生态环境学报2025，Vol.34Issue(4)：642-652,11.DOI:10.16258/j.cnki.1674-5906.2025.04.013
含重金属林木生物质与骨粉共水热液相产物:解析及应用潜力初步评价
Co-hydrothermal Liquid Phase Product of Heavy Metal-containing Trees and Bone Meal:Analysis and Preliminary Evaluation
摘要
Abstract
Phytoremediation technology is effective,environmentally friendly,and inexpensive for soil remediation of heavy metals(HMs)pollution.However,phytoremediation-derived waste biomass(PB)contains abundant heavy metal(Hms)that may cause secondary contamination without suitable treatment.In previous studies,we developed a hydrothermal system of PB and bone meal(BM)supported by co-hydrothermal technology(Co-HTC),which achieved the efficient fixation of heavy metals in the solid phase.Nevertheless,the composition and potential value of liquid-phase(PB/BM-L)products have not been thoroughly analyzed.Inductively coupled plasma emission spectrometer(ICP-OES),gas chromatography-mass spectrometry(GC×MS),continuous flow injection analyzer(FIA),Kjeldt nitrogen analyzer(KNA)and organic carbon/total nitrogen analyzer(TOC)were used to evaluate the safety of PB/BM-L,respectively.It was used in willow pot experiments to evaluate its effect on alkaline soil and plant growth,and to comprehensively evaluate its potential application value.The results show that the concentrations of Cd and Zn in PB/BM-L were lower than the national comprehensive sewage discharge standard(GB 8978-1996),(Cd≤0.1 mg∙L-1,Zn≤2 mg∙L-1),which is rich in nutrients such as total nitrogen(TN,12.87 to 17.78 g∙L-1),total phosphorus(TP,13.13 to 20.03 g∙L-1),and total organic carbon(TOC,8.97 to 13.46 g∙L-1).The pH is in the acidic range(4.53 to 4.72),and contains a variety of mineral elements such as Ca(26.61 to 42.85 g∙L-1),Mg(5.28 to 9.33 g∙L-1),Fe(5.28 to 9.33 g∙L-1),etc.In addition,the relative contents of PB/BM-L organic components in the liquid-phase products were analyzed.This was followed by phenol(52.81%),ketones(12.21%),pyrazine(10.09%),esters(8.64%),aldehydes(5.55%),hydrocarbons(3.62%),acids(3.11%),amines(2.81%),alcohols(0.63%)and pyridine(0.53%).The L-3%treatment in the pot experiment significantly increased willow biomass(roots,22.50%;stems,26.17%;leaves,37.08%),increased plant height by 22.64%,stem diameter by 19.23%,and decreased soil pH(7.96 to 7.84).The soil physical properties were improved,the soil water content and porosity were increased by 2.01%and 0.99%respectively,while the soil bulk density was decreased by 0.17 g∙cm-3.Soil total nitrogen(TN),hydrolyzed nitrogen(HN),total organic carbon(TOC),available phosphorus(AP),and available potassium(AK)increased,whereas soil alkaline phosphatase(ALP),sucrase(Suc),and urease(Ure)activities increased by 81.17%,293.04%,and 89.57%,respectively.In summary,PB/BM-L has great application prospects in improving the quality of alkaline and barren land and is expected to realize the secondary utilization of waste.关键词
植物修复衍生生物质/液相产物/重金属/安全性评价/土壤改良Key words
phytoremediation-derived biomass/liquid phase products/heavy metal/safety evaluation/soil improvement分类
资源环境引用本文复制引用
陈岩,石成龙,李璞君,肖江,陈光才..含重金属林木生物质与骨粉共水热液相产物:解析及应用潜力初步评价[J].生态环境学报,2025,34(4):642-652,11.基金项目
中央级公益性科研院所基金面上项目(CAFYBB2022SY012) （CAFYBB2022SY012）
国家自然科学基金青年基金项目(32101370) （32101370）
中国博士后科学基金特别资助(2019T120154) （2019T120154）
