Recycling of Calcium-Silicate Material After Wastewater Filtration to Agriculture - Soil Condition Impact

Recycling of Calcium-Silicate Material After Wastewater Filtration to Agriculture - Soil Condition Impact Reactive filter materials aimed at phosphorus (P) recovery is a novel method for on-site wastewater treatment. Once the bed filter is no longer effective, the sorbent must be replaced and can then be recycled as a soil amendment to agriculture. This study investigated the short-term effects of such amendments in a field with a wheat crop in order to evaluate the risks and/or potential benefits of this disposal option. The developed product Polonite (manufactured from Opoka) was used as a model filter sorbent in the field trial. Rates corresponding to approximately 6 and 8 tons per hectare were applied. In the short-term, this amending did not affect soil physical and sorption properties. The rate of Polonite used here, as P source for wheat was irrelevant in this kind of soil. The usefulness of this disposal option of exhausted filter material is discussed.

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Long-term phosphate removal by the calcium-silicate material Polonite in wastewater filtration systems

Chemosphere ◽

10.1016/j.chemosphere.2010.02.035 ◽

2010 ◽

Vol 79 (6) ◽

pp. 659-664 ◽

Cited By ~ 53

Author(s):

Agnieszka Renman ◽

Gunno Renman

Keyword(s):

Calcium Silicate ◽

Phosphate Removal ◽

Silicate Material ◽

Wastewater Filtration

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Alternative methods for Salt free / Less salt short term preservation of hides and skins in leather making for sustainable development – A review

Textile & Leather Review ◽

10.31881/tlr.2019.19 ◽

2019 ◽

Vol 2 (1) ◽

pp. 46-52 ◽

Cited By ~ 1

Author(s):

Venkatasubramanian Sivakumar ◽

Resmi Mohan ◽

Chellappa Muralidharan

Keyword(s):

Sodium Chloride ◽

Environmental Concern ◽

Treatment Method ◽

Alternative Methods ◽

Waste Streams ◽

Short Term ◽

Leather Processing ◽

Disposal Option ◽

Patent Literature ◽

Ultra Filtration

During the leather processing, large quantities of the salt as sodium chloride, about 30-50 % (% w/w on raw weight) is applied for short term preservation of hides and skins, which subsequently leaches out from the skins/hides and end up in waste streams. This raises a serious environmental concern as well as total dissolved solids (TDS) problem in the wastewater, for which there is no viable treatment method available. Remediation measures such as Reverse Osmosis (RO) or Ultra Filtration (UF) could only separate salt from these waste streams and end up as salt sludge, which necessitates Secured Land Fill (SLF) for disposal option. There are some concerns for SLF as it requires Land area as well as possible leaching due to highly soluble nature of Sodium chloride. Therefore, there is a pressing need for developing an alternative methods for Salt free / Less salt short term preservation of hides and skins. In this regard, Research and Development work is being carried out worldwide and several reports are available. Therefore, it would be beneficial to review and analyze the salt free alternative preservation methods. Even though, some reviews on this topic has been reported earlier, they have not taken into account the patent literature available on this subject. The present paper reviews various alternative methods for Salt free / Less salt short term preservation of hides and skins, taking into account both patent and other publications on this subject.

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Skeleton weed (Chondrilla juncea) in the Victorian Mallee. 5. Chemical fallowing

Australian Journal of Experimental Agriculture ◽

10.1071/ea9710320 ◽

1971 ◽

Vol 11 (50) ◽

pp. 320

Author(s):

GJ Wells

Keyword(s):

Soil Moisture ◽

Weed Control ◽

Soil Type ◽

Wheat Crop ◽

Soil Nitrate ◽

Summer Period ◽

Short Term ◽

Fallow Period ◽

Time Of Application ◽

Yield Responses

Skeleton weed is difficult to control on cultivated fallows during the summer and experiments were commenced in 1963 on the use of short-term residual herbicides for chemically fallowing infested land for wheatgrowing. Rates and times of application of simazine mixtures, a picloram/2,4-D mixture, an atrazine/amiltrole mixture, and fenac were tested. Compared with cultivated fallows, chemical fallowing increased wheat yields in four years out of six. The yield responses were associated with increased soil nitrate and soil moisture at sowing, reflecting the improved weed control by herbicides, particularly during the summer period. The effects of toxic residues from simazine and atrazine on the wheat crop were influenced by rate and time of application, rainfall during the fallow period, and soil type.

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Fixed Partial Restorations Made of a New Zirconia-Reinforced Lithium Silicate Material: A 2-Year Short-Term Report

The International Journal of Prosthodontics ◽

10.11607/ijp.6924 ◽

2021 ◽

pp. 37-46

Author(s):

Marco Degidi ◽

Diego Nardi ◽

Gianluca Sighinolfi ◽

Davide Degidi ◽

Adriano Piattelli

Keyword(s):

Lithium Silicate ◽

Silicate Material ◽

Short Term

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Effect of the Ratio of Silica Source on Ultra-Light Calcium Silicate Material In Situ Strengthened with Xonotlite Whiskers

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.648.131 ◽

2013 ◽

Vol 648 ◽

pp. 131-134 ◽

Cited By ~ 1

Author(s):

Fei Liu ◽

Ting Li ◽

Xiao Dan Wang ◽

Jian Xin Cao

Keyword(s):

Mechanical Properties ◽

Compressive Strength ◽

Hydrothermal Synthesis ◽

Flexural Strength ◽

Calcium Silicate ◽

In Situ Growth ◽

Silicate Material ◽

Silica Source ◽

Microstructure And Mechanical Properties

The ultra-light calcium silicate material was reinforced with the method of xonotlite whisker in-situ growth via hydrothermal synthesis. Effects of different ratios of silica sources on microstructure and mechanical properties of the reinforcement were studied in this paper. The results indicated that the ratios of silica sources posed great impacts on microstructure and mechanical properties of the reinforcement. The reinforcement with density of 118 Kg•m-3, flexural strength of 0.42 MPa and compressive strength of 0.66 MPa was successfully prepared under the condition of K2SiO3:H2SiO3 (mol) =2:1.

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Preparation of Nanoporous Super Thermal Insulation Material Compounded with Xonotlite-SiO2-Aerogel and Characterization of the Pore Structure

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.336-338.1505 ◽

2007 ◽

Vol 336-338 ◽

pp. 1505-1508 ◽

Cited By ~ 5

Author(s):

Jian Xin Cao ◽

Yu Zhang ◽

Ling Ke Zeng

Keyword(s):

Pore Structure ◽

Pore Size Distribution ◽

Pore Size ◽

Size Distribution ◽

Thermal Insulation ◽

Calcium Silicate ◽

Insulation Material ◽

Silicate Material ◽

Thermal Insulation Material ◽

Sio2 Aerogel

Ultra-light calcium silicate material constructed with fibrous xonotlite crystals has an advantage of low-thermal conduction coefficient. But the microporous structure can hardly make a better performance in terms of super thermal insulation. Although nanoporous structure of SiO2-aerogel satisfies the requirement, its tenacity is not strong enough to produce by itself blocky super thermal insulation material. This research, thus proposes to apply SiO2-aerogel as nanoporous carrier in the process of preparation, with Ultra-light calcium silicate material constructed with fibrous xonotlite crystals as the matrix so as to prepare nanoporous super thermal insulation material compounded with Xonotlite-SiO2-aerogel via so-gel method and ethanol supercritical drying. SEM and pore size distribution techniques were here applied to characterize the morphology and pore structure of the composite material. The results show that the SiO2-aerogels were better distributed in pore of calcium silicate matrix, with the pore size distribution of composite ranging from 10 nanometers to 50 nanometers, and average pore size less then 20 nm.

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Management of Palatogingival Groove using the Innovative Tricalcium Silicate Material Biodentine™

CODS Journal of Dentistry ◽

10.5005/jp-journals-10063-0013 ◽

2016 ◽

Vol 8 (1) ◽

pp. 54-58

Author(s):

NM Dhanyakumar ◽

Soumya R Devasia

Keyword(s):

Female Patient ◽

Calcium Silicate ◽

Tooth Loss ◽

Tricalcium Silicate ◽

Complete Healing ◽

Tooth Root ◽

Silicate Material ◽

Patient Reported ◽

Variable Extent ◽

Palatogingival Groove

ABSTRACT Palatogingival grooves (PGG) are developmental malformations that cause endodontic–periodontal lesions. Owing to their inconspicuous occurrence, funnel-shaped morphology, and variable extent on tooth root, they promote adherence of plaque and bacteria to levels significant for the development of pathology. Several treatment approaches have been recognized in the literature for the management of this anomaly. Here, in this report, a 32-year-old female patient reported with the complaint of pain and swelling in maxillary left lateral incisor. Clinical examination confirmed an endodontic–periodontal lesion in relation to PGG. Endodontic treatment was instituted followed by odontoplasty of the groove and restoration with newer calcium silicate cement, Biodentine. Combined endodontic–periodontal approach was successful in resolving the pathology with complete healing seen both clinically and radiographically. Timely diagnosis, prevention, and management are highly recommended to prevent tooth loss due to complications arising secondary to their presence. How to cite this article Dhanyakumar NM, Devasia SR. Management of Palatogingival Groove using the Innovative Tricalcium Silicate Material Biodentine™. CODS J Dent 2016;8(1):54-58.

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