Experimental design optimization of reverse osmosis purification of pretreatedolive mill wastewater

Ochando-Pulido, J.M.; Martinez-Ferez, A.

doi:10.1016/j.scitotenv.2017.02.045

Cited by 11 publications

(6 citation statements)

References 37 publications

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“…Bu maddeler çevre üzerinde olumsuz etkilere neden olabilir. Bu etkiler kötü kokular, su yaşamına yönelik tehditler, toprak doygunluğu, toprak kalitesindeki değişiklikler, doğal sularda renk değişimi, yüzey sularının ötrofikasyonu, yüzeysel ve yeraltı sularında kirlilik ve toksisite olarak sıralanabilir [3].…”

Section: Introductionunclassified

Application of Box-Behnken Statistical Design Method in Chitosan Coagulation of Olive Mill Wastewater

Akdemir

2022

Bilecik Şeyh Edebali Üniversitesi Fen Bilimleri Dergisi

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Zeytinyağı üretimi birçok Akdeniz ülkesi için en önemli tarımsal faaliyetlerden biridir ve ekonomik olarak önemlidir. Zeytinyağı endüstrisi atıksuyu (karasu), zeytinyağı üretim aşamalarında meydana gelen sayısız işlemden kaynaklanan önemli bir sıvı atıktır. Karasuyun bertarafı, özellikle yüksek organik madde, askıda katı madde, fenolik bileşik içeriği ve asidik pH değeri ile Akdeniz Bölgesinde ciddi bir çevresel sorundur. Bu çalışmada karasuyun kitosan koagülasyonu ile kimyasal olarak ön arıtımı araştırılmıştır. Kitosan ile koagülasyonun Kimyasal Oksijen İhtiyacı (KOI) ve Toplam Katı Madde (TKM) giderme verimleri üzerindeki etkisi Box-Behnken istatistiksel deney tasarımı ile belirlenmiştir. Bu yöntem, üç bağımsız değişkenin (kitosan konsantrasyonu, yavaş karıştırma ve çökeltme süresi) tepki fonksiyonları (KOI ve TKM verimliliği) üzerindeki etkilerini araştırmak ve KOI giderme verimini en üst düzeye çıkaran optimum koşulları belirlemek için kullanılmıştır. Çalışma kapsamında Design Expert programı kullanılmış, gözlemlenen ve tahmin edilen KOİ ve TKM giderme verimleri arasındaki korelasyon katsayıları (R2) sırasıyla 0.979 ve 0.9585 olarak bulunmuştur. Yapılan deneysel çalışmalar sonucunda en yüksek KOİ giderme veriminin (%53) elde edildiği koşullar; 600 mg/L kitosan konsantrasyonu, 45 dakika yavaş karıştırma süresi ve 60 dakika çökeltim süresi olarak bulunmuştur. TKM giderimi için en yüksek giderme verimi (%73) ise, 600 mg/L kitosan konsantrasyonu, 45 dakika yavaş karıştırma süresi ve 120 dakika çökeltim süresinde elde edilmiştir.

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Section: Introductionunclassified

Application of Box-Behnken Statistical Design Method in Chitosan Coagulation of Olive Mill Wastewater

Akdemir

2022

Bilecik Şeyh Edebali Üniversitesi Fen Bilimleri Dergisi

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“…The extraction of olive oil generates vast quantities of wastes that may have a high impact on land and water environments because of their high phytotoxicity. Due to their high load of organic matter, a series of hazards of these effluents related to the contamination of soil, hindrance of plants growth, leaks to the underground aquifers, pollution of water bodies, inhibition of auto purification processes, as well as phytotoxic impacts to aquatic fauna and to ecological equilibria and intense odour nuisance have been reported so far [2][3][4][5] .…”

Section: Introductionmentioning

confidence: 99%

“…However, this operating method has several important disadvantages, such as bad odour, infiltration and insect proliferation 15 . Several physicochemical, biological and combined processes have been examined for the treatment of OMW, resulting in considerable organic load and toxicity abatement, such as biological processes, aerobic and anaerobic [16][17][18] , advanced oxidation processes, owing to the strong oxidation potential of the agents used 8 , chemical precipitation using lime 19 , adsorption using different mineral substrates as adsorbents [20][21][22] , nanofiltration and reverse osmosis membranes 5,23,24 . However, these processes suffer from serious inconveniences such as high cost, low efficiency and sludge disposal problems.…”

Section: Introductionmentioning

confidence: 99%

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Optimization of electrocoagulation operating parameters for COD removal from olive mill wastewater: application of Box-Behnken design

Erraib

Ass²

2019

Mediterr.J.Chem.,

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Box–Behnken response surface design was successfully employed to optimize and study the olive mill wastewater (OMW) treatment by electrocoagulation (EC) process. The influence of four decisive factors were modelled and optimized to increase the removal of chemical oxygen demand (COD). The Box–Behnken design (BBD) results were analyzed and the second-order polynomial model was developed using multiple regression analysis. The model developed from the experimental design was predictive and a good fit with the experimental data with a high coefficient of determination (R2 ) value (more than 0.98). The optimal operating conditions based on Derringer’s desired function methodology are found to be; initial pH of 4.4, a current density of 27.6 mA/cm2 , electrolysis time of 14.1 min, and chloride concentration of 3.2 g/L. Under these conditions, the predicted COD removal efficiency was found to be 67.14% with a desirability value of 0.94. These experimental results were confirmed by validation experiments and proved that Box–Behnken design and response surface methodology could efficiently be applied for modelling of COD removal from OMW.

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“…Numerous purification methods have been applied to treat the wastewater and to sustain water supply, including adsorption [3][4][5][6], photodegradation [7,8], reverse osmosis [9][10][11] and crystallization [12][13][14]. Crystallization is a solid-liquid separation technique, where solutes from a solution are transformed to a pure solid crystalline phase.…”

Section: Introductionmentioning

confidence: 99%

Progressive Freeze Concentration in Removing Methylene Blue from Dye Wastewater

Hamid¹,

Ibrahim²,

Zolfakar³

2019

Int. J. Appl. Sci. Eng.

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The dye industry generates huge amount of wastewater and could severely jeopardize environmental quality. This study aimed to purify methylene blue from dye wastewater via progressive freeze concentration (PFC). PFC was introduced as a new approach to purify methylene blue. In this work, PFC technique studied for its effectiveness in removing methylene blue from wastewater of dye industry. In PFC, pure water is produced in the form of ice crystal block and leave behind a higher concentration solution. The effect of coolant temperature, operation time and stirring speed were investigated and evaluated by the value of effective partition constant (K) and percentage of solute reduction. The lowest K value (0.26) was obtained at -8°C with the highest solute reduction (71.55%). Meanwhile, the highest efficiency for stirring speed was determined at 350 rpm with K value and solute reduction were 0.33 and 62.69%, respectively. K value of 0.053 and solute reduction of 93.25% were obtained at the best time of 20 minutes. The results demonstrated that the moderate coolant temperature, moderate operation time and maximum stirring speed resulted in the lowest K value and highest percentage of solute reduction in ice which indicates the highest efficiency of methylene blue removal.

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Experimental design optimization of reverse osmosis purification of pretreatedolive mill wastewater

Cited by 11 publications

References 37 publications

Application of Box-Behnken Statistical Design Method in Chitosan Coagulation of Olive Mill Wastewater

Application of Box-Behnken Statistical Design Method in Chitosan Coagulation of Olive Mill Wastewater

Optimization of electrocoagulation operating parameters for COD removal from olive mill wastewater: application of Box-Behnken design

Progressive Freeze Concentration in Removing Methylene Blue from Dye Wastewater

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