- Type of paper
: Paper in journal
Title: Elimination of Textile Dyestuffs from Water Solutions by
means of Isothermal Adsorption at 25 C
- Authors:
- Šver, Dubravka (10396)
- Cetina, Mario (132844)
- Bach-Dragutinović, Biserka (1330)
Journal: Tekstil
Number: 4
ISSN: 0492-5882
Volume: 40
Year: 1991
Pages: from 157 to 161
Number of references: 17
Language: hrvatski
Summary: Isothermal adsorption of variously constituted organic
dyestuffsfrom water solutions on natural adsorbents with high silicon
(IV)oxide component was studied. Isothermal adsorption, used in thetextile
industry, was carried out at 25 C. Three types ofdyestuffs were used:
substantive (direct) Solarrot B, basicBasacrylrot GL and metal complex
Lanasynreinrot 2BL. Followingadsorbents were used: kaoline and two
aluminium silicate naturalmixures with 34,52% SiO2, that is 31,25% SiO2.
The dyestuffquantity in the filtrate was spectrophotometrically
determined,by measuring pH and by determination of light
radiationreflectance on DATACOLOR. All results were obtained by means
ofcomputer. The investigation of dyestuffs showed, that naturalaluminium
silicates with increased part of amorphous siliconoxide are the most
convenient adsorbents, while kaoline did notshow a significant adsorptivity
of these dyestuffs.
Keywords: Isothermal adsorption, organic dyestuff adsorption, aluminosilicates, textile industry waste waters
- Type of paper
: Paper in journal
Title: Adsorption of Textile Dyestuffs at 60 C from Water
Solutions on Natural Adsorbents
- Authors:
- Šver, Dubravka (10396)
- Cetina, Mario (132844)
- Bach-Dragutinović, Biserka (1330)
Journal: Tekstil
Number: 1
ISSN: 0492-5882
Volume: 41
Year: 1992
Pages: from 1 to 6
Number of references: 12
Language: hrvatski
Summary: In this work the systems were used, which do not require
aspecial preparatory treatment in the process of adsorption oforganic
dyestuffs from water solutions. Three different types oforganic dyestuffs
were investigated: basic Basacrylrot GL, metalcomplex Lanasynreinrot 2BL
and direct (substantive) dyestuffSolarrot B. As adsorbers, kaoline and two
aluminium silicatenaturel mixtures with high content of amorphous silica
were used.The adsorption was carried out isothermally at the temperature
of60 C. The results were followed by spectrophotometry, bymeasuring pH of
the filtrate and by determination of lightradiation reflectance on
DATACOLOR. All results were obtained bymeans of computer. The
investigations showed that the temperatureof 60 C is suitable for the
adsorption of organic dyestuffs onnatural aluminium silicates (Which is
higher than that of 25 C),so waste water clarifying by using adsorption in
the textiledying plants can be recommended.
Keywords: Isothermal adsorption, organic dyestuff adsorption, aluminosilicates, textile industry waste waters
- Type of paper
: Paper in journal
Title: Surface-Active Agents of the Textile Industry
- Authors:
- Šver, Dubravka (10396)
- Čavlek, Zlatka (106070)
- Brkić, Branka (186543)
Journal: Tekstil
Number: 3
ISSN: 0492-5882
Volume: 42
Year: 1993
Pages: from 157 to 162
Number of references: 28
Language: hrvatski
Summary: As the use of water in the textile industry is great,
thequantities of effluents are huge too. The surface-aactive agentspollute
the textile effluents considerable. In higherconcentracions they can
endanger flora and fauna of watersystems, exerting influence for instance
on the decrease ofdyestuffs flocculation and retard the deposit of
suspendedparticles by diminishing the tension of water surface, as well
asby their dispersing action. The products of their decompositioncan be
often found in effluents, which can cause environmentalpollution.
For this reason the parametars for analytical evaluation ofeffluents and
their composition must be dealt with. The toxity of surface-active agents,
as well as lethal effect for fisg andlower organisms in water systems must
be determined. Particularregard is devoted to the composition of effluents
from theplants.
Keywords: Textile industry waste waters, tensides in waste waters, tensides, waste waters
- Type of paper
: Paper in journal
Title: Behaviour of tensides water solutions in contact with
clays
- Authors:
- Šver, Dubravka (10396)
- Čavlek, Zlatka (106070)
- Brkić, Branka (186543)
Journal: Tekstil
Number: 10
ISSN: 0492-5882
Volume: 43
Year: 1994
Pages: from 513 to 519
Number of references: 25
Language: hrvatski
Summary: Behaviour of water solutions of different tensides,which
are
used in textile industry,in a contact with natural aluminosilicates through
an adsorption process has been investigated.Anionactive,nonionic and
cationactive tensides have been studied,and as adsorbents were used natural
kaoline and a
mixture of aluminosilicates containing about 35% amorphous silica.By means
of a dinamic method of columns with the unstationar immobile layer the
influence of adsorbent quantity and concentration of tenside on the
adsorption process has been
investigated.Results were followed by electrical conductivity,
surface tension and pH values measurements of filtrate.
Keywords: Tensides,adsorption of tensides,tensides and clays,adsorption on aluminosilicates.
- Type of paper
: Paper in proceedings
Title: The appearance of tensides in waste water of textile
industry
- Authors:
- Šver, Dubravka (10396)
- Editors
- Šver, Dubravka (10396)
Proceedings title: Zbornik radova prvog simpozija hrvatskog društva za tenzide
Language: engleski
Place: Rovinj, Republika Hrvatska
Year: 1993
ISBN/ISSN: 0492-5882
Pages: from 402 to 412
Meeting: Prvi simpozij hrvatskog društva za tenzide/First symposium of Croatian society for surfactants
Held: from 05/25/93 to 05/27/93
Summary: The textile waste waters have often a significant amount of
tensides, which can be used in textile fabrics for washing,emulgation,
dispergation, solubilization, egalization, weting and softening. In a high
concentration they can imperil flora and fauna of water systems. They
decrease dyestuff floculation,retard the setling down of suspended
substances by decreasing of water surface tension and they have a
dispergated influence in water.
In waste waters there are often their products of degradation,which have
also a bad influence on the environment. The tenside toxicity and a lethal
effect must be determined for fishes and other low organisms of water
systems.
The behaviour of tensides in contact with clays and carbon in water
solution is significant because of the possibility: of their removal,
investigations of the influence on the environment(soil) and ore flotation.
We have investigated the physical-chemical behaviour of water solutions of
anionactive and unionic tensides in a process of adsorption on kaoline, a
natural mixture of aluminosilicates and an amorphous silica (39 % SiO2),
activated carbon and a mixture of activated carbon and kaoline (1:1).
Keywords: Textile industry waste waters, tensides, tensides adsorption,aluminosilicates, activated carbon
- Type of paper
: Summary in proceedings
Title: The adsorption of textile dyestuffs on natural adsorbents
at 25 C
- Authors:
- Šver, Dubravka (10396)
- Cetina, Mario (132844)
- Bach-Dragutinović, Biserka (1330)
- Editors
- Šver, Dubravka (10396)
Proceedings title: XII Sastanak kemičara Hrvatske
Language: hrvatski
Place: Zagreb
Year: 1991
ISBN/ISSN: 0492-5882
Pages: from 210 to 210
Meeting: XII Sastanak kemičara Hrvatske i Simpozij ekoracionalnost u razvoju kemijskih tehnologija
Held: from 02/11/91 to 02/13/91
Summary: Coulored waste waters from dyeing plants could endanger
flora and fauna in natural recipients. Different methods could be used for
dyestuffs removal from textile finishing waste waters, but one ofmost used
is adsorption method.
Isothermal adsorption of textiles organic dyestuffs from water solutions at
25 C was investigated on natural aluminosilicates.Three types of dyestuffs:
substantive, basic and metal complex was investigated. Kaoline and two
natural mixtures of aluminosilicates with high content of silica were used.
The results were followed by spectrophotometry, by measuring of pH values
and by determination of light radiation reflectance on DATACOLOR.
The adsorbent type and dyestuff chemical constitution have influence on
adsorption difference.
Keywords: Textile industry waste water, isothermal adsorption,aluminosilicates, kaoline, organic dyestuffs
- Type of paper
: Summary in proceedings
Title: The influence of high temperature on the adsorption of
organic dyestuffs from water solutions
- Authors:
- Šver, Dubravka (10396)
- Cetina, Mario (132844)
- Bach-Dragutinović, Biserka (1330)
- Editors
- Šver, Dubravka (10396)
Proceedings title: XII Sastanak kemičara Hrvatske
Language: hrvatski
Place: Zagreb
Year: 1991
ISBN/ISSN: 0492-5882
Pages: from 211 to 211
Meeting: XII Sastanak kemičara Hrvatske i Simpozij ekoracionalnost u razvoju kemijskih tehnologija
Held: from 02/11/91 to 02/13/91
Summary: Waste waters from textile dyeing processes often have high
temperature, so they can imperil flora and fauna in waterstreams.
The coloured waste water from dyeing machines could be immediately
purificated and reused in textile processes, so the matter and energy could
be economized.
The influence of high temperature on the adsorption of textile organic
dyestuffs from water solutions on natural aluminosilicates was
investigated. The results were followed by spectrophotometry and by
determination of light radiation reflectance on DATACOLOR. All results were
obtained by means of computer. The investigations showed that the high
temperature is suitable for the adsorption of dyestuffs on
aluminosilicates.
Keywords: Dyeing plants waste waters, isothermal adsorption, organic dyestuffs, aluminosilicates
- Type of paper
: Summary in proceedings
Title: Changes of properties of tenside water solutions in the
adsorption process
- Authors:
- Šver, Dubravka (10396)
- Čavlek, Zlatka (106070)
- Cetina, Mario (132844)
- Editors
- Šver, Dubravka (10396)
Proceedings title: XIII Skup Hrvatskih kemičara
Language: hrvatski
Place: Zagreb
Year: 1993
ISBN/ISSN: 0492-5882
Pages: from 275 to 275
Meeting: XIII Skup Hrvatskih kemičara i II Simpozij ekološka racionalnost u razvoju kemijskih tehnologija
Held: from 02/08/93 to 02/10/93
Summary: Waste waters of textile industry can cause environment
pollution.
Tenside contains water can imperil flora and fauna of watersystems.
Tensides can be removed by different methods, mostly by biodegradation,
what demands a lot of time and big area In this work the behaviour of
tenside contains water after a contact with different types of soils and
activated carbon have been investigated.
Three types of tensides and two types of soils have been examinated by
dynamic method of column, and the results have been followed by pH values,
electrical conductivity and solutions surface tension measurements.
Keywords: Tensides, textile industry waste waters, tenside adsorption, soils, activated carbon
- Type of paper
: Summary in proceedings
Title: The influence of some parameters on the adsorption of
tensides from water solutions
- Authors:
- Šver, Dubravka (10396)
- Čavlek, Zlatka (106070)
- Brkić, Branka (186543)
- Editors
- Šver, Dubravka (10396)
Proceedings title: XIII Skup Hrvatskih kemičara
Language: hrvatski
Place: Zagreb
Year: 1993
ISBN/ISSN: 0492-5882
Pages: from 276 to 276
Meeting: XIII Skup Hrvatskih kemičara i II Simpozij ekološka racionalnost u razvoju kemijskih tehnologija
Held: from 02/08/93 to 02/10/93
Summary: Textile industry waste waters often have remarkable
quantities of tensides, which can cause serious problems in waterstreams.
The influence of adsorbent quantity, concentration of tensides and pH
values on tensides adsorption from water solution at natural
aluminosilicates were investigated.
In a dynamic method of unstationar immobile layer anion-active and
non-ionic tensides were investigated.
The results were followed by physical-chemical methods (surface tension,
electrical conductivity and pH values measurements of solutions).
Keywords: Tensides, textile industry waste waters, adsorption on natural aluminosilicates.
- Type of paper
: Summary in proceedings
Title: The role of science in regeneration of textile industry
waters
- Authors:
- Šver, Dubravka (10396)
- Editors
- Šver, Dubravka (10396)
Proceedings title: Uloga znanosti u održivom razvoju
Language: hrvatski
Place: Zagreb
Year: 1993
Pages: from 39 to 39
Meeting: Znanost u održivom razvoju-Filozofski fakultet Zagreb
Held: from 03/11/93 to 03/13/93
Summary: Repubic of Croatia is mostly oriented on textile
industry.Therefore it is understandible that water consumption, quantity
and quality of waste waters are followed in order to decrease their bad
influence on environment. In this case scientific attainments have a high
role in domestic and world level, which can be aplicated on different
processes.
Rationalization and optimalization of processes are speciffically used in
textile industry today.
Economical machines, optimum chemical and physical-chemical systems are
being used also. New synthetic textile materials are produced with improved
properties, the energy is saved by exchange of heat.
The processes and substances dangerous to environment are being expeled
from usage. Waste waters before dropping into the recipient are being
subjected to modern ways of treatments, which do not demand a large
expense, big spaces and a lot of time.
Rationalization of water spending are reached by recycling of regenerated
water into the technological process.
Keywords: Textile industry waste waters, water regeneration, science in water regeneration, rationalization water consumption
- Type of paper
: Summary in proceedings
Title: Influence of Different Adsorbents on Anionactive Tenside
in Waste Waters
- Authors:
- Šver, Dubravka (10396)
- Čavlek, Zlatka (106070)
- Brkić, Branka (186543)
- Editors
- Šver, Dubravka (10396)
Proceedings title: Sažeci radova XIV skupa hrvatskih kemičara i IV hrvatskog simpozija
Language: hrvatski
Place: Zagreb
Year: 1995
ISBN/ISSN: 0492-5882
Pages: from 396 to 396
Meeting: XIV skup hrvatskih kamičara i IV hrvatski simpozij
Held: from 02/06/95 to 02/08/95
Summary: Comparative investigations of different adsorbents in water
solutions of anionactive tenside GERBASOL and waste waters,
which contain this tenside,have been investigated.Activated carbon,
zeolite and a mixture of aluminosilcates with amorphous
silica were used as adsorbents.In a dynamic method by using of
a column the results were followed by electrical conductivity,surface
tension and pH values measurements of filtrate in rations of 50 cm3.
Keywords: Tensides,Gerbasol,anionactive tensides,adsorption,activated carbon,zeolite,aluminosilicates.
- Type of paper
: Summary in proceedings
Title: Comparative Investigations of Different Adsorbents for the
Removal of Zinc from Waste Waters
- Authors:
- Šver, Dubravka (10396)
- Cetina, Mario (132844)
- Čavlek, Zlatka (106070)
- Editors
- Šver, Dubravka (10396)
Proceedings title: Sažeci radova XIV skupa hrvatskih kemičara i IV hrvatskog simpozija
Language: hrvatski
Place: Zagreb
Year: 1995
ISBN/ISSN: 0492-5882
Pages: from 393 to 393
Meeting: XIV skup hrvatskih kamičara i IV hrvatski simpozij
Held: from 02/06/95 to 02/08/95
Summary: The behaviour of different adsorbents,ie. ione
exchangers:zeolite,bentonite and a mixture of aluminosilicates and
amorphous silica for the removal of Zn+2 ione from water
solutions different concentrations has been investigated.
In a contact method of adsorption different adsorbent quantity
has been used and the results have been followed by chemical
analysis,electrical conductivity and pH values measurements in
filtrate.
Keywords: Zinc,ione exchange of zinc,adsorption of zinc,zeolite,bentonite, aluminosilicates.
- Type of paper
: Summary in proceedings
Title: Behaviour of Waste Waters in a Contact with Different
Adsorbents
- Authors:
- Šver, Dubravka (10396)
- Čavlek, Zlatka (106070)
- Brkić, Branka (186543)
- Editors
- Šver, Dubravka (10396)
Proceedings title: Zbornik sažetaka izlaganja na posterima
Language: hrvatski
Place: Zagreb
Year: 1994
ISBN/ISSN: 0492-5882
Pages: from 11 to 11
Meeting: Savjetovanje "Tekstilni dani Zagreb 1994"
Held: from 02/02/94 to 02/03/94
Summary: Adsorbents on base of aluminosilcates: kaoline,zeolite,a
mixture
of aluminosilicates with a high amount of amorphous silica and
activated carbon have been investigated in this work.Cotton
industry waste waters with the tenside GERBASOL in a column
have been investigated,and the results have been followed by
electrical conductivity,surface tension and pH measurements
of filtrates in rations of 50 cm3.
Keywords: Tenside GERBASOL,cotton industry waste water, kaoline,zeolite, aluminosilicates,adsorption.
- Type of paper
: Summary in proceedings
Title: Removal of Zinc from Waste Waters by Zeolite A
- Authors:
- Šver, Dubravka (10396)
- Čavlek, Zlatka (106070)
- Cetina, Mario (132844)
- Editors
- Šver, Dubravka (10396)
Proceedings title: Zbornik sažetaka izlaganja na posterima
Language: hrvatski
Place: Zagreb
Year: 1994
ISBN/ISSN: 0492-5882
Pages: from 12 to 12
Meeting: Savjetovanje "Tekstilni dani Zagreb 1994"
Held: from 02/02/94 to 02/03/94
Summary: Ione exchange is a method of removal of metals cations from
water solutions.Zn+2 cations have been removed from water
solutions by using of zeolite A as adsorbents,and the results have been
followed by chemical analysis,electrical conductivity
and pH measurements of filtrates in rations of 50 cm3 by a static and a
dynamic method of adsorption.
Keywords: Removal of zinc,ione exchange of zinc,zeolite A,adsorption of zinc.