Effect of heavy metals in mixed domestic-industrial wastewater on performance of recirculating standing hybrid constructed wetlands (RSHCWs) and their removal

Zhang, Xiaomeng; Wang, Tuan‐Tuan; Xu, Zijia; Zhang, Longzhen; Dai, Yunv; Tang, Xiaoyan; Tao, Ran; Rui, Li; Yang, Yang; Tai, Yu‐Chong

doi:10.1016/j.cej.2019.122363

Cited by 65 publications

(23 citation statements)

References 36 publications

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“…As a result of the current findings, plants play an important role in the removal of Cu, Cr, Fe and Zn from primary treated sewage mixed heavy metals effluent. Similar findings were also being reported by previous researchers (Barya, Gupta, Thakur, et al, 2020; Hui et al, 2005; Yadav et al, 2012; Zhang et al, 2020).…”

Section: Resultssupporting

confidence: 91%

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Utilization of constructed wetland for the removal of heavy metal through fly ash bricks manufactured using harvested plant biomass

2022

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Heavy metal removal by constructed wetland (CWs) is becoming the most efficient and greener technology around the world where plants are used in phytoremediation to degrade, stabilize and remove contaminants from soils, water and waste. The design of CWs for successful phytoremediation in heavy metals contaminated wastewater should not affect the local environment. By‐product generation is another crucial part of phytoremediation's success. In the study, phytoremediation plants (Canna indica and Acorus calamus) biomass has been successfully used in the manufacture of 70 fly‐ash bricks. Further, these bricks are used for CWs to see the efficiency in removing heavy metals pollution. Results found that high rates of Cu (96 %), Zn (95 %), (Fe 93) and Cr (91 %) removal from Canna indica and Acorus calamus were found as compared to the Typha latifoliya, Myriophylhum aquaticum, Ludwigina palustris, Eichhornia crassipes, Schoenoplectus californicus, Cyperus papyrus and Phragmites australis reported by others global researchers which indicates C. indica is the high potential for heavy metal removal and can be strongly used for industrial wastewater. The use of ornamental plants for phytoremediation of contaminated sewage wastewater would also change the landscape of the aquatic environment. This study summarizes viable avenues in the method of using phytoremediation plant biomass for environmental protection and sustainable environmental management.

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Section: Resultssupporting

confidence: 91%

“…Similar findings were also being reported by previous researchers Hui et al, 2005;Yadav et al, 2012;Zhang et al, 2020).…”

Section: Heavy Metals Accumulationsupporting

confidence: 93%

Utilization of constructed wetland for the removal of heavy metal through fly ash bricks manufactured using harvested plant biomass

2022

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“…The problem of heavy-metal pollution in water bodies was becoming increasingly prominent. − The most urgent task of improving the water environment was to reduce heavy-metal pollution. The discharge of industrial wastewater led to the heavy-metal content exceeding the standard for many waters, which was the leading cause of heavy-metal pollution . In addition, metals in the soil entered the water surface through rainfall and other means, polluting the groundwater and severely affecting drinking water sources .…”

Section: Introductionmentioning

confidence: 99%

Adsorption of Hg(II) in an Aqueous Solution by Activated Carbon Prepared from Rice Husk Using KOH Activation

Liu

Sun

et al. 2020

ACS Omega

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With the development of industry, the discharge of wastewater containing mercury ions posed a serious threat to human health. Using biomass waste as an adsorbent to treat wastewater containing mercury ions was a better way due to its positive impacts on the environment and resource saving. In this research, activated carbon (AC) was prepared from rice husk (RH) by the KOH chemical activation method. The characterization results of scanning electron microscopy (SEM), Brunauer−Emmett−Teller (BET), Fourier transform infrared (FTIR), Raman spectroscopy, and X-ray photoelectron spectroscopy (XPS) showed that rice husk-activated carbon (RHAC) had good pore structure and oxygen-containing functional groups. The influences of contact time, initial concentration of Hg(II), adsorbent dosage, pH, and ionic strength on mercury ion removal were investigated. The Langmuir model was most suitable for the adsorption isotherm of RHAC, and its maximum adsorption capacity for Hg(II) was 55.87 mg/g. RHAC still had a high removal capacity for Hg(II) after five regeneration cycles. RHAC had excellent removal efficiency for mercury ion wastewater. At the same time, RH could be used as a nonpolluting and outstanding characteristic adsorbent material.

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“…Being an agricultural country, this scarcity of freshwater resources has driven local farmers in Pakistan to reuse untreated wastewater for irrigation of crops (Mahmood and Malik, 2014). These wastewaters contain many harmful chemicals and heavy metals which accumulate in crops (Afonne and Ifediba, 2020;Topal et al, 2020;Zhang et al, 2020;Zoqi and Doosti, 2020) and up the food chain making them hazardous for consumption.…”

Section: Introductionmentioning

confidence: 99%

Indigenous Bacillusparamycoidesspp. andAlcaligenes faecalis: sustainable solution for bioremediation of hospital wastewater

Rashid

Mirza

Keating

et al. 2020

Environmental Technology

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Farmers near towns and cities are using wide range of untreated wastewaters for crop irrigation in Pakistan due to severe freshwater shortage. The present study aimed to treat different types of wastewater including domestic, hospital, textile, pharmaceutical and mixed wastewaters using indigenous bacterial isolates to remove contaminants and render these wastewaters safer for irrigation. 37 bacterial strains were isolated from the 5 wastewater samples collected from different sites in Lahore, Pakistan. Under optimum growth conditions, the isolates D6, D7 and P1 showed maximum decolourisation potential of 96, 96, 93 %, respectively against hospital wastewater. GCMS analysis of the untreated hospital wastewater confirmed the presence of pharmaceutic pollutants i.e. Phenol, Salicylic acid, Caffeine, Naproxen, Octadecene and Diazepam. These organic compounds were biodegraded into derivate Ticlopidine in the case of isolate D6, derivatives Tetradecene and Griseofulvin in the case of isolate D7, and derivatives Lidocaine and Butalbital in the case of isolate P1. 16S rDNA sequencing was used to identify these isolates. Isolates D6 and D7 showed 100 and 99.86 % homology to Bacillus paramycoides, a novel strain from Bacillus cereus group (Liu et al., 2017). Isolate P1 showed 97.47 % homology to Alcaligenes faecalis. These strains therefore could represent a low-cost and low-tech alternative to bioremediate complex wastewaters prior to irrigation to support the achievement of the Sustainable Development Goal 6 -clean water and sanitation in Pakistan.

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Effect of heavy metals in mixed domestic-industrial wastewater on performance of recirculating standing hybrid constructed wetlands (RSHCWs) and their removal

Cited by 65 publications

References 36 publications

Utilization of constructed wetland for the removal of heavy metal through fly ash bricks manufactured using harvested plant biomass

Utilization of constructed wetland for the removal of heavy metal through fly ash bricks manufactured using harvested plant biomass

Adsorption of Hg(II) in an Aqueous Solution by Activated Carbon Prepared from Rice Husk Using KOH Activation

Indigenous Bacillusparamycoidesspp. andAlcaligenes faecalis: sustainable solution for bioremediation of hospital wastewater

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