Papers by Doaa A . El-Emam
International Journal of Engineering Research & Technology (IJERT), 2019
Huge interest has recently arisen toward using various kinds of inexpensive and available alterna... more Huge interest has recently arisen toward using various kinds of inexpensive and available alternative techniques for wastewater treatment and removal of heavy metals. One of them is the usage of ready biomass of several kinds of algae (macroalgae and microalgae).In this study, we concerned about applying the phycoremediation technology as an alternative, eco-friendly technology for wastewater treatment. We examine the potential of Chlorella vulgaris and Scenedesmus quadricauda (microalgae) and the brown macroalga, Dictyota Dichotoma and Turbinaria Ornata in this technology, (pilot-scale laboratory study). We analyzed the physicochemical characteristic of wastewater before and after treatment with algae and determine the removal capacity of algae for contaminated heavy metals. The results obtained showed that the maximum growth rate, growth index and biomass productivity were obtained at 10 6 cell/ml concentration which was recommended to be used in wastewater treatment. Microalgae pollutants removal efficiency was reached 92.7and 87.5 % for BOD and COD respectively and 100% for TN and TP, while of Turbinaria Ornata reached 44.4
Egyptian Journal of Aquatic Biology and Fisheries, 2019
Water pollution is a serious worldwide environmental problem. This problem results from increased... more Water pollution is a serious worldwide environmental problem. This problem results from increased population growth, urbanization, and industrialization, (Wang and Choi, 2019). Where, agricultural, industrial and domestic activities discharged vast quantities of waste in rivers all over the world, (Badr et al., 2013). The River Nile is considered the fundamental source of freshwater in Egypt. Egypt depends on a very confined share of the surface water of the Nile River 55.5 BCM (billion cubic meters)/ year, (MWRI, 2010). The water quality of the River Nile is influenced by the agricultural, industrial, domestic and touristic activity along the banks of the River in
INTERNATIONAL JOURNAL OF ENGINEERING RESEARCH & TECHNOLOGY (IJERT), 2021
This study was conducted to monitor surface water salts along the Damietta Branch-Nile River for ... more This study was conducted to monitor surface water salts along the Damietta Branch-Nile River for a yearlong period to evaluate its quality for irrigation. Damietta Branch was divided into twelve stations along through it where water samples were collected and some physicochemical parameters were analyzed. Results obtained confirmed that the SAR value of water along the branch ranged from 3.93 to 60.28 eq/l. According to SAR calculations and characterizations, it is obtained that Damietta branch water is classified as medium (good water quality), which is suitable for coarse textured or organic soil with good permeability and relatively unsuitable in fine textured soils. Nevertheless, its quality varied between several classes (low, medium, high and very high) at different stations separately along the branch. The PAR value of water along the branch ranged from 1.72 to 25.55 eq/l. Thus, Damietta branch water is classified as having low to medium risk of soil dispersion (low to medium water quality) but real risk values are for waters low in EC, typically < 65mS/m). However, different stations along the branch varied between several classes (low, medium, high and very high). The ESP value of water along the Damietta Branch ranged from 12.96 to 68.68 and with a mean value of 43.04±20.2 along the branch. Chloride, Sodium, Calcium, and potassium concentration values in water along Damietta Branch were distributed in a regular manner as it increased from upstream to downstream along Damietta branch except for one or two stations.:
Scientific Journal for Damietta Faculty of Science , 2023
Coastal and estuarine ecosystems provide a diverse range of products and services, such as water ... more Coastal and estuarine ecosystems provide a diverse range of products and services, such as water quality management, carbon storage, food supply, some natural disaster protection, and to name a few. However, these areas are the most vulnerable to climate change. In this study, we look into climate change consequences and the potential regional adaptation methods to them, with an emphasis on coastal risks. We evaluated their efficacy in terms of both the coastal management methods for which they were designed as well as the climate change in the long term. Because the assessment is not reliant on the local environment only, it is applicable to most coastal locations. We undertook a literature analysis to identify measures that may be applied to the coastal area of Damietta. The EMA (Egyptian Meteorological Authority), the Egyptian Environmental Affairs Agency (EEAA), the Climate Change Performance Index (CCPI), and the Intergovernmental Panel on Climate Change's (IPCC) classification of adaptation measures based on institutional characteristics, socioeconomic characteristics, or physical-environmental characteristics are used to categorize these metrics in these two integrated methodologies. Parallel to this, a number of standards were developed to evaluate the measure's present and potential efficacy, regardless of the context. At last, this strategy enabled objective and straightforward comparisons between measurements by assessing the adaptation strategies according to these standards and predictions of the challenges we will face in the future. The study proposed several extension strategies to raise awareness about the expected consequences of climate change.
Egyptian Journal of Aquatic Biology & Fisheries, 2021
This study was conducted to evaluate heavy metals pollution in sediments of the Nile River- Damie... more This study was conducted to evaluate heavy metals pollution in sediments of the Nile River- Damietta Branch using mathematical models of heavy metal indices (enrichment factor (EF), contamination factor (CF), pollution load index (PLI), degree of contamination (DC) and geo-accumulation index (Igeo)). The results showed that the concentrations of heavy metals in sediment samples, followed the order of Fe> Zn> Pb> Co> Ni> Cu> Mg. The EF for each heavy metal element was calculated relative to the background values after normalization with the Fe element. According to the mean values of EFs, the descending order of heavy metals enrichment in the sediments was: Cd >Fe> Pb > Co > Zn > Ni > Cu (greater to lower). Cd was considered to poses significant to very high enrichment along with the different stations along the study area. In addition, it recorded very high contamination (7.41±0.71) and Igeo mean value (6.50 ± 1.32) along the study area. PLI values varied between 0.813 and 2.331 along the study area with a mean value of 1.338 ± 0.477. This result showed a considerable degree of contamination (mean value =16.442 ± 7.136) along the branch. However, stations 3, 5, 9 and 10 recorded a very high degree of contamination with values (30.901, 33.867, 56.932 and 48.536), respectively. HI values of heavy metal order was: Cd (239.63) > Pb (72.65) > Co (34.732) > Ni (14.457) > Zn (5.952) > Cu (4.719) > Fe (2.896). With respect to human health, Ni, Pb, Cd, Fe, Zn, Cu, and Co were identified as potential contaminants. whereas, Pb, Cd and Cu are classified as non-carcinogenic by the Agency for Toxic Substances and Disease Registry.
Ain Shams Engineering Journal, 2021
This study was conducted to examine cement kiln dust (CKD) efficiency for wastewater treatment. W... more This study was conducted to examine cement kiln dust (CKD) efficiency for wastewater treatment. We analyzed the physicochemical characteristics of wastewater before and after treatment and then we determined its removal potential. The optimum factors of the treatment process were determined using a jar test technique. It was pH (8.1), dosage (1.9 g) and grain size (0.1 mm) with contact time of 30 min at 150 rpm. CKD pollutant removal efficiency reached 85.
Books by Doaa A . El-Emam
Springer Water. Springer, Cham, 2023
For more than 7000 years, olive oil production and consumption have been an established tradition... more For more than 7000 years, olive oil production and consumption have been an established tradition in the Mediterranean area. Due to its great dietary and nutritional value, the olive oil industry is quickly growing across the world. Its manufacturing takes place in two ways: press extraction (the traditional method) and the continuous three-phase decanter process. Olive oil is extracted from the fruit of the olive and mixed with water to create a paste. Water is used in some of these steps to squeeze out most of the oil from the olive. The resulting paste is then mixed to increase the percentage of available oil. Both methods produce approximately (20%) olive oil, (30%) solid waste (olive husk) and 50% olive mill wastewater. This olive mill wastewater has a low pH and contains high toxic organic loads, which makes it a major environmental issue for countries producing olive oil. This chapter discusses the various approaches used for the mitigation of wastewater contaminants produced by the olive oil industry. Recent research studies which focused on the valorization options for dealing with olive mill waste residues such as animal feed, biofuel and biogas are also discussed.
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Papers by Doaa A . El-Emam
Books by Doaa A . El-Emam