scholarly journals The Utilization of Gracilaria verrucosa as Fish Processing Wastewater Biofilter

2020 ◽  
Vol 147 ◽  
pp. 02022
Author(s):  
Dhia Rahma Sari ◽  
Ratih Ida Adharini
Keyword(s):  
Water Quality ◽  
Nutrient Uptake ◽  
Quality Parameters ◽  
Gracilaria Verrucosa ◽  
Fish Processing ◽  
Seaweed Biomass ◽  
Smoked Fish ◽  
Salinity Water ◽  
And Control ◽  
Brackish Water Aquaculture

Wastewater from the smoked-fish processing industry has been known to cause water pollution in Pengadulan Estuary, Jepara. This research aimed to assess the ability of Gracilaria verrucosa as biofilter for fish processing wastewater and investigate its growth rate. This study was conducted at the Center for Brackish Water Aquaculture (BBPBAP) Jepara from January to April 2019. This study used three different G. verucosa biomass in 60 L aquarium: 150 gram (A); 200 gram (B); and 250 gram (C) and control. The parameters observed in the study were seaweed biomass, nutrient uptake by seaweed, and water quality parameters: salinity, water temperature, pH, dissolved oxygen, TSS, BOD5, ammonia (NH3), nitrate (NO3), and phosphate (PO4). The results showed that G. verrucosa decreased ammonia, phosphate, and nitrate by 67.6%, 96%, and 37.1%, respectively. The result of RGR value has increased on the 10th and 30th day whereas on the 20th day were declined. The highest RGR value obtained on the 10th day on Treatment 1, which is 2.1% per day. It can be inferred that G. verrucosa is capable of increasing the water quality and the nutrient uptake in fish processing wastewater. Therefore, G. verrucosa held potential as both ecologically and economically sustainable biofilter.

scholarly journals The effect of commercial probiotics on health and production of shrimp (Penaeus monodon)

2017 ◽  
Vol 3 (1) ◽  
pp. 88-93 ◽  
Author(s):  
Rubia Akter ◽  
Md Rayhan Hossain ◽  
Md Motiur Rahman ◽  
BM Shahinur Rahman ◽  
KKU Ahmed
Keyword(s):  
Water Quality ◽  
Penaeus Monodon ◽  
Quality Parameters ◽  
Total Alkalinity ◽  
Culture Period ◽  
Average Weight ◽  
Research Station ◽  
Commercial Probiotics ◽  
And Control ◽  
The Impact

The study was carried out to explore the impact of probiotics on shrimp (Penaeus monodon) in the Shrimp Research Station ponds during the culture period of 90 days. The experiment was set in 9 on-station ponds having an area of 0.052?0.064 ha. Three treatments of the experiment were: super Ps probiotics broadcast all over the ponds mixed with clay (T1), probiotics broadca Zymetin st over the pond mixed with feed (T2) and control (without probiotics) the ponds (T3) and each treatments having 3 replicates. All Juvenile of shrimp were stocked at a density of 6.0 juv/m2 and was fed with quality feed (gold plus-grower) twice daily at the rate of 10.3% of shrimp biomass. Water quality parameters namely temperature, water depth, dissolved oxygen, pH, salinity, ammonia, nitrate, total alkalinity and transparency were within suitable range for shrimp growth without finding any stress. Growth of shrimp was measured and feed was adjusted after every fortnight. The average weight of shrimp in T1, T2 and T3 was 22.065 ±5.52, 19.87 ±4.98 and 11.01 ±0.86g, respectively. Higher growth was obtained from T1 followed by T2 and T3. Day after 90 of husbandry, all shrimp were harvested. The survivality rate of shrimp production was reckoned 80%. The production of shrimp was found 760 kg/ha in T1, 665 kg/ha in T2 and 205.19 kg/ha. in T3. So the highest production was found using super PS (T1). Food conversion ratio (FCR) of prawn was found higher (2.48) in T3 compared to T1 (1.83) and T2 (2.01). The result of the study is therefore revealed that probiotics paly a most important role in growth, survival and production of shrimp by maintaining good water quality environment throughout the culture period. It may be therefore concluded that probiotics can be utilized well the shrimp ponds to get higher growth and production keeping the congenial environment.Asian J. Med. Biol. Res. March 2017, 3(1): 88-93

scholarly journals IoT for Monitoring and Control of Water Quality Parameters

2020 ◽  
Vol 14 (16) ◽  
pp. 4
Author(s):  
Fouzi Lezzar ◽  
Djamel Benmerzoug ◽  
Ilham Kitouni
Keyword(s):  
Water Quality ◽  
Water Quality Monitoring ◽  
Quality Parameters ◽  
Water Quality Parameters ◽  
Monitoring And Control ◽  
Cloud Processing ◽  
Data Collection Process ◽  
Standard Values ◽  
Processing And Storage ◽  
And Control

<p class="0abstract"><span lang="EN-US">This work presents an Internet of Things (IoT) solution to facilitate real time water quality monitoring by enabling the management of collected data from electronic sensors. Firstly, we present in detail problems encountered during the used data collection process. We discuss after the requirements from the water monitoring quality standpoint, data acquisition, cloud processing and data visualization to the end user. We designed a solution to minimize technicians’ visits to isolated water tower, we designed sensors achieving a lifespan of several years. The solution will be capable of scaling the processing and storage resources. This combination of technologies can cope with different types of environments. The system also provides a notification to a remote user, when there is a non-conformity of water quality parameters with the pre-defined set of standard values.</span></p>

scholarly journals Evaluation of the efficiency of a low-cost aerator and water quality in intensive production systems of tilapia with bioflakes at different stocking densities

2021 ◽  
Vol 10 (11) ◽  
pp. e350101119675
Author(s):  
Everton Ortiz Rocha ◽  
Armin Feiden ◽  
Jair Antonio Cruz Siqueira ◽  
Luciene Kazue Tokura ◽  
Sidnei Gregorio Tavares ◽  
...  
Keyword(s):  
Water Quality ◽  
Production Systems ◽  
Low Cost ◽  
Quality Parameters ◽  
Chemical Parameters ◽  
Microorganism Population ◽  
Venturi Effect ◽  
Average Biomass ◽  
And Control ◽  
Physical And Chemical

Among the types of production systems applied in aquaculture, the biofloc culture system (BTF) has been gaining space due to its sustainable techniques. Noteworthy is the low or zero renewal of water, the formation of the microorganism population predominantly autotrophic and heterotrophic, resulting in microbial flakes. Taking into consideration the effectiveness of the system in tilapia farming, this work aimed at the fabrication, implementation, and analysis of the efficiency of a low-cost aerator. To evaluate and control the physical and chemical parameters of the water, 3,780 Nile tilapia fry were used with an initial average biomass of 3±0.5g, distributed in 24 rectangular tanks with a useful volume of 125 liters. The experiment included 6 treatments (T1: 360 fish m-3, T2: 1800 fish m-3, T3: 1080 fish m-3, T4: 1440 fish m-3, T5: 720 fish m-3 and T6: 2160 fish m-3) and four repetitions. The efficiency of the Venturi effect aerator and the water quality parameters were analyzed. Comparisons of the averages were performed using Tukey's test at 5% significance. From the dissolved oxygen analysis, it was possible to conclude that the aerator Venturi effect was efficient during the experiment, meeting the desired levels, also taking into consideration the ease of applicability and low cost for its development. Through the analysis of the physical-chemical parameters of the water and the mortality rates during the experiment, it can also be concluded that the safest density to operate using the bioflocci is up to 720 fish m-3.

scholarly journals The performance of Chlorella vulgaris growth on mass-scale cultivation

2020 ◽  
Vol 1 (2) ◽  
Author(s):  
Dini Alvateha ◽  
Siska Falentina ◽  
Rarasrum Dyah Kasitowati ◽  
Sutianto Pratama Suherman ◽  
Luthfiana Aprilianita Sari ◽  
...  
Keyword(s):  
Water Quality ◽  
Chlorella Vulgaris ◽  
Culture Media ◽  
Initial Density ◽  
Quality Parameters ◽  
Mass Scale ◽  
Water Quality Parameters ◽  
Natural Food ◽  
Culture Activity ◽  
Brackish Water Aquaculture

Phytoplankton have many benefits, including as a primary producer, natural food, bioindicator, and water pollution treatment. For this reason, their availability needs to be managed, one of which is through cultivation. The purpose of this study was to analyze the mass scale cultivation of Chlorella vulgaris. The research was conducted at the Technical Implementation Unit of Freshwater and Brackish Water Aquaculture, Situbondo, using a descriptive method. The data were analyzed statistically using MS. Excel 2016 software, and a multiple linear regression test was carried out to determine the effect of water quality parameters on the growth of C. vulgaris using the SPSS 16.0 application. The cultivation process started from strain preparation, water preparation, tank and culture media preparation, inoculation, fertilization, and then harvesting. The initial density of C. vulgaris used was 145x104 Cell. mL-1 in tank 1 and 188x104 Cell. mL-1 in tank 2. The results showed that the cell density value of C. vulgaris increased every day until it entered the exponential phase, namely on the 4th day of the culture activity, which was 507 x 104 in tank 1 and 536 x 104 Cell. mL-1 in tank 2. Furthermore, the value of water quality parameters that affected the growth of C. vulgaris in tank 1 and tank 2 was dissolved oxygen of 4.82-6.97 mg. L-1, pH 8.2-9.1, transparency of 20-45 cm, temperature was 26.8-28.2 oC, nitrate of 0.10-0.50 mg. L-1, phosphate of 0.75-2 mg. L-1, and salinity of 30-39 ppt.

scholarly journals FREKUENSI VAKSINASI UNTUK PENCEGAHAN PENYAKIT PADA BUDI DAYA UDANG WINDU ( Penaeus monodon Fabr.) DI TAMBAK

2016 ◽  
Vol 2 (1) ◽  
pp. 93
Author(s):  
Arifuddin Tompo ◽  
Endang Susianingsih ◽  
Mun Imah Madeali
Keyword(s):  
Water Quality ◽  
Survival Rate ◽  
Prevention And Control ◽  
Penaeus Monodon ◽  
Quality Parameters ◽  
Shrimp Culture ◽  
Tiger Shrimp ◽  
Value Range ◽  
And Control ◽  
Effective Result

Pencegahan dan penanggulangan penyakit pada budi daya udang windu dewasa ini dilakukan dengan cara merangsang kekebalan spesifik udang dengan menggunakan immunostimulan, namun optimalisasi penggunaannya masih perlu dilakukan. Oleh karena itu, penelitian ini dimaksudkan untuk mengoptimalisasikan penggunaan immunostimulan untuk dapat memberikan hasil yang efektif terhadap pencegahan penyakit pada budi daya udang windu. Immunostimulan yang digunakan dalam penelitian ini adalah hasil ekstraksi dari bakteri, Vibrio harveyii yang dilemahkan dengan formalin 1%. Rancangan yang digunakan dalam penelitian ini adalah Rancangan Acak Lengkap (RAL) dengan empat perlakuan: A= vaksinasi empat kali sebulan, B= vaksinasi dua kali sebulan, C= vaksinasi sekali sebulan, dan D= tanpa vaksin (kontrol) yang diulang sebanyak tiga kali. Aplikasi dolomit diberikan dua kali per minggu untuk semua perlakuan dengan dosis 5—10 mg/L untuk tiap kali penggunaan. Padat penebaran sebanyak 60.000 ekor/ha dengan pola tradisional plus. Hasil pengamatan memperlihatkan bahwa perlakuan B (vaksinasi dua kali sebulan) memberikan sintasan yang tertinggi yaitu 91,5% dengan produksi tertinggi yaitu 84,0 kg. Pengamatan terhadap populasi bakteri Vibrio sp. pada lingkungan berada pada kisaran 102—103 cfu/mL yang masih layak bagi lingkungan dan budi daya udang sedangkan untuk kualitas air pada beberapa parameter juga berada pada kisaran yang layak untuk budi daya udang.In recent years the prevention and control of diseases on tiger shrimp culture has been stimulated by specific immunostimulan such as vaccine. How ever the optimalization used of immunostimulan have to be conducted. Based on that information, the study aims to optimalized the using of immunostimulan to give the effective result on diseases prevention on tiger shrimp culture. The immunostimulan used in this research was extracted from vibrio by formalin killed 1% with four treatments i.e. A= four times of vaccination a month, B= two times of vaccination a monts, C= once of vaccination a month and, D= control (non vaccination). Dolomite application was given two times a week for all treatments with the dosage 5—10 mg/ L. The results shows that the treatment B (two times of vaccination a month) exhibit the survival rate i.e. 91.5% it is higher than A, C, and D treatments with highest production 84.0 kg. Observation on the population of Vibrio sp. value range 102—103 cfu/mL that’s normally condition both on environmental and shrimp culture, and water quality parameters was still in normal condition.

scholarly journals Correction: Impact of water quality parameters on bacteria inactivation by low-voltage electroporation: mechanism and control

2018 ◽  
Vol 4 (6) ◽  
pp. 882-882
Author(s):  
Zheng-Yang Huo ◽  
Guo-Qiang Li ◽  
Tong Yu ◽  
Yun Lu ◽  
Hao Sun ◽  
...  
Keyword(s):  
Water Quality ◽  
Low Voltage ◽  
Quality Parameters ◽  
Water Quality Parameters ◽  
Bacteria Inactivation ◽  
And Control

Correction for ‘Impact of water quality parameters on bacteria inactivation by low-voltage electroporation: mechanism and control’ by Zheng-Yang Huo et al., Environ. Sci.: Water Res. Technol., 2018, DOI: 10.1039/c8ew00041g.

Impact of water quality parameters on bacteria inactivation by low-voltage electroporation: mechanism and control

2018 ◽  
Vol 4 (6) ◽  
pp. 872-881 ◽  
Author(s):  
Zheng-Yang Huo ◽  
Guo-Qiang Li ◽  
Tong Yu ◽  
Yun Lu ◽  
Hao Sun ◽  
...  
Keyword(s):  
Water Quality ◽  
High Efficiency ◽  
Low Voltage ◽  
Quality Parameters ◽  
Water Quality Parameters ◽  
Bacteria Inactivation ◽  
And Control ◽  
The Impact

Nanowire-modified low-voltage electroporation enables high-efficiency disinfection and the impact of water quality parameters were analyzed.

Investigation of Some Water Quality Parameters of Pond Water under Mymensingh Municipality

2015 ◽  
Vol 8 (1) ◽  
pp. 85-89
Author(s):  
F Zannat ◽  
MA Ali ◽  
MA Sattar
Keyword(s):  
Water Quality ◽  
Water Samples ◽  
Chemical Properties ◽  
Pond Water ◽  
Quality Parameters ◽  
Water Quality Parameters ◽  
Urban Region ◽  
Mn Toxicity ◽  
Ph Values ◽  
Drinking Water Standard

A study was conducted to evaluate the water quality parameters of pond water at Mymensingh Urban region. The water samples were collected from 30 ponds located at Mymensingh Urban Region during August to October 2010. The chemical analyses of water samples included pH, EC, Na, K, Ca, S, Mn and As were done by standard methods. The chemical properties in pond water were found pH 6.68 to 7.14, EC 227 to 700 ?Scm-1, Na 15.57 to 36.00 ppm, K 3.83 to 16.16 ppm, Ca 2.01 to 7.29 ppm, S 1.61 to 4.67 ppm, Mn 0.33 to 0.684 ppm and As 0.0011 to 0.0059 ppm. The pH values of water samples revealed that water samples were acidic to slightly alkaline in nature. The EC value revealed that water samples were medium salinity except one sample and also good for irrigation. According to drinking water standard Mn toxicity was detected in pond water. Considering Na, Ca and S ions pond water was safe for irrigation and aquaculture. In case of K ion, all the samples were suitable for irrigation but unsuitable for aquaculture.J. Environ. Sci. & Natural Resources, 8(1): 85-89 2015

PEUBAH KUALITAS AIR YANG MEMPENGARUHI PERTUMBUHAN RUMPUT LAUT (Gracilaria verrucosa) DI TAMBAK TANAH SULFAT MASAM KECAMATAN ANGKONA KABUPATEN LUWU TIMUR PROVINSI SULAWESI SELATAN

2009 ◽  
Vol 4 (1) ◽  
pp. 125
Author(s):  
Akhmad Mustafa ◽  
Rachmansyah Rachmansyah ◽  
Dody Dharmawan Trijuno ◽  
Ruslaini Ruslaini
Keyword(s):  
Water Quality ◽  
Growth Rate ◽  
Ammonium Phosphate ◽  
Gracilaria Verrucosa ◽  
Acid Sulfate Soils ◽  
Acid Sulfate Soil ◽  
Acid Sulfate ◽  
Independent Variables ◽  
Water Quality Variables ◽  
Sulfate Soils

Rumput laut (Gracilaria verrucosa) telah dibudidayakan di tambak tanah sulfat masam dengan kualitas dan kuantitas produksi yang relatif tinggi. Oleh karena itu, dilakukan penelitian yang bertujuan untuk mengetahui peubah kualitas air yang mempengaruhi laju pertumbuhan rumput laut di tambak tanah sulfat masam Kecamatan Angkona Kabupaten Luwu Timur Provinsi Sulawesi Selatan. Pemeliharaan rumput laut dilakukan di 30 petak tambak  terpilih selama 6 minggu. Bibit rumput laut dengan bobot 100 g basah ditebar dalam hapa berukuran 1,0 m x 1,0 m x 1,2 m. Peubah tidak bebas yang diamati adalah laju pertumbuhan relatif, sedangkan peubah bebas adalah peubah kualitas air yang meliputi: intensitas cahaya, salinitas, suhu, pH, karbondioksida, nitrat, amonium, fosfat, dan besi. Analisis regresi berganda digunakan untuk menentukan peubah bebas yang dapat digunakan untuk memprediksi peubah tidak bebas. Hasil penelitian menunjukkan bahwa laju pertumbuhan relatif rumput laut di tambak tanah sulfat masam berkisar antara 1,52% dan 3,63%/hari dengan rata-rata 2,88% ± 0,56%/hari. Di antara 9 peubah kualitas air yang diamati ternyata hanya 5 peubah kualitas air yaitu: nitrat, salinitas, amonium, besi, dan fosfat yang mempengaruhi pertumbuhan rumput laut secara nyata. Untuk meningkatkan pertumbuhan rumput laut di tambak tanah sulfat masam Kecamatan Angkona Kabupaten Luwu Timur dapat dilakukan dengan pemberian pupuk yang mengandung nitrogen untuk meningkatkan kandungan amonium dan nitrat serta pemberian pupuk yang mengandung fosfor untuk meningkatkan kandungan fosfat sampai pada nilai tertentu, melakukan remediasi untuk menurunkan kandungan besi serta memelihara rumput laut pada salinitas air yang lebih tinggi, tetapi tidak melebihi 30 ppt.Seaweed (Gracilaria verrucosa) has been cultivated in acid sulfate soil-affected ponds with relatively high quality and quantity of seaweed production. A research has been conducted to study water quality variables that influence the growth of seaweed in acid sulfate soil-affected ponds of Angkona Sub-district East Luwu Regency South Sulawesi Province. Cultivation of seaweed was done for six weeks in 30 selected brackishwater ponds. Seeds of seaweed with weight of 100 g were stocked in hapa sized 1.0 m x 1.0 m x 1.2 m. Dependent variable that was observed was specific growth rate, whereas independent variables were water quality variables including light intensity, salinity, temperature, pH, carbondioxide, nitrate, ammonium, phosphate, and iron. Analyses of multiple regressions were used to determine the independent variables which could be used to predict the dependent variable. Research result indicated that relative growth rate of seaweed in acid sulfate soils-affected brackishwater ponds ranged from 1.52% to 3.63%/day with 2.88% ± 0.56%/day in average. Among nine observed water quality variables, only five variables namely: nitrate, salinity, ammonium, phosphate and iron influence significantly on the growth of seaweed in acid sulfate soils-affected brackishwater ponds. The growth of seaweed in acid sulfate soils-affected brackishwater ponds of Angkona District East Luwu Regency, can be improved by using nitrogen-based fertilizers to increase ammonium and nitrate contents and also fertilizers which contain phosphorus to improve phosphate content to a certain level. Pond remediation to decrease iron content and also rearing seaweed at higher salinity (but less than 30 ppt) can also be alternatives to increase the growth of seaweed.

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