Up-concentration of nitrogen from domestic wastewater: A sustainable strategy from removal to recovery

Qin, Yangjie; Wang, Kaichong; Xia, Qing; Yu, Siqi; Zhang, Maonan; An, Ying; Zhao, Xiaodan; Zhou, Zhen

doi:10.1016/j.cej.2022.138789

Cited by 36 publications

(10 citation statements)

References 145 publications

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“…The pH of this wastewater was 8.6 ± 0.4 (Table 2), which was close to the values reported by other studies [40,41] in tannery wastewaters sampled in Arequipa and Brazil, respectively, and consistent with reported values in tannery wastewaters from other regions ranging from 8.3 to 9.2 [42,44,45]. In the unhairing process, it is common to use bases such as sodium hydroxide and calcium hydroxide, or slaked lime (Ca(OH) 2 ).…”

Section: Physicochemical Parameterssupporting

confidence: 91%

“…Tannery effluent contains protein, hair, skin, and emulsified fats that are removed from the hides and released in the effluent, increasing the total solids, nitrogen, and organic carbon contents [43]. Total nitrogen (490 ± 10 mg/L) was 10-20 times higher than typical of US municipal wastewater (MPLs of up to 20 mg/L) (e.g., [44]) and approximately 1500 times higher than Peruvian wastewater discharge standards (MPL of 0.315 mg/L) (DS 004-2017-MINAM). While nitrogen speciation was not conducted, other authors [5,45,46] have found similar high total nitrogen loading in other analyzed tannery wastewaters.…”

Section: Physicochemical Parameters Of the Harvested Rsip Effluent Us...mentioning

confidence: 99%

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Acute Ecotoxicity Potential of Untreated Tannery Wastewater Release in Arequipa, Southern Peru

Tejada-Meza,

Arenazas-Rodríguez,

Garcia-Chevesich

et al. 2023

Sustainability

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The centralized Rio Seco Industrial Park (RSIP) tannery collective in the Southern Peruvian city of Arequipa releases untreated tannery wastewater into a proximal creek that is a tributary of the Chili River. As industrial leather tanning wastewater contains high concentrations of metal(loid)s, salts, dyes, and organics, this complex mixture could exert a myriad of toxicological effects on the surrounding ecosystem. The RSIP effluent was analyzed to quantify the acute ecotoxicity and ecotoxicological status of this untreated industrial wastewater at multiple trophic levels with the following bioindicators: the floating macrophyte Lemna minor, invertebrates Daphnia magna and Physa venustula, and the amphibian Xenopus laevis. A physicochemical characterization of the RSIP effluent revealed a highly contaminated waste stream. In addition to chromium (10.4 ± 0.4 mg/L) and other toxic metals, the water harbored extremely high concentrations of total dissolved solids (67,770 ± 15,600 mg/L), biochemical oxygen demand (1530 ± 290 mg/L) and total nitrogen (490 ± 10 mg/L). The toxicological responses of certain bioindicator species tested were evaluated after exposure to 0, 1.5, 3.0, and 4.5% untreated tannery wastewater blended with dechlorinated tap water. L. minor experienced a significant decrease in the number of fronds, wet weight, and dry weight at the lowest blended wastewater of 1.5%. Bioassays with D. magna showed the effect on neonatal mortality with a calculated LC50 of 1.1% for 48 h. Bioassays with P. venustula embryos showed high sensitivity to diluted effluent with complete mortality at 3.0% wastewater and above. Finally, X. laevis showed a high sensitivity to the dilutions with an LC50 of 1.6 for embryos and 1.8% for tadpoles. Although RSIP wastewater contains many potentially toxic components, chromium and total dissolved solids, with a major contribution from sodium, are best correlated with acute toxicity variables. This suggests that conductivity or analogous measurements could provide a rapid and affordable forensic tool to query acute ecosystem pressures. Collectively, the results indicate that the release of untreated tannery wastewater from RSIP can exert pronounced acute impacts across trophic levels with the need for treatment or dilution to below 1% of total flow. As the assays addressed acute toxicity, the necessary treatment and/or dilution to mitigate chronic effects is likely much lower. In conclusion, untreated RSIP tannery wastewaters represent an ecological risk to downstream aquatic ecosystems; this needs to be addressed to prevent current and future environmental consequences.

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Section: Physicochemical Parameterssupporting

confidence: 91%

Section: Physicochemical Parameters Of the Harvested Rsip Effluent Us...mentioning

confidence: 99%

Acute Ecotoxicity Potential of Untreated Tannery Wastewater Release in Arequipa, Southern Peru

Tejada-Meza,

Arenazas-Rodríguez,

Garcia-Chevesich

et al. 2023

Sustainability

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“…In the present study we made the rest of the isotherms with the activated zeolite in the Na form since it better represents the operating conditions when working with this adsorbent material in cation exchange columns to treat AnMBR permeate. Since the exchange columns combine loading cycles in which the ammonia is retained, followed by a regeneration cycle that releases and concentrates it (Qin et al [30] reviewed different studies and observed an ammonium concentration factor between 8-20 times). For the regeneration phase, reagents containing sodium (NaCl or NaOH, for example) are normally used so that after regeneration, the zeolite is in the Na form.…”

Section: Effect Of Zeolite Activation and Particle Sizementioning

confidence: 99%

Zeolites for Nitrogen Recovery from the Anaerobic Membrane Bioreactor Permeate: Zeolite Characterization

Godifredo

Ferrer

Seco

et al. 2023

Water

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Anaerobic Membrane Bioreactor technology has great advantages for treating wastewater, including energy recovery from organic matter. However, when the legislation requires that effluent standards be met in sensitive areas, this treatment cannot remove the nutrients, thus the permeate generated needs post-treatment. Apart from the biological processes, ion exchange is an alternative treatment for this stream since it can remove nutrients and concentrate them for later recovery as fertilizers. In this work, the feasibility of using a natural zeolite (clinoptilolite) for treating NH4 from AnMBR permeate was studied and tests were carried out on the adsorption kinetics of ammonium. Isotherm tests verified that activating natural zeolite to its -Na form improves its performance by 20% and increases qe from 2.37 to 2.86 mg NH4-N/g for a Co of 30 mg NH4-N/L. It was also found that the cations present in the water (especially Ca2+ and Na+) caused a 22% reduction in ammonium adsorption while organic matter was responsible for improving the retained ammonium by 22%. It was also found that the working pH (7.2 ± 0.2) is close to the optimal pH range (6–7) for zeolite performance. The tests on the AnMBR permeate indicate that clinoptilolite is a suitable material since treating this stream can retain up to 7.44 mg NH4-N/g.

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“…Through ongoing exploration and innovative efforts, we have the potential to develop improved and economically viable wastewater treatment technologies. This progress could transform wastewater into valuable renewable resources, fostering a mutually beneficial scenario that promotes both sustainable development and environmental preservation. − …”

Section: Introductionmentioning

confidence: 99%

A Solar-Driven System Enabling Simultaneous Water Recovery, Heavy Metal Recycling, and Electricity Generation

Hou,

Sun,

Wang

et al. 2024

ACS EST Eng.

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The global depletion of natural resources has provided the impetus for the development of low-cost, environmentally friendly technologies to recover valuable resources from wastewater. In this study, we present a novel solar-driven thermal-electric cogeneration system (STECS) that, by virtue of solar energy alone, can recover metals from metal-containing wastewater and generate electricity while recovering fresh water by interfacial evaporation. STECS consists of three parts: a simulated electroplating wastewater chamber, a titanium dioxide/carbon fiber (TiO2/CF) photoanode, and a platinum sheet cathode. We demonstrate that solar-irradiated STECS recovers copper from simulated copper-containing wastewater at the platinum sheet cathode interface at a rate of 2.6 g m–2 h–1. A maximum power density of 910 mW m–2 (at one solar intensity) was also generated. In addition, the water evaporation rate of STECS can reach 1.2113 kg m–2 h–1 under one solar intensity condition. Our research explores a novel water treatment technology utilizing solar energy to achieve two birds with one stone, demonstrating that the system can simultaneously achieve wastewater reduction, metal resource recovery, EDTA degradation, and process power production, providing a promising solution and blueprint for alleviating global water/energy shortages while achieving sustainable development.

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Up-concentration of nitrogen from domestic wastewater: A sustainable strategy from removal to recovery

Cited by 36 publications

References 145 publications

Acute Ecotoxicity Potential of Untreated Tannery Wastewater Release in Arequipa, Southern Peru

Acute Ecotoxicity Potential of Untreated Tannery Wastewater Release in Arequipa, Southern Peru

Zeolites for Nitrogen Recovery from the Anaerobic Membrane Bioreactor Permeate: Zeolite Characterization

A Solar-Driven System Enabling Simultaneous Water Recovery, Heavy Metal Recycling, and Electricity Generation

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