Hydrothermal synthesis of biobased carbonaceous composite from a blend of kraft black liquor and tannin and its application to aspirin and paracetamol removal

Moreira, Wardleison Martins; Viotti, Paula Valéria; Vieira, Melissa Gurgel Adeodato; Baptista, Cristina M. S. G.; Scaliante, Mara Heloísa Neves Olsen; Gimenes, Marcelino Luiz

doi:10.1016/j.colsurfa.2020.125597

Cited by 20 publications

(3 citation statements)

References 96 publications

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“…In turn, value recovery at the raw material acquisition phase, includes the development of bioactive compounds from agricultural waste [38]. Value recovery at the manufacturing phase includes obtaining chemicals of high added-value from the waste from ethanol production [57], creating new products from whey (a by-product from the manufacturing of dairy products) [61], recovery of biocompounds from black liquor (kraft paper production) [49]; recovery of omega-3 from fish oil [60]; production of chemicals, using fast pyrolysis, from eucalyptus fines [50]; production of biocellulose films from scraps of the commercial production of bandages [51], and biochar from coffee silverskin (from coffee processing units) [66]. Value recovery at the end-of-life phase, in turn, includes recovering phosphorus from eggshell [78] and recovering oil from spent coffee grounds (from coffee shops) [66].…”

Section: Value Recovery From Wastementioning

confidence: 99%

Current Panorama, Practice Gaps, and Recommendations to Accelerate the Transition to a Circular Bioeconomy in Latin America and the Caribbean

et al. 2022

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The rampant use of resources and the increasing risk of scarcity have been contributing to greater awareness regarding the need for maintaining resources in use for longer and the shift to renewable alternatives, in which perspective the concept of a circular bioeconomy (CBE) has been permeating the most diverse sectors. Therefore, the study's aims were manifold: identify (i) existing practices and initiatives, (ii) barriers and potential opportunities and (iii) existing gaps for advancing a circular bioeconomy in Latin America and the Caribbean (LAC) and (iv) provide recommendations aiming at the development of a circular bioeconomy (CBE) in the region. To that end, a systematic review of the existing academic literature was done, and reports from relevant non-peer reviewed sources were also consulted. CBE practices in LAC are concentrated in only a few of the countries in the region and very much revolve around recovering value from by-products and waste streams. There are a range of economic, technological, environmental, and social barriers. Opportunities for a CBE are mainly related to the use of waste as raw material (found abundantly in the countries being investigated) and the use of new techniques/technologies. The gaps between the current state and a successful CBE are related to policy, scaling-up, collaborations, and establishing efficient business models. Recommendations for a successful CBE in the region include greater engagement of public actors, investing and developing the local economy, establishing biorefineries and industrial parks, and finding new technological routes for bioresources.

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Section: Value Recovery From Wastementioning

confidence: 99%

Current Panorama, Practice Gaps, and Recommendations to Accelerate the Transition to a Circular Bioeconomy in Latin America and the Caribbean

et al. 2022

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“…The first plateau is attributed to saturation caused by the termination of the first monolayer. Then, as the adsorbate concentration increases, a vertical rearrangement of the adsorbed molecules occurs, and more active sites become available for adsorption [41]. Therefore, the newly available adsorption sites lead to a further increase of the adsorption capacity, and a second plateau occurs, which is attributed to a second layer.…”

Section: Isotherm Adsorption Studiesmentioning

confidence: 99%

Application of Sludge-Based Activated Carbons for the Effective Adsorption of Neonicotinoid Pesticides

et al. 2021

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The amount of sludge produced in wastewater treatment plants (WWTPs) has increased over the years, and the methods used to reduce this waste, such as incineration, agricultural use, or disposal in landfills, cause problems of secondary pollution. For this reason, it is necessary to find sustainable and low-cost solutions to manage this waste. Additionally, emerging and priority pollutants are attracting attention from the scientific community as they can generate health problems due to inadequate removal in conventional WWTPs. In this work, a pharmaceutical industry sludge was used as a precursor in the synthesis of four activated carbons (ACs) using different activating agents (ZnCl2, FeCl3∙6H2O, Fe(NO3)3∙9H2O, and Fe(SO4)3∙H2O), to be used for the removal by adsorption of three neonicotinoid pesticides included in latest EU Watch List (Decision 2018/840): acetamiprid (ACT), thiamethoxam (THM), and imidacloprid (IMD). The prepared ACs showed micro–mesoporous properties, obtaining relatively slow adsorption kinetics to reach equilibrium, but despite this, high values of adsorption capacity (qe) were obtained. For example, for AC-ZnCl2 (SBET = 558 m2/g), high adsorption capacities of qe = 128.9, 126.8, and 166.1 mg/g for ACT, THM, and IMD, respectively, were found. In most cases, the adsorption isotherms showed a multilayer profile, indicating an important contribution of the mesoporosity of the activated carbons in the adsorption process.

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“…The sulfite liquor which resulted during cellulose extraction contains sodium salts and hundreds of different organic molecules with many hydroxyl groups obtained from the thermo-chemical braking of α-O-4 and β-O-4 ether bonds between hemicellulose, syringyl, and guaiacyl monomers of lignin [1]. The energetic value of sulfite liquor is known, and thisis the main application; however, a higher degree of interest has emerged intothe separation and valorization of the diversity of biocomponents, including biodiesel, fertilizers, and adsorbents [1][2][3][4][5]. The proposed ionotropic adsorption of carbonaceous and metallic nano/micro-particles with activated chitosan [6,7], simultaneously with the separation of the two ionically interconnected nano-dispersed phases from the residual sulfite liquor, represents an innovative approach, with only a few studieshaving been conducted on this subject [3,8,9].…”

Section: Introductionmentioning

confidence: 99%

Chitosan–Nanolignin Aerogel with Microneedles-Based Architecture Obtained from Spent Sulfite Liquor

Dima,

Tritean,

Capră

et al. 2023

NeXT-Chem 2023

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Hydrothermal synthesis of biobased carbonaceous composite from a blend of kraft black liquor and tannin and its application to aspirin and paracetamol removal

Cited by 20 publications

References 96 publications

Current Panorama, Practice Gaps, and Recommendations to Accelerate the Transition to a Circular Bioeconomy in Latin America and the Caribbean

Current Panorama, Practice Gaps, and Recommendations to Accelerate the Transition to a Circular Bioeconomy in Latin America and the Caribbean

Application of Sludge-Based Activated Carbons for the Effective Adsorption of Neonicotinoid Pesticides

Chitosan–Nanolignin Aerogel with Microneedles-Based Architecture Obtained from Spent Sulfite Liquor

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