Agro-waste-based functionalized and economic adsorbents for the effective treatment of toxic contaminants from tannery effluent

Kabir, MH; Nahar, Nur; Akter, Mst. Mahmoda; Alam, Faisal; Gilroyed, Brandon H.; Misu, Marjia Mufti; Didar-ul-Alam, Md.; Hakim, Mahmuda; Tijing, Leonard D.; Shon, Ho Kyong

doi:10.1016/j.jwpe.2023.103578

Cited by 16 publications

(4 citation statements)

References 87 publications

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“…On the other hand, the Temkin model identified the adsorption processes as chemical or physical. For both adsorbents, the Temkin constant ( B T ) value was determined to be B T > 40 kJ/mol, suggesting the chemisorption phenomenon of NH 4 + -N and P adsorption. − …”

Section: Resultsmentioning

confidence: 96%

“…The adsorption capacity of CMLDH-HAP-N for NH 4 + -N remained constant over pH 2–6; after that the adsorption capacity decreased with the increasing pH resulting from the formation of dissolved OH – and CO 3 2– complexes, supported by the findings of pH pzc . Conversely, when the pH rose, the P adsorption capacity increased. − Adsorption dosages from 1 to 5 g/L reduced the adsorption capacities while increasing the removal efficiencies of NH 4 + -N and P (Figure S5D). One possible explanation for the reduced adsorption capacity at higher dosages could be unsaturated adsorption sites indicating that excess CMLDH-HAP might limit the available binding sites.…”

Section: Resultsmentioning

confidence: 99%

“…The maximum removal rate, with R values of 75.2 and 87% for NH 4 + -N and P, respectively, matched the experimentally obtained data. The suggested ANN model is more reliable for modeling new input–output correlations because of the correspondence between the results of the actual measurements and the ANN projections. − …”

Section: Resultsmentioning

confidence: 99%

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Nutrient Recovery for Fertilizer Production and Wastewater Treatment for a Circular Economy

Akter,

Hosen,

Gilroyed

et al. 2024

ACS Sustainable Resour. Manage.

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The recovery of nutrients, particularly nitrogen (N) and phosphorus (P), from wastewater plays a crucial role in mitigating eutrophication and advancing sustainability. This paper introduces a novel approach for recovering these essential elements from municipal wastewater (MWW) using an innovative composite, calcined magnetic layered double hydroxide/ hydroxyapatite (CMLDH-HAP). The adsorbent was synthesized by precipitating hydroxyapatite onto magnetic layered double hydroxides derived from agricultural waste, followed by calcination. The adsorption behaviors, characterized by heterogeneous monolayer chemisorption adsorption, and the underlying mechanisms, including interlayer cation and ligand exchange and surface precipitation, demonstrated sustainable recovery of NH 4 + -N and P from real wastewater treatment plant effluent in column experiments, with a breakthrough time of 15 min. The N-and P-adsorbed CMLDH-HAP was then utilized as an eco-friendly, slowrelease fertilizer to enhance the germination, growth, and blooming of Madagascar periwinkle (Catharanthus roseus). Furthermore, the desorption of N and P using a 0.5 M NaHCO 3 solution enabled the regeneration of CMLDH-HAP, rendering it suitable for recycling N and P from wastewater. Economic viability considerations explored more cost-effective wastewater treatment options, underscoring the potential of CMLDH-HAP. This study thus presents a sustainable solution that integrates the reuse of agricultural waste, effective wastewater treatment, and the recovery of N and P nutrients as fertilizer sources. Implementing the demonstrated technologies can help minimize the environmental impact of wastewater and promote circular economy principles.

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Section: Resultsmentioning

confidence: 96%

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Nutrient Recovery for Fertilizer Production and Wastewater Treatment for a Circular Economy

Akter,

Hosen,

Gilroyed

et al. 2024

ACS Sustainable Resour. Manage.

Self Cite

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“…In addition, places and workshops for washing and repairing cars throw large amounts of motor oils and lead-containing fuel into the sewage network, and thus reach the river water [12]. The drifts from the city to the sewage network, which washed away large quantities of lead compounds resulting from the combustion of vehicle fuel, may be one of the most important sources of lead in wastewater [13]. The findings also demonstrated that there are monthly fluctuations in the levels of dissolved lead and cadmium in the water, as an increase in its level was seen during the hotter months along with a rise in temperature.…”

Section: Cadmium (Cd) Concentration In Watermentioning

confidence: 99%

Use Unio Tigridis as a Bioindicator of Heavy Metal Contamination in the Diwaniyah River

Omran,

Khoen

2023

IOP Conf. Ser.: Earth Environ. Sci.

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The current study aims to estimate the concentrations of lead and cadmium in the water of the Diwaniyah River, based on investigation and study of the concentrations of these elements within the body of the vital indicator, where this organism will be taken from 4 different stations with varying distances to know the concentrations and compare them with the national determinants. The study showed that the main sources of pollution the water of the Diwaniyah River is due to the river’s passage within the city center and the discharge of sewage into it directly and in the role of a treatment agent and throwing waste of all kinds and the increase of human activities in the center, which causes an increase in the concentration of pollutants, including heavy elements. Highly efficient treatment units to reduce pollutants that are disposed directly into the river water, as well as increasing the environmental awareness of the population.

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Luffa cylindrica as a biosorbent in wastewater treatment applications: a comprehensive review

Santos,

De Conto,

Borges

et al. 2024

Cellulose

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Agro-waste-based functionalized and economic adsorbents for the effective treatment of toxic contaminants from tannery effluent

Cited by 16 publications

References 87 publications

Nutrient Recovery for Fertilizer Production and Wastewater Treatment for a Circular Economy

Nutrient Recovery for Fertilizer Production and Wastewater Treatment for a Circular Economy

Use Unio Tigridis as a Bioindicator of Heavy Metal Contamination in the Diwaniyah River

Luffa cylindrica as a biosorbent in wastewater treatment applications: a comprehensive review

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