Sustainable HMF synthesis from waste cooked rice water using fly-ash based Al2SiO5 supported nanophoto catalyst under halogen-ultrasound synergistic-energy: LCA and DFT based simulation

2021 ◽  
pp. 106736
Author(s):  
Sourav Barman ◽  
Rajat Chakraborty
Keyword(s):  
Fly Ash ◽  
Cooked Rice ◽  
Rice Water

Effects of Chitosan and a Low-Molecular-Weight Chitosan on Bacillus cereus and Application in the Preservation of Cooked Rice

2006 ◽  
Vol 69 (9) ◽  
pp. 2168-2175 ◽  
Author(s):  
GUO-JANE TSAI ◽  
MEN-TSO TSAI ◽  
JING-MIN LEE ◽  
MON-ZONG ZHONG
Keyword(s):  
Molecular Weight ◽  
Bacillus Cereus ◽  
Low Molecular Weight ◽  
Ph Change ◽  
Sterile Saline ◽  
Cooked Rice ◽  
Steam Cooking ◽  
Cell Age ◽  
Low Molecular Weight Chitosan ◽  
Rice Water

Shrimp chitosan with 95% deacetylation and low-molecular-weight chitosan (LMWC) isolated from chitosan hydrolysate were investigated for their effects on the growth of Bacillus cereus and for use in the preservation of cooked rice. Four strains of Bacillus cereus were used: standard strain BCRC 10603 and three isolates (nos. 1 through 3) from cooked rice. The antibacterial activity of chitosan against B. cereus was greatly decreased when the reaction pH was changed from 6.0 to 7.0, but LMWC activity was less affected by this pH change. The susceptibility of B. cereus cells to chitosan decreased with increasing of cell age, in accordance with the relative electronegativity of the cell surface. B. cereus spores were more sensitive to LMWC and chitosan than were vegetative cells. Addition of 80 ppm LMWC and chitosan in sterile saline (pH 7.0) greatly reduced the D-value for the tested four strains at 90°C from 30.77 to 46.51 min to 7.47 to 10.17 min and 4.68 to 7.91 min, respectively, and at 100°C from 1.95 to 2.56 min to 0.89 to 0.93 min and 0.72 to 0.80 min, respectively. Addition of 2,000 ppm LMWC to raw rice water before steam cooking effectively inhibited increases in total aerobic bacteria and B. cereus in cooked rice stored at 37 and 18°C.

Arsenic concentrations in at home prepared cooked and fried rice

2020 ◽  
Vol 3 (3) ◽  
pp. 01-05
Author(s):  
Albert van de Wiel ◽  
Tom Lammers ◽  
Zhi Wei Cai ◽  
Antonia Bert Wolterbeek
Keyword(s):  
Arsenic Concentration ◽  
Brown Rice ◽  
The Other ◽  
White Rice ◽  
Cooked Rice ◽  
The World ◽  
Rice Water ◽  
Additional Reduction ◽  
Water Ratio ◽  
Maximum Limit

Rice is the most widely consumed food for a large part of the world containing a variety of essential nutrients, but can also be contaminated with toxics like arsenic. This study analyzes the effect of cooking and frying, processed in the consumer’s kitchen, on arsenic concentrations Firstly, arsenic concentrations were measured in a number of rice species from Thailand and Turkey, available in supermarkets. The effect of cooking was studied in both white and brown rice with time of cooking and rice: water ratio as recommended by the producer. Part of the cooked rice was fried together with other ingredients for the preparation of the popular dish nasi goreng. Arsenic concentrations were measured with instrumental neutron activation analysis. Only one of the ten analyzed species contained an arsenic concentration beyond the European maximum limit of 0.3 mg/kg. Cooking of white rice resulted in a decrease of the arsenic concentration by 46%, while the concentration in brown rice was reduced by 27%. The preparation of the fried rice dish nasi goreng resulted in an additional reduction by 20% per weight unit, which should be attributed for the most part to a diluting effect by the addition of the other ingredients. Heating of rice without water reduced the arsenic concentration only by 10%. Cooking and frying of rice according to recommendations by the producer, result in a significant reduction of the arsenic concentration.

Characterization of lead-bearing phases in municipal waste combustor fly ash

1996 ◽  
Vol 54 ◽  
pp. 516-517
Author(s):  
L. L. Sutter ◽  
G. R. Dewey ◽  
J. F. Sandell
Keyword(s):  
Fly Ash ◽  
Bottom Ash ◽  
Municipal Waste ◽  
Primary Concern ◽  
Leaching Behavior ◽  
Waste Combustion ◽  
Lead And Cadmium ◽  
Lead Speciation ◽  
Accepted Practice

Municipal waste combustion typically involves both energy recovery as well as volume reduction of municipal solid waste prior to landfilling. However, due to environmental concerns, municipal waste combustion (MWC) has not been a widely accepted practice. A primary concern is the leaching behavior of MWC ash when it is stored in a landfill. The ash consists of a finely divided fly ash fraction (10% by volume) and a coarser bottom ash (90% by volume). Typically, MWC fly ash fails tests used to evaluate leaching behavior due to high amounts of soluble lead and cadmium species. The focus of this study was to identify specific lead bearing phases in MWC fly ash. Detailed information regarding lead speciation is necessary to completely understand the leaching behavior of MWC ash.

INFLAMMATION, CHEMOKINE EXPRESSION, AND DEATH IN MONOCROTALINE-TREATED RATS FOLLOWING FUEL OIL FLY ASH INHALATION

1997 ◽  
Vol 9 (6) ◽  
pp. 541-565 ◽  
Author(s):  
Cheryl R. Killingsworth ◽  
Francesca Alessandrini ◽  
G. G. Krishna Murthy ◽  
Paul J. Catalano ◽  
Joseph D. Paulauskis ◽  
...  
Keyword(s):  
Fly Ash ◽  
Fuel Oil ◽  
Chemokine Expression ◽  
Oil Fly Ash

Effect of Curing Time on the Performance of Fly Ash Geopolymer-Stabilized RAP Bases

2021 ◽  
Vol 33 (3) ◽  
pp. 04021001
Author(s):  
Maheshbabu Jallu ◽  
Sireesh Saride ◽  
Arul Arulrajah ◽  
Subrahmanyam Challapalli ◽  
Robert Evans
Keyword(s):  
Fly Ash ◽  
Curing Time

Review on Experimental Study on Effect of Corrosion In Reinforced Concrete Fly-Ash Beam

2020 ◽  
pp. 92-96
Author(s):  
Shubham N. Dadgal ◽  
Shrikant Solanke
Keyword(s):  
Fly Ash ◽  
Bond Strength ◽  
Structural Damage ◽  
Pullout Test ◽  
Partial Replacement ◽  
Structural Members ◽  
Accelerated Corrosion ◽  
Resistivity Method ◽  
Electrical Resistivity Method ◽  
Structural Failures

In modern days for structures in coastal areas it has been observed that the premature structural failures are occurs due to corrosion of the reinforcements of the designed structural member. The corrosion causes the structural damage which in turn leads to reduction in the bearing capacity of the concerned structural members. The aim of this study was to study the effect of partial replacement of fly ash to minimize the corrosion effect. Beams were designed and corroded by using artificial method known accelerated corrosion method. The beams were then tested for flexural and bond strength. Also the weight loss of the reinforced bars was been determined using electrical resistivity method. The fly ash will replace by 10% and 15%.The strength will calculate at varying percentage of corrosion at 10% and 15%. Beams will cast at M25 grade concrete. The flexural strength will test by using UTM and the bond strength will calculate using pullout test.

A Review on Utilization of Fly- Ash and Pond-Ash as a Partial Replacement of Cement in Concrete Mix Design

2018 ◽  
pp. 413-418
Author(s):  
Harshkumar Patel ◽  
Yogesh Patel
Keyword(s):  
Fly Ash ◽  
Electricity Generation ◽  
Power Plants ◽  
Renewable Energy Sources ◽  
Thermal Power ◽  
Strength Test ◽  
Partial Replacement ◽  
Pond Ash ◽  
Research Activities ◽  
Ash Disposal

Now-a-days energy planners are aiming to increase the use of renewable energy sources and nuclear to meet the electricity generation. But till now coal-based power plants are the major source of electricity generation. Disadvantages of coal-based thermal power plants is disposal problem of fly ash and pond ash. It was earlier considered as a total waste and environmental hazard thus its use was limited, but now its useful properties have been known as raw material for various application in construction field. Fly ash from the thermal plants is available in large quantities in fine and coarse form. Fine fly ash is used in construction industry in some amount and coarse fly ash is subsequently disposed over land in slurry forms. In India around 180 MT fly is produced and only around 45% of that is being utilized in different sectors. Balance fly ash is being disposed over land. It needs one acre of land for ash disposal to produce 1MW electricity from coal. Fly ash and pond ash utilization helps to reduce the consumption of natural resources. The fly ash became available in coal based thermal power station in the year 1930 in USA. For its gainful utilization, scientist started research activities and in the year 1937, R.E. Davis and his associates at university of California published research details on use of fly ash in cement concrete. This research had laid foundation for its specification, testing & usages. This study reports the potential use of pond-ash and fly-ash as cement in concrete mixes. In this present study of concrete produced using fly ash, pond ash and OPC 53 grade will be carried. An attempt will be made to investigate characteristics of OPC concrete with combined fly ash and pond ash mixed concrete for Compressive Strength test, Split Tensile Strength test, Flexural Strength test and Durability tests. This paper deals with the review of literature for fly-ash and pond-ash as partial replacement of cement in concrete.

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