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Lei T, Su J, Chang L, He R, Shan G, Jiang X, Lei Y, Guo X. Artificial humic acid produced from wet distillers grains in a microwave-assisted hydrothermal process: Physicochemical characteristics and stimulation to plant growth. CHEMOSPHERE 2024:142979. [PMID: 39098348 DOI: 10.1016/j.chemosphere.2024.142979] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2024] [Revised: 07/19/2024] [Accepted: 07/29/2024] [Indexed: 08/06/2024]
Abstract
Wet distillers grains, as a waste biomass with a large annual output, pose a threat to the environment and food industry. Herein, artificial humic acid (AHA) was first produced from wet distillers grains in a dual-stage microwave-assisted hydrothermal process. The influence of temperature on AHA's characteristics was investigated and compared with natural humic acid (NHA) and standard humic acid (SHA). A high yield of AHA at 20.6% was obtained at 200 °C with a total reaction time of 1 h, which is 1.8-3.1 times that obtained in traditional single-stage hydrothermal process. Increasing the reaction temperature induced the formation of phenolic hydroxyl in AHA. AHA was rich in aromaticity and carboxylic acid structure, showing similar spectral characteristics to NHA. The distribution of molecular weight of AHA was mostly 5797 Da, which decreased by 15% compared to SHA. The optimal concentration of AHA to promote seedling growth was 0.2 g/L, and the root length was 2.0 times that of the control. The microwave hydrothermal process is a facile and efficient approach to preparing AHA from waste biomass with high moisture content.
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Affiliation(s)
- Tianlong Lei
- Key Laboratory of Development and Application of Rural Renewable Energy (Ministry of Agriculture and Rural Affairs), Biogas Institute of Ministry of Agriculture and Rural Affairs, Chengdu 610041, China; Rural Energy and Ecology Research Center of Chinese Academy of Agricultural Science, Chengdu 610041, China
| | - Jie Su
- Tarim Oilfield Company, PetroChina, Korla 841000, China
| | - Luyi Chang
- Key Laboratory of Development and Application of Rural Renewable Energy (Ministry of Agriculture and Rural Affairs), Biogas Institute of Ministry of Agriculture and Rural Affairs, Chengdu 610041, China; Rural Energy and Ecology Research Center of Chinese Academy of Agricultural Science, Chengdu 610041, China
| | - Rui He
- Key Laboratory of Development and Application of Rural Renewable Energy (Ministry of Agriculture and Rural Affairs), Biogas Institute of Ministry of Agriculture and Rural Affairs, Chengdu 610041, China; Rural Energy and Ecology Research Center of Chinese Academy of Agricultural Science, Chengdu 610041, China
| | - Guangchun Shan
- State Key Laboratory of Environmental Criteria and Risk Assessment, and State Environmental Protection Key Laboratory of Simulation and Control of Groundwater Pollution, Chinese Research Academy of Environmental Sciences, Beijing 100012, China; State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Xiaomei Jiang
- Key Laboratory of Development and Application of Rural Renewable Energy (Ministry of Agriculture and Rural Affairs), Biogas Institute of Ministry of Agriculture and Rural Affairs, Chengdu 610041, China; Rural Energy and Ecology Research Center of Chinese Academy of Agricultural Science, Chengdu 610041, China
| | - Yunhui Lei
- Key Laboratory of Development and Application of Rural Renewable Energy (Ministry of Agriculture and Rural Affairs), Biogas Institute of Ministry of Agriculture and Rural Affairs, Chengdu 610041, China; Rural Energy and Ecology Research Center of Chinese Academy of Agricultural Science, Chengdu 610041, China
| | - Xiaobo Guo
- Key Laboratory of Development and Application of Rural Renewable Energy (Ministry of Agriculture and Rural Affairs), Biogas Institute of Ministry of Agriculture and Rural Affairs, Chengdu 610041, China; Rural Energy and Ecology Research Center of Chinese Academy of Agricultural Science, Chengdu 610041, China.
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Liu Z, Su J, Yao Z, Zhang Y, Wang L, Zhao L. Enhancing humic acids production from cornstalk under fast hydrothermal conditions: Insights into new pathways of skeleton self-polymerization and branch growth. BIORESOURCE TECHNOLOGY 2024; 406:131020. [PMID: 38909871 DOI: 10.1016/j.biortech.2024.131020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2024] [Revised: 06/04/2024] [Accepted: 06/20/2024] [Indexed: 06/25/2024]
Abstract
Hydrochar, a sustainable fertilizer rich in humic substances, is made from lignocellulose through hydrothermal conversion. However, hydrothermal humification (HTH) is challenged by low yields and limited selectivity in the resulting hydrochar. This study proved humic-like acids production can be enhanced under fast non-catalytic conditions (260 ∼ 280 °C, 0 ∼ 1 h). A higher yield (by 14.1 %) and selectivity (by 40.2 %) in hydrochar of humic-like acids than conventional HTH (<250 °C) were achieved. Meanwhile, decreased lignin derivatives, carbonyl and quinone groups, as well as increased sp2-C structures in the humic-like acids were observed. The synthesized humic-like acids exhibited a lower degree of aromatization and a higher molecular weight than commercial variants. Two pathways of humic-like acids formation of self-polymerization and the development of branched sidechains were hypothesized based on mass mitigation, carbon flow and aqueous phase compositions. This research contributes a novel approach to producing humic-like acids rich hydrochar for environmentally friendly fertilizer production.
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Affiliation(s)
- Ziyun Liu
- Key Laboratory of Low-carbon Green Agriculture in North China, Ministry of Agriculture and Rural Affairs P. R. China. Institute of Environment and Sustainable Development in Agriculture, CAAS, Beijing 100081, China; Department of Agricultural and Biological Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Jinting Su
- Key Laboratory of Low-carbon Green Agriculture in North China, Ministry of Agriculture and Rural Affairs P. R. China. Institute of Environment and Sustainable Development in Agriculture, CAAS, Beijing 100081, China; School of Agricultural Engineering and Food Science, Shandong Research Center of Engineering and Technology for Clean Energy, Shandong University of Technology, Zibo, China
| | - Zonglu Yao
- Key Laboratory of Low-carbon Green Agriculture in North China, Ministry of Agriculture and Rural Affairs P. R. China. Institute of Environment and Sustainable Development in Agriculture, CAAS, Beijing 100081, China
| | - Yuanhui Zhang
- Department of Agricultural and Biological Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Lihong Wang
- School of Agricultural Engineering and Food Science, Shandong Research Center of Engineering and Technology for Clean Energy, Shandong University of Technology, Zibo, China
| | - Lixin Zhao
- Key Laboratory of Low-carbon Green Agriculture in North China, Ministry of Agriculture and Rural Affairs P. R. China. Institute of Environment and Sustainable Development in Agriculture, CAAS, Beijing 100081, China.
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Zhao S, Liu G, Xiong J, Chang D, Li Y, Wang W, Chang H, Wang D. Evaluation of hydrochar-derived modifier and water-soluble fertilizer on saline soil improvement and pasture growth. Sci Rep 2024; 14:16759. [PMID: 39033168 PMCID: PMC11271460 DOI: 10.1038/s41598-024-66615-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Accepted: 07/02/2024] [Indexed: 07/23/2024] Open
Abstract
Soil salinization poses a serious threat to crop growth. The selection of appropriate soil modifiers and water-soluble fertilizers for saline soils represents a crucial method for enhancing crop yields. The modifiers and medium-element water-soluble fertilizers were prepared using hydrochar derived from rice straw. Two distinct experiments were designed to study the effect of modifiers and water-soluble fertilizers on saline soils. The first experiment, designated as the "Soil Cultivation Experiment" , sought to investigate the impact of various modifiers on soil quality. The second experiment, designated as the "Method of Field Micro-Area Experiment", aimed to assess the influence of water-soluble fertilizers on saline soils. The results showed that the application of modifiers and water-soluble fertilizers significantly enhanced comprehensive soil physical and chemical properties, crop growth, soil enzyme activity, and other key indicators in saline and alkaline soils. The optimal dosage of the modifier was 20 g/kg, which reduced the pH value from 8.62 to 8.21 and the decreased alkalinity by 8.26%. Furthermore, their application effectively boosted nutrient levels, including organic matter, and increased soil enzyme activity. The biomass of alfalfa showed enhancements of 63.01% and 20.87% and the biomass of leymus chinensis increased by 29.39% and 9.02% for the two batches, respectively. Notably, the application of water-soluble fertilizer yielded achieved superior results. This study also provided a theoretical basis for their future application in soda saline-alkali soil.
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Affiliation(s)
- Shengchen Zhao
- College of Resource and Environmental Science, Jilin Agricultural University, Changchun, 130118, Jilin, China
| | - Gang Liu
- School of Computer Science, Baicheng Normal University, Baicheng, 137000, Jilin, China
| | - Jiawei Xiong
- College of Traditional Chinese Medicine, Jilin Agricultural University, Changchun, 130118, Jilin, China
| | - Danfeng Chang
- College of Resource and Environmental Science, Jilin Agricultural University, Changchun, 130118, Jilin, China
| | - Yunhui Li
- College of Engineering, Jilin Normal University, Siping, 136000, Jilin, China
| | - Wei Wang
- College of Engineering, Jilin Normal University, Siping, 136000, Jilin, China
| | - Haibo Chang
- College of Resource and Environmental Science, Jilin Agricultural University, Changchun, 130118, Jilin, China.
- Scientific and Technological Innovation Center of Health Products and Medical Materials With Characteristic Resources of Jilin Province, Changchun, 130118, China.
| | - Dapeng Wang
- College of Resource and Environmental Science, Jilin Agricultural University, Changchun, 130118, Jilin, China.
- Scientific and Technological Innovation Center of Health Products and Medical Materials With Characteristic Resources of Jilin Province, Changchun, 130118, China.
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Chen X, Yang B, Zhou H, Boguta P, Fu X, Ivanets A, Ratko AA, Kouznetsova T, Liu Y, He X, Zhao D, Su X. Iron oxyhydroxide catalyzes production of artificial humic substances from waste biomass. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 352:120152. [PMID: 38266528 DOI: 10.1016/j.jenvman.2024.120152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2023] [Revised: 01/12/2024] [Accepted: 01/18/2024] [Indexed: 01/26/2024]
Abstract
Production of artificial humic substances (AHS) from waste biomass will contribute to environmental protection and agricultural productivity. However, there is still a lack of a faster, more efficient and eco-friendly way for sustainable production. In this study, we proposed a method to accelerate the production of AHS from cotton stalks by mild pyrolysis and H2O2 oxidation in only 4 hours, and investigated the formation of AHS during biomass transformation. We found that the process increased the aromatic matrix and facilitated biomass transformation by enhancing the depolymerization of lignin into micromolecular phenolics (e.g., guaiacol, p-ethyl guaiacol, etc.). The optimum conditions of pyrolysis at 250 °C and oxidation with 6 mL H2O2 (5 wt%) yielded up to 19.28 ± 1.30 wt% artificial humic acid (AHA) from cotton stalks. In addition, we used iron oxyhydroxide (FeOOH) to catalyze biomass transformation and investigated the effect of FeOOH on the composition and properties of AHS. 1.5 wt% FeOOH promoted the increased content of artificial fulvic acid (AFA) in AHS from 10.1% to 26.5%, eventually improving the activity of AHS. FeOOH raised the content of oxygen-containing groups, such as carboxylic acids and aldehyde, and significantly increased polysaccharide (10.94%-18.95%) and protein (1.95%-2.18%) derivatives. Polymerization of amino acid analogs and many small-molecule carbohydrates (e.g., furans, aldehydes, ketones, and their derivatives) promoted AFA formation. Finally, carbon flow analysis and maize incubation tests confirmed that AHS were expected to achieve carbon emission reductions and reduce environmental pollution from fertilizers. This study provides a sustainable strategy for the accelerated production of AHS, which has important application value for waste biomass resource utilization.
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Affiliation(s)
- Xinyu Chen
- School of Environment and Energy, Guangdong Provincial Key Laboratory of Solid Wastes Pollution Control and Recycling, South China University of Technology, Guangzhou, Guangdong, 510006, PR China
| | - Bo Yang
- School of Environment and Energy, Guangdong Provincial Key Laboratory of Solid Wastes Pollution Control and Recycling, South China University of Technology, Guangzhou, Guangdong, 510006, PR China
| | - Hao Zhou
- School of Environment and Energy, Guangdong Provincial Key Laboratory of Solid Wastes Pollution Control and Recycling, South China University of Technology, Guangzhou, Guangdong, 510006, PR China
| | - Patrycja Boguta
- Institute of Agrophysics, Polish Academy of Sciences, Doświadczalna 4, 20-290, Lublin, Poland
| | - Xinying Fu
- School of Environment and Energy, Guangdong Provincial Key Laboratory of Solid Wastes Pollution Control and Recycling, South China University of Technology, Guangzhou, Guangdong, 510006, PR China
| | - Andrei Ivanets
- State Scientific Institution, "Institute of General and Inorganic Chemistry of National Academy of Sciences of Belarus", Minsk, 220072, Belarus
| | - Alexander A Ratko
- State Scientific Institution, "Institute of General and Inorganic Chemistry of National Academy of Sciences of Belarus", Minsk, 220072, Belarus
| | - Tatyana Kouznetsova
- State Scientific Institution, "Institute of General and Inorganic Chemistry of National Academy of Sciences of Belarus", Minsk, 220072, Belarus
| | - Yongqi Liu
- School of Environment and Energy, Guangdong Provincial Key Laboratory of Solid Wastes Pollution Control and Recycling, South China University of Technology, Guangzhou, Guangdong, 510006, PR China
| | - Xiaoyan He
- Key Laboratory of Clean Conversion and High Value Utilization of Biomass Resources in Xinjiang,School of Chemistry and Chemical Engineering,Yili Normal University, Yining 835000, China
| | - Dongmei Zhao
- Xinjiang Huier Agricultural Group Co Ltd, Changji, Xinjiang, 831100, PR China
| | - Xintai Su
- School of Environment and Energy, Guangdong Provincial Key Laboratory of Solid Wastes Pollution Control and Recycling, South China University of Technology, Guangzhou, Guangdong, 510006, PR China.
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Shao Y, Li Z, Long Y, Zhao J, Huo W, Luo Z, Lu W. Direct humification of biowaste with hydrothermal technology: A review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 908:168232. [PMID: 37923260 DOI: 10.1016/j.scitotenv.2023.168232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2023] [Revised: 10/28/2023] [Accepted: 10/28/2023] [Indexed: 11/07/2023]
Abstract
Hydrothermal humification of biowaste, in comparison to the traditional coal-based humic acid extraction process, better aligns with the goals of carbon neutrality and sustainability. This article provided a comprehensive review on the current advancements in hydrothermal humification of biowaste. Hydrothermal humic acid (HHA) derived from different biowaste sources was compared, exhibiting significant differences in their hydrophobicity, oxygen-containing functional group content, and structural characteristics. The influence of key parameters, including reaction temperature, residence time, pH and the action of catalysts on HHA yield was analyzed. The pathways through which biowaste and its major components transform into HHA were elucidated. Coal-like hydrochar has shown significant potential for producing HHA through hydrothermal treatment, with HHA selectivity exceeding 65 %. HHA also exhibits promising performance in agriculture and environmental remediation, offering comparable value to commercial humic acid. Future research should concentrate on establishing the correlation between hydrothermal conditions and the efficiency of biowaste humification, thereby facilitating the development of a predictive model for assessing efficiency. Additionally, exploring the application value of hydrothermal-synthesized HHA with diverse chemical characteristics will guide the optimization of hydrothermal conditions and selection of suitable feedstock.
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Affiliation(s)
- Yuchao Shao
- School of Environment, Tsinghua University, Beijing 100084, China
| | - Zhihua Li
- School of Materials, Beijing Institute of Technology, Beijing 100081, China
| | - Yuyang Long
- Zhejiang Provincial Key Laboratory of Solid Waste Treatment and Recycling, School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310012, China
| | - Jun Zhao
- Department of Biology, Institute of Bioresource and Agriculture, Hong Kong Baptist University, Kowloon Tong, Hong Kong, China
| | - Weizhong Huo
- School of Environment, Tsinghua University, Beijing 100084, China
| | - Zhangrui Luo
- School of Environment, Tsinghua University, Beijing 100084, China
| | - Wenjing Lu
- School of Environment, Tsinghua University, Beijing 100084, China.
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