Benefits of Diatomaceous Earth Filter Aids Use in Bleaching Filter Operations

2021 ◽  
Author(s):  
Niels Mastrup
Keyword(s):  
Diatomaceous Earth ◽  
Filter Aids ◽  
Bleaching Filter

scholarly journals Innovative regenerable polyamide particles as new filter aids for wine lees filtration

OENO One ◽  
2021 ◽  
Vol 55 (4) ◽  
pp. 197-208
Author(s):  
Marion Breniaux ◽  
Camille Demoulin ◽  
Arnaud Massot ◽  
Rémy Ghidossi
Keyword(s):  
Diatomaceous Earth ◽  
Wine Quality ◽  
Economic Implications ◽  
Organoleptic Characteristics ◽  
Dead End ◽  
Filter Aids ◽  
The Impact ◽  
Filter Aid

In oenology, the conventional dead-end filtration with filter aids, used for the processing of wine lees, consumes a high quantity of diatomaceous earth and brings serious environmental, sanitary and economic implications. In a real concern to improve wine quality and to decrease pollution, the “ecological filtration” concept based on the utilisation of a regenerative filter aid is proposed in this study. Polyamide particles were investigated as innovative filter aids for wine lees filtration. Trials were performed with two grades of polyamide particles D80 (D50 = 91.8 µm) and D100 (D50 = 111 µm). Filtration was carried out with wine added with two concentrations of lees (10.8 % and 20.2 %). The impact on wine quality was determined with oenological analyses, showing that the filtration made with polyamide particles did not modify wine organoleptic characteristics, improved turbidity and the filtrate fluxes are higher in comparison to the usual precoat filtration. Then, polyamide particle regeneration experiments proved that these particles could be reused as filter aids several times after cleaning.

Factors Affecting Transfer of the Heavy Metals Arsenic, Lead, and Cadmium from Diatomaceous-Earth Filter Aids to Alcoholic Beverages during Laboratory-Scale Filtration

2019 ◽  
Vol 67 (9) ◽  
pp. 2670-2678 ◽  
Author(s):  
Benjamin W. Redan ◽  
Joseph E. Jablonski ◽  
Catherine Halverson ◽  
James Jaganathan ◽  
Md. Abdul Mabud ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Diatomaceous Earth ◽  
Laboratory Scale ◽  
Alcoholic Beverages ◽  
Factors Affecting ◽  
Lead And Cadmium ◽  
Filter Aids

scholarly journals STUDY ON TREATMENT OF LAM DONG DIATOMITE FOR FILTER AID MANUFACTURE

2011 ◽  
Vol 14 (3) ◽  
pp. 54-60
Author(s):  
Dang Doan Minh Tran ◽  
Phong Thanh Mai
Keyword(s):  
Electron Microscopy ◽  
Thermal Analysis ◽  
Scanning Electron Microscopy ◽  
Diatomaceous Earth ◽  
X Ray Diffraction ◽  
Fe2o3 Content ◽  
X Ray ◽  
Filter Aids ◽  
Filter Aid ◽  
Scanning Electron

Recent years in Vietnam, diatomaceous earth has been attractive to researchers and manufacturers due to its applications, particularly in the field of filter aid manufacture. In this study, diatomite from Dai Lao valley deposit (Bao Loc, Lam Dong province) was seclected for investigation of its possible application in preparation of filter aids. For this purpose, diatomite ore was characterized and treated in different acids in order to improve the material characteristics for filter aid manufacture. Chemical and physical properties of the raw and treated diatomite were determined using different instruments such as X-ray fluorescence (XRF), X-ray diffraction (XRD), differential thermal analysis (DTA) and scanning electron microscopy (SEM). The obtained results showed that Lam Dong diatomite has low SiO2 (52.9%) and high Fe2O3 content (5.32%). In order to enrich SiO2 and eliminate unnecessary components, different acids (6M H2SO4, 3.5M HCl and 5M HCl) were used. Among acids used, leaching in 6M H2SO4 gave most favorable results. Particularly, after leaching in 6M H2SO4, SiO2 content increased to 90.9% and Fe2O3 content decreased to 0.53%.

Bioefficacy of enhanced diatomaceous earth and botanical powders on the mortality and progeny production of Acanthoscelides obtectus (Coleoptera: Chrysomelidae), Sitophilus granarius (Coleoptera: Dryophthoridae) and Tribolium castaneum (Coleoptera: Tenebrionidae) in stored grain cereals

2017 ◽  
Vol 37 (04) ◽  
pp. 243-258 ◽  
Author(s):  
Charles Adarkwah ◽  
Daniel Obeng-Ofori ◽  
Vanessa Hörmann ◽  
Christian Ulrichs ◽  
Matthias Schöller
Keyword(s):  
Tribolium Castaneum ◽  
Diatomaceous Earth ◽  
Adult Mortality ◽  
Botanical Insecticides ◽  
Management Approach ◽  
Sitophilus Granarius ◽  
Progeny Production ◽  
Acanthoscelides Obtectus ◽  
Stored Grain ◽  
Plant Powders

Abstract Food losses caused by insects during postharvest storage are of paramount economic importance worldwide, especially in Africa. Laboratory bioassays were conducted in stored grains to determine the toxicity of powders of Eugenia aromatica and Moringa oleifera alone or combined with enhanced diatomaceous earth (Probe-A® DE, 89.0% SiO2 and 5% silica aerogel) to adult Sitophilus granarius, Tribolium castaneum and Acanthoscelides obtectus. Adult mortality was observed up to 7 days, while progeny production was recorded at 6–10 weeks. LD50 and LT50 values for adult test insects exposed to plant powders and DE, showed that A. obtectus was the most susceptible towards the botanicals (LD50 0.179% and 0.088% wt/wt for E. aromatica and M. oleifera, respectively), followed by S. granarius. Tribolium castaneum was most tolerant (LD50 1.42% wt/wt and 1.40% wt/wt for E. aromatica and M. oleifera, respectively). The combined mixture of plant powders and DE controlled the beetles faster compared to the plant powders alone. LT50 ranged from 55.7 h to 62.5 h for T. castaneum exposed to 1.0% M. oleifera and 1.0% DE, and 0.5% E. aromatica and 1.0% DE, respectively. Botanicals caused significant reduction of F1 adults compared to the control. Combined action of botanical insecticides with DE as a grain protectant in an integrated pest management approach is discussed.

Sign in / Sign up

Export Citation Format

Share Document