Olive Mill Wastewater Treatment Using Simple Raw and Purified Jordanian Bentonite Based Low-Cost Method

Al-Essa, Khansaa

doi:10.14233/ajchem.2018.21031

Cited by 1 publication

(3 citation statements)

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“…e purification steps were followed in detail as mentioned in the previous study [1]. e raw bentonite sample was dispersed in distilled water at 22°C, and the clay fraction was recovered by centrifugation at 700 rpm for 4.0 min.…”

Section: Purification Of Raw Bentonitementioning

confidence: 99%

“…Primarily, this is due to bentonite's high surface area and chemical stability. Bentonite, after some modifications, displayed greater stability in comparison to other minerals studied in relation to the adsorption/ desorption process [1]. Enhancing the adsorption capacity of bentonite achieved by different activation methods which include acid activation [2,3], organic activation [4,5], nanobentonite composite [6,7], polymer, and surfactant bentonite composite [8,9], along with the combinations of bentonite-zeolite with bentonite-alum and bentonite-limestone [10] was examined.…”

Section: Introductionmentioning

confidence: 99%

“…Some methods have been implemented to treat OMW with varying degrees of success [36], eventhough a major drawback concerning some techniques is their high capital cost and low toxicity reduction. To manage the OMW sustainably, continuous research on the application of Jordanian bentonite has been conducted [1,2]. Further activation methods will be introduced as an alternative low cost and environmentally safe adsorbent.…”

Section: Introductionmentioning

confidence: 99%

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Effective Approach of Activated Jordanian Bentonite by Sodium Ions for Total Phenolic Compounds Removal from Olive Mill Wastewater

Al-Essa

2021

Journal of Chemistry

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Olive mill wastewater (OMW) is nowadays considered a serious environmental problem, especially within the Mediterranean region. With this in mind, water shortages are also a very serious and prevalent concern in third world countries. The aim of this study is to investigate the feasibility of using Jordanian bentonite, a simple and natural clay, as a possible adsorbent to decrease the negative characteristics of raw OMW, as an approach to the development of a methodology that addresses the OMW problem without affecting freshwater resources. The purified bentonite was activated by sodium ions at room temperature. FTIR, XRD, TGA, and BET surface area measurements were performed. OMW was contacted with both purified and activated bentonite in the batch technique to figure out the optimum parameters for the adsorption process. Physiochemical parameters of OMW were measured before and after treatment. The maximum adsorption qm was found as 8.81 mg/g at 323 K for the total phenolic compounds. The Langmuir and Freundlich models were utilized to describe the equilibrium isotherms and both models fit well. The parameters of thermodynamic show that the adsorption process was feasible, spontaneous, and endothermic in nature. These promising results along with the sodium activation of bentonite significantly improve bentonite’s adsorption capacity.

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Section: Purification Of Raw Bentonitementioning

confidence: 99%