Improvement of fuel qualities of solid fuel biochars by washing treatment

Liu, Zhengang; Hoekman, S. Kent; Balasubramanian, Rajasekhar; Zhang, Fu-Shen

doi:10.1016/j.fuproc.2015.01.025

Cited by 40 publications

(9 citation statements)

References 27 publications

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“…Washing of the dry BC and HC was carried out with distilled water in polypropylene tubes at the ratio of 1:10 (w/v). The suspensions were shaken on an orbital shaker at 120 rpm for 1 h, followed by centrifugation and filtration (Liu et al, 2015). The process was repeated thrice and the supernatant was combined and stored in polypropylene tubes as washed water of BC (WWB) and washed water of HC (WWH).…”

Section: Methodsmentioning

confidence: 99%

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

Al-Wabel

Rafique

Ahmad

et al. 2019

Saudi Journal of Biological Sciences

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Section: Methodsmentioning

confidence: 99%

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

Al-Wabel

Rafique

Ahmad

et al. 2019

Saudi Journal of Biological Sciences

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“…The biochar filter removed a substantial amount of COD from the canal water with 95% removal over 30 min of operation (Figure 6a). In contrast, the sand filter could not remove NH 4 + (Figure 6b), whereas NH 4 + adsorption occurred in the biochar filter, resulting in an effluent concentration which met the Thai coastal water quality standard for aquaculture (<0.10 mg/L) [48]. It was evident that TP could not be removed in the biochar filter during the first 200 min of operation as it was initially released from the biochar itself.…”

Section: Application Of Ch Biochar For Water Filtrationmentioning

confidence: 98%

“…It is recommended to cut corncobs into smaller pieces to decrease the moisture before carbonization in the kilns. Liu et al [48] reported biochar washing with acetic acid and citric acid could decrease ash contents to mitigate the slagging and fouling issues.…”

Section: Proximate and Ultimate Analysismentioning

confidence: 99%

Potential of Biochar Derived from Agricultural Residues for Sustainable Management

et al. 2021

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A horizontal drum kiln is a traditional method widely used in Southeast Asian countries for producing biochar. An understanding of temperature conditions in the kiln and its influence on biochar properties is crucial for identifying suitable biochar applications. In this study, four agricultural residues (corncob, coconut husk, coconut shell, and rice straw) were used for drum kiln biochar production. The agricultural residues were turned into biochar within 100–200 min, depending on their structures. The suitability of biochar for briquette fuels was analyzed using proximate, ultimate, and elemental analysis. The biochar’s physical and chemical properties were characterized via bulk density, iodine number, pHpzc, SEM, and FTIR measurements. All biochars had low O/C and H/C ratios and negative charge from both carbonyl and hydroxyl groups. Coconut husk and shell biochar had desirable properties such as high heating value and a high amount of surface functional groups which can interact with nutrients in soil. These biochars are thus suitable for use for a variety of purposes including as biofuels, adsorbents, and as soil amendments.

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“…The biochar yield from torrefaction is much higher than pyrolysis due to the lower temperature utilized in the torrefaction process (Table 1). For example, Liu et al [73] reported that biomass heated at 290 °C for 10 and 40 min yielded 80 and 62% of biochar, respectively. Table 1.…”

Section: Torrefactionmentioning

confidence: 99%

Biochar and Its Broad Impacts in Soil Quality and Fertility, Nutrient Leaching and Crop Productivity: A Review

et al. 2021

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Biochar is gaining significant attention due to its potential for carbon (C) sequestration, improvement of soil health, fertility enhancement, and crop productivity and quality. In this review, we discuss the most common available techniques for biochar production, the main physiochemical properties of biochar, and its effects on soil health, including physical, chemical, and biological parameters of soil quality and fertility, nutrient leaching, salt stress, and crop productivity and quality. In addition, the impacts of biochar addition on salt-affected and heavy metal contaminated soils were also reviewed. An ample body of literature supports the idea that soil amended with biochar has a high potential to increase crop productivity due to the concomitant improvement in soil structure, high nutrient use efficiency (NUE), aeration, porosity, and water-holding capacity (WHC), among other soil amendments. However, the increases in crop productivity in biochar-amended soils are most frequently reported in the coarse-textured and sandy soils compared with the fine-textured and fertile soils. Biochar has a significant effect on soil microbial community composition and abundance. The negative impacts that salt-affected and heavy metal polluted soils have on plant growth and yield and on components of soil quality such as soil aggregation and stability can be ameliorated by the application of biochar. Moreover, most of the positive impacts of biochar application have been observed when biochar was applied with other organic and inorganic amendments and fertilizers. Biochar addition to the soil can decrease the nitrogen (N) leaching and volatilization as well as increase NUE. However, some potential negative effects of biochar on microbial biomass and activity have been reported. There is also evidence that biochar addition can sorb and retain pesticides for long periods of time, which may result in a high weed infestation and control cost.

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Improvement of fuel qualities of solid fuel biochars by washing treatment

Cited by 40 publications

References 27 publications

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

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

Potential of Biochar Derived from Agricultural Residues for Sustainable Management

Biochar and Its Broad Impacts in Soil Quality and Fertility, Nutrient Leaching and Crop Productivity: A Review

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