私密直播全婐app免费大渔直播,国产av成人无码免费视频,男女同房做爰全过程高潮,国产精品自产拍在线观看

當(dāng)前位置:群英聚首 > 論文著作 > 正文
Construction of a Bridging Network Structure by Citric Acid for Environmental Heavy Metal Extraction
來源:李詩講師個人網(wǎng)站 發(fā)布日期:2023-12-20
作者:Man Li, Shi Li*
關(guān)鍵字:excess sludge, citric acid, extraction rate, Cu, Cr
論文來源:期刊
具體來源:ACS Earth and Space Chemistry
發(fā)表時間:2023年

Organic acids are demonstrating outstanding performance in adsorption of heavy metals as a result of their biocompatible and green characteristics, which have attracted widespread attention. In this paper, the extraction rate of citric acid extracts for heavy metals of Cu and Cr in the sludge were investigated. The effects of time, pH, concentration, temperature, and other factors were studied. The results demonstrated that the leaching rate of Cu by citric acid was 82.35% with a reaction time of 18 h, pH 3, solvent concentration of 0.4 mol/L, and reaction temperature of 30 °C. In addition, the leaching rate of Cr was 93.86% at a reaction time of 15 h, pH of 3, solvent concentration of 0.4 mol/L, and reaction temperature of 30 °C. Furthermore, the distribution of environmental heavy metals was evaluated by the BCR three-state continuous extraction method for ionic patterns, which showed that the sludge was leached by citric acid and the heavy metals mainly existed in the exchangeable state and subsequently in the residual state. Eventually, the complexation of citric acid with heavy metal ions was further confirmed by molecular dynamics simulations, which provided an alternative approach and a new perspective for the purification of environmental heavy metals by organic acids.


Copyright © 2005 Polymer.cn All rights reserved
中國聚合物網(wǎng) 版權(quán)所有
經(jīng)營性網(wǎng)站備案信息

京公網(wǎng)安備11010502032929號

工商備案公示信息

京ICP證050801號

京ICP備12003651號

主站蜘蛛池模板: 宁陕县| 茶陵县| 蒙自县| 鄱阳县| 南华县| 玉田县| 鄂州市| 北川| 宁乡县| 大连市| 泊头市| 大田县| 西林县| 湟中县| 漠河县| 友谊县| 卢氏县| 白山市| 鄂州市| 盐城市| 安仁县| 遵义县| 称多县| 财经| 秦皇岛市| 黑河市| 康平县| 屏边| 尚志市| 普洱| 永康市| 嘉禾县| 响水县| 乌拉特后旗| 定边县| 峨眉山市| 资源县| 原阳县| 岳西县| 洪洞县| 台南市|