Diversity in the Mechanisms of Humin Formation during Composting with Different Materials

Wei, Zimin; Tan, Wenbing; Zhao, Yue; Wu, Junqiu; Sun, Qingping; Qi, Haishi; Xie, Xinglong

doi:10.1021/acs.est.8b06401

Cited by 240 publications

(51 citation statements)

References 39 publications

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“…Humic acid can be resynthesized from essential manure components, namely, amino acids, and from reduced sugar during the composting process [11]. Humic acid extracted from composted manure (MHA) has an aromatic compound composition with a low decomposition rate in soil [12]. It is also rich in carbonyl and phenolic compounds and is thus more reactive and has a higher complexation ability compared with leonardite [13].…”

Section: Introductionmentioning

confidence: 99%

Improved Corn Yields When Humic Acid Extracted from Composted Manure Is Applied to Acid Soils with Phosphorus Fertilizer

Purwanto

Wulandari

Sulistyaningsih

et al. 2021

Applied and Environmental Soil Science

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Most corn planted on tropical acidic soils suffers substantial yield loss caused by low crop phosphorus (P) uptake. Humic acid is recommended to increase crop P uptake since it is capable of competing with P to be bound to soil adsorption complexes. Humic acid extracted from composted manure (MHA) is a good alternative to humic acid because it is more reactive and has a higher complexation ability compared with leonardite. Therefore, the effectiveness of soil-applied MHA combined with P was evaluated to improve corn yields in acidic soils from the aspect of crop nutrient uptake efficiency and crop physiological performance. Two high-yielding corn cultivars that are highly accepted by Indonesian farmers and resistant to downy mildew disease were subjected to five different types of MHA and P combinations. The amount of P fertilizer was equivalent to 120 mg P2O5 kg−1 soil. The H10P1 produced the most significant result p < 0.05 in terms of total crop dry weight, grain dry weight, and corn yield. The highest efficiency for P uptake in the leaves and grains was found with H10P1 and H5P1, respectively. Although chlorophyll content was not substantially improved, the stomatal apertures 7 weeks after planting (WAP) were significantly increased p < 0.05 with H10P1 and H15P1. The photosynthetic rate and nitrate reductase (NR) activity at 10 WAP were significantly increased p < 0.05 with H5P1 and H10P1, respectively. The results clearly indicated significant increases in the efficiency of crop P uptake and physiological performance for stomatal aperture, photosynthetic rate, and NR activity can highly contribute to higher corn yields.

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Section: Introductionmentioning

confidence: 99%

Improved Corn Yields When Humic Acid Extracted from Composted Manure Is Applied to Acid Soils with Phosphorus Fertilizer

Purwanto

Wulandari

Sulistyaningsih

et al. 2021

Applied and Environmental Soil Science

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“…Composts from different sources may form diverse humic substance precursors (e.g., polyphenols, carboxyl acids, amino acids, reducing sugars, etc.) due to their different organic compositions, causing HA produced by composting to have different molecular composition and chemical structures [2,7]. The HA with the functional groups including phenolic, alcoholic, quinone, ketone, nitrogen and sulfur redox-active moieties as well as organic-metal chelates could mediate electron transfer process and enhance the reduction rate of ferric oxy/hydroxides [8].…”

Section: Of 13mentioning

confidence: 99%

Role of Humic Acid Chemical Structure Derived from Different Biomass Feedstocks on Fe(III) Bioreduction Activity: Implication for Sustainable Use of Bioresources

Wei

Zhang

et al. 2019

Catalysts

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Humic acids (HAs) are redox-active components that play a crucial role in catalyzing relevant redox reactions in various ecosystems. However, it is unclear what role the different compost-derived Has play in the dissimilatory Fe(III) bioreduction and which chemical structures could accelerate Fe reduction. In this study, we compared the effect of eighteen HAs from the mesophilic phase, thermophilic phase and mature phase of protein-, lignocellulose- and lignin-rich composting on catalyzing the bioreduction of Fe(III)-citrate by Shewanella oneidensis MR-1 in temporarily anoxic laboratory systems. The chemical composition and structure of different compost-derived HAs were analyzed by UV–Vis spectroscopy, excitation-emission matrices of the fluorescence spectra, and 13C-NMR. The results showed that HAs from lignocellulose- and lignin-rich composting, especially in the thermophilic phase, promoted the bioreduction of Fe(III). They also showed that HA from protein-rich materials suppressed significantly the Fe(II) production, which was mainly affected by the amount and structures of functional groups (e.g., quinone groups) and humification degree of the HAs. This study can aid in searching sustainable HA-rich composts for wide-ranging applications to catalyze redox-mediated reactions of pollutants in soils.

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“…Composting is an attractive approach for recycling organic solid waste and generating a stabilized organic fertilizer, and it involves microorganisms converting degradable organic component into humuslike substances [2,4,6,7]. The nished product, which looks like soil, is high in carbon (C) and nitrogen (N) and is an excellent medium for growing plants [5,8].…”

Section: Introductionmentioning

confidence: 99%

Keystone Genes Confer Superior Performance in Hyperthermophilic Composting

Cui

Liao

et al. 2021

Preprint

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Background: Large amounts of organic solid wastes originating from anthropogenic activities have imposed enormous pressure on the environment and human health. Our previous studies showed that compared with conventional thermophilic composting (cTC), hyperthermophilic composting (hTC) exhibits superior performance in organic solid waste disposal by providing advantages such as improved composting temperature, nitrogen conservation (NC), nitrous oxide (N2O) mitigation and germination index (GI). However, it remains unclear how hTC communities drive improved performance. Here, we used GeoChip 5.0M coupled with high-throughput 16S rRNA gene sequencing data to investigate the variations in carbon (C)-degrading and nitrogen (N)-cycling genes and microbial communities and their linkages with selected performance indices (composting temperature, NC, N2O emission rate and GI) in hTC and cTC in factory-scale experiments, aiming to identify the keystone biotic drivers for the improved performance. Results: We showed that hTC significantly altered functional composition structures compared with those in cTC, which was driven by taxonomic shift in microbial communities. Specifically, hTC significantly increased the relative abundance of C-degrading genes and decreased the relative abundance of N-cycling genes during composting. These significantly shifted genes were the keystone genes dominating the improved performance of hTC, as indicated by a random forest model. Furthermore, network and partial least squares path modeling analysis suggested that the keystone genes continued to dominantly drive the improved performance after multiple biotic (community composition and other genes) drivers were simultaneously considering in hTC. Conclusions: Together, our study provides evidence that keystone genes potentially play a pivotal role in improving composting temperature, N2O mitigation, NC and GI in hTC and emphasizes the importance of understanding the variation in functions for targeted manipulation of composting practices.

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Diversity in the Mechanisms of Humin Formation during Composting with Different Materials

Cited by 240 publications

References 39 publications

Improved Corn Yields When Humic Acid Extracted from Composted Manure Is Applied to Acid Soils with Phosphorus Fertilizer

Improved Corn Yields When Humic Acid Extracted from Composted Manure Is Applied to Acid Soils with Phosphorus Fertilizer

Role of Humic Acid Chemical Structure Derived from Different Biomass Feedstocks on Fe(III) Bioreduction Activity: Implication for Sustainable Use of Bioresources

Keystone Genes Confer Superior Performance in Hyperthermophilic Composting

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