Simple metal model for predicting uptake and chemical processes in sewage-fed aquaculture ecosystem

Azanu, David; Jørgensen, Sven Erik; Darko, Godfred; Styrishave, Bjarne

doi:10.1016/j.ecolmodel.2015.07.023

Cited by 11 publications

(6 citation statements)

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“…Ecotoxicological models can be developed for selected fish species, which have the capacity to accumulate pollutants within their tissues [ 10 ]. Several studies have generated prediction models [ 31 , 32 , 33 , 34 , 35 , 36 , 37 , 38 , 39 ]. For instance, mathematical models (One Compartment Approach) were developed in order to predict internal concentrations of organic chemicals in fish [ 31 ].…”

Section: Introductionmentioning

confidence: 99%

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A Machine Learning Approach in Analyzing Bioaccumulation of Heavy Metals in Turbot Tissues

Petrea

Costache²,

Moga

et al. 2020

Molecules

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Metals are considered to be one of the most hazardous substances due to their potential for accumulation, magnification, persistence, and wide distribution in water, sediments, and aquatic organisms. Demersal fish species, such as turbot (Psetta maxima maeotica), are accepted by the scientific communities as suitable bioindicators of heavy metal pollution in the aquatic environment. The present study uses a machine learning approach, which is based on multiple linear and non-linear models, in order to effectively estimate the concentrations of heavy metals in both turbot muscle and liver tissues. For multiple linear regression (MLR) models, the stepwise method was used, while non-linear models were developed by applying random forest (RF) algorithm. The models were based on data that were provided from scientific literature, attributed to 11 heavy metals (As, Ca, Cd, Cu, Fe, K, Mg, Mn, Na, Ni, Zn) from both muscle and liver tissues of turbot exemplars. Significant MLR models were recorded for Ca, Fe, Mg, and Na in muscle tissue and K, Cu, Zn, and Na in turbot liver tissue. The non-linear tree-based RF prediction models (over 70% prediction accuracy) were identified for As, Cd, Cu, K, Mg, and Zn in muscle tissue and As, Ca, Cd, Mg, and Fe in turbot liver tissue. Both machine learning MLR and non-linear tree-based RF prediction models were identified to be suitable for predicting the heavy metal concentration from both turbot muscle and liver tissues. The models can be used for improving the knowledge and economic efficiency of linked heavy metals food safety and environment pollution studies.

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Section: Introductionmentioning

confidence: 99%

“…Even though the prediction models of heavy metals in fish have been previously approached [ 36 , 37 , 38 , 39 ], new prediction models should be developed in order to improve the pre-existing data.…”

Section: Introductionmentioning

confidence: 99%

A Machine Learning Approach in Analyzing Bioaccumulation of Heavy Metals in Turbot Tissues

Petrea

Costache²,

Moga

et al. 2020

Molecules

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“…Accumulation of excess amounts of metal contaminants in the environment threatens the health of plants and animals because these metals exert biological effects on all life forms 7,8. Metal pollution in soils is of concern to researchers and regulatory agencies because most metals have adverse health effects 9. Long term exposure to metals can result in reduced intelligence in humans, DNA damage, and memory impairment 10,11.…”

Section: Introductionmentioning

confidence: 99%

Human Health Risk and Bioaccessibility of Toxic Metals in Topsoils from Gbani Mining Community in Ghana

Darko

Boakye

Nkansah

et al. 2019

Journal of Health and Pollution

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Background. Anthropogenic activities such as artisanal mining pose a major environmental health concern due to the potential for discharge of toxic metals into the environment. Objectives. To determine the distribution and pollution patterns of arsenic (As), iron (Fe), nickel (Ni), cobalt (Co), chromium (Cr), manganese (Mn), copper (Cu) and zinc (Zn) in the topsoil of a mining community in Ghana, along with potential human health risks and in vitro bioaccessibility. Methods. Concentrations of metals were determined using X-ray fluorescence techniques and validated using inductively coupled plasma-mass spectrometry. Results. Concentrations of the metals in topsoil were in the order of magnitude of Cu (31.38 mg/kg) < Ni (45.39 mg/kg) < As (59.66 mg/kg) < Cr (92.87 mg/kg) < Zn (106.98 mg/kg) < Mn (1195.49 mg/kg) < Fe (30061.02 mg/kg). Geo-statistical and multivariate analyses based on hazard indices including contamination, ecological risks, geo-accumulation, and pollution load suggest that the topsoils are contaminated in the study area. The potential ecological risk index (PERI) showed high ecological risk effects (PERI=269.09), whereas the hazard index (1×10 −7 ) and carcinogenic risk index (1×10 −5 ) indicated low human health risks. Elevated levels of As, Cr, Ni, and Zn were found to emanate from anthropogenic origins, whereas Fe, Mn, and Cu levels were attributed mainly to geological and atmospheric depositions. Physicochemical parameters (pH, electrical conductivity and total organic carbon) showed weak positive correlations to the metal concentrations. Elemental bioaccessibility was variable, decreasing in the order of Mn (35± 2.9%) > Cu (29± 2.6%) > Ni (22± 1.3%) > As (9± 0.5%) > Cr (4± 0.6%) > Fe (2± 0.4%). Conclusions. Incorporation of in-vitro bioaccessibility into the risk characterization models resulted in a hazard index of less than 1, implying low human health risks. However, due to accumulation effects of the metals, regular monitoring is required. Competing Interests. The authors declare no competing financial interests.

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“…Atıksu ile beslenerek yetiştirilen su ürünlerinin insan ve hayvan beslenmesinde kullanılması birçok çalışma ile araştırılmıştır: [37,38,39,40,41,42,43,44,45,46] Bu balık türleri genel olarak ılıman kökenli ve sıcak sularda yaşamaktadırlar. Ancak, yıl boyunca mevsimsel olarak düşük sıcaklıklara sahip iklimlerde hayatta kalabilmektedirler [47].…”

Section: Arıtılmış Atıksuların Su üRünleri Yetiştiriciliğinde Kullanımıunclassified

“…Atıksuların su ürünleri için kullanabilmesinin ön şartı sulamada olduğu gibi mikrobiyal kirlilik parametrelerinin sınır değerler altında olmasıdır. Atıksu ile beslenerek yetiştirilen su ürünlerinin insan ve hayvan beslenmesinde kullanılması birçok çalışma ile araştırılmıştır: [37,38,39,40,41,42,43,44,45,46]. Bu alanda kullanılan balık türlerinin çoğunlukla; Rohu balığı (Labeo rohita), Hint sazanı (Catla catla), Mrigal carp (Cirrhinus mrigala), Tilapia (Oreochromis mossambicus) ve Sazan balığı (C. carpio), Micropterus, Kocabaş Sazan (Aristichthys nobilis), Gümüş sazanı (Hypophthalmichthys molitrix), Kadife balığı (tinca tinca),öpüşen gurami (Helostoma temminckii),Tinfoil barb (Puntius gonionotus) ve Dev gurami (Osphronemusg oramy)'dir.…”

Section: Arıtılmış Atıksuların Su üRünleri Yetiştiriciliğinde Kullanımıunclassified

Aritilmiş Atiksularin Yeni̇den Kullanim Alanlarinin Değerlendi̇ri̇lmesi̇

Kâti̇p¹

2018

Ömer Halisdemir Üniversitesi Mühendislik Bilimleri Dergisi

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ÖZDünyada kentleşme, nüfus ve endüstrileşmenin artması ve iklim değişikliği nedeni ile su ihtiyacı giderek artmaktadır. Bu çalışmada artan su ihtiyacını karşılamak için evsel, kentsel ve endüstriyel atıksuların arıtılarak yeniden kullanımı konusu araştırılmıştır. Toksik maddeler içeren bazı endüstriyel atıksuların sulama ve su ürünlerinde kullanımı sonucunda, metal birikimleri olduğu, toprağın ve yeraltı suyu kalitesinin bozulduğu ve toprakta tuzluluk problemleri yarattığı görülmüştür. Bu nedenle, evsel, kentsel ve gıda endüstrisi atıksularının temiz su ile karıştırılarak kullanılmasının uygun olduğu ve sulama ve su ürünleri yetiştiriciliği gibi direkt temas gerektiren kullanımlarda metaller, diğer toksik organik/inorganik kirleticiler ve mikrobiyal açıdan iyi su kalitesinde olması gerektiği görülmüştür. Su ürünleri ve sulamada gıda endüstrisi atıksularının kullanımının daha az risk taşıyabileceği ve birbirine yakın konumda bulunan endüstiyel kuruluşların atıksularının yeniden kullanımının endüstriyel simbiyoz yaklaşımı ile değerlendirilmesi gerektiği düşünülmüştür. Gri suların tuvalet temizliğinde kullanımının en uygun yeniden kullanım alanlarından biri olduğu görülmüştür. Ülkemizde arıtılmış atıksuların yeniden kullanımı devlet tarafından teşviklerle yaygınlaştırılmalıdır.Anahtar Kelimeler: Arıtılmış evsel, kentsel ve endüstriyel atıksu, yeniden kullanım, su kirliliği EVALUATION OF TREATED WASTEWATER REUSE AREAS ABSTRACTBecause of the urbanization, industrialization, population growth and climate change in the world water demand increases rapidly. The reuse of treated wastewater to meet water demand was investigated in this study. It was seen that metal bioaccumulation, the deterioration of soil and water quality and salty problems had been detected with the use of some industrial wastewaters in irrigation and aquaculture. For this reason, the reuse of domestic, urban and food industry wastewaters mixed with clean water was more appropriate. Especially metals, other toxic organic/inorganic pollutants and microbial quality of wastewater should be good water quality level for irrigation and aquaculture. The utilization of food industry wastewater in aquaculture feeding and irrigation had less healty risk. The possibility of reusing each other's wastewater of industiries with the industrial symbiosis approach should be investigated. Grey water usage in toilet could be suitable. The studies of treated wastewater reuse in water management of Turkey should be generalized.

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Simple metal model for predicting uptake and chemical processes in sewage-fed aquaculture ecosystem

Cited by 11 publications

References 11 publications

A Machine Learning Approach in Analyzing Bioaccumulation of Heavy Metals in Turbot Tissues

A Machine Learning Approach in Analyzing Bioaccumulation of Heavy Metals in Turbot Tissues

Human Health Risk and Bioaccessibility of Toxic Metals in Topsoils from Gbani Mining Community in Ghana

Aritilmiş Atiksularin Yeni̇den Kullanim Alanlarinin Değerlendi̇ri̇lmesi̇

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