Production of artificial humic acid from biomass residues by a non-catalytic hydrothermal process

Shao, Yuchao; Bao, Menggang; Huo, Weizhong; Ye, Rong; Liu, Yanqing; Lu, Wenjing

doi:10.1016/j.jclepro.2021.130302

Cited by 62 publications

(16 citation statements)

References 36 publications

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“…The peak at 1381 cm −1 corresponds to N-O from nitrate (Palapa et al, 2021) . The new peak around 1000 cm −1 at ZnAl-Hydrochar and ZnAl-Humic acid indicated C-O stretching from hydrochar and humic acid (Lu et al, 2019;Shao et al, 2022). The peak at 500-700 cm −1 assigns to metal-oxide in LDH (Ahmad et al, 2022b) .…”

Section: Figure 2 Ftir Spectra Of Adsorbentsmentioning

confidence: 93%

Hydrochar and Humic Acid as Template of ZnAl Layered Double Hydroxide for Adsorption of Phenol

Badaruddin

Ahmad

Fitri

et al. 2022

Sci. Technol. Indones

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The adsorbents potential ZnAl-LDH, ZnAl-Hydrochar, and ZnAl-Humic acid were prepared using the coprecipitation method. The adsorbents were characterization by XRD, FTIR, and BET analysis. XRD peaks of ZnAl-LDH at 10.29°, 20.07°, 29.59°, 32.12°, 34.02°, 48.06°, and 60.16°. The FTIR absorption peak was observed at 3400-3500 cm−1, 1600-1700 cm−1, 1381 cm−1, 1000 cm−1, 500-700 cm−1. All adsorbents exhibited N2 adsorption-desorption isotherms type IV classified as a mesoporous structure (pore size= 2-50 nm). The surface areas of composites were higher than LDH and following order: ZnAl-Hydrochar > ZnAl-Humic acid > ZnAl-LDH. The kinetic parameter showed the pseudo-second-order kinetics model. The maximum adsorption capacity of ZnAl-LDH, ZnAl-Hydrochar, and ZnAl-Humic acid were 48.077 mg/g, 90.090 mg/g, 94.340 mg/g, respectively; with Freundlich isotherm model. Reusability after 5 times of ZnAl-LDH, ZnAl-Hydrochar, and ZnAl-Humic acid in the range 49.81-0.890%, 95.92-9.84%, and 70.02-5.72%, respectively. The adsorbent can be used up to 3 times.

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Section: Figure 2 Ftir Spectra Of Adsorbentsmentioning

confidence: 93%

Hydrochar and Humic Acid as Template of ZnAl Layered Double Hydroxide for Adsorption of Phenol

Badaruddin

Ahmad

Fitri

et al. 2022

Sci. Technol. Indones

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“…Table 2 describes recent developments in the transformation of waste biomass and non-lignin biomass materials into HS by hydrothermal (HT) and alkali pre-treatment [83][84][85][86][87][88][89][90]. A two-stage HT process (200 ℃) was developed and successfully generated 28 wt.% of HA from corn stalks [83]. The study reported that transforming biomass to HA by HT depends on the pH of the solution.…”

Section: Humification Of Waste Biomass and Non-lignin Biomass Materialsmentioning

confidence: 99%

Latest development in the fabrication and use of lignin-derived humic acid

Sutradhar

Fatehi

2023

Biotechnol Biofuels

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Humic substances (HS) are originated from naturally decaying biomass. The main products of HS are humic acids, fulvic acids, and humins. HS are extracted from natural origins (e.g., coals, lignite, forest, and river sediments). However, the production of HS from these resources is not environmentally friendly, potentially impacting ecological systems. Earlier theories claimed that the HS might be transformed from lignin by enzymatic or aerobic oxidation. On the other hand, lignin is a by-product of pulp and paper production processes and is available commercially. However, it is still under-utilized. To address the challenges of producing environmentally friendly HS and accommodating lignin in valorized processes, the production of lignin-derived HS has attracted attention. Currently, several chemical modification pathways can be followed to convert lignin into HS-like materials, such as alkaline aerobic oxidation, alkaline oxidative digestion, and oxidative ammonolysis of lignin. This review paper discusses the fundamental aspects of lignin transformation to HS comprehensively. The applications of natural HS and lignin-derived HS in various fields, such as soil enrichment, fertilizers, wastewater treatment, water decontamination, and medicines, were comprehensively discussed. Furthermore, the current challenges associated with the production and use of HS from lignin were described.

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“…Comparing with other humification process of biomass waste, the HA yields achieved were significant lower. Shao et al (2022 ) developed the hydrothermal process that combined the acid hydrothermal pretreatment for biomass waste and alkaline hydrothermal humification, aiming to further improve the HA yield. The highest HA yield based on biomass waste (dry basis) achieved until now is 28.74 wt%.…”

Section: Biomass Waste Humification Processesmentioning

confidence: 99%

Humic Substances Derived From Biomass Waste During Aerobic Composting and Hydrothermal Treatment: A Review

Huo

Chen

et al. 2022

Front. Bioeng. Biotechnol.

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Humic substances (HSs) occupy 80% of organic matter in soil and have been widely applied for soil remediation agents, potential battery materials, and adsorbents. Since the HS extraction rate is very low by microbial degradation in nature, artificial humification processes such as aerobic composting (AC) and hydrothermal treatment (HT) have attracted a great deal of attention as the most important strategies in HS production. This article aims to provide a state-of-the-art review on the development of conversion of biomass waste into HSs based on AC and HT for the first time in terms of mechanisms, characteristics of HSs’ molecular structure, and influencing factors. In addition, some differences based on the aforementioned information between AC and HT are reviewed and discussed in the conversion of biomass waste into HSs in a pioneering way. For biomass waste conversion, a feasible strategy on effective humification processes by combining AC with HT is proposed.

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Production of artificial humic acid from biomass residues by a non-catalytic hydrothermal process

Cited by 62 publications

References 36 publications

Hydrochar and Humic Acid as Template of ZnAl Layered Double Hydroxide for Adsorption of Phenol

Hydrochar and Humic Acid as Template of ZnAl Layered Double Hydroxide for Adsorption of Phenol

Latest development in the fabrication and use of lignin-derived humic acid

Humic Substances Derived From Biomass Waste During Aerobic Composting and Hydrothermal Treatment: A Review

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