Utilization of Natural Zeolite as Sorbent Material for Seawater Desalination

Wibowo, Edy; Sutisna,; Rokhmat, Mamat; Murniati, Rırı; Khairurrijal, Khairurrijal; Abdullah, Mıkrajuddın

doi:10.1016/j.proeng.2017.03.002

Cited by 58 publications

(27 citation statements)

References 21 publications

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“…ANZ had the highest adsorption capacity compared with LMWC, HMWC, and NZ. This was due to the decrement of cationic species Na, Ca, and Fe, which was detected by EDX analysis for ANZ, which contributed to the higher unbalanced negative charge within the crystal lattice of ANZ that can be neutralized by NH 4 + hence led to higher adsorption 18, 20, 21 . This is also supported by the findings of Yang et al 18 who reported that the activation using heat treatment caused the adsorption capacity of NZ to improve due to the decrease of exchangeable cations.…”

Section: Resultsmentioning

confidence: 53%

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Ammonium ion removal using activated zeolite and chitosan

Safie

Yaser

Hilal

2020

Asia-Pacific J Chem Eng

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Studies have previously been done on efficacies of chitosan and zeolite in ammonium ion (NH 4 + ) removal. However, no study compares the adsorption performance of natural zeolite (NZ) and activated NZ (ANZ) with high molecular weight chitosan (HMWC) and low molecular weight chitosan (LMWC).Hence, this study investigates the potentials of NZ, ANZ, LMWC, and HMWC in NH 4 + removal. The characteristics of NZ, ANZ, LMWC, and HMWC such as functional groups, surface morphology, elemental composition, zeta potential, and particle size was also investigated. The deposition of NH 4 + on the surface of NZ and ANZ was confirmed with the absence of nitrogen by the adsorption spectrum of energy dispersive X-ray (EDX) and supported by the presence of an Fourier transform infrared (FTIR) stretching band at 3,500-3,300 cm −1 , as well as broader and less intense bands~1,600 cm −1 after the adsorption for all the adsorbents. The particle size of LMWC, HMWC, NZ, and ANZ were 98, 813, 22,354, and 9,826 nm, respectively. Meanwhile, after the activation process, the composition of O, Si, Al, Fe, Ca, and Na was reduced. NH 4 + batch adsorption was also studied. HMWC, NZ, and ANZ reached adsorption equilibrium at 15 h, meanwhile for LMWC, the equilibrium reached at t = 20 h. The adsorption capacity of LMWC, HMWC, NZ, and ANZ at an initial concentration of 50 mg/L was 0.769, 0.331, 2.162, and 2.937 mg/g, respectively.

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Section: Resultsmentioning

confidence: 53%

“…Heat treatment is known to be the best pre‐treatment due to the morphological structure changes, which do not require any chemicals. The pore size decreases, but the content of cations will also greatly reduce, opening up more sites for the attachment of NH 4 + 18, 21 . The temperature used during heat treatment plays an important role.…”

Section: Introductionmentioning

confidence: 99%

Ammonium ion removal using activated zeolite and chitosan

Safie

Yaser

Hilal

2020

Asia-Pacific J Chem Eng

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“…For example, graphene-incorporate ENMs exhibit enhanced membrane superhydrophobicity, porosity, and LEP, for MD applications. 1,8,130,131…”

Section: New Ro and MD Technologiesmentioning

confidence: 99%

Recent developments in polymeric electrospun nanofibrous membranes for seawater desalination

et al. 2018

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“…В настоящее время в большей степени используются следующие способы модификации: термический, химический, термохимический, ме-ханический. Термическое воздействие рассмотрено в работах [8,9]. Более эффективными способами по сравнению с термическим методом являются химическая [10,11] и термохимическая модифика-ции.…”

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“…Currently, the following methods of modification are more widely used: thermal, chemical, thermochemical, mechanical. The thermal effect is stipulated in the works [8,9]. More effective methods in comparison with the thermal method are chemical [10,11] and thermochemical modifications.…”

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confidence: 99%

Plasmomodificated Sorbing Agents on the Basis of Zeolite Containing Earth Materials of the Khotynets Deposit Occurrence

Bruyako¹,

Grigor’eva²,

Grigoreva³

et al. 2017

Stroitel’stvo: nauka i obrazovanie

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А ННОТА Ц И Я. Сорбенты на основе натуральных цеолитов являются дешевым и доступным сырьем. Для увеличе-ния их сорбционной способности производится модификация. Модифицированные цеолиты могут использоваться в качестве функциональных добавок для строительных материалов, которые улучшают качество воздуха в помещении. Цеолитсодержащие породы подвергаются модификации различными способами: термическими, химическими, термо-химическими, механическими. В настоящее время наиболее эффективным направлением является использование ионно-плазменных технологий, в том числе влияние низкотемпературной неравновесной плазмы (НТНП), которое позволяет направить свойства только поверхностного и приповерхностного слоев в наноуровне. Этот эффект уве-личивает сорбционную способность сорбентов на основе цеолитсодержащих пород. В статье представлены результаты исследований по определению влияния НТНП на сорбционные свойства моди-фицированных природных цеолитов. В качестве объекта исследования были выбраны цеолиты Хотынецкого место-рождения Орловской области. Обработка сырья проводилась в лабораторной установке. Источник переменного тока с напряжением до 8000 В и частотой до 40 кГц между электродами создает область НТНП. Метод азотной порозиметрии на устройстве NOVA 2200 был использован для определения влияния НТНП на изме-нение нанопористости природного цеолита. Метод оптической микроскопии был использован для анализа внешних изменений поверхности цеолитов. Метод комбинационного рассеяния (КР) показал наличие явных изменений по-ложения и интенсивности полос в спектрах КР модифицированных образцов. Результаты исследований подтверждают высокое модифицирующее действие НТНП. OOO "AMTEK", 14, Fruktovaya str., Moscow, 117556, Russian Federation A B S T R AC T. The sorbing agents on the basis of natural zeolites are cheap and affordable raw materials. In order to increase their sorption capacity, a modification is made. Modified zeolites can be used as functional additives for building materials that improve indoor air quality. Zeolite containing earth materials undergo the modification in various ways: thermal, chemical, thermochemical, mechanical. Currently, the most effective direction is the use of ion plasma technologies, including the influence of low-temperature nonequilibrium plasma, which allows to direct the properties of only the surface and near-surface layers at the nanoscale level. This effect increases the sorption capacity of sorbing agents on the basis of zeolite containing earth materials. The paper presents the results of studies on determination the effect of a low-temperature nonequilibrium plasma influence on the sorption properties of modified natural zeolites. The object of the study was the zeolites of the Khotynets deposit occurrence of the Oryol region. The processing of raw materials was carried out in a laboratory machine. An alternating current generator with a voltage of up to 8000 V and a frequency of up to 40 kHz between the electrodes creates a region of low-temperature nonequilibrium plasma. PLASMOMODIFICA...

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Utilization of Natural Zeolite as Sorbent Material for Seawater Desalination

Cited by 58 publications

References 21 publications

Ammonium ion removal using activated zeolite and chitosan

Ammonium ion removal using activated zeolite and chitosan

Recent developments in polymeric electrospun nanofibrous membranes for seawater desalination

Plasmomodificated Sorbing Agents on the Basis of Zeolite Containing Earth Materials of the Khotynets Deposit Occurrence

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