Use of Sewage Sludge Ash in the Production of Innovative Bricks—An Example of a Circular Economy

Bubalo, Anđelina; Vouk, Dražen; Štirmer, Nina; Nađ, Karlo

doi:10.3390/su13169330

Cited by 19 publications

(9 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The reuse of SS as building materials (such as bricks and cement) is a method for the industrial recovery of SS and disposal management [149]. GHG emissions from the production of bricks and cement are 36.5 and 89,015 kg CO 2 -eq t −1 SS, respectively [141].…”

Section: Industrial Recoverymentioning

confidence: 99%

Feasibility of Biochar Derived from Sewage Sludge to Promote Sustainable Agriculture and Mitigate GHG Emissions—A Review

Ghorbani

Konvalina

Walkiewicz

et al. 2022

IJERPH

View full text Add to dashboard Cite

Sewage sludge (SS) has been connected to a variety of global environmental problems. Assessing the risk of various disposal techniques can be quite useful in recommending appropriate management. The preparation of sewage sludge biochar (SSB) and its impacts on soil characteristics, plant health, nutrient leaching, and greenhouse gas emissions (GHGs) are critically reviewed in this study. Comparing the features of SSB obtained at various pyrolysis temperatures revealed changes in its elemental content. Lower hydrogen/carbon ratios in SSB generated at higher pyrolysis temperatures point to the existence of more aromatic carbon molecules. Additionally, the preparation of SSB has an increased ash content, a lower yield, and a higher surface area as a result of the rise in pyrolysis temperature. The worldwide potential of SS output and CO2-equivalent emissions in 2050 were predicted as factors of global population and common disposal management in order to create a futuristic strategy and cope with the quantity of abundant global SS. According to estimations, the worldwide SS output and associated CO2-eq emissions were around 115 million tons dry solid (Mt DS) and 14,139 teragrams (Tg), respectively, in 2020. This quantity will rise to about 138 Mt DS sewage sludge and 16985 Tg CO2-eq emissions in 2050, a 20% increase. In this regard, developing and populous countries may support economic growth by utilizing low-cost methods for producing biochar and employing it in local agriculture. To completely comprehend the benefits and drawbacks of SSB as a soil supplement, further study on long-term field applications of SSB is required.

show abstract

Section: Industrial Recoverymentioning

confidence: 99%

Feasibility of Biochar Derived from Sewage Sludge to Promote Sustainable Agriculture and Mitigate GHG Emissions—A Review

Ghorbani

Konvalina

Walkiewicz

et al. 2022

IJERPH

View full text Add to dashboard Cite

show abstract

“…Researchers have investigated the feasibility of recycling this sludge as a soil conditioner, alternate aggregates, raw material for brick and cement making, etc. [23][24][25]. However, the reported findings are mostly inadequate to arrive at any conclusion, as most of these studies did not provide much detail on the characterization of the sludge.…”

Section: Characteristics Of Etp Sludgementioning

confidence: 96%

“…Entire sludge and ash can be recycled through aggregate, brick, and cement making applications [25] Table 5. Cont.…”

mentioning

confidence: 99%

Ascertaining and Optimizing the Water Footprint and Sludge Management Practice in Steel Industries

Choudhury

Singh²,

Veeraraghavan

et al. 2023

Water

View full text Add to dashboard Cite

Steelmaking is a water-intensive process. The mean water intake against each ton of steel manufactured is ascertained as between 2 and 20 m3. Primarily, the stated requirement is in the form of make-up water to compensate for evaporation and mechanical losses and does not contribute to wastewater generation. Conversely, unit operations, such as rolling, continuous casting, pickling, etc., generate highly complex wastewater rich in polycyclic aromatic hydrocarbons (PAH), cyanide, ammonia, non-consumed acids, benzene, toluene, xylene, oil, grease, etc. Further, the conjugative wastewater contains a high concentration of metallic oxides, toxic elements, oil, nitrogen, and heavy metals such as zinc, nickel, chromium, etc. These contaminants are generally treated and neutralized using physicochemical and membrane-based systems. This also yields hazardous sludge, which is landfilled, thereby incurring an ancillary financial burden. However, sludge can be a frugal source of extracting multi-dimensional benefits. The present review investigated and identified the most water-intensive and wastewater/sludge-contributing unit operations and proposed a preferential combination of treatments to balance efficacy and economy. Further, the various global practices for sludge recycling and management documented in the existing literature are summarized and ranked with the help of the analytic hierarchy process (AHP). The findings revealed concrete making and nutrient recovery as the most- and least-preferred recycling alternatives.

show abstract

“…Many innovations have been generated, in addition to traditional options such as energy generation, related to the sustainable use of sewage sludge from variations in the anaerobic digestion process [37]; pyrolysis processes have become more efficient [38], and sewage sludge has been used as construction material [14,39]. In water treatment issues, different and more efficient technologies have been developed, e.g., membranes, economic microalgae systems and advanced oxidation, among many others [40].…”

Section: Sustainability Strategies In the Operation Of Wwtpsmentioning

confidence: 99%

Circular Economy, Eco-Innovation and a Business Model for the Operation of Wastewater Treatment Plants in Mexico

García-Castillo,

Maldonado-Villalpando,

Seguí-Amórtegui

et al. 2024

Resources

View full text Add to dashboard Cite

Wastewater treatment plants face enormous economic, environmental, technical, and regulatory challenges, including the high energy costs of their operation, waste generation, and the destination of treated water. In this regard, a proposal was made for the operation of municipal WWTPs in Mexico, based on the symbiosis of the circular economy and eco-innovation as strategies for sustainable change in their operation. As a result, it was possible to obtain an updated diagnosis of the situation of the WWTPs, a proposal for their operation was made, and a circular and innovative business model was established for these plants in order to channel decision-making and visualize the path for the transition of these facilities to sustainable operation.

show abstract

Use of Sewage Sludge Ash in the Production of Innovative Bricks—An Example of a Circular Economy

Cited by 19 publications

References 44 publications

Feasibility of Biochar Derived from Sewage Sludge to Promote Sustainable Agriculture and Mitigate GHG Emissions—A Review

Feasibility of Biochar Derived from Sewage Sludge to Promote Sustainable Agriculture and Mitigate GHG Emissions—A Review

Ascertaining and Optimizing the Water Footprint and Sludge Management Practice in Steel Industries

Circular Economy, Eco-Innovation and a Business Model for the Operation of Wastewater Treatment Plants in Mexico

Contact Info

Product

Resources

About