scholarly journals The Impact of Combustion Technology of Sewage Sludge on Mobility of Heavy Metals in Sewage Sludge Ash/Wpływ Technologii Spalania Komunalnych Osadów Ściekowych Na Mobilność Metali Ciężkich Z Popiołów

2014 ◽  
Vol 21 (3) ◽  
pp. 465-475 ◽  
Author(s):  
Jolanta Latosińska ◽  
Jarosław Gawdzik
Keyword(s):  
Heavy Metals ◽  
Sewage Sludge ◽  
Significant Influence ◽  
Extraction Procedure ◽  
Chemical Extraction ◽  
Sewage Sludge Ash ◽  
Sequential Chemical Extraction ◽  
Combustion Technology ◽  
Sludge Ash ◽  
The Impact

Abstract Sewage sludge ashes from grate furnace and fluidized bed furnace were used in this research. This research was carried out to investigate the impact of combustion technology on sewage sludge speciation of heavy metals from sewage sludge ash. This was achieved by conducting a sequential chemical extraction procedure Community Bureau Reference (BCR). This study indicated that heavy metals in sewage sludge ash were dominant in immobile fractions. Moreover, it was stated that the combustion technology of sewage sludge did not have a significant influence on the mobility of heavy metals in ashes

Kinetic study of heavy metals Cu and Zn removal during sewage sludge ash calcination in air and N 2 atmospheres

2018 ◽  
Vol 347 ◽  
pp. 227-232 ◽  
Author(s):  
Rundong Li ◽  
Zhenyu Zhai ◽  
Yanlong Li ◽  
Tianhua Yang ◽  
Yang Chen
Keyword(s):  
Heavy Metals ◽  
Sewage Sludge ◽  
Kinetic Study ◽  
Sewage Sludge Ash ◽  
Sludge Ash ◽  
Cu And Zn

scholarly journals Heavy metals Fractionation in Bagmati River Sediments, Nepal

2016 ◽  
Vol 9 (1) ◽  
pp. 119-128
Author(s):  
Sadhana Pradhanang Kayastha
Keyword(s):  
Heavy Metals ◽  
Total Concentration ◽  
River Sediments ◽  
Extraction Procedure ◽  
Absorption Spectrometry ◽  
Chemical Extraction ◽  
Geochemical Background ◽  
Sediment Samples ◽  
Sequential Chemical Extraction ◽  
Bagmati River

The aim of this work was speciation of heavy metals on the level of the geochemical background; in bottom sediments of the Bagmati River in Kathmandu valley. The distribution and accumulation of heavy metals in the sediments of the Bagmati River were investigated. Sediment samples from six locations were collected and characterized for metals content (cadmium, lead, copper and zinc). The determination of extractable heavy metals such as, Cd, Pb, Cu and Zn, in the sediment samples was carried out by atomic absorption spectrometry. The study has been conducted using five steps sequential extraction procedure described by tessier. Apart from total concentration, the distribution of the above metals into five fractions: exchangeable, bound to carbonates, bound to Fe-Mn oxides, bound to organic matter, and residual, was studied by means of an analytical procedure involving sequential chemical extraction. The result obtained showed total metal concentration to be in the range of Cd 0.89-2.29 mg/kg; Pb 57.58-221mg/kg; Cu 52.2 -198.17 mg/kg and 78.23-362.90 mg/kg in all the areas studied. The fractionated toxic metals like Cd, and Pb were observed to be in the range of 15-36%, and 11- 29%, respectively, in mobile or bio-available fractions of sediments. This potentially mobile fraction could pose a serious threat, with respect to contamination of waterways and aquatic environment.Journal of Hydrology and Meteorology, Vol. 9(1) 2015, p.119-128

Electrodialytic Separation of Phosphorus and Heavy Metals from Two Types of Sewage Sludge Ash

2014 ◽  
Vol 49 (12) ◽  
pp. 1910-1920 ◽  
Author(s):  
Lisbeth M. Ottosen ◽  
Pernille E. Jensen ◽  
Gunvor M. Kirkelund
Keyword(s):  
Heavy Metals ◽  
Sewage Sludge ◽  
Sewage Sludge Ash ◽  
Sludge Ash

scholarly journals Assessment of heavy metal removal efficiencies by naturally fermented and a. niger fermented pineapple wastes from contaminated sewage sludge

2007 ◽  
pp. 429-438
Author(s):  
Dominica del Mundo Dacera ◽  
Sandhya Babel
Keyword(s):  
Citric Acid ◽  
Sewage Sludge ◽  
Metal Removal ◽  
Heavy Metal Removal ◽  
Extraction Procedure ◽  
Extraction Process ◽  
Chemical Extraction ◽  
Sequential Chemical Extraction ◽  
Removal Efficiencies

Heavy metals in sewage sludge can pose a long term environmental risk due to their toxicity,non-biodegradability and consequent persistence, This study assessed the efficiencies ofvarious organic extractants such as naturally fermented and A�pergillus niger (A. niger)fermented raw liquid from pineapple wastes, in the chemical extraction process, to extract Cr,Cu, Pb, Ni and Zn, from anaerobically digested sewage sludge in Thailand. Pineapple wastesare a good source of sugar and protein and have been utilized experimentally in theproduction of citric acid by fennentation with the fungus A. niger. Comparison of theextraction efficiencies of these extractants with commercial citric acid was also investigated attwo hours leaching time and pH 3 and greater. Results of the study revealed that at pHapproaching 4, A. niger fermented liquid seemed to exhibit the best removal efficiency forpractically all metals studied, attaining as much as 72% removal for Zn, 70% for Ni, 50% forCr and 37% for Cu, although effectivity of removal seemed to be less apparent for Pb. Themost readily solubilized metal seemed to be Zn with the most removal of 92% attained bynaturally fermented raw liquid, The effectivity of removal by A. niger fem1ented liquid maybe due to the presence of citric acid and other carboxylic acids as confirmed by the HPLC andIR studies of the fem1ented liquid, Moreover, variation in metal removal efficiencies may beattributed to the fonns of metals in the sludge, as evidenced by chemical speciation studiesusing sequential chemical extraction procedure, with metals predominantly in theexchangeable and oxidizable phases showing ease of leachability,

scholarly journals Phosphorus Recovery from Sewage Sludge Ash Based on Cradle-to-Cradle Approach—Mini-Review

Minerals ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 985
Author(s):  
Anna Jama-Rodzeńska ◽  
Józef Sowiński ◽  
Jacek A. Koziel ◽  
Andrzej Białowiec
Keyword(s):  
Sewage Sludge ◽  
Phosphorus Recovery ◽  
Chemical Extraction ◽  
Future Research ◽  
Wastewater Treatment Process ◽  
Sewage Sludge Ash ◽  
Treatment Technologies ◽  
Cradle To Cradle ◽  
Pre Treatment ◽  
Sludge Ash

The wastewater treatment process generates large amounts of P-rich organic waste (sewage sludge (SS)). The direct application of SS in agriculture, being controversial, is gradually being replaced by incineration, leading to the concentration of both P and heavy metals in the solid residual-sewage sludge ash (SSA). The novel closed-loop, cradle-to-cradle (C2C) approach leads to maintaining P production at current levels and counteracts its depletion in the future. The aim of this review is the presentation of the implementation of the C2C approach for P recovery. The paper focuses on steps that comprise P C2C, starting from the SS properties, being a derivative of wastewater type and treatment processes, to SS pre-treatment and finally leading to certified P-fertilizers production from SSA by application thermochemical or wet chemical extraction technologies. Examples of SSA treatment technologies and the final products are provided. It has been summarized that future research should focus on the production of SSA-based fertilizers aligning with the C2C concept and determining its effect on the various agriculture and horticulture crops.

scholarly journals Selenium Removal from Sewage Sludge Ash by Chemical Extraction and Microbial Reduction

2014 ◽  
Vol 43 (2) ◽  
pp. 96-101 ◽  
Author(s):  
Satoshi SODA ◽  
Ai HASEGAWA ◽  
Michihiko IKE ◽  
Hiroki FUJIHIRA ◽  
Muneharu FUJIKAWA
Keyword(s):  
Sewage Sludge ◽  
Microbial Reduction ◽  
Chemical Extraction ◽  
Sewage Sludge Ash ◽  
Selenium Removal ◽  
Sludge Ash

scholarly journals Impact of Mining Dump on the Accumulation and Mobility of Metals in the Bytomka River Sediments

2014 ◽  
Vol 40 (2) ◽  
pp. 3-19 ◽  
Author(s):  
Magdalena Jabłońska-Czapla ◽  
Sebastian Szopa ◽  
Czesława Rosik-Dulewska
Keyword(s):  
Heavy Metals ◽  
Ion Exchange ◽  
Bottom Sediments ◽  
River Sediments ◽  
Extraction Procedure ◽  
Residual Fraction ◽  
Chemical Extraction ◽  
Coal Waste ◽  
Waste Dump ◽  
Sequential Chemical Extraction

Abstract The research aim was to determine the long-term impact of the mine waste stored at the coal waste dump Hałda Ruda on the content of heavy metals in the bottom sediments of the Bytomka River. It is a watercourse flowing along this coal waste dump and has been under its influence for over fifty years. The research also attempted to determine the seasonality of changes (2 years) and mobility of selected elements. The article presents total contents of Cr, Mn, Ni, Cu, Zn, As, Cd and Pb in the bottom sediments collected from the Bytomka River. It also focuses on the distribution of these elements in particular geochemical fractions determined with the Tessier's sequential chemical extraction procedure. Total element contents were determined with an EDPXRF (Energy Dispersive X-ray Fluorescence) technique. The extractants of particular Tessier's fractions were determined quantitatively with an ICP-MS (Inductively Coupled Plasma Mass Spectrometry) spectrometer. The research results show that the stored waste significantly influences the contents of heavy metals in the Bytomka River bottom sediments. The lowest concentration of heavy metals was observed at the B1 spot (above the dump), while the highest one was measured at the B3 spot (below the dump). Sequential chemical extraction of the bottom sediments indicates that the Zn content in the ion-exchange and carbonate fractions diminished within a year. Nevertheless, Zn bound to Fe and Mn oxides acted in the opposite way. Mn, Zn and Pb are the most dangerous elements from the viewpoint of environmental hazards, as their total concentrations were high. Moreover, their high contents were observed in the most mobile (ion-exchange and carbonate) fractions. Extremely toxic Cd was bound to the oxide fraction to the largest extent. Cu was mainly bound to the organic fraction while environmentally hazardous Cr was bound to the residual fraction.

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