate after 48 h (GR48) decreased with the increase of biochar application rates in all treatments. The observed order of performance of the biochar treatments for germination, shoot length, and shoot fresh weight for every biochar application rate was WB>DB>WE>FB, while it was the reverse order for the shoot dry matter content. WB treatment showed the best performance in reducing the phytotoxicity of biochar. The mitigation of the phytotoxicity in fresh corncob biochar by washing and heat treatment was found to be a simple and effective method.

show abstract

Section: Effects Of Corncob Biochar On Shoot Fresh Weightcontrasting

confidence: 55%

Section: Effects Of Corncob Biochar On Shoot Lengthmentioning

confidence: 94%

Phytotoxicity of Corncob Biochar before and after Heat Treatment and Washing

et al. 2018

View full text Add to dashboard Cite

show abstract

“…Typically, the presence of glucose in lignocellulosic biomass inhibits nitrogen transfer to the bio-crude oil and aqueous phases (Qiu et al, 2019). Char with high nitrogen content used as an organic fertilizer can increase the amount of available nitrogen and phosphorous, increase crop yields, and reduce greenhouse gas emissions (Al-Wabel et al, 2018;Islam et al, 2021). Adjuik et al (2020) showed that CO 2 fluxes were 34% lower in HTL-char treated soils than in the control treatment.…”

Section: Carbon and Nitrogen Recovery Within Htl Productsmentioning

confidence: 99%

Hydrothermal Liquefaction of Food Waste: Effect of Process Parameters on Product Yields and Chemistry

Bayat

Dehghanizadeh

Jarvis

et al. 2021

Front. Sustain. Food Syst.

View full text Add to dashboard Cite

Increasing food waste generation (1.6 billion tons per year globally) due to urban and industrial development has prompted researchers to pursue alternative waste management methods. Energy valorization of food waste is a method that can reduce the environmental impacts of landfills and the global reliance on crude oil for liquid fuels. In this study, food waste was converted to bio-crude oil via hydrothermal liquefaction (HTL) in a batch reactor at moderate temperatures (240–295°C), reaction times (0–60 min), and 15 wt.% solids loading. The maximum HTL bio-crude oil yield (27.5 wt.%), and energy recovery (49%) were obtained at 240°C and 30 min, while the highest bio-crude oil energy content (40.2 MJ/kg) was observed at 295°C. The properties of the bio-crude oil were determined using thermogravimetric analysis, fatty acid methyl ester (FAME) analysis by gas chromatography with flame ionization detection, CHNS elemental analysis, and ultrahigh-resolution Fourier transform ion cyclotron resonance mass spectroscopy (FT-ICR MS). FT-ICR MS results indicated that the majority of the detected compounds in the bio-crude oil were oxygen-containing species. The O4 class was the most abundant class of heteroatom-containing compounds in all HTL bio-crude oil samples produced at 240°C; the O2 class was the most abundant class obtained at 265 and 295°C. The total FAME content of the bio-crude oil was 15–37 wt.%, of which the most abundant were palmitic acid (C16:0), palmitoleic acid (C16:1), stearic acid (C18:0), and polyunsaturated fatty acids (C18:3N:3, C18:3N:6).

show abstract

“…These organic pollutants in P-BC-LDHs may be considered one of the factors inhibiting the growth of lettuce seedlings. It was reported that PAH-induced responses in several plants included the reduction of seed germination, hindered seedling development, and decreased root elongation due to the variable consequences of interference with cell wall modification and expansion, membrane permeability, and photosynthesis [36][37][38][39]. Therefore, to avoid any potentially toxic effects, the quantitative analyses of metal elements and PAHs, as well as pretreatment of P-BC-LDHs, should be performed prior to application for seed germination.…”

Section: Seed Germinationmentioning

confidence: 99%

Application of Biochar Functionalized with Layered Double Hydroxides: Improved Plant Growth Performance after Use as Phosphate Adsorbent

Buates

Imai

2021

Applied Sciences

View full text Add to dashboard Cite

The objective of this study was to verify the feasibility of using biochar, functionalized with layered double hydroxides, as a fertilizer after its use in phosphate treatment (P-BC-LDHs). It was conducted with several levels of P-BC-LDHs using seed germination and early growth assays of lettuce (Lactuca sativa L.). The application of P-BC-LDHs resulted in successful seedling emergence, with an excellent germination capacity of over 96% for all treatments. However, compared to the controls, P-BC-LDHs did not provide favorable seedling traits. In contrast, in the latter experiments, lettuce cultivated under mixtures with P-BC-LDHs, particularly at an application rate of 2.5% (w/w), displayed superior growth quality to those under non-treated conditions. The length of lettuce shoots and roots from this optimal dosage were increased by at least 24% compared to untreated samples. A 17% reduction in biomass yield was observed for the samples from non-supplemented substrates. The nutrient release profiles showed that P-BC-LDHs were capable of slowly supplying phosphorus, thereby increasing the long-term nutrient availability for plants. The findings reported here provide important insights into these materials and confirm that P-BC-LDHs can be used for agricultural purposes after phosphate remediation applications. The results of this study provide constructive information to facilitate the implementation of biochar-based LDH composites for sustainable phosphate removal and recovery.

show abstract

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

Abstract: Graphical abstract

Cited by 34 publications

References 39 publications

Phytotoxicity of Corncob Biochar before and after Heat Treatment and Washing

Phytotoxicity of Corncob Biochar before and after Heat Treatment and Washing

Hydrothermal Liquefaction of Food Waste: Effect of Process Parameters on Product Yields and Chemistry

Application of Biochar Functionalized with Layered Double Hydroxides: Improved Plant Growth Performance after Use as Phosphate Adsorbent

Contact Info

Product

Resources

About