Total concentrations and chemical speciation of heavy metals in liquefaction residues of sewage sludge

Yuan, Xingzhong; Huang, Huajun; Zeng, Guangming; Li, Hui; Wang, Jingyu; Zhou, Cong; Zhu, Huina; Pei, Xiaokai; Liu, Zhifeng; Liu, Zhantao

doi:10.1016/j.biortech.2010.12.055

Cited by 245 publications

(80 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The species (such as Euonymus japonicus, Pittosporum Tobira and Cupressus Blue Ice) following the pattern of high root retention and low risk after transplantation contributes to the feasibility of this technique for soil cleansing. In sewage sludgetreated soils, heavy metals liquefaction transformed them into the relatively stable heavy metal fractions (oxidizable and residual fractions) leading to decreased bioavailability and eco-toxicity of heavy metals (Yuan et al 2011) in the soil-water-plant ecosystem.…”

Section: Phytoextraction and Phytostabilizationmentioning

confidence: 99%

Biotechnological advances in bioremediation of heavy metals contaminated ecosystems: an overview with special reference to phytoremediation

Mani

Kumar

2013

Int. J. Environ. Sci. Technol.

500

137

View full text Add to dashboard Cite

The ability of heavy metals bioaccumulation to cause toxicity in biological systems-human, animals, microorganisms and plants-is an important issue for environmental health and safety. Recent biotechnological approaches for bioremediation include biomineralization (mineral synthesis by living organisms or biomaterials), biosorption (dead microbial and renewable agricultural biomass), phytostabilization (immobilization in plant roots), hyperaccumulation (exceptional metal concentration in plant shoots), dendroremediation (growing trees in polluted soils), biostimulation (stimulating living microbial population), rhizoremediation (plant and microbe), mycoremediation (stimulating living fungi/mycelial ultrafiltration), cyanoremediation (stimulating algal mass for remediation) and genoremediation (stimulating gene for remediation process). The adequate restoration of the environment requires cooperation, integration and assimilation of such biotechnological advances along with traditional and ethical wisdom to unravel the mystery of nature in the emerging field of bioremediation. This review highlights better understanding of the problems associated with the toxicity of heavy metals to the contaminated ecosystems and their viable, sustainable and eco-friendly bioremediation technologies, especially the mechanisms of phytoremediation of heavy metals along with some case studies in India and abroad. However, the challenges (biosafety assessment and genetic pollution) involved in adopting the new initiatives for cleaning-up the heavy metals-contaminated ecosystems from both ecological and greener point of view must not be ignored.

show abstract

Section: Phytoextraction and Phytostabilizationmentioning

confidence: 99%

Biotechnological advances in bioremediation of heavy metals contaminated ecosystems: an overview with special reference to phytoremediation

Mani

Kumar

2013

Int. J. Environ. Sci. Technol.

500

137

View full text Add to dashboard Cite

show abstract

“…It was reported that the toxicity and leaching characteristics of HMs could be greatly changed after thermal treatment at 300-400 (Li et al, 2012;Yuan et al, 2011). Up to now, the related research works were conducted at temperatures higher than 300 resulting in higher energy consumption and lower organic matter content left in the sludge.…”

Section: Introductionmentioning

confidence: 99%

Immobilization of heavy metals in sewage sludge by using subcritical water technology

Shi

Liu

Ding

et al. 2013

Bioresource Technology

199

View full text Add to dashboard Cite

Heavy metals (HMs) immobilization in sewage sludge was investigated by using subcritical water technology (SCWT) in this study. The characteristics of sludge and toxicity of HMs were analyzed after SCWT process. The results showed that besides large reduction in sludge volume, SCWT had some positive effect on HMs dissolution into liquid phase, while the majority of HMs was still accumulated in solid phase. The direct toxicity and bioavailability of HMs in sludge was greatly decreased with no toxicity fractions of HMs highly increased. Pb was always at low risk level and the risk of other HMs was greatly reduced from low risk to no risk after SCWT treatment. Moreover, the leaching toxicity of HMs declined after SCWT and the best result was obtained at 280 with the metal concentrations in leachate decreased by 97.46%, 93.91%, 86.14%, 73.67%, 71.93% and 10.71% for Cu, Cd, Zn, Cr, Ni and Pb, respectively.

show abstract

“…TS this study (site 1), GS1 (Cai et al 2007) and GS2 (C.S. Zhang et al 2011) sewage sludge of Guangzhou, FS sewage sludge of Foshan (Cai et al 2007), BS sewage sludges of Beijing (Dai et al 2007), CS sewage sludge of Changsha (Yuan et al 2011), MS sewage sludge of China (T. B. Chen et al 2003), GC and GHP sediment from the Pearl River , ER and WR sediments from East River and West River (G. H. Zhou et al 2013), ZE1 (Woods et al 2012) and ZE2 (Ip et al 2007) sediments from Pearl River Estuary.…”

Section: Enrichment Factormentioning

confidence: 79%

“…These contaminants rapidly decrease as the distance to the outlet increases. A lot of researches have also reported high concentration of heavy metals in sewage sludge from different wastewater treatment plants (Yuan et al 2011;Filipovic et al 2013). Another possible reason for elevated trace metals in core 1 is the surreptitiously dumping of sludge into the Pearl River as reported by a local newspaper (NFDaily 2012), even though it is forbidden by Chinese law.…”

Section: Geochemistry Of Trace Elements and Mn In Sedimentsmentioning

confidence: 99%

Assessment of trace element contamination in sediment cores from the Pearl River and estuary, South China: geochemical and multivariate analysis approaches

Yang

Liu

Chen

et al. 2014

Environ Monit Assess

View full text Add to dashboard Cite

Twenty-four major and trace elements and the mineralogical composition of four sediment cores along the Pearl River and estuary were analyzed using ICP-AES, ICP-MS, and X-ray diffraction (XRD) to evaluate contamination levels. The dominant minerals were quartz, kaolinite, and illite, followed by montmorillonite and feldspars, while small amounts of halite and calcite were also observed in a few samples. Cluster analysis (CA) and principal component analysis (PCA) were performed to identify the element sources. The highest metal concentrations were found at Huangpu, primarily due to wastewater treatment plant discharge and/or the surreptitious dumping of sludge, and these data differed from those of other sources. Excluding the data from Huangpu, the PCA showed that most elements could be considered as lithogenic; few elements are the combination of lithogenic and anthropogenic sources. An antagonistic relationship between the anthropogenic source metals (K, Ba, Zn, Pb, Cd, Ag, Tl, and U) and marine source metals (Na, Mg, Ti, V, and Ca) was observed. The resulting normalized Al enrichment factor (EF) indicated very high or significant pollution of Cd, Ag, Cu, Zn, Mo, and Pb at Huangpu, which may cause serious environmental effects. Conflicting results between the PCA and EF can be attributed to the background values used, indicating that background values must be selected carefully.

show abstract

Total concentrations and chemical speciation of heavy metals in liquefaction residues of sewage sludge

Cited by 245 publications

References 29 publications

Biotechnological advances in bioremediation of heavy metals contaminated ecosystems: an overview with special reference to phytoremediation

Biotechnological advances in bioremediation of heavy metals contaminated ecosystems: an overview with special reference to phytoremediation

Immobilization of heavy metals in sewage sludge by using subcritical water technology

Assessment of trace element contamination in sediment cores from the Pearl River and estuary, South China: geochemical and multivariate analysis approaches

Contact Info

Product

Resources

About