Toxicity of ferric chloride sludge to aquatic organisms

Sotero-Santos, Rosana B.; Rocha, Odete; Povinelli, Jurandyr

doi:10.1016/j.chemosphere.2007.02.049

Cited by 67 publications

(24 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Because it is a native Brazilian species (Trivinho-Strixino and Strixino, 1982), C. xanthus is of great ecological and regional relevance and its larval stage has been used in toxicity tests with sediments in Brazil (Dornfeld et al, 2006;Sotero-Santos et al, 2007). Its sensitivity has also been adequately studied .…”

Section: Acute Toxicity Assays: Chironomus Xanthus Rempel 1939mentioning

confidence: 99%

Assessment of the acute toxicity of eutrophic sediments after the addition of calcium nitrate (Ibirité reservoir, Minas Gerais-SE Brazil): initial laboratory experiments

et al. 2011

View full text Add to dashboard Cite

This study evaluated the acute toxicity of sediment in a eutrophic reservoir after remediation with a calcium nitrate solution to retain phosphorus. The study involved microcosms of surface sediments and water from the sedimentwater interface in the Ibirité reservoir. This reservoir, located in the vicinity of metropolitan Belo Horizonte (Minas Gerais, SE Brazil), is a water body that receives treated effluents from an oil refinery (REGAP-Petrobras), as well as high loads of untreated urban effluents from the city of Ibirité and surrounding areas and industrial effluents from a major industrial park. Incubation times of the treatment experiments were: t = 0, t = 5, t = 10, t = 25, t = 50, t = 85 and t = 135 days. One control microcosm and three treated microcosms were analysed in each time interval. Acute toxicity of water samples was assessed with Ceriodaphnia silvestrii Daday, 1902 and that of bulk sediment samples with Chironomus xanthus Rempel, 1939. Toxicity tests were carried out concomitantly with chemical analyses of dissolved inorganic nitrogen species (ammonia, nitrate and nitrite), sulfate and metals in the water samples of the microcosms. Acid volatile sulfides (AVS), simultaneously extracted metal (SEM) and potentially bioavailable metal were analyzed in bulk sediment samples. Neither of the tested organisms showed toxicity in the control microcosm samples. The water column of the treated microcosm showed toxicity to C. silvestrii, starting at t = 10 days, while the sediment pore water toxicity started at t = 0 day. However, toxicity was found to decline from t = 85 days to t = 135 days. Sediments showed toxicity to C. xanthus during the entire experiment, except at the longest incubation time (t = 135 days). The overall results indicate that nitrate, which reached concentrations exceeding 1,200 mg N-NO 3 -L -1 in the sediment pore water of the treated microcosms, was most probably responsible for the toxicity of the samples. Although the calcium nitrate technology proved effective in retaining phosphorus, promoting sediment oxidation via denitrification, from the ecotoxicological standpoint and under the experimental conditions of this study, the application of nitrate for remediation of the sediments in the Ibirité reservoir did not prove effective up to a period of 135 days of incubation. However, we presume that after longer periods of incubation, treated sediments may recover their ability to sustain a benthic community. More advanced experiments are planned involving longer incubation times, thus extending the denitrification process, which may lead to a higher phosphorus retention capacity and to more complete abatement of sediment toxicity. Keywords

show abstract

Section: Acute Toxicity Assays: Chironomus Xanthus Rempel 1939mentioning

confidence: 99%

Assessment of the acute toxicity of eutrophic sediments after the addition of calcium nitrate (Ibirité reservoir, Minas Gerais-SE Brazil): initial laboratory experiments

et al. 2011

View full text Add to dashboard Cite

show abstract

“…DWTS volumes strongly depend upon the unit operations involved in the water treatment and the raw water quality. DWTS mainly consists of organic and inorganic compounds in solid, liquid and gaseous forms, with variable physical, chemical, and biological characteristics [1,2]. WWTS is a mixture of exhausted biosolid generated in the treatment of the organic substances of municipal sewage along with the inorganic substances such as sand and metal oxides.…”

Section: Introductionmentioning

confidence: 99%

Ceramsite obtained from water and wastewater sludge and its characteristics affected by Fe2O3, CaO, and MgO

Zou

2009

Journal of Hazardous Materials

101

View full text Add to dashboard Cite

“…1b). It has been suggested that equilibrium adsorption of Cu(II) can be achieved within 60 min using an adsorbent via molecular imprint technique [4]. During our preparation, the target ion was also incorporated into the adsorbent, under which condition the adsorbent could form coordinated geometry for fast adsorption based on the charges and sizes of the target ion.…”

Section: Adsorption Of Copper(ii) Ionmentioning

confidence: 99%

“…Fe ions are discharged in a large amount by steel factory, copper etching solution, and paint industries, etc. They may be not only harmful to aquatic organisms [4] but also to human health. The fast adsorption kinetics made our adsorbent particularly useful for removal of Fe ions from concentrated waste water quickly.…”

Section: Adsorption Of Ferrous Ionmentioning

confidence: 99%

Fast removal of concentrated heavy metal ions using an alginate-poly(ethylene imine) biological adsorbent

Ye¹,

XSong²

2017

Proceedings of the 2017 5th International Conference on Mechatronics, Materials, Chemistry and Computer Engineering (ICMMCCE 20

View full text Add to dashboard Cite

Abstract. Accumulation of heavy metals in aqueous environment has raised increasing concerns for public health. An alginate based biodegradable adsorbent was successfully developed for fast removal of heavy metals, and could adsorb 99.4% Cu(II) in 10 min when immersed in 10 mM Cu(II). Surface characteristics exhibited 25.65 wt% occupancy of Cu(II), further demonstrating the high adsorption capacity of the adsorbent. The adsorbent can be regenerated using either 10 wt% of Na 2 CO 3 or 0.1 M HCl. Reusability under each condition did not show decrease. Adsorption of Fe(II) was also tested. The adsorbent showed 95% removal of Fe(II) in just 2 min. These results demonstrate successful design and preparation of a novel biodegradable adsorbent with a matrix of properties suitable for application in fast removal of heavily polluted waste water containing a high content of metal ions.

show abstract

Toxicity of ferric chloride sludge to aquatic organisms

Cited by 67 publications

References 12 publications

Assessment of the acute toxicity of eutrophic sediments after the addition of calcium nitrate (Ibirité reservoir, Minas Gerais-SE Brazil): initial laboratory experiments

Assessment of the acute toxicity of eutrophic sediments after the addition of calcium nitrate (Ibirité reservoir, Minas Gerais-SE Brazil): initial laboratory experiments

Ceramsite obtained from water and wastewater sludge and its characteristics affected by Fe2O3, CaO, and MgO

Fast removal of concentrated heavy metal ions using an alginate-poly(ethylene imine) biological adsorbent

Contact Info

Product

Resources

About