Acid washing

The protection of the environment through the recycling of waste brought back many economic-social benefits. Demand for the recycling of the large quantity of activated sludge derived from biological treatment stage of the wastewater treatment plant has become urgent in recent years. This study examined successfully the batch biosorption of Sulfur Brown GD on the recycled material prepared by the acid washing biomass of activated sludge.

5p vidoctorstrange 06-05-2023 5 1   Download

This work reports on dyeing of nylon/elastane fabric with water-soluble phthalocyanines (1-4) bearing quinoline 5-sulfonic acid substituents on the peripheral or nonperipheral positions and determining the antibacterial efficiency of the phthalocyanine compounds and the dyed nylon/elastane fabrics. The light, washing, water, perspiration, and rubbing fastness properties of nylon/elastane fabrics dyed with phthalocyanines were also determined. The results showed that all dyed fabrics showed very good wet fastness values.

14p tudichquannguyet 29-11-2021 12 1   Download

The aim of the study was to investigate the effect of pH on the lipid oxidation of red onion skin extracts (ROSEs) treated with washed tilapia muscle model systems (WTMS). Minced and buffered washed samples were prepared at pH 6.3 and 6.8. The WTMS were treated with2 different concentrations of red onion skin prior to storage for 5 days. Lipid oxidation was investigated via peroxide values (PVs), thiobarbituric acid reactive substances (TBARS), and the formation of volatile compounds. Fatty acid profiles of the samples were also identified.

11p tudichquannguyet 29-11-2021 6 1   Download

The objectives of the study were to determine the effective washing disinfectant (chlorine dioxide and r peracetic acid) in reducing total aerobic counts, E. coli and coliform, and then to test different packaging materials, namely polypropylene (PP), high density polyethylene (HDPE), and low density polyethylene (LDPE), on the quality and shelf-life of Ceylon spinach.

12p chauchaungayxua12 09-07-2021 20 1   Download

Xpert MTB/RIF has been shown to have a superior sensitivity to microscopy for acid fast bacilli (AFB) in sputum and has been recommended as a standard first line investigation for pulmonary tuberculosis (PTB). Bronchoscopy is a valuable tool in diagnosing PTB in sputum negative patients.

5p vimontana2711 05-04-2021 11 1   Download

This paper presents some results of the evaluation of the Ecological properties of cotton fabric and silk fabric dyed with colorants extracted from the Terminalia T. catappa leaves. The ecological criteria are standardized according Okotex: pH value of Cotton fabric is 6.2, of silk fabrics is 6.

4p chauchaungayxua11 23-03-2021 34 6   Download

The fruits of Lucknow-49, red fleshed variety and apple guava were collected from the orchard of the College of Agriculture Jabalpur (M.P.). The fruits were collected from the winter season crop (2007).

5p cothumenhmong7 09-09-2020 11 1   Download

Using existing scientific propositions as a basis, the structure of bar commercial soap is made. It has been stated that the macrostructure of commercial soap takes the form of hexagonal prismatic cells, which are the most energetically beneficial form of full-wall crystallization structures of the system. Maximum mechanical strength is achieved within concrete time after forming the soap mass into the cake soap form.

7p kethamoi7 26-08-2020 9 2   Download

The effect of pre harvest spraying of calcium chloride (CaCl2) and calcium nitrate (Ca NO3) @ 0.5 and 1% on shelf life and quality attributes of mango cvs Dashehari and Amrapali was investigated. Pre harvest spray was carried out on fully grown mango trees prior to one month of harvesting following second subsequent spray, 15 days after of first one. Full ripe fruits of both the cultivars were packed in brown papers bags after washing and surface air drying and stored under ambient condition (36 ± 20C at 75 ± 3% RH).

7p angicungduoc6 20-07-2020 7 1   Download

The fruits of Lucknow -49,Red fleshed variety and Apple guava were collected from the orchard of the College of Agriculture Jabalpur (M.P.).The fruits from the winter season crop (2007).

7p angicungduoc6 20-07-2020 10 1   Download

The fruits of Lucknow - 49, Red fleshed variety and Apple guava were collected from the orchard of the College of Agriculture Jabalpur (M.P.).The fruits from the winter season crop(2007).

9p trinhthamhodang6 09-07-2020 13 1   Download

Phosphogypsum is a by-product of the wet phosphoric acid production. In this study, chemical compositions of phosphogypsum waste (PG) in Hai Phong diammonium phosphate plant (DAP1) and Lao Cai diammonium phosphate plant (DAP2) in Viet Nam were surveyed for the purpose of gypsum recovery by P2O5 , F removal to meet TCVN11833 for use treated gypsum as cement retarder. Studies of impurities P2O5, F, TOC removal by sulfuric acid 10 % at 28 oC was presented.

10p angicungduoc5 13-06-2020 9 0   Download

A study on purification of humic acid (HA) isolated from press mud(PM) was conducted at Organic Farming Research Institute( OFRI), UAS, Raichur during 2017-18 with distilled water as a purifying agent in the place of HCl-HF mixture to purify isolated HA from press mud. The conventional procedure makes use of mineral acids and dialysis step. Standard procedures were used to extract and fractionate HA from press mud.

7p nguaconbaynhay3 07-02-2020 12 0   Download

This research was conducted to prepare apricot jam from the pulp of fresh mature apricots by using artificial sweeteners .Apricots were washed with clean water to remove dust particles. After sorting and pitting, apricots were cut into two halves and dipped in 0.1% citric acid solution to avoid browning. The pulp of apricots was extracted by using plumper. Apricot pulp was heated to get the desired consistency. Low heating was continued and brix were noted after every 20 minutes. Pectin with small amount of nonnutritive sweeteners were dissolved separately and added to the mixture.

5p quenchua2 18-12-2019 12 0   Download

ZSM-5 zeolites are widely used as catalysts in the oil refi ning and petrochemical industry due to their outstanding catalytic performance. Despite their undisputed applications, the relative small pore size of ZSM-5 zeolites often imposes intra-crystalline diff usion limitations for reactant molecules, provoking the lower catalyst utilisation. To alleviate such limitations, in this work, an additional network of mesopores has been introduced by the post-synthesis modifi cation.

6p quenchua 27-09-2019 23 0   Download

The present study investigates changes in the inorganic ions, proline, and endogenous abscisic acid (ABA) contents of the apoplastic and symplastic compartments of leaves from drought-tolerant (Yakutiye) and droughtsensitive (Zulbiye) cultivars of the common bean (Phaseolus vulgaris L.). Drought stress caused a decrease in leaf water potential and stomatal conductance in both cultivars.

10p vivant2711 01-02-2019 11 1   Download

Silane and NaOH were used to treatment bamboo shoot culm sheath fiber. After treatment, the interfacial shear strength of fiber with MAPP increased by 24% and 30% respectively. Alkali treatment has much effect on bamboo shoot culm sheath fiber than silane treatment. Washing NaOH treatment bamboo fiber with acetic acid was improved IFSS of bamboo fiber and polypropylene (PP) and strength of composite PP reinforced by bamboo fiber.

6p uocvong01 24-09-2015 46 3   Download

The Chempolis process is also based on using formic and acetic acid (Rousu & Rousu 2000, Rousu et al. 2003, Anttila et al. 2006) as cooking chemicals to produce pulp, biochemicals and biofuels from non-wood raw materials. Formic acid is the main component in cooking liquor. After cooking, the pulp is washed and pressed in several stages with formic acid. The last washing stage is performed at a high pulp consistency with performic acid. Then, the pulp is bleached with alkaline peroxide. Spent cooking liquor can be evaporated to 90% dry solids and incinerated.

155p loixinloi 08-05-2013 63 8   Download

A one-gram, oven-dried sample of extractive-free bamboo was placed in a 150 mL beaker. Fifteen mL of cold sulfuric acid (72 percent) was added slowly while stirring and mixed well. The reaction proceeded for two hours with frequent stirring in a water bath maintained at 20 o C. When the two hours had expired, the specimen was transferred by washing it with 560 mL of distilled water into a 1,000 mL flask, diluting the concentration of the sulfuric acid to three percent. An allihn condenser was attached to the flask. The apparatus was placed in...

78p loixinloi 08-05-2013 35 3   Download

Escherichia colifatty acid cyclopropane synthase (CFAS) was overproduced and purified as a His6 -tagged protein. This recombinant enzyme is as active as the native enzyme with aKmof 90lMforS-AdoMet and a specific activity of 5·10 )2 lmolÆmin )1 Æmg )1 . The enzyme is devoid of organic or metal cofactors and is unable to catalyze the wash-out of themethyl protons ofS-AdoMet to the solvent, data that do not support the ylidemechanism. Inactivationof the enzyme by 5,5¢-dithiobis-(2-nitrobenzoic acid) (DTNB), a pseudo first-order process with a rate constant of 1.

10p awards 05-04-2013 30 1   Download