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Optimization of manganese adsorption by ferromanganese ore and humus mixture using three-factor response surface methodology

Optimization of manganese adsorption by ferromanganese ore and humus mixture using three-factor response surface methodology

N.M. Kamal1,2, H.A. Aziz1,3*, H. Hussin4

HIGHLIGHTS

    • Manganese adsorption from wastewater using mixture of ferromanganese ore and humus is proposed.
    • Dosage, pH and contact time are the main factors in governing effectiveness of Mn removal.
    • Optimization of the experimental factors using Response Surface Methodology yields an excellent removal of Mn.
    • R2 value from the regression analysis was 0.9783 which signifies that the fitness of the model is good.

ABSTRACT

In this study, mixture of ferromanganese ore and humus were used to investigate the optimum conditions of dosage, pH and contact time for manganese (Mn) adsorption by using Response Surface Methodology (RSM). Experimental design had involved three operating variables i.e. dosage (2 to 4 g), pH (3 to 7.5) and contact time (90 to 270 min) with an associated response of manganese adsorption (%). Experimental data was obtained from the adsorption study then fitted to a second order polynomial regression model. Regression analysis and analysis of variance (ANOVA) were used to examine the fitness of the model towards the data. R2 value from the regression analysis was 0.9783 which signifies that the fitness of the model is good. The F-value was 50.21 and the p-value (Prob >F) was less than 0.05 indicate that the model terms are significant at 95% confidence level. Optimum conditions given by the model were 3.79 g of the mixture dosage, pH of 6.47 and contact time of 124.59 min with 93.82% of Mn adsorption. These values had been successfully verified.

© 2018 Ababil Publishers. All rights reserved.

To cite this article: Kamal NM, Aziz HA, Hussin H. Optimization of manganese adsorption by ferromanganese ore and humus mixture using three-factor response surface methodology. Journal of Desalination and Water Purification 2018;10:13-18.

To link this article: http://ababilpub.com/download/jdwp10-3/

A review on cost effective municipal wastewater treatment options: Lessons for Sub-Saharan Africa

A review on cost effective municipal wastewater treatment options: Lessons for Sub-Saharan Africa

Gideon Abagna Azunre

HIGHLIGHTS

  • There is a high quality of treated water with the limited construction cost of wetlands.
  • A hybrid system of lagoon and wetland can also be used.
  • The constructed wetlands will serve as the final purification site for effluent.

ABSTRACT

Wastewater discharge contaminates both surface water and groundwater. Sub-Saharan African countries mostly found in the lower and middle-income status face difficulties in treating wastewater. Several forms of treating municipal wastewater have been adopted in these countries, which received critiques in the conventional literature. Therefore, the purpose of this study was to identify the major treatment technologies employed by Sub-Saharan African countries. This identified the major treatment technologies, such as stabilization ponds, constructed wetlands and aerated lagoons, that are mostly used in countries like Tanzania, Ghana and Kenya. The results show that there is a high quality of treated water with the limited construction cost of wetlands. As a result, the study ranked the constructed wetlands as the best. In order to address the critique of algae blooms and high-energy consumption of the existing technologies used in Sub-Saharan Africa, an emerging technology has been recommended. This technology makes use of algae to produce oxygen for bacteria to help in biochemical activity. This can help prevent the usage of aerators and blowers, which consume a lot of energy to introduce air. A hybrid system of lagoon and wetland can also be used to solve algae blooms. The constructed wetlands will serve as the final purification site for effluent from ponds before they discharge to surface water bodies.

© 2018 Ababil Publishers. All rights reserved.

To cite this article: Azunre GA. A review on cost effective municipal wastewater treatment options: Lessons for Sub-Saharan Africa. Journal of Desalination and Water Purification 2018;10:2-12.

To link this article: http://ababilpub.com/download/jdwp10-2/

Nanoparticles in heterogeneous photocatalytic treatment

Nanoparticles in heterogeneous photocatalytic treatment

Süreyya Meriç

Ensuring reliable access to affordable and safe sources of water is critical to both global health and economic development. Chemicals of emerging concern (CECs) have come in the agenda as an emerging issue [1] to evaluate performance of water treatment processes that urge the use of advanced technologies using new materials such as nanoparticles [2]. “Nano” particles have particular aspects that are favored as high surface areas, hyper-catalytic functions, tunable physical properties and faster kinetics [3]. Photocatalyst materials have been adapted for visible light activated disinfection by dye sensitized, plasmon sensitized and semiconductor sensitized routes. The mechanism of reactive oxygen specie (ROS) generation in these materials is generally driven through oxygen reduction reactions by electron injected into the conduction band of the host semiconductor. Semiconductors are stable under illumination, typically metal oxides, usually consist of the top of the valence band located at +3 eV or lower and most widely used as photocatalysts which can drive redox reactions under visible light (>400 nm) [4]…

© 2018 Ababil Publishers. All rights reserved.

To cite this article: Meriç S. Nanoparticles in heterogeneous photocatalytic treatment. Journal of Desalination and Water Purification 2018;10:1.

To link this article: http://ababilpub.com/download/jdwp10-1/

Regeneration of fouled nanofiltration membrane used in dye-house wastewater treatment

Regeneration of fouled nanofiltration membrane used in dye-house wastewater treatment

Mona A. Abdel-Fatah1,*, Omar E. Abdel-Salam2, Radwa Z. Abdel-Maoty3

HIGHLIGHTS

  • The aim of this study is the regeneration of fouled nanofiltration membrane.
  • It is used in dying process of textile wastewater treatment.
  • The goal is to increase its lifetime and therefore reduce the expenses.
  • The regeneration of fouled membrane is carried out by chemical treatment.
  • The influence of the chemicals on the used membrane’s surface is studied.

ABSTRACT

Textile dye-house industrial processing is considered a major source of considerable chemical pollution as it includes: pretreatment, dyeing, printing, and finishing. This type of industries needs the advanced treatment technology. Nanofiltration membrane is considered one of the most effective technologies. The aim of this study was the regeneration of fouled nanofiltration membrane used in dying process of textile wastewater treatment for increasing its lifetime and therefore reducing the expenses. The regeneration process for the fouled membrane was carried out using chemical treatment method. Different concentrations of sulfuric acid, acetic acid, sodium hydroxide, and EDTA were used for that purpose. The time and temperature varied in each case. Scanning electron microscopy (SEM), energy dispersive X-ray (EDX) and Fourier transform infrared spectroscopy (FTIR) were used to investigate the influence of the chemicals on the used membrane’s surface. Complete analysis proceeded to identify the best type of chemical cleaning. The factors affect the success of the cleaning process such as the nature of the foulant, type of cleaning agents, temperature, pH, concentration of the cleaning chemicals, and contact time were also investigated. The characteristics of the cleaned nanofiltration membrane were compared with the virgin and fouled membranes.

© 2017 Ababil Publishers. All rights reserved.

To cite this article: Abdel-Fatah MA, Abdel-Salam OE, Abdel-Maoty RZ. Regeneration of fouled nanofiltration membrane used in dye-house wastewater treatment. Journal of Desalination and Water Purification 2017;7:14-22.

To link this article: http://ababilpub.com/download/jdwp7-3/

Water quality index models and parameters in five different countries (Canada, USA, Australia, Malaysia and Iraq): A review

Water quality index models and parameters in five different countries (Canada, USA, Australia, Malaysia and Iraq): A review

Aymen Abdulmunem1,2,*, Amimul Ahsan1,3,*, M. Imteaz4

HIGHLIGHTS

  • An effective strategy in conveying water information is the water quality index (WQI).
  • It focuses on WQI models, quality parameters and comparison of WQI models in five countries.
  • Selection of water quality parameters and models is based on assessment, cost effectiveness and availability of data.
  • Iraq compared to the other four countries used in the study needs more attention to improve water quality.

ABSTRACT

Water is an important resource to human health, aquatic ecosystem, socioeconomic development, and food security. Therefore, in every part of the world, the presence of contaminants in natural freshwater causes serious environmental issues. Constant monitoring of water bodies using some quality parameters is required. In this study, turbidity, dissolved oxygen (DO), nitrate, fecal coliform (FC), total solids, pH, biochemical oxygen demand (BOD), temperature and phosphate were assessed. One of the most vital and effective strategies in conveying information related to water bodies is the water quality index (WQI). WQI is primarily a mathematical means of deriving a single value which shows the water quality level in certain water basins, e.g. lake, river or stream. For different regions, many WQIs have already been introduced by national and international agencies for water quality assessment considering various uses and control of contamination. This study focuses on a comprehensive review about WQI models, water quality parameters and comparison of using WQI models in five different countries, namely, Canada, USA, Australia, Malaysia and Iraq. Comparison of water quality and index models through these five countries reveals that the application and modification of WQI models can help to improve water quality. Also the selection of water quality parameters and index models is based on assessment, cost effectiveness and availability of data. Iraq compared to the other four countries used in the study needs more attention to improve water quality.

© 2017 Ababil Publishers. All rights reserved.

To cite this article: Abdulmunem A, Ahsan A, Imteaz M. Water quality index models and parameters in five different countries (Canada, USA, Australia, Malaysia and Iraq): A review. Journal of Desalination and Water Purification 2017;7:2-13.

To link this article: http://ababilpub.com/download/jdwp7-2/

Potable water scarcity is increasing day by day

Potable water scarcity is increasing day by day

Amimul Ahsan

Potable water scarcity is increasing day by day. Many countries, e.g. Japan, Singapore, Australia, UAE, Qatar, Kuwait, and KSA installed mega size desalination plants to cope up with this situation. Seawater/Saline water may available nearby but cannot use directly. Therefore, desalination is a popular technique to produce potable water from salty water for any purposes, e.g. domestic, agricultural, and commercial. However, the cost of installing a desalination plant is very high. Many developing and underdeveloped countries, e.g. Bangladesh cannot afford it although it is a suitable option to reduce water scarcity. The reverse osmosis (RO) is the best process among many desalination methods…

© 2017 Ababil Publishers. All rights reserved.

To cite this article: Ahsan A. Potable water scarcity is increasing day by day. Journal of Desalination and Water Purification 2017;7:1.

To link this article: http://ababilpub.com/download/jdwp7-1/

Journal of Desalination and Water Purification, Volume 7, Issue June 2017, Pages 1-22, Articles 1-3 (30 June 2017)

Journal of Desalination and Water Purification

Volume 7, Issue June 2017, Pages 1-22, Articles 1-3 (30 June 2017)

Editorial Board                                                     p. i

Acknowledgement to Reviewers                    p. i

Journal Information                                           p. ii

Contents                                                                p. iii

Articles                                                                   pp. 1-22

Ahsan A.
Potable water scarcity is increasing day by day.
Journal of Desalination and Water Purification 2017;7:1.

Abdulmunem A, Ahsan A, Imteaz M.
Water quality index models and parameters in five different countries (Canada, USA, Australia, Malaysia and Iraq): A review.
Journal of Desalination and Water Purification 2017;7:2-13.

Abdel-Fatah MA, Abdel-Salam OE, Abdel-Maoty RZ.
Regeneration of fouled nanofiltration membrane used in dye-house wastewater treatment.
Journal of Desalination and Water Purification 2017;7:14-22.

© 2017 Ababil Publishers. All rights reserved.

Volume 1, Issue November 2015
Volume 2, Issue March 2016
Volume 3, Issue June 2016
Volume 4, Issue September 2016
Volume 5, Issue December 2016
Volume 6, Issue March 2017

Articles JDWP

JDWP

Statistical analysis and optimization of paracetamol degradation with TiO2 thin film photoreactor using central composite design

Statistical analysis and optimization of paracetamol degradation with TiO2 thin film photoreactor using central composite design

Deniz İzlen Çifçi*, Tolga Tunçal

HIGHLIGHTS

  • TiO2 thin film photocatalytic treatment is appropriate to remove paracetamol.
  • Statistical analysis shows the effect of process parameters.
  • Paracetamol removal efficiency decreased with increasing initial paracetamol
  • Paracetamol removal efficiency increased with prolonging the reaction time.
  • Paracetamol efficiency increased with increasing H2O2 and pH up to optimum values.

ABSTRACT

Degradation of paracetamol by thin film (TF) photocatalytic oxidation was investigated under different process parameters by using a coated tubular quartz reactor (TQR). TF was characterized by scanning electron microscopy (SEM) and X-ray diffraction (XRD). A central composite design was also used to investigate the combined effect of initial paracetamol (acetaminophen, PAM) and H2O2 concentrations, pH and the photocatalytic reaction time. Kinetic rate of PAM degradation was obtained as 13.3×10-3 min-1 by using TF based UV/H2O2 system. Maximum paracetamol degradation can obtain as 87.9% at 70 mg/L, 66 µL/L, 7.4 and 123 min for paracetamol concentrations, H2O2 concentration, pH and photocatalytic reaction time, respectively. TF provides to increase kinetic rate for 4.3 times and also PAM removal was increased 2.2 times comparing the UV/H2O2 process. Obtained results indicated that the TF based photocatalytic process was appropriate to remove paracetamol.

© 2017 Ababil Publishers. All rights reserved.

To cite this article: Çifçi Dİ, Tunçal T. Statistical analysis and optimization of paracetamol degradation with TiO2 thin film photoreactor using central composite design. Journal of Desalination and Water Purification 2017;6:9-14.

To link this article: http://ababilpub.com/download/jdwp6-3/

Impacts of engineered nanoparticles (ENPs) on aquatic organisms and public health: A review

Impacts of engineered nanoparticles (ENPs) on aquatic organisms and public health: A review

Sharmin Yousuf Rikta1,*, Shafi Mohammad Tareq2

HIGHLIGHTS

  • Environmental implication of ENPs is one of the major concerns in scientific research world.
  • ENPs could have toxic effects on aquatic organisms (e.g., fish and invertebrates) and human health.
  • The ability of ENPs to translocate from one compartment to another is a key factor in their toxicity.
  • Appropriate technologies to identify ENPs might help in early detection of ENPs exposure.
  • Toxicity and life cycle assessment of ENPs in human and environment may help to reduce the problem.

ABSTRACT

At present engineered nanoparticles (ENPs) are of great scientific interest both for technological applications and environmental impacts. There are many scientific literatures which provide evidences of negative impacts of ENPs on aquatic organisms. Toxic effects of ENPs in aquatic system may affect the human health. The behaviour of ENPs in the aquatic environment is not properly understood due to the complexity of the aquatic system and lack of baseline data. In situ scientific research is needed for better understanding. This review article provides a holistic view on different issues of ENPs in aquatic system, such as, their entry routes and impacts on aquatic organisms. It also highlights the risk of ENPs exposure to human health via contaminated aquatic systems and control strategies.

© 2017 Ababil Publishers. All rights reserved.

To cite this article: Rikta SY, Tareq SM. Impacts of engineered nanoparticles (ENPs) on aquatic organisms and public health: A review. Journal of Desalination and Water Purification 2017;6:3-8.

To link this article: http://ababilpub.com/download/jdwp6-2/

 

Ozone applications in landfill leachate treatment: A perspective

Ozone applications in landfill leachate treatment: A perspective

Hamidi Abdul Aziz1,2,*, Salem S. Abu Amr3

A systematic waste management practices requires a good fundamental knowledge in civil engineering as it involves planning, design, construction, operation, monitoring, closure and decommissioning of a waste management systems. The waste disposal by landfilling as being widely practiced in developing countries, requires proper management and treatment of leachate. Landfill leachate is a liquid that seeps through solid waste in a landfill and extracts dissolved or suspended materials in the process. The environmental impact of leachate depends on leachate strength, proper leachate collection, and the efficiency of leachate treatment [1]. Leachate contains high amounts of organic compounds, ammonia, and heavy metals and sometimes contaminates ground and surface water Landfill leachate usually contains a complex variety of materials and organic compounds, such as humic substances, fatty acids, heavy metals, and many other hazardous chemicals…

© 2017 Ababil Publishers. All rights reserved.

To cite this article: Aziz HA, Abu Amr SS. Ozone applications in landfill leachate treatment: A perspective. Journal of Desalination and Water Purification 2017;6:1-2.

To link this article: http://ababilpub.com/download/jdwp6-1/