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ASSESSMENT OF HEAVY METALS IN HYDROCHAR PRODUCED BY HYDROTHERMAL CARBONIZATION OF DAIRY MANURE

Frontiers of Agricultural Science and Engineering 2023, Volume 10, Issue 3,   Pages 437-447 doi: 10.15302/J-FASE-2023507

Abstract:

● Content of heavy metals in hydrochar varies considerably, from 50%

Keywords： heavy metals     dairy manure     hydrochar     hydrothermal carbonization     waste management    

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Co-pyrolysis of sludge and kaolin/zeolite in a rotary kiln: Analysis of stabilizing heavy metals

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 7, doi: 10.1007/s11783-021-1488-1

Abstract:

• Adding kaolin/zeolite promotes the formation of stable heavy metals

Keywords： Co-pyrolysis     Sewage sludge     Heavy metals     Rotary kiln     Immobilization mechanism    

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Predicting non-carcinogenic hazard quotients of heavy metals in pepper (

Marzieh Mokarram, Hamid Reza Pourghasemi, Huichun Zhang

Frontiers of Environmental Science & Engineering 2020, Volume 14, Issue 6, doi: 10.1007/s11783-020-1331-0

Abstract: Abstract • There was significant absorption of heavy metals by the pepper in contaminated soils. • TheGiven the tendency of heavy metals to accumulate in soil and plants, the purpose of this study was toFor this purpose, we measured the uptake of the four heavy metals by peppers grown in the heavy metalmetals.Therefore, in future studies, instead of examining the amount of heavy metals in plants by chemical analysis

Keywords： Heavy metals     Plants     Target Hazard Quotient (THQ)     Principal Component Analysis (PCA)     Random search     Electromagnetic    

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Effects of sulfur on variations in the chemical speciation of heavy metals from fly ash glass

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 10, doi: 10.1007/s11783-023-1728-7

Abstract:

● A higher sulfur content reduced the curing rate of Cr in glass.

Keywords： Dechlorinated fly ash     SO3     Heavy metal     Chemical speciation     Glass solidification    

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Human health ambient water quality criteria for 13 heavy metals and health risk assessment in Taihu Lake

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 4, doi: 10.1007/s11783-021-1475-6

Abstract:

• The concentrations of 13 heavy metals in Taihu Lake were analyzed.

Keywords： Heavy metals     Human health ambient water quality criteria     Taihu Lake     Health risk assessment     Contribution    

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Effect of lime on speciation of heavy metals during composting of water hyacinth

Jiwan SINGH,Ajay S. KALAMDHAD

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 1,   Pages 93-102 doi: 10.1007/s11783-014-0704-7

Abstract: However, the major disadvantage of water hyacinth composting is the high content of heavy metals in themetals.metals such as Zinc (Zn), Copper (Cu), Manganese (Mn), Iron (Fe), Lead (Pb), Nickel (Ni), Cadmium (Cdmetals were also studied during the process.Addition of lime was very effective for reduction of bioavailability of heavy metals during composting

Keywords： composting     lime     heavy metals     bioavailability factor     speciation    

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Re-evaluation of several heavy metals removal by natural limestones

Ali SDIRI,Samir BOUAZIZ

Frontiers of Chemical Science and Engineering 2014, Volume 8, Issue 4,   Pages 418-432 doi: 10.1007/s11705-014-1455-5

Abstract: Different treatment technologies have been efficiently applied to remove heavy metals from wastewaterOn the other hand, heavy metals are the most threatening groundwater contaminants because of their toxicityThis review discusses the use of natural geological materials for heavy metal removal in aqueous systemsThe removal of toxic metals may include different mechanisms (e.g., physisorption, chemisorptions, precipitationSorption of toxic metals (e.g., Pb, Cu, Cd, Zn, Cr, Hg, etc.) onto natural limestone involved precipitation

Keywords： limestone     heavy metals     sorption     wastewater     passive treatment technology    

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An overview of carbon nanotubes role in heavy metals removal from wastewater

Leila Ouni, Ali Ramazani, Saeid Taghavi Fardood

Frontiers of Chemical Science and Engineering 2019, Volume 13, Issue 2,   Pages 274-295 doi: 10.1007/s11705-018-1765-0

Abstract: Nowadays CNTs have been widely used for adsorption of heavy metals from water/wastewater due to theirpaper reviews some recent progress (from 2013 to 2018) in the application of CNTs for the adsorption of heavymetals in order to remove toxic pollutants from contaminated water.

Keywords： carbon nanotubes     heavy metals removal     water treatment    

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Joint effects of Penta-BDE and heavy metals on

Baohua TANG, Lingyan ZHU, Qixing ZHOU

Frontiers of Environmental Science & Engineering 2011, Volume 5, Issue 1,   Pages 99-110 doi: 10.1007/s11783-010-0260-8

Abstract: The joint toxicity of Penta-BDE (Pe-BDE) and heavy metals including cadmium and copper on ( ) was evaluatedThis may be attributed to the different toxicity mechanism between Pe-BDE and metals.

Keywords： polybrominated diphenyl ethers (PBDEs)     heavy metal     mixture toxicity     toxic units (TUs)     antioxidant enzyme    

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A 50-year sedimentary record of heavy metals and their chemical speciations in the Shuangtaizi River

Baolin LIU, Ke HU, Zhenglong JIANG, Fengge QU, Xin SU

Frontiers of Environmental Science & Engineering 2011, Volume 5, Issue 3,   Pages 435-444 doi: 10.1007/s11783-011-0352-0

Abstract: sediment cores collected from tidal flat located in the Shuangtaizi River estuary were analyzed for heavythese metals might be derived from same sources and/or affected by same geochemical processes.The dominant binding phases for most of the metals (except for Cd) are the residual.Pollution assessment on these heavy metals based on Index of Geoaccumulation ( ) also demonstrates thatmost of the metals are unpolluted.

Keywords： Shuangtaizi River estuary     sediment core     heavy metals     pollution    

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Efficient removal of heavy metals from electroplating wastewater using polymer ligands

Md. Lutfor RAHMAN,Shaheen M. SARKAR,Mashitah Mohd YUSOFF

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 2,   Pages 352-361 doi: 10.1007/s11783-015-0783-0

Abstract: Poly(hydroxamic acid)-poly(amidoxime) chelating ligands were synthesized from poly(methyl acrylate-co-acrylonitrile) grafted acacia cellulose for removing toxic metal ions from industrial wastewaters. These ligands showed higher adsorption capacity to copper (2.80 mmol?g ) at pH 6. In addition, sorption capacities to other metal ions such as iron, zinc, chromium, and nickel were also found high at pH 6. The metal ions sorption rate (t ) was very fast. The rate of adsorption of copper, iron, zinc, chromium, nickel, cobalt, cadmium and lead were 4, 5, 7, 5, 5, 8, 9 and 11 min, respectively. Therefore, these ligands have an advantage to the metal ions removal using the column technique. We have successfully investigated the known concentration of metal ions using various parameters, which is essential for designing a fixed bed column with ligands. The wastewater from electroplating plants used in this study, having chromium, zinc, nickel, copper and iron, etc. For chromium wastewater, ICP analysis showed that the Cr removal was 99.8% and other metal ions such as Cu, Ni, Fe, Zn, Cd, Pb, Co and Mn removal were 94.7%, 99.2%, 99.9%, 99.9%, 99.5%, 99.9%, 95.6% and 97.6%, respectively. In case of cyanide wastewater, the metal removal, especially Ni and Zn removal were 96.5 and 95.2% at higher initial concentration. For acid/alkali wastewater, metal ions removing for Cd, Cr and Fe were 99.2%, 99.5% and 99.9%, respectively. Overall, these ligands are useful for metal removal by column method from industrial wastewater especially plating wastewater.

Keywords： heavy metals     adsorption     wastewater     chelating ligands     plating industry    

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Reduced texaphyrin: A ratiometric optical sensor for heavy metals in aqueous solution

Harrison D. Root, Gregory Thiabaud, Jonathan L. Sessler

Frontiers of Chemical Science and Engineering 2020, Volume 14, Issue 1,   Pages 19-27 doi: 10.1007/s11705-019-1888-y

Abstract: We report here a water-soluble metal cation sensor system based on the as-prepared or reduced form of an expanded porphyrin, texaphyrin. Upon metal complexation, a change in the redox state of the ligand occurs that is accompanied by a color change from red to green. Although long employed for synthesis in organic media, we have now found that this complexation-driven redox behavior may be used to achieve the naked eye detectable colorimetric sensing of several number of less-common metal ions in aqueous media. Exposure to In(III), Hg(II), Cd(II), Mn(II), Bi(III), Co(II), and Pb(II) cations leads to a colorimetric response within 10 min. This process is selective for Hg(II) under conditions of competitive analysis. Furthermore, among the subset of response-producing cations, In(III) proved unique in giving rise to a ratiometric change in the ligand-based fluorescence features, including an overall increase in intensity. The cation selectivity observed in aqueous media stands in contrast to what is seen in organic solvents, where a wide range of texaphyrin metal complexes may be prepared. The formation of metal cation complexes under the present aqueous conditions was confirmed by reversed phase high-performance liquid chromatography, ultra-violet-visible absorption and fluorescence spectroscopies, and high-resolution mass spectrometry.

Keywords： texaphyrin     fluorescent sensor     ion-sensing     indium     mercury    

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Distribution and potential ecological risk of heavy metals in the typical eco-units of Haihe River Basin

Jingling LIU,Tao YANG,Qiuying CHEN,Feng LIU,Binbin WANG

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 1,   Pages 103-113 doi: 10.1007/s11783-014-0686-5

Abstract: The distribution and characteristics of seven heavy metals in sediments located in the typical ecologicalThe seven heavy metals, namely, Cd, Hg, As, Cr, Pb, Cu, and Zn, exhibited ecological risk levels in descending

Keywords： Haihe River Basin     ecological risk     eco-units     heavy metals    

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Leaching characteristics of heavy metals during cement stabilization of fly ash from municipal solid

LIANG Shunwen, JIANG Jianguo, ZHANG Yan, XU Xin

Frontiers of Environmental Science & Engineering 2008, Volume 2, Issue 3,   Pages 358-363 doi: 10.1007/s11783-008-0060-6

Abstract: The leaching characteristics of heavy metals in products of cement stabilization of fly ash from a municipalThe stabilization of heavy metals such as Cd, Pb, Cu, and Zn in fly ash from such incinerators was examinedThe results showed that as more additives were used, less heavy metals were leached except for Pb, whichWhen the hydration of cement was basically finished, stabilization of heavy metals did not vary after

Keywords： heavy     national standard     environmental     leachate     liquor    

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Occurrence and health risk assessment of trace heavy metals via groundwater in Shizhuyuan Polymetallic

Bingbing XU,Qiujin XU,Cunzhen LIANG,Li LI,Lijia JIANG

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 3,   Pages 482-493 doi: 10.1007/s11783-014-0675-8

Abstract: In particular, this study focused on the exposure and the health risk assessment of trace heavy metalanalysis and fuzzy comprehensive method were employed to reveal the distribution characteristics of heavy

Keywords： groundwater     heavy metal     health risk assessment     mine area    

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Title Author Date Type Operation

ASSESSMENT OF HEAVY METALS IN HYDROCHAR PRODUCED BY HYDROTHERMAL CARBONIZATION OF DAIRY MANURE

Journal Article

Co-pyrolysis of sludge and kaolin/zeolite in a rotary kiln: Analysis of stabilizing heavy metals

Journal Article

Predicting non-carcinogenic hazard quotients of heavy metals in pepper (

Marzieh Mokarram, Hamid Reza Pourghasemi, Huichun Zhang

Journal Article

Effects of sulfur on variations in the chemical speciation of heavy metals from fly ash glass

Journal Article

Human health ambient water quality criteria for 13 heavy metals and health risk assessment in Taihu Lake

Journal Article

Effect of lime on speciation of heavy metals during composting of water hyacinth

Jiwan SINGH,Ajay S. KALAMDHAD

Journal Article

Re-evaluation of several heavy metals removal by natural limestones

Ali SDIRI,Samir BOUAZIZ

Journal Article

An overview of carbon nanotubes role in heavy metals removal from wastewater

Leila Ouni, Ali Ramazani, Saeid Taghavi Fardood

Journal Article

Joint effects of Penta-BDE and heavy metals on

Baohua TANG, Lingyan ZHU, Qixing ZHOU

Journal Article

A 50-year sedimentary record of heavy metals and their chemical speciations in the Shuangtaizi River

Baolin LIU, Ke HU, Zhenglong JIANG, Fengge QU, Xin SU

Journal Article

Efficient removal of heavy metals from electroplating wastewater using polymer ligands

Md. Lutfor RAHMAN,Shaheen M. SARKAR,Mashitah Mohd YUSOFF

Journal Article

Reduced texaphyrin: A ratiometric optical sensor for heavy metals in aqueous solution

Harrison D. Root, Gregory Thiabaud, Jonathan L. Sessler

Journal Article

Distribution and potential ecological risk of heavy metals in the typical eco-units of Haihe River Basin

Jingling LIU,Tao YANG,Qiuying CHEN,Feng LIU,Binbin WANG

Journal Article

Leaching characteristics of heavy metals during cement stabilization of fly ash from municipal solid

LIANG Shunwen, JIANG Jianguo, ZHANG Yan, XU Xin

Journal Article

Occurrence and health risk assessment of trace heavy metals via groundwater in Shizhuyuan Polymetallic

Bingbing XU,Qiujin XU,Cunzhen LIANG,Li LI,Lijia JIANG

Journal Article