Hydrothermal synthesis of similar mineral-sourced humic acid from food waste and the role of protein

IF 8 1区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Science of the Total Environment Pub Date : 2022-07-01 DOI:10.1016/j.scitotenv.2022.154440

Pengfei Chen , Renjie Yang , Yuhou Pei , Yang Yang , Jiong Cheng , Daoping He , Qing Huang , Heng Zhong , Fangming Jin

{"title":"Hydrothermal synthesis of similar mineral-sourced humic acid from food waste and the role of protein","authors":"Pengfei Chen , Renjie Yang , Yuhou Pei , Yang Yang , Jiong Cheng , Daoping He , Qing Huang , Heng Zhong , Fangming Jin","doi":"10.1016/j.scitotenv.2022.154440","DOIUrl":null,"url":null,"abstract":"<div><p>Food waste is a challenging biomass resource due to its high moisture content, low calorific value, and complex composition. Natural humification of animal and plant residues is highly related to microorganism activity, but natural hydrothermal conditions are also speculated to play a significant role. In this work, a novel method for the conversion of food waste into artificial humic acid (HA<sub>a</sub>) under hydrothermal conditions is proposed. The results revealed that an optimum HA<sub>a</sub> yield of 43.5% from food waste was successfully obtained at 215 °C for only 1 h. Detailed analyses, including elemental analysis (EA), X-ray photoelectron spectroscopy (XPS), nuclear magnetic resonance (NMR), and Fourier transform infrared (FT-IR) spectroscopy, showed that the produced HA<sub>a</sub> had similar structures and compositions with natural HA extracted from minerals. Moreover, the proteins contained in the food waste significantly promoted HA formation through the reaction of saccharides with amino acids, in which Maillard-like reactions were the key steps. These results not only provide experimental evidence for verifying the role of hydrothermal reactions in transforming food waste into humic acid but also provide insight into effective resource utilization of food waste.</p></div>","PeriodicalId":422,"journal":{"name":"Science of the Total Environment","volume":"828 ","pages":"Article 154440"},"PeriodicalIF":8.0000,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"20","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Science of the Total Environment","FirstCategoryId":"93","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0048969722015339","RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENVIRONMENTAL SCIENCES","Score":null,"Total":0}

引用次数: 20

Abstract

Food waste is a challenging biomass resource due to its high moisture content, low calorific value, and complex composition. Natural humification of animal and plant residues is highly related to microorganism activity, but natural hydrothermal conditions are also speculated to play a significant role. In this work, a novel method for the conversion of food waste into artificial humic acid (HA_a) under hydrothermal conditions is proposed. The results revealed that an optimum HA_a yield of 43.5% from food waste was successfully obtained at 215 °C for only 1 h. Detailed analyses, including elemental analysis (EA), X-ray photoelectron spectroscopy (XPS), nuclear magnetic resonance (NMR), and Fourier transform infrared (FT-IR) spectroscopy, showed that the produced HA_a had similar structures and compositions with natural HA extracted from minerals. Moreover, the proteins contained in the food waste significantly promoted HA formation through the reaction of saccharides with amino acids, in which Maillard-like reactions were the key steps. These results not only provide experimental evidence for verifying the role of hydrothermal reactions in transforming food waste into humic acid but also provide insight into effective resource utilization of food waste.

Abstract Image

查看原文本刊更多论文

从食物垃圾中水热合成类似矿物来源的腐植酸及蛋白质的作用

由于食物垃圾的高水分含量、低热值和复杂的成分，它是一种具有挑战性的生物质资源。动植物残留物的自然腐殖化与微生物活性密切相关，但自然热液条件也被推测起重要作用。提出了一种在水热条件下将食物垃圾转化为人工腐植酸(HAa)的新方法。结果表明，从食物垃圾中提取的HAa在215°C下仅1 h的最佳产率为43.5%。包括元素分析(EA)、x射线光电子能谱(XPS)、核磁共振(NMR)和傅里叶变换红外(FT-IR)光谱的详细分析表明，所生产的HAa与从矿物中提取的天然HA具有相似的结构和成分。此外，食物垃圾中含有的蛋白质通过糖与氨基酸的反应显著促进透明质酸的形成，其中美拉德反应是关键步骤。这些结果不仅为验证水热反应在食物垃圾转化为腐植酸中的作用提供了实验证据，也为食物垃圾的有效资源化利用提供了新的思路。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Science of the Total Environment 环境科学-环境科学

CiteScore

17.60

自引率

10.20%

发文量

8726

审稿时长

2.4 months

期刊介绍： The Science of the Total Environment is an international journal dedicated to scientific research on the environment and its interaction with humanity. It covers a wide range of disciplines and seeks to publish innovative, hypothesis-driven, and impactful research that explores the entire environment, including the atmosphere, lithosphere, hydrosphere, biosphere, and anthroposphere. The journal's updated Aims & Scope emphasizes the importance of interdisciplinary environmental research with broad impact. Priority is given to studies that advance fundamental understanding and explore the interconnectedness of multiple environmental spheres. Field studies are preferred, while laboratory experiments must demonstrate significant methodological advancements or mechanistic insights with direct relevance to the environment.