scholarly journals Profiling indigenous lead-reducing bacteria from Tempe Lake, South Sulawesi, Indonesia as bioremediation agents

2020 ◽  
Vol 21 (10) ◽  
Author(s):  
AHMAD YANI ◽  
MOHAMAD AMIN ◽  
Fatchur Rohman ◽  
ENDANG SUARSINI ◽  
WIRA EKA PUTRA
Keyword(s):  
Heavy Metals ◽  
Anthropogenic Activities ◽  
Quality Standard ◽  
Morphological Observation ◽  
Comamonas Testosteroni ◽  
Sequencing Data ◽  
Water Contaminants ◽  
Indigenous Bacteria ◽  
South Sulawesi ◽  
Reducing Bacteria

Abstract. Yani A, Amin M, Rohman F, Suarsini E, Putra WE. 2020. Profiling indigenous lead-reducing bacteria from Tempe Lake, South Sulawesi, Indonesia as bioremediation agents. Biodiversitas 21: 4778-4786. The pollution of heavy metals by anthropogenic activities in freshwater, especially in lakes, reduces the quality and endangers the existence of aquatic flora and fauna. This happens in Lake Tempe, which is located, in South Sulawesi, Indonesia. The study aimed to evaluate the content of heavy metals, isolation, and identify a lead reduction of indigenous bacteria as candidates for bioremediation agents. It began by examining the level of cadmium (Cd), copper (Cu), and lead (Pb) in seven sampling sites of Tempe Lake. Furthermore, propagation and isolation, morphological observation, laboratory-scale reduction tests, and species identification of potential bacteria reduction Pb were performed by using 16s rDNA. The reduction test to Pb was measured using Atomic Absorption Spectrometry (AAS), and the research data were analyzed using One-Way ANOVA with the Duncan advanced method. The results showed that the Cd, Cu, and Pb content of the seven sampling points exceeded the water quality standard Following the Indonesian Government Regulation (IGR) and WHO standards. Pb has the highest concentration among the other heavy metals in the water sample reaching 0.40 mg/L. Four bacterial isolates could grow on Pb-enriched media (isolates A, B, C, and D). The Bacillus form was found in two different species bacteria (isolate A and D), while the cocci shape was found in two other species (isolate B and C). Those all Gram-negative bacteria were observed to be a reduction to Pb exposure within a bacterial medium. Interestingly, these indigenous bacteria could decrease Pb concentration ranging from 7.45 to 3.48 ppm for seven days. Furthermore, the sequencing data showed that the indigenous bacteria (isolate D) had a 99.90% similarity to the Comamonas testosteroni strain S-2 constructed using Neighbor-joining phylogenetic analysis. Therefore, the indigenous bacteria C. testosteroni strain S-2 from Tempe lake may be proposed as a bioremediation agent to reduce Pb the water contaminants.

scholarly journals Determination of Heavy Metals in Water Samples from Sungai Kerteh and Sungai Paka, Terengganu, Malaysia

2017 ◽  
Vol 5 (2) ◽  
pp. 74-78
Author(s):  
Nor Sayzwani Sukri ◽  
Jessuta Jothivel ◽  
Rozidaini Mohd Ghazi ◽  
Nor Shahida Shafiee @ Ismail ◽  
Siti Hajar Yaacob ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Dissolved Oxygen ◽  
Water Samples ◽  
Anthropogenic Activities ◽  
Rapid Development ◽  
Chemical Properties ◽  
Heavy Metal Concentration ◽  
Quality Standard ◽  
Heavy Metals Pollution

Rapid development of industrialization and urbanization along Sungai Kerteh and Sungai Pakawas become a problem due to metal pollution. Namely, anthropogenic activities nearby SungaiKerteh and Sungai Paka were contributed to heavy metals pollution into those rivers. The aims forthis study were to determine the selected heavy metals contamination in water samples andcompared with National Water Quality Standard for Malaysia (NWQS). A total of 8 watersamples were collected from both rivers and heavy metal concentration were analyzed usingflame Atomic Absorption Spectroscopy (ASS). Four parameters of physical chemical propertieswere also analyzed which are pH, temperature, dissolved oxygen and turbidity. The ranges ofphysical chemical properties are pH (7.84-8.78), temperature (31.20 -38.70 oC), dissolved oxygen(27.90-107.20%) and turbidity (1.83-10.5 NTU) respectively. The mean of heavy metalsconcentration was ranged as followed; As (2323.00 ug/L) > Hg (571.93 ug/L) > Pb (402.13 ug/L)> Zn (87.13 ug/L) >Cr (74.63 ug/L) > Cu (48.50 ug/L) > Ni (17.25 ug/L) > Cd (11.38 ug/L).When compared with NWQS, most of metals (Cu, Pb, Ni and Zn) are below the NWQS thresholdlimit except As, Cd, Cr and Hg. The output data from this study can be used as database forcontinuous monitoring at both rivers.

scholarly journals THE EFFECT OF ORGANIC MATTER AND INDIGENOUS BACTERIA IN REHABILITATION OF EX- NICKEL MINE AREA

2015 ◽  
Vol 2 (1) ◽  
pp. 522
Author(s):  
Sariwahyuni .
Keyword(s):  
Organic Matter ◽  
Nickel Toxicity ◽  
Indigenous Bacteria ◽  
Mine Area ◽  
South Sulawesi ◽  
Phosphate Availability ◽  
Main Plot ◽  
Reducing Bacteria ◽  
Metal Reducing Bacteria ◽  
Plot Design

<p>This research was aimed to examine the influence of organic matter and indigenous bacteria in rehabilitating the ex-nickel mine area. This research was conducted from August 2012to January 2013 at ex-nickel mine area PT Inco Sorowako South Sulawesi by means of splits plot design technique. Organic matter was set as the main plot and phosphate solvent bacteria, metal reducing bacteria were set assubplotandsub-subplot respectively. Organic matter400 g/polybag(19ton/ha), Pseudomonasaeruginosa2x106cells /ml and Bacillusmegaterium2x106cells /mlwith a dose of20ml/plant were able to reduce the concentration ofNi(II) by 25.83%, increasephospat availability 42.355%, increase thesoilpH from 4.19to 7.5(44.13%) and provide improvedseedsweight 100%.</p><p><strong>Keywords</strong>: Organic matter, indigenous bacteria, Nickel toxicity and Phosphate availability</p>

scholarly journals Water Quality and Heavy Metals Distribution in Surface Water of the Kelantan River Basin (Malaysia)

2019 ◽  
Vol 35 (4) ◽  
pp. 1254-1264 ◽  
Author(s):  
Yet Yin Hee ◽  
Suhaimi Suratman ◽  
Azyyati Abdul Aziz
Keyword(s):  
Heavy Metals ◽  
Water Quality ◽  
River Basin ◽  
Anthropogenic Activities ◽  
Quality Standard ◽  
Aquatic Environments ◽  
Decomposition Of Organic Matter ◽  
River Basin Development ◽  
Kelantan River Basin ◽  
Water Quality Status

This paper explores the water quality status of the Kelantan River from the middle to lower reaches of the basin, during the dry and wet seasons, in order to provide a scientific reference for protecting local aquatic environments and managing river basin development in the future. Although research shows that this river basin is fell in Class I under Malaysian National Water Quality Standard in term of heavy metals, the river was overall classified as slightly polluted, based on the Malaysian Department of Environment-Water Quality Index (DOE-WQI), with total suspended solids (up to 291 mg/L) reaching the allowable threshold limit established by DOE. Field data suggests that the decomposition of organic matter could have resulted in lowering the dissolved oxygen levels in the water column. With regards to heavy metals, it was found that they mainly originated from natural sources, but with an increasing level of contribution from anthropogenic activities.

scholarly journals Distribution of Selected Dissolved and Particulate Heavy Metals in Lake Kenyir, Malaysia

2021 ◽  
Vol 37 (6) ◽  
pp. 1307-1316
Author(s):  
Royston Uning ◽  
Fatin Adlina Md Nasir ◽  
Suhaimi Suratman
Keyword(s):  
Heavy Metals ◽  
Surface Waters ◽  
Anthropogenic Activities ◽  
Quality Standard ◽  
Untreated Sewage ◽  
Particulate Form ◽  
Bottom Waters ◽  
Dissolved Heavy Metals ◽  
The Mean ◽  
Dissolved Form

This study was conducted to determine the concentration and possible sources of dissolved and particulate heavy metals in Lake Kenyir, Terengganu, Malaysia. The heavy metals studied included Cd, Fe, Pb, Zn and Cu. The findings indicated that the mean concentrations found in the dissolved form for surface waters were in decreasing order of Fe>Zn>Pb~Cu>Cd. A similar trend was also recorded for the particulate form i.e., Fe>Zn>Pb~Cu>Cd. In terms of vertical distribution, most of the heavy metals showed a trend of increasing concentrations from the surface to the bottom waters. The main sources of heavy metals were from anthropogenic activities such as discharge of untreated sewage, surface runoff and boat activity. However, the levels of dissolved heavy metals were still lower compared to other study areas in Malaysia. The dissolved heavy metal concentrations were equivalent with Class II based on the National Water Quality Standard for Malaysia.

scholarly journals Geochemical Mapping, Risk Assessment, and Source Identification of Heavy Metals in Road Dust Using Positive Matrix Factorization (PMF)

Atmosphere ◽  
2021 ◽  
Vol 12 (5) ◽  
pp. 614
Author(s):  
Muhammad Faisal ◽  
Zening Wu ◽  
Huiliang Wang ◽  
Zafar Hussain ◽  
Chenyang Shen
Keyword(s):  
Heavy Metals ◽  
Risk Assessment ◽  
Matrix Factorization ◽  
Anthropogenic Activities ◽  
Contamination Factor ◽  
Road Dust ◽  
Positive Matrix Factorization ◽  
Prevention Measures ◽  
Positive Matrix ◽  
The City

Heavy metals in road dust pose a significant threat to human health. This study investigated the concentrations, patterns, and sources of eight hazardous heavy metals (Cr, Ni, Cu, Zn, As, Cd, Pb, and Hg) in the street dust of Zhengzhou city of PR China. Fifty-eight samples of road dust were analyzed based on three methods of risk assessment, i.e., Geo-Accumulation Index (Igeo), Potential Ecological Risk Assessment (RI), and Nemerow Synthetic Pollution Index (PIN). The results exhibited higher concentrations of Hg and Cd 14 and 7 times higher than their background values, respectively. Igeo showed the risks of contamination in a range of unpolluted (Cr, Ni) to strongly polluted (Hg and Cd) categories. RI came up with the contamination ranges from low (Cr, Ni, Cu, Zn, As, and Pb) to extreme (Cd and Hg) risk of contamination. The risk of contamination based on PIN was from safe (Cu, As, and Pb) to seriously high (Cd and Hg). The results yielded by PIN indicated the extreme risk of Cd and Hg in the city. Positive Matrix Factorization was used to identify the sources of contamination. Factor 1 (vehicular exhaust), Factor 2 (coal combustion), Factor 3 (metal industry), and Factor 4 (anthropogenic activities), respectively, contributed 14.63%, 35.34%, 36.14%, and 13.87% of total heavy metal pollution. Metal’s presence in the dust is a direct health risk for humans and warrants immediate and effective pollution control and prevention measures in the city.

The role of colonic sulphate-reducing bacteria in the pharmacology of heavy metals

1994 ◽  
Vol 3 (4) ◽  
pp. 357-360
Author(s):  
L Bolt ◽  
D C Ellwood ◽  
M J Hill ◽  
S Wootton ◽  
J H P Watson
Keyword(s):  
Heavy Metals ◽  
Sulphate Reducing Bacteria ◽  
Reducing Bacteria

scholarly journals Exploiting the Potential in Water Cleanup from Metals and Nutrients of Desmodesmus sp. and Ampelodesmos mauritanicus

Plants ◽  
2021 ◽  
Vol 10 (7) ◽  
pp. 1461
Author(s):  
Roberto Braglia ◽  
Lorenza Rugnini ◽  
Sara Malizia ◽  
Francesco Scuderi ◽  
Enrico Luigi Redi ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Metal Removal ◽  
Anthropogenic Activities ◽  
Cost Effective ◽  
Single Species ◽  
Nitrogen And Phosphorus ◽  
Removal Rates ◽  
Sequential Approach ◽  
Removal Capacity ◽  
Green Microalga

Increasing levels of freshwater contaminants, mainly due to anthropogenic activities, have resulted in a great deal of interest in finding new eco-friendly, cost-effective and efficient methods for remediating polluted waters. The aim of this work was to assess the feasibility of using a green microalga Desmodesmus sp., a cyanobacterium Nostoc sp. and a hemicryptophyte Ampelodesmos mauritanicus to bioremediate a water polluted with an excess of nutrients (nitrogen and phosphorus) and heavy metals (copper and nickel). We immediately determined that Nostoc sp. was sensitive to metal toxicity, and thus Desmodesmus sp. was chosen for sequential tests with A. mauritanicus. First, A. mauritanicus plants were grown in the ‘polluted’ culture medium for seven days and were, then, substituted by Desmodesmus sp. for a further seven days (14 days in total). Heavy metals were shown to negatively affect both the growth rates and nutrient removal capacity. The sequential approach resulted in high metal removal rates in the single metal solutions up to 74% for Cu and 85% for Ni, while, in the bi-metal solutions, the removal rates were lower and showed a bias for Cu uptake. Single species controls showed better outcomes; however, further studies are necessary to investigate the behavior of new species.

scholarly journals Achieving sustainable coastal environment in Langkawi, Malaysia

2017 ◽  
Author(s):  
Mazlin Mokhtar ◽  
Minhaz Farid Ahmed ◽  
Khai Ern Lee ◽  
Lubna Alam ◽  
Choo Ta Goh ◽  
...  
Keyword(s):  
Anthropogenic Activities ◽  
Sediment Quality ◽  
Pollution Index ◽  
Quality Standard ◽  
Coastal Environment ◽  
Coastal Pollution ◽  
Marine Biodiversity ◽  
Average Value ◽  
Spanish Mackerel ◽  
Coastal Marine

Despite many good policies and institutions, the coastal environment of Langkawi continues to deteriorate. This could be due to lack of effective governance as well as unregulated waste discharge. Evidences collected from the literature during 1996 to 2013 also revealed a significant increase in the concentrations of Zn (R2 = 0.78) and Pb (R2 = 0.12) in the sediment. This appears to be the result of large volume of terrestrial runoff that brings these metals originating from extensive anthropogenic activities. It is a vital indicator of coastal pollution. It is a matter of concern that in many cases Pb concentration in the sediment exceeded the world average value 20 μg/g as well as Canadian Interim Sediment Quality Standard of 35 μg/g for the coastal areas. Similarly, the metal pollution index (MPI) measured over a period of 2007 to 2009 in fish also indicated an increasing trend of pollution in Langkawi. The maximum MPI value (4.87) was recorded in Spanish mackerel. Since pollution of coastal environment has serious implications for marine biodiversity and health of seafood consumers, measures are required to address this problem. Use of constructed wetland might be effective in reducing the coastal pollution as this will filter the effluent and waste before their mixing with the coastal water. Furthermore, enabling the stakeholders to play the environmental stewardship role will ensure better governance of coastal ecosystem and effective implementation of policies, envisaging an improved monitoring of waste/effluent discharge into the coastal marine environment. These measures are among the actions necessary for achieving a sustainable coastal environment of Langkawi.

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