M. ole·ifera se·ed hu·sks (H-M·O) w·ere u·sed as adsorbent for the removal of methylene blue (MB) dye from an aqueous solution. The ads·orbent was char·acterized by SE·M, ED·X, X·RD, F·TIR, B·ET, and p·HPZC. To evaluate adsorption capacity, the influences of p·H, kinetics, isotherms, and thermodynamic prop·erties were anal·yzed. Characteri·zation tech·niques indic·ated that H-MO has het·erogeneous morp·hological charac·teristics wi·th a spe·cific sur·face a·rea of 3.24 m2 g-1, mai·nly comp·osed of ce·llulose distr·ibuted in an amor·phous stru·cture. MB adsorption was favorable at pH values higher than pHPZC of 6.6, using an adsorbent dosage of 1.0 g L-1. Equilibrium was achieved in the first 240 min, and the pseudo-second-order model was suitable for describing the kinetic data. Freu·ndlich was the mo·st adeq·uate model for descri·bing the isoth·erm cur·ves, pred·icting a max·imum adsor·ption capa·city of 122.7 mg g-1 at 24°C, hig·her tha·n oth·er natu·ral ad·sorbents. The ads·orption proc·ess w·as spo·ntaneous and exoth·ermic, indic·ating that lo·wer temper·atures fav·or the ad·sorption and th·at it is cont·rolled by p·hysical fo·rces. The da·ta presen·ted indic·ate the M·B has t·he pot·ential to be succ·essfully trea·ted by the eco-fr·iendly and l·ow-cost ads·orbent M. oleif·era seed h·usks. Keywords: agricultural wastes, low-cost adsorbent, physisorption.
Objetivo: Descrever as estratégias realizadas pela mulher contemporânea para a manutenção do aleitamento materno após o retorno ao trabalho. Método: Tratou-se de uma pesquisa de campo, com abordagem qualitativa, de caráter exploratório, do tipo pesquisa de campo em Universidade privada da zona oeste do Rio de Janeiro. Resultados: Foram entrevistadas 13 mulheres, Jovens, casadas, 15 anos de escolaridade com 1 filho. Observou-se a fragilidade no processo de adaptação e retorno ao trabalho devido pouco conhecimento dessas mulheres em relação ao aleitamento, escassa orientação no pré-natal, apoio familiar sofrível, falta de local adequado para guarda e retirada de leite. Considerações: O presente estudo, permite conhecer a demonstração da atuação dos enfermeiros no papel fundamental do esclarecimento sobre possíveis dúvidas em relação ao período lactário, sendo que o aleitamento materno exclusivo, envolve questões sociais, biológicas e psicológicas, que devem ser acompanhadas desde o pré-natal, propiciando as mães o desenvolvimento da autoconfiança em amamentar e na expertise de superar dificuldades com o seu retorno ao trabalho.
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