A Gateway to Metal Resistance: Bacterial Response to Heavy Metal Toxicity in the Biological Environment
Published on: 3rd September, 2018
OCLC Number/Unique Identifier: 7893781761
Heavy metals and metalloids are dangerous because they have the tendency to bioaccumulate in biological organisms over a period of time. However, it is conceived that a number of phytochemical agents as well microorganism can act as heavy metal removing agent both from human beings and the environment surrounding. For instance, microbes are used for the removal of heavy metals from the water bodies including bacteria, fungi, algae and yeast. This review shows that bacteria can play an important role in understanding the uptake and potential removal behaviour of heavy metal ions. The bacteria are chosen based on their resistance to heavy metals (incl. their toxicities) and capacity of adsorbing them. Due to specific resistance transfer factors, cell impermeability is drastically inhibited by several ion (i.e. mercury, cadmium, cobalt, copper, arsenic) forms. Between these elements, free-ion cadmium and copper concentrations in the biological medium provide more accurate determination of metal concentrations that affect the bacteria, than with most of the other existing media. Metal toxicity is usually assessed by using appropriate metal ion chelators and adjusting pH factor. Bacteria and metals in the ecosystem can form synergistic or antagonistic relationships, supplying each other with nutrients or energy sources, or producing toxins to reduce growth and competition for limiting nutritional elements. Thus, this relation may present a more sustainable approach for the restoration of contaminated sources.
Studies of Grafts in vegetables, an alternative for agricultural production under stress conditions: Physiological responses
Published on: 3rd January, 2018
OCLC Number/Unique Identifier: 7347068189
Vegetable production by grafting is a technique which it has made possible to resume agricultural soils which previously could not be produced due to stress generated by various abiotic factors, like a lack of water, stress by high or low temperatures, and or heavy metal contamination, among them. It has been documented and defined a number of graftings which they are tolerant to different factors; however, when it comes to auscultating information related to understand the molecular responses and observe what are the biochemical changes and physiological responses of grafted plants, it is dispersed. The current paper attempts to provide basic information documented on technique, addressing the molecular, biochemical and physiological responses, and thus get a clear perspective on the use of grafts, making this practice be used with most frequently by all its advantages.
Effect of cement solidification on strength and leaching properties of Heavy Metals Contaminated Soil
Published on: 13th August, 2018
OCLC Number/Unique Identifier: 7844539292
This study investigated the effect of Portland cement on stabilization of heavy metal contaminated clayey soils that may give range of geo environemntal benefits. The absolute concentration of heavy metals: Lead (Pb), Zinc (Zn), Chromium (Cr), Cadmium (Cd) and Copper (Cu) were measured using an inductively coupled plasma atomic emission spectroscopy (ICP-AES). A series of laboratory scale experiments such as unconfined compression test (UCT), pH test and synthetic precipitation leaching procedure (SPLP) were performed to study the effects of curing time and cement content on the unconfined compressive strength (UCS) and leaching characteristics of heavy metals. According to results, excessive concentration of heavy metals are present in the topsoil of Shanghai Jiao Tong University (SJTU) among which Pb, Zn and Cd were most prominent. Other test results showed that the dry density of both C4 and C8 soil samples increases with curing time. Similarly the compressive strength (qu)of C4 and C8 samples at 21 d of curing increases by 40% (113 kPa-288 kPa) and 15% (745kPa-864 kPa) respectively, as compared to the 7 d of curing. Besides, the test results showed a prominent decrease in the leached concentration of heavy metals with increasing curing time.
Simulating the dispersion of poisonous organic chemical compounds in wastewater treatment process through the active sludge method using the TOXChem model
Published on: 24th June, 2021
OCLC Number/Unique Identifier: 9124851637
Naturally, microorganisms decompose the organic material existing in nature, both in the presence or absence of oxygen. The majority of materials such as poisonous chemical compounds, heavy metals, would prevent the treatment process from taking place, lead to the entry of these contaminants into the environment results in the emergence of numerous diseases. In the present study, using the TOXChem4.1 simulation model, attempts were made to simulate a wastewater treatment plant and then assess the dispersions of contaminants including 1,2-Dimethylnaphthalene, 1,3-Dinitropyrene, 1,6-Dimethylnaphthalene, 1,6-Dinitropyrene, and 17a-ethinylestradiol (EE2) in concentrations of a common scenario. The results of computer simulations showed that the EE2 contaminant is of the highest percentage of decomposition among others, due to its wider chemical structure. Consequently, it is clear that such contaminant is of the highest mass in the sludge exiting the treatment plant. In addition, the results of the simulations demonstrated that the highest volumes of gaseous pollutants take place in the modulation and initial sedimentation units.
Search by University/Institution
Enter your University/Institution to find colleagues at HSPI.
Ensuring author's satisfaction with
- Friendly and hassle-free publication process
- Less production time of articles
- Constructive peer-review
- Enhancing journal reputation
- Regular feedback system
- Quick response to authors' queries
Most Viewed Keywords
- DNA
- SARS-CoV-2
- Hyperthermia
- Ascorbate
- Alzheimer’s disease
- Potentilla fulgens
- Juvenile idiopathic arthritis
- Chronic prostatitis
- Children with cancer
- Cataract
- Contrast nephropathy
- Anthropometry
- Cadmium
- Emotions
- Preterm premature rupture of membranes
- Nutrition
- Chronic lymphoid leukemia
- Benign prostatic hyperplasia
- Groundnut
- Femoral Head, Iliac Crest, Bone Marrow Stem Cells, Proliferation, Osteoblastic Differentiation
Search Articles by Country
Get all latest articles in all Heighten Science Publications Inc journals by country.
Testmonials
Really good service with prompt response. Looking forward to having long lasting relationship with your journal
Avishek Bagchi
I do appreciate for your service including submission, analysis, review, editorial and publishing process. I believe these esteemed journal enlighten the science with its high-quality personel.
Bora Uysal
I wanna to thank clinical journal of nursing care and practice for its effort to review and publish my manuscript. This is reputable journal. Thank you!
Wollo University, Ethiopia
Atsedemariam Andualem
Great, thank you! It was very efficient working w/ your group. Very thorough reviews (i.e., plagiarism, peer, etc.). Would certainly recommend that future authors consider working w/ your group.
David W Brett
My candid opinion is that the service you render is second to none. My favourite part is the prompt response to issue, really i value that.
Abiodun Akanbi Adeogun
I wanna to thank Clinical Journal of Nursing Care and Practice for its effort to review and publish my manuscript. This is reputable journal. Thank you!
Atsedemariam Andualem
“It was a delightful experience publishing my manuscript with the Clinical Journal of Obstetrics and Gynecology. They offered me lots of opportunities I never had from most publishing houses and their prompt services are greatly appreciated.”
Department of Agricultural Economics, Agribusiness and Extension, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
Akowuah Jones Asafo
We really appreciate and thanks the full waiver you provide for our article. We happy to publish our paper in your journal. Thank you very much for your good support and services.
Ali Abusafia
Thank you very much for accepting our manuscript in your journal “International Journal of Clinical Virology”. We are very thankful to the esteemed team for timely response and quick review process. The editorial team of International Journal of Clinical Virology is too cooperative and well-mannered during the publication process. We are hopeful to publish many quality papers in your journal and I suggest the International Journal of Clinical Virology to all of my colleagues, researchers and friends to publish their research here.
Abdul Baset
Your journal co-operation is very appreciable and motivational. I am really thankful to your journal and team members for the motivation and collaboration to publish my work.
Assistant Professor, UCLAS Uttaranchal University, Dehradun, India
Archna Dhasmana
Video Articles
