Co-utilization of lake sediment and blue-green algae for porous lightweight aggregate (ceramsite) production

Zhao, Lina; Hu, Min; Halimi, Muslim; Hou, Tianyang; Bian, Bo; Yang, Zhen; Yang, Weiben; Zhang, Limin

doi:10.1016/j.chemosphere.2021.132145

Cited by 40 publications

(11 citation statements)

References 39 publications

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“…Generally, dredged sediments contain high amounts of salts (Doni et al, 2018;Wang et al, 2018a) and water, which is present in high variable range, i.e., 24-90% (Zhao et al, 2022). A significant part of this water is difficult to be removed as it remains bound to sediments by electrical charges (Chi et al, 2018).…”

Section: Characteristics Of Dredged Sedimentsmentioning

confidence: 99%

“…The chemical classification is based on the development of a chemical Hazard Quotient (HQ) index which considers the type and number of non-compliant parameters, as well as the extent of such exceedances (DM 173, 2016). When the sediments are directly or indirectly (i.e., after treatment) disposed or used to obtain by-products, these final products have to be also submitted to release tests to assess the pollutant mobility (Bortone and Palumbo, 2007;Zhao et al, 2022). The leachates that come from a release test in water of the matrices for a period of 24 hours cannot overpass the thresholds reported in DM 5 th February 1998.…”

Section: Regulations Regarding Dredged Sedimentsmentioning

confidence: 99%

“…However, when the organic content of sediments is high (especially in terms of extracellular polymeric substances (EPS)), more water is bound to sediments, hindering dewatering. To release the interstitial water and facilitate its removal, chemical conditioners such as iron and aluminium salts, or organic polymers like polyacrylamide (PAM) and poly dimethyldiallylammonium chloride (PDMDAAC), can be used (Chi et al, 2018;Zhao et al, 2022).…”

Section: Dewateringmentioning

confidence: 99%

See 2 more Smart Citations

An overview of operations and processes for circular management of dredged sediments

Crocetti

González-Camejo

et al. 2022

Waste Management

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Section: Characteristics Of Dredged Sedimentsmentioning

confidence: 99%

Section: Regulations Regarding Dredged Sedimentsmentioning

confidence: 99%

Section: Dewateringmentioning

confidence: 99%

See 1 more Smart Citation

An overview of operations and processes for circular management of dredged sediments

Crocetti

González-Camejo

et al. 2022

Waste Management

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“…Therefore, heavy metal pollution is the main problem related to sediment resource utilization. The objective behind the development of future technology is to provide safe, efficient, and resource-based ecological treatment of solid waste by adopting green and sustainable environmental practices (Zhao et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

Analysis of heavy metals in the conversion of lake sediment and restaurant waste by black soldier fly (Hermetia illucens)

Yang

Wang

et al. 2023

Front. Bioeng. Biotechnol.

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The risk posed by heavy metals makes it difficult to dispose of sediment contaminants from dredging lakes in China. Black soldier fly (Hermetia illucens) can convert organic waste, such as restaurant waste and lake sediment, to high-value-added protein feed and fertilizer. Experimental groups were formed in this study to explore the conversion of heavy metals present in the mixture of restaurant waste and lake sediment by black soldier fly larvae (BSFL). The results demonstrated that BSFL could survive in pure sediment with an 84.76% survival rate. Relative to the substrate, BSFL could accumulate 70-90% zinc (Zn), chromium (Cr), copper (Cu), and 20-40% cadmium (Cd) and lead (Pb). The experimental group 2:3, with 40% lake sediment and 60% restaurant waste, was the best group after conversion for 15 days, which showed a 95.24% survival rate of BFSL, 82.20 mg average weight of BFSL, 8.92 mm average length of BFSL, with varying content of heavy metals such as Cu (43.22 mg/kg), Zn (193.31 mg/kg), Cd (1.58 mg/kg), Cr (25.30 mg/kg) Cr, and Pb (38.59 mg/kg) in BSFL. Furthermore, the conversion residue conforms to the relevant standards of organic fertilizer in China and can be used as organic fertilizer. Overall, the present study shows that black soldier flies can improve the resource utilization of lake sediment, especially by reducing the effect of heavy metals.

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“…Compared with other adsorbents, ceramsite offers the advantages of a simple preparation procedure, easy access to raw materials, and the capacity to absorb a variety of contaminants. By using lake sediment, sewage treatment plant sludge, water plant sludge, municipal sewage pipes, and sludge incinerator products to produce ceramsite, the goal of recycling waste and solidifying heavy metal components in sediment or sludge is achieved (Zhao, Hu, et al, 2022). In order to dispose of wastewater polluted by Pb(II), Chen et al tried to create a new ceramsite with good adsorption properties by combining biomass and sewage sludge ash and gasifying coal fly ash and sewage sludge (Chen et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Adsorption of nitrogen and phosphorus from wastewater by modified sludge/biomass ash ceramsite: Preparation, adsorption mechanism, and sustainable analysis

Shen

Zhou

et al. 2023

Water Environment Research

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Excessive ammonium and phosphate in aquatic settings may produce major eutrophication. Adsorbents can be used to reduce the eutrophication of natural water bodies. In this study, a sustainable and efficient ceramic adsorbent (sludge/biomass ash ceramsite [SBC]) was prepared by using sludge and biomass ash with a weight ratio of 1:1; the sintering parameters were 1070°C for 15 min. The NH4+‐N and P adsorption capabilities were improved by utilizing 1 mol L−1 NaOH and 1.6 mol L−1 La(NO3)3·6H2O for modification. When the pH and duration were 7 and 1440 min, respectively, the maximum bending capacity of ammonia nitrogen and phosphorus was 3.2 and 2.1 mg g−1 at 308 K. The pseudo‐second‐order kinetic model better describes the adsorption dynamics of NH4+‐N and P, whereas the Langmuir model better describes the adsorption isotherm models of NH4+‐N and P. The adsorption mechanism of SBC‐NaOH on NH4+‐N is ion exchange between Na+ and NH4+, whereas the adsorption mechanism of SBC‐La on phosphorus is ion exchange and La3+ adsorption. SBC combines efficient wastewater purification with the reuse of solid waste. The findings gave rise to the possibility of recycling ceramics as a plant fertilizer with a delayed release in the future. Practitioner Points New ceramsite was made from sludge and biomass ash. NH4+‐N (3.2 mg g−1) and P (2.1 mg g−1) were effectively adsorbed by ceramsite. The mechanism of NH4+‐N and P adsorption by ceramsite was studied. Absorbed ceramsite can be used as slow‐release fertilizer in plant cultivation.

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Co-utilization of lake sediment and blue-green algae for porous lightweight aggregate (ceramsite) production

Cited by 40 publications

References 39 publications

An overview of operations and processes for circular management of dredged sediments

An overview of operations and processes for circular management of dredged sediments

Analysis of heavy metals in the conversion of lake sediment and restaurant waste by black soldier fly (Hermetia illucens)

Adsorption of nitrogen and phosphorus from wastewater by modified sludge/biomass ash ceramsite: Preparation, adsorption mechanism, and sustainable analysis

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