scholarly journals Worldwide Research Analysis on Natural Zeolites as Environmental Remediation Materials

2021 ◽  
Vol 13 (11) ◽  
pp. 6378
Author(s):  
Fernando Morante-Carballo ◽  
Néstor Montalván-Burbano ◽  
Paúl Carrión-Mero ◽  
Kelly Jácome-Francis
Keyword(s):  
Environmental Remediation ◽  
Waste Treatment ◽  
Adsorption Properties ◽  
Natural Zeolites ◽  
Removal Of Heavy Metals ◽  
Long Time ◽  
Notable Increase ◽  
Accelerated Growth ◽  
Treatment Alternatives ◽  
Research Analysis

Society faces a significant problem in regards to the spread of harmful products in the environment, primarily caused by accelerated growth and resource consumption. Consequently, there is a need for materials to be processed in less harmful ways and to remedy the contaminated sources they generate. Microporous materials have been studied for a long time and are used in waste treatment alternatives. Natural zeolites, on which this study is based, are attractive to the scientific and technological communities, due to their numerous applications as decontaminants and adsorption properties. This study analyzes the intellectual structures of publications related to natural zeolites in environmental remediation, using bibliometric methods to determine their volumes and trends. The methodology comprises of an analysis based on 1582 articles, using VOSviewer software, with data from 1974 to 2020, via the Scopus database. Results reflect a notable increase in publications from the end of the 1990s; the greatest contribution in the area comes from Eurasian countries. The study considers that development in this line of research will continue to increase and serve as a great contribution to preserve the environment in coming years, with themes that focus on water treatment (e.g., drinking water, wastewater, greywater), removal of heavy metals, ammonium, ammonia, and construction.

STRATEGI PENGEMBANGAN BUDAYA KULINER TRADISIONAL PADA BAKPIA DAN WINGKO BABAT XYZ

2021 ◽  
Vol 10 (1) ◽  
pp. 194
Author(s):  
Maria Maria
Keyword(s):  
Research Method ◽  
Matrix Analysis ◽  
Literature Study ◽  
Diversification Strategy ◽  
Marketing Process ◽  
Long Time ◽  
The Right ◽  
Culinary Culture ◽  
Depth Interviews ◽  
Research Analysis

This research examines the development of traditional culinary culture,  Bakpia and Wingko Babat XYZ with the aim of preserving the local culinary heritage located in Bantul. Bakpia and Wingko Babat XYZ  is a special traditional business place that sells traditional Yogyakarta food in the Bantul area which still uses traditional methods. This business has been around for a long time since 1997. Lack of the right strategy is the cause when local and foreign visitors do not know much information about the culinary business of Bakpia and Wingko Babat XYZ. Based on this, this study aims to identify and analyze the marketing process carried out by Bakpia and Wingko Babat XYZ, to determine the potential of traditional culinary culture and to explore strategy formulations in Bakpia and Wingko Babat XYZ. The research method in this study is a qualitative research method, by conducting direct and in-depth interviews with key persons, observation, and literature study. The qualitative method used is descriptive qualitative which will describe how the right strategy is based on the results of the analysis. The interview data were analyzed by several stages, namely the SWOT stage in the internal and external environment, the weight and ranking calculation stage, the IFE-EFE and IE matrix analysis stage, and the conclusion stage. In the research analysis, the IFE and EFE matrix values were obtained, where the IFE value was 2.774 and the EFE value was 2.842. This condition shows that Bakpia and Wingko Babat XYZ  is in the V quadrant position, which means Hold and Maintain, in this position the right strategy is market penetration and product development, and in the SWOT quadrant in quadrant II Cobination supports the Diversification strategy, this is requires making alternative strategies that can be used to increase existing strengths so that they can overcome threats.Keywords: culinary culture, SWOT, IE.AbstrakPenelitian ini meneliti tentang  budaya kuliner tradisional yaitu Bakpia dan Wingko Babat XYZ dengan tujuan untuk menjaga warisan budaya kuliner lokal yang terletak di Bantul. Bakpia dan Wingko Babat XYZ merupakan tempat usaha tradisional khusus yang menjualkan makanan tradisional khas Yogyakarta di daerah bantul yang masih menggunakan cara-cara tradisional. Usaha ini sudah lama berdiri sejak 1997. Kurangnya strategi yang tepat menjadi penyebab ketika pengunjung lokal maupun mancanegara tidak mengetahui banyak informasi mengenai usaha kuliner Bakpia dan Wingko Babat XYZ. Berdasarkan hal tersebut, penelitian ini bertujuan untuk mengidentifikasi dan menganalisa proses pemasaran yang dilakukan Bakpia dan Wingko Babat XYZ, untuk mengetahui potensi budaya kuliner tradisional dan mengeksplorasi formulasi strategi di Bakpia dan Wingko Babat XYZ. Metode  penelitian pada penelitian ini adalah metode penelitian kualitatif, dimana dengan melakukan wawancara kepada key person secara langsung dan mendalam, observasi, dan  studi pustaka. Metode kualitatif  yang  digunakan yaitu kualitatif deskriptif yang akan mendeskripsikan bagaimana strategi yang tepat berdasarkan hasil analisis. Data  wawancara dianalisis dengan beberapa tahap-tahapan yaitu tahap SWOT pada lingkungan internal dan eksternal, tahap perhitungan bobot dan peringkat, dan tahap analisis matriks IFE-EFE dan IE, serta tahap kesimpulan. Pada analisis penelitian diperoleh nilai matriks IFE dan EFE, dimana nilai IFE sebesar 2,774 dan nilai EFE sebesar 2,842. Kondisi ini menunjukkan bahwa Bakpia dan Wingko Babat XYZ  berada pada posisi kuadran V yaitu berarti Hold and Maintain, pada posisi ini  strategi yang  tepat adalah penetrasi pasar dan pengembangan produk, serta pada kuadran SWOT  pada kuadran II Cobination mendukung stategi Diversifikasi, hal ini mengharuskan membuat alternative strategi yang dapat digunakan untuk meningkatkan Kekuatan yang ada sehingga dapat mengatasi ancaman.Kata Kunci: budaya kuliner, SWOT, IE. Author:Maria : Institut Seni Indonesia Yogyakarta References: Agustim, W., & Nurhidayat, M. (2020). Analisis Matrik IE pada UMKM Berbasis Produk Pertanian Kelompok Wanita Pelaku Usaha Tanaman Hias di Desa Sidomulyo Kota Batu. Referensi: Jurnal Ilmu Manajemen dan Akuntansi, 8(1), 73-78. https://doi.org/10.33366/ref.v8i1.1760.David, Fred R. 2016, Manajemen Strategis, Edisi 15. Jakarta: Salemba Empat.Evelyn, E. (2018). Analisis Manajemen Strategi Bersaing Dengan Matriks Ie, Matriks Swot Dan Matriks Qspm Pada Pt. Xyz. Jurnal Manajemen Bisnis dan Kewirausahaan, 2(4), 99-105. http://dx.doi.org/10.24912/jmbk.v2i4.4869.Rangkuti, Freddy. (2015). Analisis SWOT : Teknik Membedah Kasus Bisnis (Cara Perhitungan Bobot, Rating dan OCAI). Jakarta: PT Gramedia Pustaka Utama.Retnawati, L. (2018). Perencanaan Strategis Si/Ti dengan Metode Analisa Swot dan BSC untuk Meningkatkan Daya Saing di Universitas XYZ. JISKA (Jurnal Informatika Sunan Kalijaga), 2(3), 135-142. https://doi.org/10.14421/jiska.2018.23-02.Sugiyono. (2016). Metode Penelitian: Kuantitatif, Kualitatif dan R&D. Bandung: Alfabeta.Tyas, S. K., & Chriswahyudi, C. (2017). Perencanaan Strategi Pemasaran dengan Pendekatan Matrik IE, SWOT dan AHP untuk Mendapatkan Alternatif Strategi Prioritas. Prosiding Semnastek. https://jurnal.umj.ac.id/index.php/semnastek/article/view/1989/1632.

Selective Adsorption Properties and Stable Solidification of Cs by Insoluble Ferrocyanide Loaded Zeolites

2013 ◽  
Author(s):  
Yuki Ikarashi ◽  
Rana Syed Masud ◽  
Tomonori Nakai ◽  
Hitoshi Mimura ◽  
Eiji Ishizaki ◽  
...  
Keyword(s):  
Environmental Remediation ◽  
Cooling System ◽  
Selective Adsorption ◽  
Distribution Coefficients ◽  
Activity Level ◽  
Natural Zeolites ◽  
Zeolite X ◽  
Calcination Temperatures ◽  
X Zeolites ◽  
Cs Ions

In Fukushima NPP-1, large amounts of high-activity-level water (HALW) accumulated in the reactor, turbine building and the trench in the facility is treated by circulating injection cooling system. The development of highly functional adsorbents and stable solidification method contributes to the advancement of the decontamination system and environmental remediation. The present study deals with (1) preparation of insoluble ferrocyanide loaded zeolites, (2) selective uptake of Cs+ in seawater, (3) estimation of Cs immobilization ratio and stable solidification. Various kinds of Cs-selective composites loaded with insoluble ferrocyanides (CoFC, NiFC) into the zeolites (zeolite A (A51, A-51J), zeolite X (LSX), chabazite (modified chabazite) and natural mordenite (SA-5)) matrices have been prepared using successive impregnation/precipitation methods by Tohoku University. As for Cs+ adsorption, these composites had relatively large uptake (%) above 95%, distribution coefficients (Kd) above 103 cm3/g and excellent adsorption kinetics even in seawater. The immobilization ratio (%) of Cs for the CoFC saturated with Cs+ was estimated at different calcination temperatures up to 1,200°C in advance. The immobilization ratio was less than 0.1% above 1,000°C, indicating that the adsorbed Cs+ ions are completely volatilized and insoluble ferrocyanides had no immobilization ability for Cs. In contrast, the insoluble ferrocyanide-loaded zeolites had excellent Cs immobilization ability; in the case of insoluble ferrocyanide-loaded natural zeolites (NiFC-SA-5, CoFC-modified chabazite), the immobilization ratio was above 99% and 96% even after calcination at 1,000°C and 1,100°C, respectively, indicating that nearly all Cs ions are immobilized in the sintered solid form. On the other hand, the immobilization ratio for the insoluble ferrocyanide-loaded A and X zeolites (NiFC-A (A51, A51J), NiFC-X) tended to decrease with calcining temperature; for example, the immobilization ratio for NiFC-X at 1,000°C and 1,100°C was estimated to be 74.9% and 55.4%, respectively, and many spots concentrating Cs were observed on the surface. The difference in immobilization behavior between natural zeolites and synthetic ones is probably due to the phase transformation and surface morphology at higher temperature above 1,000°C. The stable solidification of insoluble ferrocyanides was thus accomplished by using the excellent Cs immobilization abilities of zeolite matrices (Cs trapping and self-sintering abilities).

scholarly journals Investigating Marital Infidelity from the Perspective of Payame Noor and Azad Universities’ Students in Bileh Savar County in 2015

2017 ◽  
Vol 11 (8) ◽  
pp. 124
Author(s):  
Mohsen Alayi ◽  
Azam Faridi
Keyword(s):  
Complete Separation ◽  
Descriptive Statistics ◽  
The Past ◽  
Research Survey ◽  
Frequency Table ◽  
Marital Infidelity ◽  
Research Population ◽  
Long Time ◽  
Married Students ◽  
Research Analysis

Infidelity is one of the problems which families are involved in and it goes forward to complete separation. Of course, this problem existed long time ago, with this difference that infidelity and polygamy were common categories in families in the past and they were a privilege especially for men. Sometimes, even women themselves were looking for a wife for their husband. However, at the present time, polygamy is not considered as a privilege and value and even women are not willing to share their husband with another woman. This subject has become a problem in families. The research population consisted of students (male and female) of Payame Noor and Azad Universities in Bileh Savar County. All students of Payame Noor University were 500 and students of Azad University were 1000. Since there were no accurate statistics of married students at both universities, and also due to the lack of financial ability and high costs of research analysis, 150 students were randomly selected as the sample of research. Survey research method and questionnaire were used for data collection. Statistical methods were applied in the forms of descriptive statistics (frequency table, percent, charts) and referential statistics (Pearson test, t-test).

Application of an Environmental Remediation Methodology: Theory vs. Practice—Reflections and Two Belgian Case Studies

2011 ◽  
Author(s):  
W. Blommaert ◽  
K. Mannaerts ◽  
S. Pepin ◽  
B. Dehandschutter
Keyword(s):  
Case Studies ◽  
Environmental Remediation ◽  
Waste Treatment ◽  
Stakeholder Involvement ◽  
Sampling Strategy ◽  
Contaminated Sites ◽  
Contaminated Site ◽  
Chemical Contamination ◽  
First Case ◽  
The Impact

Like in many countries, polluted industrial sites also exist in Belgium. Although the contamination is purely chemical in most cases, they may also contain a radioactive component. For chemically contaminated sites, extensive regulations and methodologies were already developed and applied by the different regional authorities. However and essentially because radioactivity is a federal competence, there was also a necessity for developing a legal federal framework (including an ER-methodology [1]) for remediation of radioactive contaminated sites. Most of the so-called radioactive contaminated sites are exhibiting a mixed contamination (chemical and radiological), and hence the development of such methodology had to be in line with the existing (regional) ones concerning chemical contamination. Each authority having their own responsibilities with regard to the type of contamination, this makes it more complicated and time-consuming finding the best solution satisfying all involved parties. To overcome these difficulties the legal framework and methodology — including the necessary involvement of the stakeholders and delineation of each party’s responsibilities — has to be transparent, clear and unambiguous. Once the methodology is developed as such and approved, the application of it is expected to be more or less easy, logic and straightforward. But is this really true? The aim of this document is to investigate as well the impact of factors such as the type of radioactive contamination — levels of contamination, related to NORM activity or not, homogeneous or heterogeneous, the differences in licensing procedures,… — on the application of the developed methodology and what could be the consequences in the long run on the remediation process. Two existing case studies in Belgium will be presented ([2]). The first case deals with a historical radium contaminated site, the second one with a phosphate processing facility still in operation, both with (very) low levels of radioactivity but containing very large volumes of contaminated materials. These case studies will demonstrate that, although the applied methodology will be the same in both cases, the impact of e.g. sampling strategy, scenario definitions, modelisations, final destination of the land, presence of chemotoxic components, dose or risk assessments, uncertainties, derivation of clean-up radionuclide guidelines, stakeholder involvement and waste treatment could be important on licensing, cost-estimate, planning and final outcome of the environmental remediation activities to be executed.

Environmental and Economic Assessment of Waste Treatment Alternatives Under Uncertainty

2001 ◽  
Vol 79 (5) ◽  
pp. 304-314 ◽  
Author(s):  
O. Jankowitsch ◽  
L. Cavin ◽  
U. Fischer ◽  
K. Hungerbühler
Keyword(s):  
Waste Treatment ◽  
Economic Assessment ◽  
Treatment Alternatives

scholarly journals Carbon Nanomaterials for the Treatment of Heavy Metal-Contaminated Water and Environmental Remediation

2019 ◽  
Vol 14 (1) ◽  
Author(s):  
Rabia Baby ◽  
Bullo Saifullah ◽  
Mohd Zobir Hussein
Keyword(s):  
Heavy Metal ◽  
Surface Area ◽  
Environmental Remediation ◽  
Carbon Nanomaterials ◽  
Heavy Metal Contamination ◽  
High Surface ◽  
High Surface Area ◽  
Contaminated Water ◽  
Removal Of Heavy Metals ◽  
Carbon Based Nanomaterials

Abstract Nanotechnology is an advanced field of science having the ability to solve the variety of environmental challenges by controlling the size and shape of the materials at a nanoscale. Carbon nanomaterials are unique because of their nontoxic nature, high surface area, easier biodegradation, and particularly useful environmental remediation. Heavy metal contamination in water is a major problem and poses a great risk to human health. Carbon nanomaterials are getting more and more attention due to their superior physicochemical properties that can be exploited for advanced treatment of heavy metal-contaminated water. Carbon nanomaterials namely carbon nanotubes, fullerenes, graphene, graphene oxide, and activated carbon have great potential for removal of heavy metals from water because of their large surface area, nanoscale size, and availability of different functionalities and they are easier to be chemically modified and recycled. In this article, we have reviewed the recent advancements in the applications of these carbon nanomaterials in the treatment of heavy metal-contaminated water and have also highlighted their application in environmental remediation. Toxicological aspects of carbon-based nanomaterials have also been discussed.

scholarly journals Zeolite-Rich Composite Materials for Environmental Remediation: Arsenic Removal from Water

2020 ◽  
Vol 10 (19) ◽  
pp. 6939
Author(s):  
Bruno de Gennaro ◽  
Paolo Aprea ◽  
Barbara Liguori ◽  
Barbara Galzerano ◽  
Antonio Peluso ◽  
...  
Keyword(s):  
Environmental Remediation ◽  
Arsenic Removal ◽  
Fixed Bed ◽  
Exchange Capacity ◽  
Order Kinetic ◽  
Natural Zeolites ◽  
Dynamic Conditions ◽  
Good Ability ◽  
Adsorption Rates ◽  
Surface Modified

Natural zeolites are used as adsorbents in purification processes due to their cation-exchange ability and molecular sieve properties. Surface modified natural zeolites (SMNZs), produced by attaching cationic organic surfactants to the external surface, can simultaneously act as ionic exchangers and organic molecule adsorbents. In this paper, SMNZs were produced and investigated as adsorbents for As(V) removal from wastewater: two natural zeolites, clinoptilolite and phillipsite, were modified using HDTMA-Br and HDTMA-Cl as surfactants. The obtained samples were then characterized under static and dynamic conditions. Results showed that As(V) removal follows a pseudo-second order kinetic, with fast adsorption rates: every sample reached 100 % removal in 2 h, while equilibrium data showed a Langmuir-like behavior, with a greater anion uptake by the HDTMA-Br modified SMNZs due to the formation of a compact and complete micellar structure. Finally, fixed-bed tests were performed to characterize the samples under dynamic conditions assessing the effect of severe operating parameters on the dynamic exchange capacity, selectivity and efficiency of the process. The obtained results demonstrate a good ability of the tested materials to adsorb As(V) from wastewater, confirming the effectiveness of the proposed surface modification technique in expanding the possibility of using natural zeolites in these processes.

Effects of molecular oxygen on GAC adsorption of energetics

1997 ◽  
Vol 35 (7) ◽  
pp. 197-204 ◽  
Author(s):  
Sarah L. VanderLoop ◽  
Makram T. Suidan ◽  
Sandra R. Berchtold ◽  
Moustafa A. Moteleb ◽  
Stephen W. Maloney
Keyword(s):  
Catalytic Activity ◽  
Activated Carbon ◽  
Adsorption Capacity ◽  
Molecular Oxygen ◽  
Waste Treatment ◽  
Granular Activated Carbon ◽  
Adsorption Properties ◽  
Chemical Degradation ◽  
Degradation Reactions ◽  
Gac Adsorption

Munitions wastewaters are commonly treated by granular activated carbon (GAC) adsorption followed by incineration of the spent carbon. The design of effective GAC unit processes hinges on the knowledge of GAC adsorption capacity for the compounds of interest as well as the types of chemical interactions to expect. GAC can often catalyze polymerization or chemical degradation of the adsorbate in the presence of molecular oxygen. Some adsorbates, though less common, may be subject to catalytic activity even when no molecular oxygen is present. The products of these interactions may enhance or interfere with effective waste treatment. This study individually evaluated the adsorption properties of a variety of energetics compounds. A number of surface catalyzed polymerization and degradation reactions were noted.

Functionalized Magnetic Nanoparticles for Environmental Remediation

2017 ◽  
pp. 705-741
Author(s):  
Ravindra Kumar Gautam ◽  
Shivani Soni ◽  
Mahesh Chandra Chattopadhyaya
Keyword(s):  
Heavy Metals ◽  
Magnetic Nanoparticles ◽  
Environmental Remediation ◽  
Anthropogenic Activities ◽  
Low Cost ◽  
High Surface ◽  
High Surface Area ◽  
Toxic Metal ◽  
Volume Ratio ◽  
Removal Of Heavy Metals

Water pollution by anthropogenic activities is proving to be of critical concern as the heavy metals affect aquatic organisms and can quickly disperse to large distances. This poses a risk to both human health and the aquatic biota. Hence, there is a need to treat the wastewater containing toxic metals before they are discharged into the water bodies. During recent years, magnetic nanoparticles came to the foreground of scientific interest as a potential adsorbent of novel wastewater treatment processes. Magnetic nanoparticles have received much attention due to their unique properties, such as extremely small size, high surface-area-to-volume ratio, surface modifiability, multi functionality, excellent magnetic properties, low-cost synthesis, and great biocompatibility. The multi-functional magnetic nanoparticles have been successfully applied for the reduction of toxic metal ions up to ppb level in waste-treated water. This chapter highlights the potential application of magnetic nanoparticles for the removal of heavy metals.

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