Moisture measurement in filter press mud by gamma transmission method

1995 ◽  
Vol 201 (4) ◽  
pp. 321-324
Author(s):  
L. Desdin ◽  
D. Gonzalez ◽  
A. Labrada
Keyword(s):  
Filter Press ◽  
Transmission Method ◽  
Press Mud ◽  
Moisture Measurement

Steel Mill Wastes Application in Soil: Dynamics of Potentially Toxic Elements in Rice and Health Risk Perspectives

2021 ◽  
Author(s):  
Geila S. Carvalho ◽  
Jakeline R. Oliveira ◽  
Isabela Vasques ◽  
Monna Lysa T. Santana ◽  
Marina Justi ◽  
...  
Keyword(s):  
Toxic Elements ◽  
Hazard Index ◽  
High Mobility ◽  
Filter Press ◽  
Potentially Toxic Elements ◽  
Rice Cultivation ◽  
Steel Mill ◽  
Press Mud ◽  
Functional Roles ◽  
High Hazard

Abstract Potentially toxic elements (PTE’s) are of great concern in steel mill wastes. Therefore, in other to use them as potential fertilizers in soil, risk assessments are needed. Three steel mill wastes were tested as possible amendments for soils at six different doses (0; 0,5; 1; 2; 4; 8; 16 t ha-1): Phosphate mud (PM), Metallurgical press residue (MPR) and Filter press mud (FPM) during rice cultivation in a pot experiment in a Haplic Gleisol. Analysis on rice tissues, including roots, shoots, husk and grains were conducted and contents of Cu, Cd, Ni, Zn, Mn and Pb were assessed. Translocation and bioaccumulation factors were calculated for each element. In general, PTE’s are more accumulated in roots and greater contents of Zn and Mn were found, while the lowest ones were found for Pb, probably due to its lack of functional roles during plants development. Higher translocation was observed for Mn, which is associated to the redox conditions of rice cultivation and the high mobility of this element under this condition. Application of steel mill wastes can increase PTE’s bioavailability and translocation factors, especially PM, but all of the wastes reveal a high hazard index.

An example of fractional replication in an experiment on sugar cane manuring

1953 ◽  
Vol 43 (1) ◽  
pp. 1-11 ◽  
Author(s):  
T. Chinloy ◽  
R. F. Innes ◽  
D. J. Finney
Keyword(s):  
Analysis Of Variance ◽  
Sugar Cane ◽  
Filter Press ◽  
Nutritional Requirements ◽  
Press Mud ◽  
The Right ◽  
Complete Investigation ◽  
Muriate Of Potash

Study of the nutritional requirements of sugar cane on a Jamaican estate necessitated simultaneous experimentation with five manurial factors: sulphate of ammonia, superphosphate, muriate of potash, bagasse, and filter press mud. By adopting a one-third replication of a 35 factorial scheme, each factor could be tested at single and double levels for comparison with the absence of the factor.The structure and confounding system of the design adopted have been described and the method of computing the analysis of variance has been explained. Fractional replication introduces special problems of interpretation, and this experiment illustrates how they may be resolved. Each fertilizer clearly benefited the crop, and several interactions appeared; some ambiguity of meaning is an inevitable concomitant of fractional replication, so that care was needed in order to assign effects to the right causes. The most clearly marked effects were:(i) Without phosphate, nitrogen failed to produce any response; where phosphatic manuring was adequate the crop responded well to nitrogen.(ii) Superphosphate and filter press mud were practically interchangeable as sources of phosphate.(iii) Bagasse appears to act as a source of potash; the interaction of responses is not very clearly established, but little extra response to artificial potash occurred when bagasse was given.(iv) No evidence was obtained that the double level of any fertilizer was superior to the single.There was also a suggestion of a reduced superphosphate response in the presence of bagasse.If a recommendation on manuring were to be based on this experiment, it would be that a maximum of 3 cwt. sulphate of ammonia per acre be used with either 4 cwt. 18% superphosphate and 1 cwt. muriate of potash per acre or 10 tons filter press mud and 20 tons bagasse per acre. In reality, of course, no attempt ought to be made to determine a general manurial policy from results of a single year of experimentation on plant cane at one place.The experiment should be regarded rather as typical of what can be done than as a complete investigation of manurial needs.

scholarly journals Impact of Fertilization on Vinca (Catharanthus roseus L.) Grown in Binary Mixtures of Sugarcane Filter Press Mud and Vermiculite

2016 ◽  
Vol 34 (1) ◽  
pp. 7-12
Author(s):  
Nicholas A. Larsen ◽  
Kimberly A. Moore
Keyword(s):  
Plant Growth ◽  
Manufacturing Industry ◽  
Waste Product ◽  
Potassium Nitrate ◽  
Filter Press ◽  
Plant Growth And Development ◽  
Press Mud ◽  
Saccharum Spp ◽  
Growing Medium ◽  
The Impact

Filter press mud (FPM) is a waste product of the sugar manufacturing industry that is primarily composed of soil, finely ground sugarcane (Saccharum spp.) stalks, and lime. It is widely used as a soil amendment wherever sugarcane is produced. This study sought to investigate the impact of fertilization with potassium nitrate on the growth of vinca (Cataranthus roseus L.) being grown in mixtures of FPM and vermiculite. The purpose of the study was to investigate the nutrient-supplying ability of the FPM-based growing medium. A completely randomized factorial design was installed into 18-count landscape trays, with each cell consisting of a different growing medium by fertilization treatment. While the bulk density of FPM-based growing media tended to be higher than FafardTM 2, plant growth was not stunted. Electrical conductivity and pH were not deleterious to the plants in any of the FPM treatments. Fertilization increased plant growth and development in all treatments in comparison to non-fertilized controls. The 1:1 FPM and vermiculite mixture by volume had the greatest increase in growth from fertilization while the least change in growth from fertilization occurred with the 100 percent FPM treatment. When using FPM as a growing medium, it appears that the fertilization practices might be decreased to take advantage of the nutrients released by the growing medium.

scholarly journals Growth and Production of Pakchoy Under Various Type of Organic Fertilizer

2020 ◽  
Vol 5 (1) ◽  
pp. 41-46
Author(s):  
R. Rahmawati
Keyword(s):  
Organic Matter ◽  
Water Hyacinth ◽  
Block Design ◽  
Organic Fertilizer ◽  
Filter Press ◽  
Chicken Manure ◽  
Fresh Weight ◽  
Press Mud ◽  
Randomized Block Design ◽  
Number Of Leaves

This study was conducted in Wiringpalenna village, Tempe sub-district of Wajo district, with the aim to determine the effect of the type of organic matter on the growth and production of pakchoy plants. The study was arranged based on a Randomized Block Design with five treatments namely: without organic matter, chicken manure, Blotong (Filter press mud), bokashi common water hyacinth, bokashi rice straw. The results showed that from variables tested; plant height, the number of leaves, the width of leaves, fresh weight of plants, fresh weight of plants per plot, and fresh weight per hectare, treatment with bokashi common water hyacinth obtained the best result

scholarly journals Online Moisture Measurement of Bio Fuel at a Paper Mill Employing a Microwave Resonator

Sensors ◽  
2018 ◽  
Vol 18 (11) ◽  
pp. 3844
Author(s):  
Martta-Kaisa Olkkonen
Keyword(s):  
Water Layer ◽  
Cavity Resonator ◽  
Paper Mill ◽  
Conveyor Belt ◽  
Filter Press ◽  
Average Height ◽  
Strip Line ◽  
Correct Operation ◽  
Moisture Measurement ◽  
Resonant Frequency Shift

This paper investigates online moisture measurement of biofuel employing a strip line cavity resonator at approximately 366 MHz, attached above and below the conveyor belt. An existing sensor design is modified for the factory assembly, and the correct operation has been tested prior to this paper with a small number of measurement points and collected reference samples (n = 67). The purpose is now to concentrate on the accuracy of the measurement and increase the number of measurement points (n = 367). The measurements were made in 5 different lots, and the thickness and moisture properties of the biomaterial mat were varied between minimum and maximum levels by adjusting the settings of the belt filter press that presses pulp slush into a mat. In order to further reduce inaccuracy, at the maximum one standard deviation was allowed from the average height of the equivalent water layer for each dataset, and consequently the number of samples was reduced to 235. A linear fit and a parabola fit were determined for thickness of the equivalent water layer vs. the relative resonant frequency shift: R2 = 0.82 and R2 = 0.78.

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