scholarly journals Hydrogen sulfide and organic compounds removal in municipal wastewater using ferrate (VI) and ultraviolet radiation

2016 ◽  
Vol 4 (1) ◽  
pp. 7-14 ◽  
Author(s):  
Amirreza Talaiekhozani ◽  
Zeinab Eskandari ◽  
Marzieh Bagheri ◽  
Mohammad Reza Talaei ◽  
Malihe Salari
Keyword(s):  
Hydrogen Sulfide ◽  
Ultraviolet Radiation ◽  
Organic Compounds ◽  
Municipal Wastewater

scholarly journals The Influence of the Poles’ Lifestyle on the Quantity and Quality of Municipal Wastewater

2021 ◽  
Vol 31 (3) ◽  
pp. 265-275
Author(s):  
Ewelina Płuciennik-Koropczuk ◽  
Martyna Myszograj ◽  
Sylwia Myszograj
Keyword(s):  
Heavy Metals ◽  
Wastewater Treatment ◽  
Organic Compounds ◽  
Municipal Wastewater ◽  
Personal Care ◽  
Total N ◽  
Qualitative Characteristics ◽  
Total P ◽  
Wastewater Treatment Systems

Abstract The article presents lifestyle as an important factor determining the quantity and quality of municipal wastewater. The characteristic of wastewater in Poland has changed significantly in recent years. The qualitative characteristics of municipal wastewater indicate an increase of organic compounds and in the scope of micro-contaminants identified in them, e.g. nanoparticles, microplastics, pharmaceutical and personal care products or heavy metals. Therefore, the knowledge of parameters such as: BOD5, COD, total N, total P and suspension solids is no longer sufficient for the design and operation of wastewater treatment systems. Comprehensive research in this area is necessary to select those indicators that better describe the characteristics of wastewater.

Photocatalysed Oxidation of Toxic Organics

1987 ◽  
Vol 19 (3-4) ◽  
pp. 381-390 ◽  
Author(s):  
M. Brett Borup ◽  
E. Joe Middlebrooks
Keyword(s):  
Hydrogen Peroxide ◽  
Ultraviolet Radiation ◽  
Organic Compounds ◽  
Hydroxyl Radicals ◽  
Reaction Rate ◽  
Oxidation Process ◽  
Dimethyl Phthalate ◽  
First Order ◽  
Toxic Organics ◽  
Catalyzed Oxidation

The feasibility of treating water contaminated by two toxic organic compounds with an ultraviolet light catalyzed oxidation process using hydrogen peroxide as an oxidant is investigated. In this process hydrogen peroxide is decomposed by ultraviolet radiation producing hydroxyl radicals. The hydroxyl radicals will then oxidize organic compounds via a complex chain of radical reactions. Tests showed that this photooxidation process could successfully remove isophorone and dimethyl phthalate from contaminated waters. A reaction rate expression which adequately describes the process was developed. The reaction rate was found to be first order with respect to hydrogen peroxide concentration, zero order with respect to organic concentration and a function of ultraviolet radiation intensity. The reaction did not exhibit autocatalytic characteristics.

Predicting the Fate of Volatile Organic Compounds in Municipal Wastewater Treatment Plants

1992 ◽  
Vol 25 (4-5) ◽  
pp. 383-389 ◽  
Author(s):  
H. Melcer ◽  
J. Bell ◽  
D. Thompson
Keyword(s):  
Volatile Organic Compounds ◽  
Activated Sludge ◽  
Organic Compounds ◽  
Pilot Plant ◽  
Municipal Wastewater ◽  
Dynamic Models ◽  
Treatment Plant ◽  
Full Scale ◽  
Volatile Organic ◽  
Plant Data

Pilot plant and full scale investigations were carried out to determine the fate of selected volatile organic compounds (VOCs) in activated sludge aeration basins. Treatability parameters for each VOC were estimated from these investigations and used to calibrate TOXCHEM, computer-based steady state and dynamic models developed to predict the fate of VOCs in municipal activated sludge systems. The pilot plant was fed with wastewater from two different municipal sources. It was operated in parallel with a municipal treatment plant and was found to adequately simulate the performance of the full scale plant. Data suggest that the current models, calibrated with pilot plant data, may produce useful predictions of the fate of VOCs in full scale plants.

Electromediators in synthesis of sulfur organic compounds based on hydrogen sulfide and thiols

2010 ◽  
Vol 435 (1) ◽  
pp. 302-306 ◽  
Author(s):  
A. O. Okhlobystin ◽  
A. V. Okhlobystina ◽  
E. V. Shinkar’ ◽  
N. T. Berberova ◽  
I. L. Eremenko
Keyword(s):  
Hydrogen Sulfide ◽  
Organic Compounds

REACTIONS OF HYDROGEN SULFIDE WITH VARIOUS ORGANIC COMPOUNDS AT HIGH PRESSURES

1953 ◽  
Vol 18 (6) ◽  
pp. 748-752 ◽  
Author(s):  
T. L. CAIRNS ◽  
A. W. LARCHAR ◽  
B. C. McKUSICK
Keyword(s):  
Hydrogen Sulfide ◽  
Organic Compounds ◽  
High Pressures

scholarly journals A comparison of removal performance of volatile organic and sulfurous compounds between odour abatement systems

2018 ◽  
Vol 77 (11) ◽  
pp. 2657-2667 ◽  
Author(s):  
A. Shammay ◽  
I. Evanson ◽  
R. M. Stuetz
Keyword(s):  
Hydrogen Sulfide ◽  
Activated Carbon ◽  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Voc Removal ◽  
Biotrickling Filters ◽  
Volatile Organic ◽  
Sulfurous Compounds ◽  
Sulfide Species ◽  
Sewer Networks

Abstract Three types of odour abatement systems in sewer networks in Australia were studied for 18 months to determine the removals of different compounds. Six volatile sulfurous compounds and seven volatile organic compounds (VOCs) were further investigated. All types of odour abatement systems exhibited good removal of hydrogen sulfide with the biotrickling filters (BTFs) showing the highest consistent removal. Biofilters outperformed BTFs and activated carbon (AC) filters in the removal of dimethyl mono-, di- and tri-sulfide species at the low inlet concentrations typically found. AC filters exhibited little VOC removal with no compound consistently identified as having a removal greater than 0%. Biofilters outperformed BTFs in VOC removal, yet both had high removal variability.

FRACTIONATION OF ORGANIC COMPOUNDS IN WASTEWATER FROM MUNICIPAL SEWAGE SYSTEM - COMPARISON OF METHODS

2018 ◽  
Vol 171 (51) ◽  
pp. 25-39
Author(s):  
Małgorzata Makowska ◽  
Aleksandra Sowińska ◽  
Marcin Spychała
Keyword(s):  
Organic Compounds ◽  
Municipal Wastewater ◽  
Statistical Tests ◽  
Particle Separation ◽  
Laboratory Analysis ◽  
Municipal Sewage ◽  
Comparison Of Methods ◽  
Sewage System ◽  
Size Of Particles

The paper presents the overview and characteristics of three different methods of organic compounds determination in wastewater: method according to ATV, respirometric method and method with use of particle separation. The results of laboratory analysis of municipal wastewater composition carried out using each of the described methods are presented. Wastewater derived from sewage collector in Grodzisk Wlkp. The research was performed in 7 series, from October 2013 to May 2014. The results obtained using different methods were compared by statistical tests. The observed differences were the consequence of the contractually assumed coefficients and size of particles and the defects during manual particles separation.

The Determination of Free Sulfur in Soft Vulcanized Rubber by a Volumetric Method

1932 ◽  
Vol 5 (3) ◽  
pp. 360-362 ◽  
Author(s):  
W. D. Guppy
Keyword(s):  
Hydrogen Sulfide ◽  
Sulfuric Acid ◽  
Organic Compounds ◽  
Subsequent Oxidation ◽  
Vulcanized Rubber ◽  
Elementary State ◽  
Previously Treated ◽  
Mineral Sulfides ◽  
Free Sulfur

Abstract The methods so far proposed for the determination of the free sulfur in vulcanized rubber depend upon the removal of the sulfur by extraction of the rubber with hot acetone, and subsequent oxidation to sulfuric acid of the sulfur in the extract. The extract is liable however to contain, in addition to sulfur in the elementary state, organic compounds containing sulfur derived from the rubber resins, accelerator, or antioxidant. In the subsequent oxidation this sulfur will be oxidized to sulfuric acid to an extent which depends on the method of oxidation used. In the present work, a method of analysis has been developed which is more rapid than the existing methods, and in which it is considered that the determination of the sulfur present in the elementary state is less likely to be affected by organic compounds containing sulfur. It has been found that when vulcanized rubber placed in contact with a metal, such as tin or aluminum, is boiled in hydrochloric acid, hydrogen sulfide is generated by the action of the nascent hydrogen produced. This reaction occurred with rubber which had been previously treated with acid alone to decompose metallic sulfides, but no hydrogen sulfide was obtained from rubber which had been previously extracted with acetone and was free from metallic sulfides. As these results showed that the reactions were not due to the presence of mineral sulfides, or of sulfur combined with the rubber, it was concluded that the hydrogen sulfide was formed by the reduction of the free sulfur.

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