Feedstock type, pyrolysis temperature and acid modification effects on physiochemical attributes of biochar and soil quality

Murtaza, Ghulam; Ahmed, Zeeshan; Usman, Muhammad

doi:10.1007/s12517-022-09539-9

Cited by 29 publications

(20 citation statements)

References 303 publications

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“…The virgin sources include forest sources and oilseed/cereal crops. The residues are timber residues, agricultural residues, and wastes of livestock residues [18]. The wood, wood pellets, tea trash, coffee hulls, biodegradable sewage sludge, wheat straw, rice straw, macro and microalgae, maize fodder are unquestionable fantastic potentials as pyrolysis feedstocks so far.…”

Section: Preparation Of Biocharmentioning

confidence: 99%

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Aged Biochar for the Remediation of Heavy Metal Contaminated Soil: Analysis through an Experimental Case the Physicochemical Property Changes of Field Aging Biochar and Its Effects on the Immobilization Mechanism for Heavy Metal

Zhang¹,

Shi²,

Li³

et al. 2023

Biochar - Productive Technologies, Properties and Applications

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Heavy metal inducing contamination soil has become a serious concern. Contaminated soil can cause physiochemical and biochemical changes into soil and the plants. Thus, the plant growth and the yield were affected. In additionally, that ultimately leads to the problem of food security and human health. In recent years, many kinds of ways were used for the remediation of heavy metal contaminated soil, such as isolation, phytoremediation, immobilization, extraction, and soil washing. As a new carbon-rich material, biochar has been applied to the remediation of heavy metal pollution in soil. As biochar is rich with porous structure, high cation exchange capacity, pH value, and surface function, it has become an adsorbent for soil heavy metal remediation. While, with time, the capacity of biochar to immobilize the heavy metals may be modified as the sorption sites may get occupied with native soil organic matter or competing contaminant, etc. And that the physicochemical properties of biochar changed significantly during field aging. Thus, to clarify the mechanism of field-aged biochar for the remediation of heavy metal contaminated soil, we analysis, through an experimental case, the physicochemical property changes of field-aged biochar and its effects on the immobilization mechanism for heavy metal.

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Section: Preparation Of Biocharmentioning

confidence: 99%

“…And the temperature of the feedstock at its center is higher than the temperature of the components. This system accelerates chemical reactions and shortens their duration, saving energy surface and time [18]. This approach is among the foremost promising strategies of fast and improving chemical reactions.…”

Section: Preparation Of Biocharmentioning

confidence: 99%

Aged Biochar for the Remediation of Heavy Metal Contaminated Soil: Analysis through an Experimental Case the Physicochemical Property Changes of Field Aging Biochar and Its Effects on the Immobilization Mechanism for Heavy Metal

Zhang¹,

Shi²,

Li³

et al. 2023

Biochar - Productive Technologies, Properties and Applications

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show abstract

“…BC production process had three phases: pre-pyrolysis, post-pyrolysis, and the creation of carbonous products (Murtaza et al, 2022). The first phase (200 °C) is accredited to the evaporation of light volatiles and moisture.…”

Section: Pyrolysis Temperaturementioning

confidence: 99%

A review of mechanism and adsorption capacities of biochar-based engineered composites for removing aquatic pollutants from contaminated water

Murtaza

Ahmed

Dai

et al. 2022

Front. Environ. Sci.

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Water contamination by aquatic pollutants (antibiotics, heavy metals, nutrients, and organic pollutants) has become the most serious issue of recent times due to associated human health risks. Biochar (BC) has been deemed an effective and promising green material for the remediation of a wide range of environmental pollutants. Due to its limited properties (small pore size and low surface functionality), pristine BC has encountered bottlenecks in decontamination applications. These limitations can be rectified by modifying the pristine BC into engineered BC via multiple modification methods (physical, chemical, and mechanical), thus improving its decontamination functionalities. Recently, these engineered BCs/BC-based composites or BC composites have gathered pronounced attention for water decontamination due to fewer chemical requirements, high energy efficiency, and pollutant removal capacity. BC-based composites are synthesized by mixing BC with various modifiers, including carbonaceous material, clay minerals, metals, and metal oxides. They considerably modify the physiochemical attributes of BC and increase its adsorption ability against various types of aquatic pollutants. BC-based composites are efficient in eliminating target pollutants. The efficiency and type of a specific mechanism depend on various factors, mainly on the physicochemical characteristics and composition of the BC-based composites and the target pollutants. Among the different engineered BCs, the efficiency of clay-BC composites in removing the antibiotics, dyes, metals, and nutrients was good. This review could help develop a comprehensive understanding of using engineered BCs as effective materials for the remediation of contaminated water. Finally, gaps and challenges in research are identified, and future research needs are proposed.

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“…Organic solid wastes often contain a large number of inorganic minerals, and the precipitation of soluble alkali metal salts and mineral components in the pyrolysis process leads to the increase of organic solid waste biochar ash and pH value (Xu et al, 2022). Biochar derived from organic solid waste showed more CEC and oxygenated surface functional groups than biochar derived from plants, possibly because the alkali metals in the raw material promoted the generation of oxygenated surface functional groups (Murtaza et al, 2022). Compared with biochar from non-woody materials, wood biochar has lower ash content but higher C content, aromaticity and stability because carbon compounds such as lignin, which are rich in the raw material, are not easily degraded during pyrolysis (Xu et al, 2022).…”

Section: Feedstock Typementioning

confidence: 99%

“…The increase in ash content at high pyrolysis temperature is due to the combustion of organic matter and the residue of inorganic components (Tomczyk et al, 2020). The increase in pH with increasing temperature is mainly due to more alkali metal salt in ash produced during pyrolysis, and additional support is provided by the appearance of basic functional groups, the disappearance of acidic functional groups and the release of alkali metal salts from the raw material (Murtaza et al, 2022). Due to the dehydration and deoxygenation of biomass raw materials, the content of oxygen-containing functional groups is low (Tomczyk et al, 2020).…”

Section: Pyrolysis Conditionsmentioning

confidence: 99%

Biochar enhanced phytostabilization of heavy metal contaminated mine tailings: A review

Shi

Zang

Yang

et al. 2022

Front. Environ. Sci.

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Mining activities has generated large amounts of mine tailings each year, and these tailings usually contain high concentrations of heavy metal pollutants, which not only cause serious damage to the local and surrounding soil ecosystems, but also harm human health via the transmission of food chain. Phytoremediation is treated as environmentally friendly, long-term effective and low-cost restoration method. However, tailing soil acidification, low organic matter content, poor water holding capacity and compaction make plant struggle to survive. Biochar, a soil conditioner can promote plant growth by improving the physical, chemical and biological properties of soil, thus strengthening the ability of phytoremediation in the contaminated tailings. This review elaborates how the physicochemical properties of biochar affect phytoremediation; and summarized how the raw materials of biochar affect the physicochemical characteristics. Finally, the future research directions are prospected.

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Feedstock type, pyrolysis temperature and acid modification effects on physiochemical attributes of biochar and soil quality

Cited by 29 publications

References 303 publications

Aged Biochar for the Remediation of Heavy Metal Contaminated Soil: Analysis through an Experimental Case the Physicochemical Property Changes of Field Aging Biochar and Its Effects on the Immobilization Mechanism for Heavy Metal

Aged Biochar for the Remediation of Heavy Metal Contaminated Soil: Analysis through an Experimental Case the Physicochemical Property Changes of Field Aging Biochar and Its Effects on the Immobilization Mechanism for Heavy Metal

A review of mechanism and adsorption capacities of biochar-based engineered composites for removing aquatic pollutants from contaminated water

Biochar enhanced phytostabilization of heavy metal contaminated mine tailings: A review

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