Experimental study on the water purification performance of biochar-modified pervious concrete

Xie, Chao; Long, Yuan; Tan, Hao; Zhang, Yuze; Zhao, Min; Jia, Yinghui

doi:10.1016/j.conbuildmat.2021.122767

Cited by 36 publications

(10 citation statements)

References 36 publications

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“…1A). Moreover, with the participation of ecoN-concrete, lots of dissolved compounds (such as dissolved organic matters, S 2− , Fe 2+ ) were absorbed by the concrete rapidly (Xie et al, 2021). Simultaneously, the micro-occulation and coprecipitation effect of Ca 2+ , Ca(OH) 2 , and Al(OH) 3 released from the eco-concrete quickly removed the suspended colloids and particles (such as insoluble organic matters, suspended solids), which was the main reasons for turbidity in the black-odorous water (Kitamura et al, 2000).…”

Section: Effect Of Econ-concrete On Black-odorous Water Remediationmentioning

confidence: 99%

Long-term effective remediation of black-odorous water via regulating calcium nitrate sustained-release

Wan,

Zha,

et al. 2023

Environ Monit Assess

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Nitrate addition was reported as the cost-effective method for remediating black-odorous water, which was induced by the de ciency of electron acceptors. However, the excessive release of nitrate and nitrite and lack of long-term effectiveness caused by directly dosing nitrate method signi cantly limited its application. Herein, we constructed a nitrate sustained-release ecoN-concrete, in which calcium nitrate (Ca(NO 3 ) 2 ) was dosed in the concrete revetment, to remediate black-odorous water. Identically, chemical oxygen demand (COD), turbidity, ammonia, phosphates, and sulfate were signi cantly removed after loading black-odorous water into an ecoN-concrete-contained reactor, and its removal e ciency was largely dependent on Ca(NO 3 ) 2 dosage. Meanwhile, the released nitrate was only accounted for 25% of the total dosage and nitrite was lower than 1.5 mg/L via 14 days cultivation. After three recycles, the removal e ciencies of COD and turbidity by ecoN-concrete were still higher than 85% indicating this concrete was good at nitrate sustainable release and controlling water re-blackening and re-stinking in suit. Further investigation illustrated that the ecoN-concrete (1) decreased the abundance of Desulfovibrio, Desulfomonile, and Desulforhabdus in the phylum of Desulfobacterota to alleviate the odorous gases production, (2) signi cantly increased the abundance of Bacillus and Thermomonas, which utilized the released-nitrate to consume organic matters and ammonia. This study provided an artful Ca(NO 3 ) 2 dosing strategy and long-term effective method for black-odorous water remediation.

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Section: Effect Of Econ-concrete On Black-odorous Water Remediationmentioning

confidence: 99%

Long-term effective remediation of black-odorous water via regulating calcium nitrate sustained-release

Wan,

Zha,

et al. 2023

Environ Monit Assess

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“…O uso do concreto permeável, com ou sem aditivos, como um mecanismo de drenagem de águas pluviais e residuárias, pode ser uma solução parcial para problemas de drenagem e filtragem de resíduos urbanos. A adição de materiais no concreto com propriedades adsorventes, que visem a melhoria de parâmetros físico-químicos e biológicos de qualidade da água, tem sido objeto de estudo de diversas pesquisas, como Teymouri et al (2020), e no caso do biocarvão por Xie et al (2021).…”

Section: Introductionunclassified

“…A utilização do biocarvão hoje é bem diversificada, seja no sequestro de carbono da atmosfera, filtragem de água ou como adsorvente de poluentes em águas residuárias, dentre outras aplicações, Gupta & Kua (2017), Gwenzi et al (2017), Ahmed et al (2016). O uso do biocarvão como aditivo ao concreto permeável tem o potencial de aumentar a capacidade do concreto permeável de absorver poluentes e melhorar a eficiência do tratamento de poluentes (Xie et al, 2021). De acordo com Kamali et al (2021), a capacidade de adsorção do biocarvão é altamente dependente de sua química de superfície, área de superfície específica, porosidade e forma.…”

Section: Introductionunclassified

“…CC BY 4.0) | ISSN 2525-3409 | DOI: http://dx.doi.org/10.33448/rsd-v10i10.19111 5 DQO em L15-0 (87,1%) e L15-20 (89,3%) e a DBO em L15-0 (88,1%) e L15-20 (90,7%), o que mostra-se ser promissor o uso destes minerais como material adsorvente para remoção de poluentes Nejad et al (2017). analisaram a retenção sustentável e tratamento de águas pluviais urbanas com auxílio de um sistema em colunas de vidro e estrutura metálica com dimensões de 152 x 152 x 700 mm, composta por camada de bloco de concreto permeável com dimensões de 150 x 150 x 150 mm e ao fundo uma camada filtrante de areia de espessura de 150 mm.Os autores destacaram neste estudo que o sistema construído (concreto poroso, zeólita e camada de areia) alcançou eficiência de 74% na remoção do oxigênio dissolvido (OD) e remoção superior a 90% da turbidez.Em busca de melhoria de desempenho na purificação dos parâmetros de NT, PT, DQO, OD e pH da água através do concreto permeável,Xie et al (2021) utilizaram-se de diversos teores de biocarvão no concreto (0, 5, 10, 15, 20, 25 e 30 kg/m³), obtendo assim, com o concreto permeável com teor 20 kg/m³ de biocarvão (amostra G5), taxa de remoção de 89,4%deNT, e com o concreto permeável com 15 kg/m³ de biocarvão (amostra G4) taxa de remoção de 82,0% de PT.Semelhantemente, os pesquisadores Teymouri et al (2020a) e Teymouri et al (2020b) utilizaram concreto poroso contendo adsorventes minerais como um novo método de tratamento de águas residuais. Os resultados mostraram que as…”

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Uso de concreto permeável com aditivos no tratamento de águas residuárias, com enfoque no biocarvão: uma revisão

Clementino

Santiago

Sousa

et al. 2021

RSD

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Nos grandes centros urbanos, a constante impermeabilização das vias intensifica alagamentos e enchentes, gerando inúmeros transtornos à população. O uso do concreto permeável como mecanismo de drenagem de águas pluviais e residuárias tem sido uma solução parcial para esse tipo de problema de drenagem, inclusive com a adição em sua composição de materiais com propriedades adsorventes que visem a melhoria de parâmetros físico-químicos e biológicos da água. Portanto, este artigo tem como objetivo geral trazer importantes resultados de diversos estudos utilizando concreto permeável com adições minerais e mostrar os benefícios nas propriedades mecânicas e adsorventes desse tipo de concreto, com ênfase na utilização do biocarvão. Para isso, optou-se como metodologia, fazer uma breve revisão da literatura, no qual foram analisadas pesquisas concluídas disponíveis em base de dados online como Scopus, Science Direct a partir do ano de 2015 utilizando como descritores em inglês: “Concrete” AND “Biochar”, “Concrete porous” AND “Biochar”, “Pervious concrete” AND “Biochar”, “Treatment of water” AND “Concrete porous”, “Cementitious materials” AND “Biochar”. Foram selecionadas 51 referências sendo assim especificados: 48 artigos científicos, 1 norma e 2 capítulos de livros. Constatou-se que a adição de minerais adsorventes e biocarvão no concreto podem promover melhoria de parâmetros de qualidade da água como diminuição de turbidez, nitrogênio totais (NT), Fósforo Totais (PT), DQO, DBO, entre outros, e promoverem, em alguns casos, ganho de resistência mecânica dos concretos produzidos.

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“…Sludge-based biochar is the gas and oil produced through the pyrolysis reaction of sludge under anaerobic conditions [10], as well as the solid residue, namely biochar [11]. Biochar is an environmental functional material with good adsorption [12], rich pore structure, reliable surface properties etc. [13].…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on the Treatment of Rural Domestic Wastewater Using the Multi-Soil-Layering System Filled with Sludge-Based Biochar

Wang¹,

Zhang²,

Guo³

et al. 2021

ACSM

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This paper aims to improve the treatment effect of the multi-soil-layering system (MSL) on rural domestic wastewater. For this, sludge-based biochar materials were selected in the experiments to study its impacts on the treatment of rural domestic wastewater using the MSL. The comparative experiments were conducted for the three MSL systems filled with different materials: the sludge-based biochar (a), wood chips (b), and charcoal (c). The results showed that when the sludge-based biochar material was used as a filler, the removal effect of COD, NH4+-N, TN, TP is better than that of wood chips and charcoal, and the removal rates were 80%, 90%, 65% and 92%, respectively, meeting the Grade A standard specified in the Hebei Province Rural Domestic wastewater Discharge Standard (DB13/2171-2015); hydraulic loading rates (HLRs) have a great impact on the removal of pollutants, and the pollutant indicators in the system (a)re affected by the HLRs in different degrees, i.e., NH4+-N>TP>COD>TN from high to low; considering the treatment efficiency and pollutant removal effect, the HLRs should be selected between 800L/(m2·d) and 1200L/(m2·d). It’s concluded finally that the sludge-based biochar material can strengthen the removal effect of the MSL system. This study is of theoretical value for the further research on MSL system and resource utilization of the sludge.

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Experimental study on the water purification performance of biochar-modified pervious concrete

Cited by 36 publications

References 36 publications

Long-term effective remediation of black-odorous water via regulating calcium nitrate sustained-release

Long-term effective remediation of black-odorous water via regulating calcium nitrate sustained-release

Uso de concreto permeável com aditivos no tratamento de águas residuárias, com enfoque no biocarvão: uma revisão

Experimental Study on the Treatment of Rural Domestic Wastewater Using the Multi-Soil-Layering System Filled with Sludge-Based Biochar

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