RCEES OpenIR  > 中国科学院环境生物技术重点实验室
Effects of lignocellulosic biomass type on nutrient recovery and heavy metal removal from digested sludge by hydrothermal treatment
Ebrahimi, Majid; Hassanpour, Morteza; Rowlings, David W.; Bai, Zhihui; Dunn, Kameron; O'Hara, Ian M.; Zhang, Zhanying
2022-09-15
Source PublicationJOURNAL OF ENVIRONMENTAL MANAGEMENT
ISSN0301-4797
Volume318Issue:0Pages:115524
AbstractSludge is a nutrient-rich organic waste generated from wastewater treatment plants. However, the application of sludge as a nutrient source is limited by its high contents of water and pollutants. In this study, the effects of biomass type on nutrient recovery and heavy metal removal from digested sludge by hydrothermal treatment (HTT) were investigated. Blending biomass with digested sludge for HTT at 180-240 degrees C increased the recovery of nitrogen in the treated solids. At the HTT temperature of 240 degrees C, HTT with hardwood sawdust led to the highest nitrogen recovery of 70.6%, compared to the lowest nitrogen recovery of 36.5% without biomass. Blending biomass slightly decreased the recovery of phosphorus compared to those without biomass. Nevertheless, the lowest phosphorus recovery of 91.3% with the use of hardwood sawdust at the HTT temperature of 240 degrees C was only similar to 7.0% less than that without biomass. Blending biomass reduced the contents of macro-metals such as Ca, Fe, Mg and Al in treated solids but the metal contents varied with different biomasses. Regarding the heavy metals, the use of rice husk did not decrease the contents of Ni and Co while blending bagasse did not decrease the content of Cr at HTT temperatures of 210 degrees C and 240 degrees C compared to the use of other biomasses. The different effects of biomass type on nutrient recovery and heavy metals were likely related to the types and abundances of organic acids such as acetic acid, oxygen-containing functional groups such as C-OH and COOH, oxide minerals such as silica from biomasses and the overall effects of these factors. This study provides very useful information in selection of lignocellulosic biomass for HTT of sludge for nutrient recovery and heavy metal removal.
Department中国科学院环境生物技术重点实验室 ; 中国科学院环境生物技术重点实验室
KeywordSEWAGE-SLUDGE SILANOL GROUPS RICE HUSK PHOSPHORUS HYDROCHAR FATE COCARBONIZATION CARBONIZATION NITROGEN WASTES
Document Type期刊论文
Identifierhttps://ir.rcees.ac.cn/handle/311016/47782
Collection中国科学院环境生物技术重点实验室
Corresponding AuthorZhang, Zhanying
Affiliation1.Queensland Univ Technol, Fac Sci, Ctr Agr & Bioecon, 2 George St, Brisbane, Qld 4000, Australia
2.Queensland Univ Technol, Fac Engn, Sch Mech Med & Proc Engn, 2 George St, Brisbane, Qld 4000, Australia
3.Queensland Univ Technol, Fac Sci, Sch Biol & Environm Sci, 2 George St, Brisbane, Qld 4000, Australia
4.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Key Lab Environm Biotechnol, Beijing 100085, Peoples R China
5.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Ebrahimi, Majid,Hassanpour, Morteza,Rowlings, David W.,et al. Effects of lignocellulosic biomass type on nutrient recovery and heavy metal removal from digested sludge by hydrothermal treatment[J]. JOURNAL OF ENVIRONMENTAL MANAGEMENT,2022,318(0):115524.
APA Ebrahimi, Majid.,Hassanpour, Morteza.,Rowlings, David W..,Bai, Zhihui.,Dunn, Kameron.,...&Zhang, Zhanying.(2022).Effects of lignocellulosic biomass type on nutrient recovery and heavy metal removal from digested sludge by hydrothermal treatment.JOURNAL OF ENVIRONMENTAL MANAGEMENT,318(0),115524.
MLA Ebrahimi, Majid,et al."Effects of lignocellulosic biomass type on nutrient recovery and heavy metal removal from digested sludge by hydrothermal treatment".JOURNAL OF ENVIRONMENTAL MANAGEMENT 318.0(2022):115524.
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