Batch experiments are applied to determine the effectiveness of zeolite addition on the characteristics of wastewater of the oil industry and operational factors. The concentrations of heavy metals were measured using an atomic absorption spectrophotometry. Results have shown that 2.5 g/L of zeolite at a speed of 270 rpm, 6.5 pH would result in about 99% removal efficiency.
The main purpose of this research is to control the water pollution through focusing on monitoring and evaluating of the water pollution. The components such as electronic device contains Arduino, sensors (total dissolved solids (TDS), temperature, and turbidity), liquid crystal display LCD, and electronic arm with servo motor have been employed to control the water quality. The evaluation of the water quality is paramount to the investigation and use of water and aiming to progress the realization of the phenomena which take place in the water environments. It is important to know the variables which affect the water bodies. This evaluation participates to the improvement of water quality and contribute to the fast and effective method for monitoring and displaying the water quality.
A combined process of solvent extraction and two-phase biodegradation was carried out to remove crude oil from water by mixed cultures, where silicone oil was selected as the organic solvent due to its biocompatibility and non-biodegradability. The crude oil removal and cell growth was experimentally studied. A simple model that combined steady mass transfer equations and dynamic growth kinetics of suspended cells was suggested to follow the entire process. Under the conditions studied, complete removal of crude oil from water was achieved at initial crude oil concentration of 5,000 mg/L. Results revealed that the proposed model satisfactorily described the process as long as crude oil level in the cell medium did not exceed the toxicity limit of suspended cells.
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