Phytotoxicity indexes and removal of color, COD, phenols and ISA from pulp and paper mill wastewater post-treated by UV/H2O2 and photo-Fenton

Neves, Ludmila Carvalho; Souza, Jeanette Beber de; Vidal, Carlos Magno de Souza; Herbert, Lucila Thomsett; Souza, Kely Viviane de; Martins, Kelly Geronazzo; Young, Brian J.

doi:10.1016/j.ecoenv.2020.110939

Cited by 26 publications

(8 citation statements)

References 51 publications

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“…Pulp and paper production is one of the most freshwater-consuming industries in the world; consequently, it is one of the largest producers of wastewater. Hence, the toxic load of pulp and paper mills (PPMs) is extremely high, and they are considered a major source of pollution [56]. They have a high chemical load of about 700 different organic and inorganic compounds including phenols, sterols, dioxins, and furans.…”

Section: Phenolic Compounds In Watermentioning

confidence: 99%

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Phenolic Compounds in the Built Environment

Fini¹,

Ayat²,

Pahlavan³

2022

Phenolic Compounds - Chemistry, Synthesis, Diversity, Non-Conventional Industrial, Pharmaceutical and Therapeutic Applications

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This chapter examines source and application of phenolic compounds in the built environment as well as their environmental fate and treatment methods. We further describe the role of phenolic compounds in delaying aging and degradation of outdoor construction elements when exposed to intense solar radiation. In this chapter both plant-based and synthetic sources of phenolic compounds and their fate in the environment were examined. In addition, merits of select sources of phenolic compounds to resist ultraviolet radiation in composites as well as delaying degradation were studied. This chapter further provides insights pertaining to the underlying molecular interactions which afford phenol’s role as an anti-aging additive for outdoor construction elements. This in turn provides a solution to promote bio-economy and enhance sustainability in the built environment.

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Section: Phenolic Compounds In Watermentioning

confidence: 99%

“…They have a high chemical load of about 700 different organic and inorganic compounds including phenols, sterols, dioxins, and furans. Not surprisingly, these wastewaters have been shown to have detrimental impacts on the environment such as endocrine disruption, oxidative stress, and genotoxicity [56].…”

Section: Phenolic Compounds In Watermentioning

confidence: 99%

Phenolic Compounds in the Built Environment

Fini¹,

Ayat²,

Pahlavan³

2022

Phenolic Compounds - Chemistry, Synthesis, Diversity, Non-Conventional Industrial, Pharmaceutical and Therapeutic Applications

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“…The most sensitive parameter to assess the biotreatment efficiency is phytotoxicity index. A positive value indicates lower toxicity [49], whereas its negative value means the seedlings are contaminant-free and non-lethal [50]. Values of PI indices cause toxicity in four categories: low, medium, high, and very high [49,51].…”

Section: Phytotoxicity Indices (Pi)mentioning

confidence: 99%

“…A positive value indicates lower toxicity [49], whereas its negative value means the seedlings are contaminant-free and non-lethal [50]. Values of PI indices cause toxicity in four categories: low, medium, high, and very high [49,51]. These values range from 0 to −0.25, −0.25 to −0.5, −0.5 to −0.75 and −0.75 to −1, respectively [49,51].…”

Section: Phytotoxicity Indices (Pi)mentioning

confidence: 99%

Machine Learning Approach to Predict Quality Parameters for Bacterial Consortium-Treated Hospital Wastewater and Phytotoxicity Assessment on Radish, Cauliflower, Hot Pepper, Rice and Wheat Crops

Rashid

Mirza

Keating

et al. 2022

Water

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Raw hospital wastewater is a source of excessive heavy metals and pharmaceutical pollutants. In water-stressed countries such as Pakistan, the practice of unsafe reuse by local farmers for crop irrigation is of major concern. In our previous work, we developed a low-cost bacterial consortium wastewater treatment method. Here, in a two-part study, we first aimed to find what physico-chemical parameters were the most important for differentiating consortium-treated and untreated wastewater for its safe reuse. This was achieved using a Kruskal–Wallis test on a suite of physico-chemical measurements to find those parameters which were differentially abundant between consortium-treated and untreated wastewater. The differentially abundant parameters were then input to a Random Forest classifier. The classifier showed that ‘turbidity’ was the most influential parameter for predicting biotreatment. In the second part of our study, we wanted to know if the consortium-treated wastewater was safe for crop irrigation. We therefore carried out a plant growth experiment using a range of popular crop plants in Pakistan (Radish, Cauliflower, Hot pepper, Rice and Wheat), which were grown using irrigation from consortium-treated and untreated hospital wastewater at a range of dilutions (turbidity levels) and performed a phytotoxicity assessment. Our results showed an increasing trend in germination indices and a decreasing one in phytotoxicity indices in plants after irrigation with consortium-treated hospital wastewater (at each dilution/turbidity measure). The comparative study of growth between plants showed the following trend: Cauliflower > Radish > Wheat > Rice > Hot pepper. Cauliflower was the most adaptive plant (PI: −0.28, −0.13, −0.16, −0.06) for the treated hospital wastewater, while hot pepper was susceptible for reuse; hence, we conclude that bacterial consortium-treated hospital wastewater is safe for reuse for the irrigation of cauliflower, radish, wheat and rice. We further conclude that turbidity is the most influential parameter for predicting bio-treatment efficiency prior to water reuse. This method, therefore, could represent a low-cost, low-tech and safe means for farmers to grow crops in water stressed areas.

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“…Ainda, Neves et al (2020) pós-trataram efluente de indústria de papel e celulose com H 2 O 2 /UV sob as condições de pH 8,0, dosagem de H 2 O 2 de 200 mg L -1 e irradiação UV por 90 min. O efluente tratado, o qual foi submetido ao pós-tratamento, apresentava características de 194,3 mg L -1 de DQO, 352,3 uH e 6,1 UNT.…”

Section: Aplicações Do Processo H 2 O 2 /Uvunclassified

A Influência Das Vertentes Na Gestão Urbana

Bonifácio¹,

Nóbrega²

2021

Gestão Urbana Sustentável, Águas Urbanas

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O processo de urbanização desenfreada torna o meio físico vulnerável às ações antrópicas, e condiciona a vários problemas de ordem socioambientais. O excesso de superfícies impermeabilizadas, resultante do acelerado crescimento urbano, reduz a infiltração da água da precipitação e aumenta a velocidade do escoamento da água em superfície, neste sentido, provoca alterações morfológicas nas vertentes e no funcionamento dos fluxos hídricos superficiais e subsuperficiais. À medida que a impermeabilização produzida pela urbanização aumenta, as alterações são mais intensas e os riscos de degradação tornam-se mais críticos. O conhecimento da dinâmica das vertentes e dos efeitos da urbanização sobre ela, fornecem subsídios para um planejamento urbano sustentável.

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Phytotoxicity indexes and removal of color, COD, phenols and ISA from pulp and paper mill wastewater post-treated by UV/H2O2 and photo-Fenton

Cited by 26 publications

References 51 publications

Phenolic Compounds in the Built Environment

Phenolic Compounds in the Built Environment

Machine Learning Approach to Predict Quality Parameters for Bacterial Consortium-Treated Hospital Wastewater and Phytotoxicity Assessment on Radish, Cauliflower, Hot Pepper, Rice and Wheat Crops

A Influência Das Vertentes Na Gestão Urbana

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