Application of Gas-Permeable Membranes For-Semi-Continuous Ammonia Recovery from Swine Manure
Gas-permeable membrane technology is a new strategy to minimize ammonia losses from manure, reducing pollution and recovering N in the form of an ammonium salt fertilizer. In this work, a new operational configuration to recover N using the gas-permeable membrane technology from swine manure was tes...
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2019-03-01
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doaj-047e5f772be140c58ec75a64def67b662020-11-25T00:23:36ZengMDPI AGEnvironments2076-32982019-03-01633210.3390/environments6030032environments6030032Application of Gas-Permeable Membranes For-Semi-Continuous Ammonia Recovery from Swine ManureBerta Riaño0Beatriz Molinuevo-Salces1Matías B. Vanotti2María Cruz García-González3Agricultural Technological Institute of Castilla y Léon. Ctra. Burgos, km. 119, 47071 Valladolid, SpainAgricultural Technological Institute of Castilla y Léon. Ctra. Burgos, km. 119, 47071 Valladolid, SpainUnited States Department of Agriculture, Agricultural Research Service, Coastal Plains Soil, Water and Plant Research Center, 2611, W. Lucas St. Florence, SC 29501, USAAgricultural Technological Institute of Castilla y Léon. Ctra. Burgos, km. 119, 47071 Valladolid, SpainGas-permeable membrane technology is a new strategy to minimize ammonia losses from manure, reducing pollution and recovering N in the form of an ammonium salt fertilizer. In this work, a new operational configuration to recover N using the gas-permeable membrane technology from swine manure was tested in a semi-continuous mode. It treated swine manure with a total ammonia nitrogen (TAN) concentration of 3451 mg L−1. The system was operated with low aeration rate (to raise pH), and with hydraulic retention times (HRT) of seven days (Period I) and five days (Period II) that provided total ammonia nitrogen loading rate (ALR) treatments of 491 and 696 mg TAN per L of reactor per day, respectively. Results showed a uniform TAN recovery rate of 27 g per m2 of membrane surface per day regardless of the ALR applied and the manure TAN concentration in the reactor. TAN removal reached 79% for Period I and 56% for Period II, with 90% of recovery by the membrane in both periods. Water capture in the acidic solution was also uniform during the experimental period. An increase in temperature of 3 °C of the acidic solution relative to the wastewater reduced 34% the osmotic distillation and water dilution of the product. These results suggested that the gas-permeable membrane technology operating in a semi-continuous mode has a great potential for TAN recovery from manure.http://www.mdpi.com/2076-3298/6/3/32total ammonia nitrogenrecoveryswine manuregas-permeable membranes |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Berta Riaño Beatriz Molinuevo-Salces Matías B. Vanotti María Cruz García-González |
spellingShingle |
Berta Riaño Beatriz Molinuevo-Salces Matías B. Vanotti María Cruz García-González Application of Gas-Permeable Membranes For-Semi-Continuous Ammonia Recovery from Swine Manure Environments total ammonia nitrogen recovery swine manure gas-permeable membranes |
author_facet |
Berta Riaño Beatriz Molinuevo-Salces Matías B. Vanotti María Cruz García-González |
author_sort |
Berta Riaño |
title |
Application of Gas-Permeable Membranes For-Semi-Continuous Ammonia Recovery from Swine Manure |
title_short |
Application of Gas-Permeable Membranes For-Semi-Continuous Ammonia Recovery from Swine Manure |
title_full |
Application of Gas-Permeable Membranes For-Semi-Continuous Ammonia Recovery from Swine Manure |
title_fullStr |
Application of Gas-Permeable Membranes For-Semi-Continuous Ammonia Recovery from Swine Manure |
title_full_unstemmed |
Application of Gas-Permeable Membranes For-Semi-Continuous Ammonia Recovery from Swine Manure |
title_sort |
application of gas-permeable membranes for-semi-continuous ammonia recovery from swine manure |
publisher |
MDPI AG |
series |
Environments |
issn |
2076-3298 |
publishDate |
2019-03-01 |
description |
Gas-permeable membrane technology is a new strategy to minimize ammonia losses from manure, reducing pollution and recovering N in the form of an ammonium salt fertilizer. In this work, a new operational configuration to recover N using the gas-permeable membrane technology from swine manure was tested in a semi-continuous mode. It treated swine manure with a total ammonia nitrogen (TAN) concentration of 3451 mg L−1. The system was operated with low aeration rate (to raise pH), and with hydraulic retention times (HRT) of seven days (Period I) and five days (Period II) that provided total ammonia nitrogen loading rate (ALR) treatments of 491 and 696 mg TAN per L of reactor per day, respectively. Results showed a uniform TAN recovery rate of 27 g per m2 of membrane surface per day regardless of the ALR applied and the manure TAN concentration in the reactor. TAN removal reached 79% for Period I and 56% for Period II, with 90% of recovery by the membrane in both periods. Water capture in the acidic solution was also uniform during the experimental period. An increase in temperature of 3 °C of the acidic solution relative to the wastewater reduced 34% the osmotic distillation and water dilution of the product. These results suggested that the gas-permeable membrane technology operating in a semi-continuous mode has a great potential for TAN recovery from manure. |
topic |
total ammonia nitrogen recovery swine manure gas-permeable membranes |
url |
http://www.mdpi.com/2076-3298/6/3/32 |
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