Functionalized biochar derived from heavy metal rich feedstock: Phosphate recovery and reusing the exhausted biochar as an enriched soil amendment

Mosa, Ahmed; El-Ghamry, A. M.; Tolba, Mona

doi:10.1016/j.chemosphere.2018.01.113

Cited by 94 publications

(36 citation statements)

References 44 publications

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“…The increase in plant chlorophyll content suggested that HS treated plants had higher nutrient absorption ability, particularly during early growth. Such bio‐stimulating effects were also confirmed by Mosa et al (), who found the biomass and nutrients in early growth maize seedlings were improved due to biochar‐derived HS application. Although similar promotive effects were measured for some variables in the greenhouse, plant above‐ground biomass was minimally affected by HS.…”

Section: Discussionsupporting

confidence: 69%

Lignite‐derived humic substances modulate pepper and soil‐biota growth under water deficit stress

Qin¹,

Leskovar²

2018

J. Plant Nutr. Soil Sci.

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Organic matter‐derived soil amendments containing humic substances (HS) have a functional role to improve plant growth and soil quality, but their response to water deficit stress is less reported, particularly in vegetable crops. This study assessed the impact of lignite‐derived HS on biota growth and evaluated their potential mitigative effects under water deficit stress in growth chamber and greenhouse environments. Bell pepper (Capsicum annuum L. cv. Revolution) plants were grown in sandy and clay soil previously mixed with lignite‐derived HS and subjected to four irrigation levels (20%, 40%, 60%, and 80%) based on soil water‐holding capacity. Plant growth traits, soil chemical properties, and microbial populations were measured and analyzed. HS increased plant root development and soil bacteria population in moderate and no stress conditions (60%, 80%). Physiologically, HS rapidly decreased leaf stomatal conductance and transpiration after imposing severe or mild stress (20%, 40%). The results indicate that HS transiently ameliorated plants exposed to water stress by reducing moisture loss. In addition, due to their capacity to improve plant root growth, soil nutrient cycling and microbial activity, application of HS might have long‐term benefits in agricultural systems.

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Section: Discussionsupporting

confidence: 69%

Lignite‐derived humic substances modulate pepper and soil‐biota growth under water deficit stress

Qin¹,

Leskovar²

2018

J. Plant Nutr. Soil Sci.

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“…During the first 90 min of adsorption, the amount of P adsorbed by the HFO/biochar increased markedly over time. The initial sorption rate was faster for the HFO/biochar than for the biochar, suggesting that physisorption played the most important role in phosphate recovery (Mosa et al, 2018 ). HFO nanoparticles are highly selective toward anionic contaminants such as phosphate (Pan et al, 2009 ; Zhang et al, 2018 ).…”

Section: Resultsmentioning

confidence: 99%

Recovery of Phosphorus From Swine Manure by Ultrasound/H2O2 Digestion, Struvite Crystallization, and Ferric Oxide Hydrate/Biochar Adsorption

et al. 2018

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Swine manure is potentially harmful to the environment but is also a readily accessible local source of phosphorus (P) for agricultural use. Decreasing the environmental impact of swine manure and recovering P from swine manure have been a challenge for a long time. In this study, an integrated process involving ultrasound/H2O2 digestion, struvite crystallization, and ferric oxide hydrate (HFO)/biochar adsorption was used to recover P from swine manure. The ultrasound/H2O2 treatment effectively solubilized the swine manure and converted organic P and other sparingly soluble P species into soluble phosphate. The struvite crystallization process allowed 85% of the available P to be recovered at pH 10.0 using a Mg:P molar ratio of 1.4 and a stirring rate of 150 rpm. HFO was loaded onto biochar synthesized by pyrolyzing ground corncob. The mechanism through which P was adsorbed was investigated by X-ray photoelectron spectroscopy and Fourier transform infrared spectroscopy. The adsorption of P by the HFO/biochar followed pseudo-second-order kinetics and was primarily controlled by chemical processes. The maximum amounts of P adsorbed were 225.08–242.21 mg/g. Thermodynamic calculations indicated that the adsorption of P was endothermic and spontaneous and increased the degree of disorder in the overall system. P mass balance calculations indicated that 90.4% of the total P was recovered as struvite and P-saturated HFO/biochar.

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“…Generally, except for some elements that are volatile at the pyrolysis temperature, trace elements concentrations in biochars are higher than in the original feedstock owing to volatilization of some compounds. Despite higher concentrations than the original feedstocks, biochar is able to immobilize significant amounts of trace elements in its matrix (Mosa, El-Ghamry, & Tolba, 2018).…”

Section: A B Cmentioning

confidence: 99%

Alleviation of aluminum and cadmium toxicity by biochar and its potential toxicity to sorghum

Almeida

Santos

Pandey

et al. 2020

SCA

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Highlights:Use of biochar to mitigate soils contaminated by trace elements. Pyrolysis as an alternative to sewage sludge disposal in the environment. Some mechanisms involved in the alleviation of soil acidity by biochar. A rapid and simple test to assess biochar toxicity. Biochar as a strong and effective sorbent for aluminum and cadmium. AbstractBiochar has been used as an alternative in organic wastes management and to alleviate trace elements toxicity. The aim of this research was to use a rapid and simple test to detect the potential toxic effects of biochar and its ability to alleviate aluminum and cadmium toxicity to seeds and seedlings of Sorghum bicolor L. Two experiments were carried out in Petri dishes with two different biochars where sorghum seeds were exposed to aluminum (experiment 1) and cadmium (experiment 2) solutions. The experimental designs were completely randomized, with five doses of aluminum or cadmium in aqueous solution (0, 0.5, 1, 2, and 4 mmol/L of Al or Cd), combined with or without the addition of 0.25 g of biochar from sugarcane bagasse or from sewage sludge. Compared to treatments without biochar, in the treatments with biochar, higher seed germination rate and growth of sorghum seedlings were obtained. Moreover, the biochars were not toxic to sorghum and they decreased the toxicity of aluminum and cadmium, mainly the biochar from sewage sludge that presented higher pH and greater occurrence of functional groups in its particles. ResumoO biochar tem sido utilizado como uma alternativa para o manejo de resíduos orgânicos e na remedição da toxidez por elementos traços. Objetivou-se com essa pesquisa usar um teste rápido e simples para detectar os potenciais efeitos tóxicos do biochar e sua capacidade de minimizar a toxidez por alumínio e cádmio para sementes e plântulas de Sorghum bicolor L. Conduziu-se dois experimentos em placas de Semina: Ciências Agrárias, Londrina, v. 41, n. 1, p. 95-108, jan./fev. 2020 Almeida, J. B. et al.Petri com dois diferentes biochars onde as sementes de sorgo foram expostas às soluções de alumínio (experimento 1) e cádmio (experimento 2). Os delineamentos experimentais foram inteiramente casualizados, com cinco doses de alumínio ou cádmio na solução aquosa (0, 0,5, 1, 2 e 4 mmol L-1 de Al ou Cd), combinados com ou sem a adição de 0,25g de biochar de bagaço de cana-de-açúcar (BB) ou de lodo de esgoto (BS). Nos tratamentos com biochar, obtém-se maior percentagem de germinação de sementes e crescimento de plântulas de sorgo em relação a ausência de biochar. Além disso, os biochars não são tóxicos para o sorgo e minimizam a toxicidade por alumínio e cádmio, principalmente o BS que apresenta maior pH e maior ocorrência de grupos funcionais em suas partículas. Palavras-chave: Sorghum bicolor. Elementos traços. Acidez do solo. Pirólise. Resíduos orgânicos.

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Functionalized biochar derived from heavy metal rich feedstock: Phosphate recovery and reusing the exhausted biochar as an enriched soil amendment

Cited by 94 publications

References 44 publications

Lignite‐derived humic substances modulate pepper and soil‐biota growth under water deficit stress

Lignite‐derived humic substances modulate pepper and soil‐biota growth under water deficit stress

Recovery of Phosphorus From Swine Manure by Ultrasound/H2O2 Digestion, Struvite Crystallization, and Ferric Oxide Hydrate/Biochar Adsorption

Alleviation of aluminum and cadmium toxicity by biochar and its potential toxicity to sorghum

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