Impact of Influent Composition and Operating Conditions on Carbon and Nitrogen Removal from Urban Wastewater in a Continuous-Upflow (Micro)Aerobic Granular Sludge Blanket Reactor

Energies, Год журнала: 2023, Номер 16(17), С. 6303 - 6303

Опубликована: Авг. 30, 2023

Aerobic granular sludge is an interesting alternative to the conventional activated (CAS) system and modified-Ludzack–Ettinger (MLE) process for biological wastewater treatment, as it allows a more cost-effective simultaneous removal of carbon (C) nitrogen (N) compounds in single stage. In this study, (micro)aerobic C N from synthetic urban was investigated continuous-double-column-upflow aerobic blanket (UAGSB) system. The UAGSB reactor operated under different dissolved oxygen (DO) ranges (0.01–6.00 mg∙L−1), feed C/N ratios (4.7–13.6), hydraulic retention times (HRTs) (6–24 h). At DO range 0.01–0.30 mg∙L−1, ratio 13.6, HRT 24 h, achieved highest chemical demand (COD), N-NH4+, total inorganic (TIN) efficiencies 86, 99, 84%, respectively. A preliminary assessment energy economic savings associated with also carried out. impact capital operating costs mainly related consumption aeration taken into account. reveals that expenses would result cost around 14 7%, respectively, compared MLE

Язык: Английский

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Determination and implementation of an onsite management system for motor-vehicle wash effluents: A field-scale commercial application toward sector sustainability

Journal of Water Process Engineering, Год журнала: 2023, Номер 56, С. 104513 - 104513

Опубликована: Ноя. 10, 2023

Язык: Английский

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Adsorption of Lead from Aqueous Solution Using Activated Carbon Derived from Rice Husk Modified with Lemon Juice

Sustainability, Год журнала: 2023, Номер 15(22), С. 15955 - 15955

Опубликована: Ноя. 15, 2023

In the present work, activated carbon (RHAC-LJ) was synthesized utilizing rice husk as a source that is with lemon juice. Moreover, adsorptive capacity of RHAC-LJ in removing Pb(II) from aqueous solution investigated. FTIR analysis revealed presence amides, alkenes, carboxyl and hydroxyl groups RHAC-LJ. SEM micrographs illustrate activation juice resulted high pore volume greater diameter. Activation using acid can remove impurities adsorbent surface. The surface area were determined to be 112.87 m2·g−1 0.107 cm3/g, respectively. Adsorption kinetics followed pseudo-second-order equation (R2 = 0.9941) rate constant 3.3697 g/mg·min for Pb (II), which indicates chemisorption rate-determining step process. BBD model RSM applied studying effects pH, stirring speed dosage their interactions on removal efficiency Analysis variance used examine significance model, independent parameters, interactions. 98.49% attained following optimal conditions: 197 rpm, pH 5.49, 0.3487 g. Overall, work illustrates potential low-cost synthetic wastewater.

Язык: Английский

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Solid Waste Management and Sustainability in Deltas: Introduction and Updates

Опубликована: Янв. 1, 2024

Deltas, comprising approximately 5% of the Earth's land surface, occupy a high population density globally. The distribution depends on geographical location and countries or regions Deltas under investigation. Each Delta is unique influenced by specific hydrological, geological, environmental conditions. face pressing need for effective waste management strategies to mitigate degradation health risks. This chapter an introduction critical nexus solid (SWM) sustainability in shedding light corresponding challenges barriers. chapter's main findings would strengthen contribution stakeholders, policy-makers, private public sectors achieving sustainable SWM strategies.

Язык: Английский

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Solid Waste Management and Sustainability: Introduction and Updates

Sustainable development goals series, Год журнала: 2024, Номер unknown, С. 1 - 16

Опубликована: Янв. 1, 2024

Язык: Английский

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