Article
Environmental Sciences
Sara Khan, Amin Ullah, Tehreem Ayaz, Aamir Aziz, Komal Aman, Mudassir Habib, Semih Yilmaz, Arshad Farid, Humaira Yasmin, Qurban Ali
Summary: This study investigated the use of algae species Cladophora glomerata (CG) and Vaucheria debaryana (VD) as cost-effective and environmentally friendly phycoremediators for composite industrial effluent. The results showed a significant decrease in various pollutants and heavy metal concentrations after the experimentation. Phytotoxicity assay revealed that the treated water samples led to better wheat plant germination, plant height, and root height. The study concluded that phycoremediation using CG and VD is an environment-friendly and economically viable approach for industrial effluent remediation.
ENVIRONMENTAL MONITORING AND ASSESSMENT
(2023)
Article
Environmental Sciences
Akhilesh Modi, Sunita Singh, Jyoti Patki, Naveen Padmadas
Summary: The removal of synthetic textile dyes is a challenge for the textile industry and the environment. This study isolated potent bacteria for dye decolorization from rhizospheric soil of mangrove plants and investigated their abilities through various techniques.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Review
Environmental Sciences
Durgadevi Selvaraj, Navamani Kartic Dhayabaran, Arivazhagan Mahizhnan
Summary: Algae-based treatment of textile wastewater is an eco-friendly and cost-effective method that efficiently removes pollutants and produces bioenergy and high-value products.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Environmental Sciences
Muhammad Rashid Waqas, Sajid Mahmood Nadeem, Muhammad Yahya Khan, Zeeshan Ahmad, Liaqat Ali, Hafiz Naeem Asghar, Azeem Khalid
Summary: This study utilized algae to remediate textile effluent, making it suitable for irrigation and biofuel production. The results showed that the algal strains were able to completely decolorize the effluent and enhance wheat plant biomass. The biodiesel production from the remediated algal biomass was lower compared to normal growth conditions.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Environmental Sciences
J. Priyanka, S. Rajalakshmi, Ponnusamy Senthil Kumar, Veena Gayathri Krishnaswamy, Dunia A. Al Farraj, Mohamed S. Elshikh, Mohamed Ragab Abdel Gawwad
Summary: Azo dyes, known for their toxicity and mutagenicity, are effectively degraded through bioremediation using individual bacteria or immobilized cells. Different bacterial strains and culturing methods have varying effects on the degradation of azo dyes.
ENVIRONMENTAL RESEARCH
(2022)
Article
Environmental Sciences
Luyanda L. Ndlela, Peter Schroeder, Bettina Genthe, Catarina Cruzeiro
Summary: The intensive use of antibiotics has led to the release of large amounts of antibiotic residues into aquatic systems due to inefficient wastewater treatment. Conventional treatments cannot effectively remove emerging contaminants like antibiotics. Algae treatment shows promise as a cost-effective and eco-friendly solution. This study demonstrates the potential of using well-established algal consortia for the removal of antibiotics in wastewater in a developing country context.
Review
Biology
Sadia Zafar, Dilara A. Bukhari, Abdul Rehman
Summary: Dyes, synthetic aromatic compounds with various functional groups, are discharged in effluents and pose a significant threat to aquatic life. The dye industry initially relied on natural sources but shifted to artificial manufacturing. Dyes disrupt the natural equilibrium by reducing photosynthetic activity. In China alone, around 900,000 tons of dyes are produced each year for various industries. Untreated dye wastewater leads to eutrophication, water color change, and oxygen depletion, severely impacting aquatic organisms. Extensive research has been conducted on dye decolorization and biodegradation under aerobic and anaerobic conditions. This review discusses the chemistry, toxicity, and microbial degradation/decolorization of dyes, as well as recent studies and techniques for remediation. Overall, the high biodegradation potential of microbes makes them a promising foundation for green chemistry in eliminating toxic dyes from industrial wastewater.
SAUDI JOURNAL OF BIOLOGICAL SCIENCES
(2022)
Article
Environmental Sciences
Sonika Kumari, Vinod Kumar, Richa Kothari, Pankaj Kumar
Summary: This study found that isolated C. vulgaris from the freshwater habitat of the Ganga River can effectively treat dairy wastewater and produce a significant amount of algal biomass. By using response surface methodology for experimental design and data analysis, the optimal treatment conditions were determined, including wastewater concentration, temperature, and light intensity.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Microbiology
Anjali Joshi, Ankit Hinsu, Ramesh Kothari
Summary: The present study identified an aerobic bacterial consortium AUJ consisting of six different bacterial strains with the ability to efficiently decolorize various azo dyes, making it a potential solution for bioremediation of textile wastewater.
ARCHIVES OF MICROBIOLOGY
(2022)
Article
Environmental Sciences
Shellina Khan, Uma Bhardwaj, Hafiz M. N. Iqbal, Navneet Joshi
Summary: Current environmental research focuses on the sustainable use of mixed bacterial consortium for biodegradation of toxic compounds, specifically hazardous synthetic dyes. Various methods, including microbial treatments, are being explored for wastewater treatment to protect natural water bodies from pollution caused by textile effluents. Microbial consortia show efficient results in degrading toxic dyes and promoting plant growth, providing a non-toxic solution for environmental protection.
Article
Environmental Sciences
Daniel Ocinski, Joanna Augustynowicz, Konrad Wolowski, Piotr Mazur, Ewa Sitek, Jerzy Raczyk
Summary: The study identified three species of algae likely responsible for effective bioremediation of highly Cr(VI)-polluted habitats, showing characteristics of high chromium accumulation and detoxification mechanisms involving reduction and biosorption. With some modifications, the studied reservoir could potentially serve as a cost-effective bioreactor for reducing chromium concentration to desired levels.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Review
Environmental Sciences
Manikka Kubendran Aravind, Nagamalai Sakthi Vignesh, Santhalingam Gayathri, Nair Anjitha, Kottilinkal Manniath Athira, Sathaiah Gunaseelan, Malaisamy Arunkumar, Ashokkumar Sanjaykumar, Sankar Karthikumar, Innasi Muthu Ganesh Moorthy, Balasubramaniem Ashokkumar, Arivalagan Pugazhendhi, Perumal Varalakshmi
Summary: Phycoremediation of heavy metals has gained significant attention as an emerging practice for metal removal in diverse environmental matrices. However, the complex and haphazard physicochemical state of metal polluted sites due to irregular waste discharge poses challenges for the application of microalgae in metal bioremediation. This review focuses on evaluating existing microalgal strategies for metal removal through various processes and provides insights for choosing efficient metal remediation tactics based on the polluted environment. Additionally, the adsorption mechanism of microalgae for metal removal is investigated using principal component analysis with different metals and factors. The review comprehensively discusses suitable strategies for different heavy metal removal and addresses complications and solutions in microalgal metal removal mechanisms.
Article
Environmental Sciences
Nohora Gutierrez-Hoyos, Camila Sanchez, Jaime E. Gutierrez
Summary: Phytoplankton composition and abundance are sensitive indicators of water quality changes. Microalgal Predominant Microbial Consortium (MPMC) was selected and scaled based on live samples collected from two locations. The phytoplankton community monitoring was conducted for over two years. The density of phytoplankton in the sampled areas showed associations with several environmental parameters. The high trophic levels and presence of microalgae and cyanobacteria indicated anthropogenic impact. The phytoremediation treatment effectively reduced organic contamination and positively impacted the water sources.
ENVIRONMENTAL MONITORING AND ASSESSMENT
(2023)
Article
Environmental Sciences
Stephen Dayana Priyadharshini, Palanisamy Suresh Babu, Sivasubramanian Manikandan, Ramasamy Subbaiya, Muthusamy Govarthanan, Natchimuthu Karmegam
Summary: The use of algae for wastewater treatment is gaining interest due to its potential for nutrient and pollutant removal. This sustainable approach can lead to cost reductions and generate renewable bioenergy options.
ENVIRONMENTAL POLLUTION
(2021)
Article
Engineering, Environmental
Mayur B. Kurade, Ghulam Mustafa, Muhammad Tariq Zahid, Mukesh Kumar Awasthi, Mital Chakankar, Katrin Pollmann, Moonis Ali Khan, Young Kwon Park, Soon Woong Chang, Woojin Chung, Byong-Hun Jeon
Summary: This study demonstrates a novel approach of integrated phycoremediation and ultrasonication-irradiation treatment (iPUT) used for improving the degradation of sulfonamide antibiotics via a cumulative effect of combined treatments. Ultrasonication treatment had different effects on microalgae growth depending on whether it was a single treatment (SUT) or multiple-intermittent treatments (IUT). The removal of sulfonamide antibiotics was significantly improved by both SUT and IUT, with IUT showing a higher removal rate.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Biochemistry & Molecular Biology
Mostafa M. El-Sheekh, Mohammed Y. Bedaiwy, Aya A. El-Nagar, Eman W. Elgammal
Summary: Bioconversion of lignocellulosic wastes to valuable end-products via multi-enzymatic hydrolysis is a potential low costing process. In this study, the highest cellulase-producing fungus, Aspergillus niger, was identified and suitable pre-treatment conditions and fermentation parameters were determined. The fungal treatment resulted in complete destruction of the lignocellulosic matrix.
BIOCATALYSIS AND BIOTRANSFORMATION
(2023)
Article
Environmental Sciences
Mostafa M. El-Sheekh, Shimaa M. El Shafay, Abd El-Raheem R. El-Shanshoury, Ragaa Hamouda, Dalia Y. Gharieb, Ghada W. Abou-El-Souod
Summary: Cell immobilization is a modern technique used in biological engineering to immobilize free cells in a small space. This study investigated the disintegration and elimination of azo dyes using Chlorococcum sp., as well as Chlorococcum sp. mixed with Scenedesmus obliquus. The results showed that both combinations had effective decolorization activity under specific pH and temperature conditions.
INTERNATIONAL JOURNAL OF PHYTOREMEDIATION
(2023)
Article
Environmental Sciences
Mofida E. M. Makhlof, Mostafa M. M. El-Sheekh, Abeer I. M. EL-Sayed
Summary: The methanolic extract of Padina pavonica L. exhibited effective antibiofilm, antibacterial, antioxidant, and anticancer activities. It showed high inhibitory action against biofilm formation, strong antibacterial activity against identified bacteria species, concentration-dependent DPPH radical scavenging activity, and significant antiproliferative activity against lung carcinoma. The metabolites evaluated for biological actions included phenols, terpenes, amino acids, alkaloids, flavones, alcohols, and fatty acids.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL HEALTH RESEARCH
(2023)
Article
Environmental Sciences
Mostafa M. El-Sheekh, Mohamed A. Deyab, Nagwa Hassan, Seham E. Abu Ahmed
Summary: This study reported the synthesis of silver nanoparticles using the aqueous extract of marine brown algae Sargassum latifolium, and demonstrated their application in the bioadsorption of Fe (II) from aqueous solutions. The results showed that the silver nanoparticles from S. latifolium extract exhibited efficient removal of Fe (II) ions.
INTERNATIONAL JOURNAL OF PHYTOREMEDIATION
(2023)
Article
Biotechnology & Applied Microbiology
Mona M. Ismail, Gehan M. El Zokm, Amany M. El Sikaily, Adel I. Selim, Gehan A. Ismail
Summary: Phlorotannins, a type of secondary polyphenolic metabolites found in brown seaweeds, have been shown to have potential applications in food and medicine. In this study, five different brown seaweed species were investigated and found to contain considerable amounts of phlorotannins. These phlorotannins exhibited significant antioxidant, antidiabetic, and anti-inflammatory activities.
JOURNAL OF APPLIED PHYCOLOGY
(2023)
Article
Biotechnology & Applied Microbiology
Mostafa El-Sheekh, Mostafa Elshobary, Eman Abdullah, Refat Abdel-Basset, Metwally Metwally
Summary: This study investigates the use of microalgae as a carbon source for anaerobic bacteria to generate biohydrogen. The results show that biological pretreatment + Mg-Zn Fe2O4-NPs and coculture can significantly enhance biohydrogen production and efficiency.
MICROBIAL CELL FACTORIES
(2023)
Article
Environmental Sciences
Hanaa H. Morsi, Sabha M. El-Sabbagh, Ahlam A. Mehesen, Ahmed D. Mohamed, Maha Al-Harbi, Amr Elkelish, Mostafa M. El-Sheekh, Abdullah A. Saber
Summary: Finding alternative antibacterial drugs is crucial due to bacterial resistance. Algae, such as Rhizoclonium hieroglyphicum, have bioactive constituents with antibacterial implications. In this study, extracts of R. hieroglyphicum were tested against pathogenic bacteria, showing potent antibacterial activity. The ethanolic extract exhibited the strongest effect, mainly due to the presence of fatty acids. R. hieroglyphicum could be a promising source for the development of antibacterial agents.
Article
Environmental Sciences
Hanaa H. Morsi, Mostafa M. El-Sheekh, Hamed Eladel, Majdah M. Al-Tuwaijri, Sabha M. El-Sabbagh, Ayah Maher, Abdullah A. Saber
Summary: In recent years, the global energy crisis and freshwater shortage caused by climate change have raised concerns about global water security and energy. This study suggests that using municipal wastewater as a growth medium for cultivating the pollution-tolerant microalgae Chlorococcum sp. can effectively remove nutrients and produce biodiesel.
Article
Plant Sciences
Mona M. M. Ismail, Gehan A. A. Ismail, Mostafa E. E. Elshobary
Summary: Climatic changes may harm calcifying marine species, particularly calcareous red algae, which are biologically important but lack research on their morpho-anatomical and chemical characterization. This study investigated the seasonal variations in three dominant Mediterranean calcified red algae and identified them as Corallina officinalis, Jania rubens, and Amphiroa rigida through morphological and genetic analyses. C. officinalis was present in all seasons, with the highest abundance in autumn, while J. rubens occurred in winter, autumn, and spring but was absent in summer. A. rigida was abundant only in summer. The study also examined the morphological and anatomical characteristics of these species and assessed their chemical compositions in different seasons, with carbohydrates dominating followed by proteins and lipids. Pearson correlation analysis revealed a positive relationship between salinity level, nitrogenous nutrients, and pigment contents (phycobiliproteins, carotenoids, and chlorophyll a) in the seaweeds. Furthermore, the results showed that calcified red algae could deposit various forms of calcium carbonates depending on the species, including calcite, vaterite, calcium oxalate, calcite-III I calcium carbonate, and aragonite.
Article
Multidisciplinary Sciences
Wagdy Labib, Alaa A. El-Dahhar, Shimaa A. Shahin, Mona M. Ismail, Shimaa Hosny, Mohamed H. Diab
Summary: Based on a one-year study in the Eastern Harbor of Alexandria, Egypt, this research aims to assess water quality monitoring data. The study reveals that the harbor is mainly characterized by mesotrophic and poor-bad water conditions, with oligotrophic conditions dominating in winter and eutrophic status and poor conditions dominating in autumn. Finding suitable tools to evaluate the water status in such a dynamic marine basin is challenging, and establishing a common quality status using a single approach is difficult. Despite some agreement between approaches, significant discrepancies were observed in classification results on a temporal scale and for certain indices' inability to sort all types of water bodies in the harbor.
SN APPLIED SCIENCES
(2023)
Article
Engineering, Environmental
Mostafa M. El-Sheekh, Mohamed A. Deyab, Nagwa I. Hassan, Seham E. Abu Ahmed
Summary: Sodium alginate silver nanoparticles were found to be more effective than sodium alginate in removing Fe (II) ions from water, with a removal efficiency of 80%. The optimal conditions for bioadsorption of Fe (II) were pH 4, contact time of 150 seconds, and an adsorbent dose of 0.01 g. The adsorption isotherm followed the Langmuir model.
BIOREMEDIATION JOURNAL
(2023)
Article
Chemistry, Medicinal
May Almukainzi, Thanaa A. El-Masry, Hend Selim, Asmaa Saleh, Mostafa El-Sheekh, Mofida E. M. Makhlof, Maisra M. El-Bouseary
Summary: In this study, the anti-inflammatory effects of Ulva intestinalis extract and selenium nanoparticles loaded with U. intestinalis (UISeNPs) were investigated. Both U. intestinalis extract and UISeNPs were found to boost the expression of the cytoprotective/antioxidant pathway Keap1/Nrf2/HO-1, with UISeNPs showing superior efficacy.
Article
Biochemistry & Molecular Biology
Mostafa M. El-Sheekh, Fatma Ward, Mohamed A. Deyab, Majid Al-Zahrani, Hussein E. Touliabah
Summary: This study isolated and characterized fucoidan from Dictyota dichotoma var. dichotoma and evaluated its antioxidant and antitumor potential. The fucoidan exhibited strong antioxidant activity and decreased the viability of cancer cells.
Article
Green & Sustainable Science & Technology
Mostafa M. El-Sheekh, Aya A. El-Nagar, Medhat ElKelawy, Hagar Alm-Eldin Bastawissi
Summary: Bioethanol has been widely used as the most extensively used biofuel due to its significant contribution in reducing pollution and crude oil use. The optimization process for bioethanol production and utilization has been conducted using Response Surface Methodology (RSM) to study the parameters and their combined impact on bioethanol% and residual sugar. A quadratic regression model was developed to predict bioethanol% and residual sugar, obtaining R2 values of 0.9984 and 0.9883, respectively. The optimized engine operating parameters using the central composite design approach (CCD) showed the highest break thermal efficiency (BTE%) and lowest NOx emissions for a blend of biodiesel and diesel combined with bioethanol.
Article
Environmental Sciences
Faiza M. A. Akl, Suzan I. Ahmed, Mostafa M. El-Sheekh, Mofida E. M. Makhlof
Summary: This study evaluated the potential usage of three dried seaweeds as inexpensive adsorbents for the removal of organic compounds and heavy metals from wastewater. The results showed that S. latifolium had the highest potential as a bioadsorbent, with good removal efficiency. The study also found that algal cells have a negatively charged surface, making them suitable for adsorbing pollutants in wastewater.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
