Synthesis and properties of zeolite/N-doped porous carbon for the efficient removal of chemical oxygen demand and ammonia-nitrogen from aqueous solution

Xin, Guangzhi; Wang, Min; Chen, Lin; Zhang, Yuzhou; Wang, Meicheng; Jiang, Wenju; Chen, Yao

doi:10.1039/c8ra08800d

Cited by 10 publications

(4 citation statements)

References 39 publications

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“…The same results were observed by Xin et al , where the removal of ammonia from aqueous solution using a zeolite adsorbent was reported to follow a pseudo-second-order kinetics with 0.9973 coefficient of determination. 49 The pseudo second order suggests that the adsorption rate was governed by chemical adsorption mechanism. 50 Therefore, the ammonium adsorption process was affected by the chemical properties of the zeolite and urine leading to an ion exchange being the rate-determining step and subsequently resulting in longer periods for ammonium uptake.…”

Section: Resultsmentioning

confidence: 99%

Microwave-assisted synthesis of coal fly ash-based zeolites for removal of ammonium from urine

et al. 2020

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Section: Resultsmentioning

confidence: 99%

Microwave-assisted synthesis of coal fly ash-based zeolites for removal of ammonium from urine

et al. 2020

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“…Then it was filtered and dried to get a constant weight. A similar procedure was adopted to determine the loss rate of BT [27].…”

Section: The Loss Rate Of Sbcmentioning

confidence: 99%

Mesoporous Carbonaceous Material From Expanded Polystyrene and Bentonite for Instantaneous Degradation of Mixture of Dyes

Ng¹,

Km²,

Antony³

2021

Preprint

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Carbonaceous material (SBC) was prepared from waste expanded polystyrene (EPS) and bentonite clay (BT) by pyrolysis in a tubular furnace under an inert atmosphere. The calculated average crystallite size of SBC was found to be 31.57nm from XRD analysis. FE-SEM studies showed that charring has changed the smooth-surfaced EPS and globular bentonite into uneven, porous flakes structure. The EDAX mapping results proved the co-existence of Al, Si, Fe, O, Na, Mg, Ca, Ti and C in SBC. BET analysis revealed the mesoporous nature of SBC and indicated its type IV isotherm behaviour. The minute loss rate value in water confirmed the water resistance, solidity and stability of the as-prepared carbonaceous material. Photo degradation in UV light for five different dyes showed immediate degradation at a catalyst dosage of 0.01g for 50ml/10ppm dye solution. The instantaneous discolouration of a mixture of organic dyes in the presence of UV light with micro quantities of SBC has become a cost-effective and simple method of up-cycling waste thermocol.

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“…Once there is a large growth of algae, they would directly absorb ammonia and convert it into useful nutrients for their own use (Olowe & Kumarasamy, 2017). Similarly, zeolite powder can be added to the water to help purify the water by adsorbing and settling the ammonia (Wei et al, 2010; Xin et al, 2019). Most importantly, the level of ammonia should be monitored daily, with prudent measures put in place to regulate ammonia levels.…”

Section: Prevention and Treatment Of Ammonia Stressmentioning

confidence: 99%

Effects of ammonia on shrimp physiology and immunity: a review

Zhao

Yao

et al. 2020

Reviews in Aquaculture

102

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The rapid expansion in shrimp farming comes with problems such as inadequate culture technology, disease outbreak, water pollution and other environmental degradation‐related problems. Prominent among these is the level of ammonia, which has been rising steadily in the last couple of years, mainly due to farming practices and other anthropogenic activities, and therefore has had consequent effects on marine life, especially shrimp. While optimal ammonia levels are a good source of nitrogen for marine phytoplankton that increases the level of dissolved oxygen in water as well serves as food for shrimp, high levels of ammonia are harmful to shrimp. When shrimp pond ammonia levels go beyond the tolerance limits, it inhibits chitinase expression, moulting, growth, phenoloxidase and haemolymph antimicrobial activity, thereby attenuating shrimp innate immune response. In this review, we bring together recent information on the effects of ammonia stress on the growth, physiology, biochemistry, ammonia‐metabolizing enzymes and immunity of shrimp. We also propose areas of research that can be explored in the breeding of new ammonia‐tolerant and disease‐resistant shrimp with robust immune and/or physiological systems that could withstand environmental stress and pathogens.

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Synthesis and properties of zeolite/N-doped porous carbon for the efficient removal of chemical oxygen demand and ammonia-nitrogen from aqueous solution

Abstract: A novel adsorbent zeolite/N-doped porous activated carbon (ZAC) was prepared by the synthesis of zeolite and mesoporous carbon to remove ammonia nitrogen (NH4+–N) and chemical oxygen demand (COD) from aqueous solution.

Cited by 10 publications

References 39 publications

Microwave-assisted synthesis of coal fly ash-based zeolites for removal of ammonium from urine

Microwave-assisted synthesis of coal fly ash-based zeolites for removal of ammonium from urine

Mesoporous Carbonaceous Material From Expanded Polystyrene and Bentonite for Instantaneous Degradation of Mixture of Dyes

Effects of ammonia on shrimp physiology and immunity: a review

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