The effect of stabilization on the utilization of municipal sewage sludge as a soil amendment

Černe, Marko; Palčić, Igor; Pasković, Igor; Major, Nikola; Romić, Marija; Filipović, Vilim; Igrc, Marina Diana; Perčin, Aleksandra; Ban, Smiljana Goreta; Zorko, Benjamin; Vodenik, B.; Cindro, Denis Glavič; Milačić, Radmila; Heath, David

doi:10.1016/j.wasman.2019.05.032

Cited by 50 publications

(23 citation statements)

References 62 publications

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“…This method is widely promoted both in scientific/technical literature and in national/international legal acts [5]. Unfortunately, in addition to its soil-building and fertilizing properties, MSS is also malodorous and rich in organic compounds susceptible to putrification, which often limits its direct use for agricultural, natural, and reclamation purposes [6,7]. In many cases, MSS poses a sanitary threat due to high concentrations of pathogenic and parasitic organisms [8].…”

Section: Introductionmentioning

confidence: 99%

The Effect of Static Magnetic Field on Methanogenesis in the Anaerobic Digestion of Municipal Sewage Sludge

2021

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The present study aimed to determine the effect of a 17.6 mT static magnetic field (SMF) on the efficiency of anaerobic digestion (AD) of municipal sewage sludge (MSS). The SMF had a significant impact on methane (CH4) production efficiency, the levels of fermentation rate (ηFMSS) vs. removal rate (ηVS), and the structure of the anaerobic bacteria consortium, but it did not affect cumulative biogas production. The highest CH4 yield (431 ± 22 dm3CH4/kgVS) and the highest methane content in the biogas (66.1% ± 1.9%) were found in the variant in which the SMF exposure time was 144 min/day. This variant also produced the highest ηFMSS and ηVS values, reaching 73.8% ± 2.3% and ηVS 36.9% ± 1.6%, respectively. Longer anaerobic sludge retention time in the SMF area significantly decreased AD efficiency and caused a significant reduction in the number of methanogens in the anaerobic bacteria community. The lowest values were observed for SMF exposure time of 432 min/day, which produced only 54.8 ± 1.9% CH4 in the biogas. A pronounced reduction was recorded in the Archaea (ARC915) and Methanosaeta (MX825) populations in the anaerobic sludge, i.e., to 20% ± 11% and 6% ± 2%, respectively.

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Section: Introductionmentioning

confidence: 99%

The Effect of Static Magnetic Field on Methanogenesis in the Anaerobic Digestion of Municipal Sewage Sludge

2021

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“…As mentioned, cell lysis occurs after alkaline treatment. However, at high pH, PO 4 3− could form precipitate and stay in solid phase. Thus, it leads to the lower TP concentration in the supernantant of alkaline treated sludge compared to that of acidic treatment.…”

Section: Resultsmentioning

confidence: 99%

Pretreatments for Enhancing Sewage Sludge Reduction and Reuse in Lipid Production

Chen

Zhang

et al. 2020

Preprint

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Background: Converting wastewater sludge for lipid is considered as one of the best strategies of sludge management. The current problem of lipid production from sludge is the low yield due to the low availability of easily uptaken materials in sludge. Pretreatments are efficient methods to improve sludge bioavailability. Results: In this study, it was observed that the soluable chemical oxygen demand (SCOD) had significantly increased after different pretreatment.The SCOD in the supernatant was increased from 32.64±5.19 to 180±13 mg/L, 924±17 mg/L, 1030±6 mg/L and 3708±22 mg/L after acidic, alkaline, microwave irradiation and ultrasonication pretreatment, respectively. Pretreatments have also increased the release in total nitrogen (TN) and total phosphorus (TP) from solids. The sludge after different pretreatments were used as medium for lipid production, thighest lipid content (36.67% g/g) was obtained in the fermentation with ultrasonication pretreatment sludge, and the sludge reduction was 63.10%.Conclusion: It was found that ultrasonication pretreatment was the most efficient way to increase the sludge biodegradability (SCOD), to release TN and TP from solid phase to liquid phase. Pretreated sludge for lipid production achieved significant improvement lipid yield and sludge reduction. Lipids produced from pretreated sludge was transesterified to biodiesel and the analysis showed that the biodiesel had similar composition as commercial biodiesel. The study reveals that pretreatment on sludge is a promising method for enhancing biological sludge management efficiency.

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“…Besides pathogenic bacteria, sewage sludge and other organic fertilizers are abundant in antibiotic resistance genes [53,61,62]. Sewage sludge, as a by-product in WWTPs, is extensively used worldwide as an organic soil amendment and could pose a viable strategy for nutrient recovery from municipal waste [14]. Although some mandatory limits for heavy metals in sewage sludge (Cd: 20-40 mg/kg; Cu: 1,000-1,750 mg/kg; Hg: 16-25 mg/kg; Ni: 300-400 mg/kg; Pb: 750-1,200 mg/kg and Zn: 2,500-4,000 mg/kg) have been proposed by the European Commission for sewage sludge soil application [13], this could escalate the antibiotic resistance crisis [63].…”

Section: Discussionmentioning

confidence: 99%

“…European legislation concerning the use of sewage sludge in agriculture demands specific treatments before its application [ 13 ]. Sewage sludge, in addition to pathogenic microorganisms, may contain other organic and inorganic pollutants [ 14 ]. Therefore, a sludge stabilization procedure is used in order to remove its adverse characteristics such as odor and putrescence, as well as pathogenic bacteria.…”

Section: Introductionmentioning

confidence: 99%

Composted Sewage Sludge Influences the Microbiome and Persistence of Human Pathogens in Soil

et al. 2020

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Composted sewage sludge (CSS) gained attention as a potential fertilizer in agriculture. Application of CSS increases soil microbial activity and microbial biomass, however, it can also lead to increased chemical and microbiological risks. In this study, we performed microcosm experiments to assess how CSS reshapes the microbial community of diluvial sand (DS) soil. Further, we assessed the potential of CSS to increase the persistence of human pathogens in DS soil and the colonization of Chinese cabbage (Brassica rapa L. subsp. pekinensis (Lour.) Hanelt). The results revealed that CSS substantially altered the prokaryotic community composition. Moreover, addition of CSS increased the persistence of Salmonella enterica serovar Typhimurium strain 14028s and S. enterica serovar Senftenberg in DS soil. However, the enhanced persistence in soil had no impact on the colonization rate of B. rapa grown on soil inoculated with Salmonella. We detected Salmonella in leaves of 1.9% to 3.6% of plants. Addition of CSS had no impact on the plant colonization rate. The use of sewage sludge composts is an interesting option. However, safety measures should be applied in order to avoid contamination of crop plants by human pathogens.

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The effect of stabilization on the utilization of municipal sewage sludge as a soil amendment

Cited by 50 publications

References 62 publications

The Effect of Static Magnetic Field on Methanogenesis in the Anaerobic Digestion of Municipal Sewage Sludge

The Effect of Static Magnetic Field on Methanogenesis in the Anaerobic Digestion of Municipal Sewage Sludge

Pretreatments for Enhancing Sewage Sludge Reduction and Reuse in Lipid Production

Composted Sewage Sludge Influences the Microbiome and Persistence of Human Pathogens in Soil

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