Sludge production from municipal wastewater treatment in sewage treatment plant

Demırbas, Ayhan; Edris, Gaber; Alalayah, Walid M.

doi:10.1080/15567036.2017.1283551

Cited by 114 publications

(45 citation statements)

References 31 publications

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“…In a sewage treatment process, crude sewage sludge is obtained and then subjected to stabilization and hygienization (Arthurson 2008). Physical, chemical, and biological properties of sewage sludge from industrial plants depend greatly on the used production technology, used raw materials, the generated final product, as well as on the used water (Demirbas et al 2017). The determined properties of the sewage sludge have a substantial effect on the direction of their management (Grobelak et al 2017).…”

Section: Discussionmentioning

confidence: 99%

The effect of cellulose production waste and municipal sewage sludge on biomass and heavy metal uptake by a plant mixture

Antonkiewicz

Pełka

Bik-Małodzińska

et al. 2018

Environ Sci Pollut Res

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Environmental management of cellulose production waste and municipal sewage sludge appears to be substantiated due to various physicochemical properties of these wastes. The aim of the conducted research was to determine the effect of cellulose production waste and sewage sludge on yielding and heavy metal uptake by a plant mixture. The research was conducted under field experiment conditions, determining the fertilizer value of these wastes in the environmental aspect. The research was carried out in the years 2013-2016. Species composition of the plant mixture was adjusted to habitat conditions. It was established that, as compared with the cellulose production waste, the municipal sewage sludge used in the experiment had a higher content of macroelements. The content of heavy metals in the studied waste did not exceed the limits that condition their use in agriculture and reclamation. Applying only the cellulose production waste did not significantly decrease the yield of the plants. Municipal sewage sludge showed the highest yield-forming effect. Mixing the above-mentioned wastes and their application to soil had a significant effect on the increase in the plant mixture yield. The waste applied to soil also increased the content of Cr, Cd, Pb, Cu, and Zn in the plant mix. The level of heavy metal content in the plant mix did not exclude this biomass from being used for fodder or reclamation purposes. The cellulose production waste and municipal sewage sludge increased the heavy metal uptake by the plant mixture. The plant biomass extracted heavy metals from the sewage sludge more intensively than from the cellulose production waste. Among the analyzed heavy metals, the highest phytoremediation was recorded for Ni (30%), followed by Cd (20%), Cr (15%), Pb (10%), and the lowest for Cu (9%) and Zn (8%). Application of the cellulose production waste and sewage sludge to soil also increased the content of the studied heavy metals in soil. However, it did not cause deterioration of soil quality standards. Heterogeneity in the chemical composition of the wastes confirms that each batch intended to be used for environmental management should be subjected to chemical control.

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Section: Discussionmentioning

confidence: 99%

The effect of cellulose production waste and municipal sewage sludge on biomass and heavy metal uptake by a plant mixture

Antonkiewicz

Pełka

Bik-Małodzińska

et al. 2018

Environ Sci Pollut Res

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“…Slurry and sludge are characterized as being soft, wet, and thick. They may consist of a wide range of harmful substances such as dioxins and furans, polychlorinated biphenyls, organochlorine pesticides, absorbed and extracted chlorine derivatives, polycyclic aromatic hydrocarbons, phenols and their derivatives, phthalate, heavy metals, concentrated organic matter, nitrogen, inorganic salts, bacteria, O/G (Demirbas et al, 2017;Woodruff and Macnamara, 2013).…”

Section: Mercury Trend Across Environmental Mediamentioning

confidence: 99%

Mercury contamination of soil and water media from different illegal artisanal small-scale gold mining operations (galamsey)

Mantey¹,

Nyarko

Owusu‐Nimo

et al. 2020

Heliyon

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Environmental media contamination with mercury, because of illegal artisanal small-scale gold mining (popularly called galamsey), is a major concern in Ghana; yet specific details as to how such contaminations are influenced or distributed across different galamsey operations have been lacking. We monitored mercury levels across nine different galamsey operations (Washing Board, Washing Plant, Anwona, Dig and Wash, Dredging, Underground Abandoned Shaft, Underground Sample Pit, Chamfi and Mill House) in three hotspot assemblies (Tarkwa Nsuaem, Amenfi East and Prestea Huni Valley) of the Western Region of Ghana. Triplicate samples each of background soil, surface water/drainage, slurry/sludge and galamsey waste materials (totaling 160) were obtained and analyzed using Atomic Absorption Spectrophotometer (AAS) to determine total Hg concentrations. From the comparison of mean ranked concentration of mercury, using the Kruskal-Wallis Test, it was realized that the observed differences in ranking was significant for all four environmental media considered. Thus, the poor handling, usage and disposal of mercury from the different galamsey activities did result in elevation of harmful quantities of mercury into the environment. Overall, the highest median value obtained for mercury was recorded at the Mill House galamsey sites and within slurry/sludge medium. This was followed by Chamfi, Washing Board, Washing Plant, Anwona, Dig and Wash and Dredging in descending order, with the Underground Abandoned Shaft and Underground Sample Pit galamsey types recording values below detection limit. In terms of their contribution to mercury contamination to the environment, Mill House, Chamfi, Anwona, Washing Board and Washing Plant galamsey types recorded the highest mean rankings. Overall, key priority information required for influencing reclamation and cleanup policy decisions for mercury, for the many affected wastelands across the country, can be derived from this paper.

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“…The characterization of scum reveals 29.3% w/w oil content and 12.5% w/w free fatty acid content in the extracted oil, and the oil was dark brown in color, with density greater than 1. The high concentration of oil and free fatty acids in scum was due to the presence of a mixture of FOG, cellulose fibers, hairs and other light solids (Demirbas et al, 2017). Moreover, the density higher than 1 may be due to contamination of the oil with organic matter from the scum solids.…”

Section: Resultsmentioning

confidence: 99%

“…However, the cost of sludge management is one of the critical challenges for the wastewater industry. Therefore, an extensive approach is necessary to decrease the sludge management cost and GHG emissions (Demirbas et al, 2017).…”

Section: Introduction Q1mentioning

confidence: 99%

Oil extraction from scum and ex situ transesterification to biodiesel

2019

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The aim of this study is to investigate the extraction of oil from scum obtained from a municipal wastewater treatment plant. Various parameters such as solvent volume, temperature, agitation and moisture content were optimized to maximize the oil extraction efficiency using freeze-dried scum. The oil extraction efficiency was compared for each parameter using hexane and petroleum diesel as a solvent. The optimum physical parameters for oil extraction using freeze-dried scum were 75 g solids/L solvent, temperature 60 C, agitation 300 rpm for 60 min, and maximum oil extraction efficiency of 100 and 94.3% w/w was obtained using hexane and petroleum diesel, respectively. The obtained results using 1 g of scum were further validated using 1 kg of wet scum under optimized conditions, and oil extraction efficiency of 94.1 ± 1.3 and 91.3 ± 4.2% w/w was obtained using hexane and petroleum diesel, respectively. Furthermore, ex situ transesterification was performed, and results showed that scum had a higher neutral lipid. In brief, scum is a potential feedstock for the production of biodiesel, and more work on this must be done in future.

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Sludge production from municipal wastewater treatment in sewage treatment plant

Cited by 114 publications

References 31 publications

The effect of cellulose production waste and municipal sewage sludge on biomass and heavy metal uptake by a plant mixture

The effect of cellulose production waste and municipal sewage sludge on biomass and heavy metal uptake by a plant mixture

Mercury contamination of soil and water media from different illegal artisanal small-scale gold mining operations (galamsey)

Oil extraction from scum and ex situ transesterification to biodiesel

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