Study of the retention phenomena of copper II by calcinated wheat by-products

Gherbi, N.; Méniai, Abdeslam-Hassen; Bencheikh-Lehocine, M.; Mansri, A.; Morcellet, Michel; Bellir, K.; Bacquet, Maryse

doi:10.1016/j.desal.2004.06.091

Cited by 12 publications

(2 citation statements)

References 6 publications

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“…It was found that the effective sorption took place at a pH range of 4.5 to 8.5 which can be attributed to the formation of As-Ca complexes at this pH range [33,34]. …”

Section: Effects Of Initial Concentration Dilution Ratio and Ph On Amentioning

confidence: 98%

Retention Studies on Arsenic From Aqueous Solutions by Lime Treated Semi Arid Soils

Moghal

Reddy²,

Mohammed³

et al. 2017

geomate

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ABSTRACT:In this study, locally available semi-arid soils (Al-Ghat and Al-Qatif) having different chemical and mineralogical characteristics are considered as barrier materials, and their response to arsenic adsorption at varying initial concentrations, pH conditions, temperature and dilution ratios is studied. Empirical models (Langmuir and Freundlich) are applied to ascertain monolayer or heterogeneous adsorption. Lime is added to these soils in order to enhance their geotechnical properties. Kinetic models are employed to validate the type and nature of arsenic sorption onto these soils (whether pseudo first-order or second-order). Also Elovich and intraparticle diffusion models revealed that along with surface adsorption, chemisorptions and diffusion are the other processes occurring concurrently in the system, but it was not able to identify the dominant phenomenon among these models. It was concluded that both Al-Ghat and Al-Qatif soils when amended with lime can attenuate arsenic, and the experimental results correlate well with selected empirical models.

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“…It was found that the effective sorption took place at a pH range of 4.5 to 8.5 which can be attributed to the formation of As-Ca complexes at this pH range [33,34]. …”

Section: Effects Of Initial Concentration Dilution Ratio and Ph On Amentioning

confidence: 98%

Retention Studies on Arsenic From Aqueous Solutions by Lime Treated Semi Arid Soils

Moghal

Reddy²,

Mohammed³

et al. 2017

geomate

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“…2 3 tam faktöriyel tasarımlarda (Montgomery, 2008), Tablo 2'de de görüldüğü gibi en az 8 deney yapılmaktadır. Eğer deneylerde 3 tekrar tercih edilirse tam faktöriyel için 24 farklı deneyin yapılması gerekmektedir.…”

Section: Matematiksel Model Ve Analizunclassified

Deneysel Tasarim İle Sulu Çözelti̇lerden Metal Ayrişimina Etki̇eden Faktörleri̇n Opti̇mi̇zasyonu

Gençosman¹,

Orbak²,

Orbak³

2015

Uludağ University Journal of the Faculty of Engineering

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Deneysel tasarım endüstri ve kimya sanayisini de kapsayan çok çeşitli alanlarda kullanılmaktadır. Bu çalışmada deneysel tasarım ve cevap yüzeyi metodu sulu çözeltilerden kadmiyum iyonlarının ayrıştırılmasını etkileyen faktörlerin incelenmesinde kullanılmıştır. Kadmiyum iyonlarının ayrıştırılmasını etkileyen faktörler pH, başlangıç metal konsantrasyonu ve çözelti sıcaklığı olarak belirlenmiştir. Deneylerde kullanılan aktive edilmiş karbonlar, kimyasal ve fiziksel aktivasyon metotlarıyla Tunçbilek linyitinden elde edilmiştir. Deneysel tasarım ile faktörler analiz edilmiş ve önem seviyeleri belirlenmiştir. Ele alınan faktörlerin etkileri ve birbirleriyle etkileşimleri varyans analizi yöntemiyle ortaya çıkarılmıştır. Regresyon analiziyle birlikte cevap yüzeyi metodundan da yararlanarak deney limitleri içinde en iyi kadmiyum ayrışımını sağlayacak optimum koşullar belirlenmiştir.

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Removal of heavy metals and cyanide from gold mine wastewater

Acheampong

Meulepas

Lens

2010

J of Chemical Tech & Biotech

206

123

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This paper reviews the technology and biotechnology to remove heavy metals (such as copper, arsenic, lead and zinc) and cyanide from contaminated wastewater. The paper places special emphasis on gold mine wastewater and the use of low cost materials as sorbent. Various biological as well as physicochemical treatment processes are discussed and compared on the basis of costs, energy requirement, removal efficiency, limitations and advantages. Sorption using natural plant materials, industrial and agricultural waste has been demonstrated to have the potential to replace conventional methods for the removal of heavy metals because of its cost effectiveness, efficiency and the local availability of these materials as biosorbent. The parameters affecting sorption, such as initial ion concentration, pH, sorbent dosage, particle size and temperature, are discussed. The overall treatment cost of metal and cyanide contaminated wastewater depends on the process employed and the local conditions. In general, technical applicability, cost-effectiveness and plant simplicity are the key factors in selecting the most suitable treatment method.

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Study of the retention phenomena of copper II by calcinated wheat by-products

Cited by 12 publications

References 6 publications

Retention Studies on Arsenic From Aqueous Solutions by Lime Treated Semi Arid Soils

Retention Studies on Arsenic From Aqueous Solutions by Lime Treated Semi Arid Soils

Deneysel Tasarim İle Sulu Çözelti̇lerden Metal Ayrişimina Etki̇eden Faktörleri̇n Opti̇mi̇zasyonu

Removal of heavy metals and cyanide from gold mine wastewater

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