Nutrient removal effectivity of seaweeds as biofilter and water pollution control in hybrid grouper aquaculture wastewater at low salinity

Abstract This research aims to determine the performance and nutrient uptake effectivity of seaweeds species, namely Ulva fasciata., Sargassum illicifolium, Gelidium sp., and Dictyota sp. as a biofilter in hybrid grouper aquaculture wastewater at low salinity (14-17 ppt). This study used a Completely Randomized Design with 3 replications. The statistical analysis was carried out by Analysis of Variance continued with the Least Significance Difference test, and the Kruskal-Walis test with the Mann-Whitney analysis, and T-test with a confidence level of 95%. The concentrations of ammonia, nitrate, phosphate, and water quality parameters were observed every 4 days. The seaweeds uptake of N and P in water, and Specific Growth Rate were also observed. The results showed that U. fasciata was able to reduce ammonia by 75.95% and nitrate by 79.53%, which were the highest compared to other treatments, while Dictyota sp. was able to20 reduce the highest phosphate by 87.5% for 20 days. The highest SGR was achieved by U. fasciata at 1.91 %day-1. The highest N content uptake by seaweeds was 104.4%, and the total P of 182.3% occurred in U. fasciata. Overall, U. fasciata has 22 the highest performance and effectiveness as a biofilter that is able to reduce nutrient waste in low-salinity from grouper aquaculture, for re-circulation or before being discharged into the environment to reduce eutrophication and HABs in aquatic environment. The highest growth rate of U. fasciata can be used as food with highly nutritional and economical value.

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Nutrient removal effectivity of seaweeds as biofilter and water pollution control in hybrid grouper aquaculture wastewater at low salinity

10.21203/rs.3.rs-149402/v2 ◽

2021 ◽

Author(s):

Ratih Ida Adharini ◽

Murwantoko Murwantoko ◽

Namastra Probosunu ◽

Riza Yuliratno Setiawan ◽

Tony Budi Satriyo

Keyword(s):

Growth Rate ◽

Nutrient Removal ◽

Harmful Algal Blooms ◽

Algal Blooms ◽

Quality Parameters ◽

Low Salinity ◽

Randomized Design ◽

Hybrid Grouper ◽

Aquaculture Wastewater ◽

Difference Test

Abstract This research aims to determine the performance and nutrient removal effectivity of seaweeds species, namely Ulva fasciata., Sargassum illicifolium, Gelidium sp., and Dictyota sp. as a biofilter in hybrid grouper aquaculture wastewater at low salinity (14-17 ppt). This study used a Completely Randomized Design with 3 replications. The statistical analysis was carried out by Analysis of Variance continued with the Least Significance Difference test, and the Kruskal-Walis test with the Mann-Whitney analysis, and T-test with a confidence level of 95%. The concentrations of ammonia, nitrate, phosphate, and water quality parameters were observed every 4 days. The seaweeds uptake of N and P in water, and Specific Growth Rate were also observed. The results showed that U. fasciata was able to reduce ammonia by 75.95% and nitrate by 79.53%, which were the highest compared to other treatments, while Dictyota sp. was able to reduce the highest phosphate by 87.5% for 20 days. The highest SGR was achieved by U. fasciata at 1.91 %day-1. The highest N content uptake by seaweeds was 104.4%, and the total P of 182.3% occurred in U. fasciata. Overall, U. fasciata has the highest performance and effectiveness as a biofilter that is able to reduce nutrient waste in low-salinity from grouper aquaculture, for re-circulation or before being discharged into the environment to reduce eutrophication and harmful Algal Blooms (HABs) in aquatic environment. The highest growth rate of U. fasciata can be used as food with highly nutritional and economical value.

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Nutrient removal effectivity of seaweeds as biofilter and water pollution control in hybrid grouper aquaculture wastewater at low salinity

10.21203/rs.3.rs-149402/v3 ◽

2021 ◽

Author(s):

Ratih Ida Adharini ◽

Murwantoko Murwantoko ◽

Namastra Probosunu ◽

Riza Yuliratno Setiawan ◽

Tony Budi Satriyo

Keyword(s):

Growth Rate ◽

Nutrient Removal ◽

Harmful Algal Blooms ◽

Algal Blooms ◽

Water System ◽

Open Water ◽

Quality Parameters ◽

Low Salinity ◽

Hybrid Grouper ◽

Aquaculture Wastewater

Abstract This research aims to determine the performance and nutrient removal effectivity of seaweeds species, namely Ulva fasciata., Sargassum illicifolium, Gelidium sp., and Dictyota sp. as a biofilter in hybrid grouper aquaculture wastewater at low salinity (14-17 ppt). This study used a Completely Randomized Design with 3 replications. The statistical analysis was carried out by Analysis of Variance continued with the Least Significance Difference test, and the Kruskal-Walis test with the Mann-Whitney analysis, and T-test with a confidence level of 95%. The concentrations of ammonia, nitrate, phosphate, and water quality parameters were observed every 4 days. The seaweeds removal of N and P in water, and Specific Growth Rate were also observed. The results showed that U. fasciata was able to remove or reduce ammonia by 75.95% and nitrate by 79.53%, which were the highest compared to other treatments, while Dictyota sp. was able to reduce the highest phosphate by 87.5% for 20 days. The highest SGR was achieved by U. fasciata at 1.91 %day -1 . The highest N content uptake by seaweeds was 104.4%, and the total P of 182.3% occurred in U. fasciata . Overall, U. fasciata has the highest performance and effectiveness as a biofilter that is able to reduce nutrient waste in low-salinity from grouper aquaculture, for re-circulation or before being discharged into the environment to reduce eutrophication and Harmful Algal Blooms (HABs) in open water system. The highest growth rate of U. fasciata can be used as food with highly nutritional and economical value. Keywords : seaweeds, biofilter, hybrid grouper, wastewater, nutrient removal

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Sustainable water-pollution control technology in the South - issues and options

Waterlines ◽

10.3362/0262-8104.1995.023 ◽

1995 ◽

Vol 14 (1) ◽

pp. 5-7

Author(s):

Kenneth Iwugo

Keyword(s):

Water Pollution ◽

Pollution Control ◽

Control Technology ◽

The South ◽

Water Pollution Control

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Low-Cost Technology for Water Pollution Control in Developing Countries

Water Science & Technology ◽

10.2166/wst.1982.0170 ◽

1982 ◽

Vol 14 (9-11) ◽

pp. 1337-1352 ◽

Cited By ~ 1

Author(s):

G G Cillié

Keyword(s):

Water Pollution ◽

Developing Countries ◽

United Nations ◽

Pollution Control ◽

Low Cost ◽

Water Pollution Control ◽

Local Labour ◽

International Water ◽

Design And Methods ◽

Local Materials

An estimated 80 % of all illnesses in developing countries is in one way or another related to water. In order to alleviate this most serious condition, the united Nations has initiated the “International Water Decade”, for which the estimated costs are $600 000 million, a sum which is far beyond any available means. By application of “low-cost technology” this sum could be reduced to $100 000 million which brings the objective within the reach of possibility. Details are given of the design and methods of construction of units which are best suited to the specific requirements and which would be simple, reliable and economical to operate. These can be constructed largely from local materials and by local labour. The need for appropriate training of both operators and the user population is stressed.

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